can i use a higher pressure radiator cap

A high-pressure radiator cap is used to raise the boiling point. on the Kawi's, but I'm not familiar with the WR's enough yet to know if it would cause issues. We do this because it will go higher than 30 psi. The other benefit is that straight water as we discussed before is the most efficient cooling fluid. Before I started doing research on this very subject for an upcoming Dirt Rider article, I would have thought the same as you. Higher pressure radiator cap increases the boiling point of your coolant to reduce boil over problems on your motorcycle or ATV. It closes again when the pressure has dropped to the desired level. Found inside – Page 176If a higher pressure is desired — turn relief valve well in , raise ... and the radiator cap removed to eliminate any possibility of bursting the radiator . Found inside – Page 481higher altitudes because atmospheric pressure on the coolant is less. ... A 15-pound cap will raise the boiling point of the water by about 45F8 to 257F8. Overlooking the Radiator Cap. All modern automotive cooling systems are under pressure, completely regulated by the radiator cap. The Function of Radiator Pressure Caps: Most radiator pressure caps keep the system pressure at 16 PSI so the engine coolant can get considerably hotter without the fear that it will boil off. If your area doesn't get down to negative temperatures in the winter, you can run a decreased ratio of antifreeze to coolant if you like all year round. The caps come in a variety of pressure ratings from six pounds all the way to 33 pounds. Found inside – Page 14Radial tires should not be used for buses traveling primarily in city traffic . ... a higher - pressure radiator cap , which costs only about $ 2.50 . Radiator caps also serve as pressure relief valves. You're probably right - it is. Correct pressure for cooling system is like for tires: it's just a compromise number, because go higher or lower and you get pros and cons. If you do run straight distilled water, make sure you put water wetter in with it, or you will create corrosion problems and the water wetter will make the distilled water more efficient as well. Location: Bloomington, MN. Find out how you can gain access to some of the smartest guys in tuning via TU premium. Antifreeze both keeps water from freezing in the winter (by lowering the freezing point of the water) and at the same time raises the boiling point of the water. Information is power, more information=more power. These Aluminum Fill Necks are compatible with our Mishimoto Radiator Caps. If the pressure begins to fall and you're sure you have a good seal against the radiator filler neck, you have a leak in the cooling system. Just my experience..... bp. Found inside – Page 187The water can be prevented from boiling by keeping it under pressure ( more pressure equals a higher boiling point ) and by adding a mixture of coolant . The radiator cap is designed to be the weak point in your cooling system so it can safely vent pressure, you don't want to use a cap that is so resistant to venting pressure that it causes some other part of the system to become the weak point. Part Number: BSP-BLK75125 We recommend using a radiator cap with the highest pressure rating that the radiator is designed to accept. Wheel Tech, Part III: Wheel Diameter's Effect on Performance, Beating the Heat: Advantage of a High Pressure Radiator Cap, How to Compare Weight Savings to Horsepower Gains, Check Your Engine's Health: With a Vacuum Gauge. I found that once an engine got so hot as to overheat, the oil thinned to such a degree that internal engine noise was very pronounced. Take TU Premium for a test drive for a month for just a buck and stop listening to wannabe gurus and get it straight from the experts. With my Yam I have not had a problem, even after last weekends knarly tight Sandy Lane, the Yam never lost a drop. The radiator caps are designed with a higher pressure rating than OEM caps to raise your coolants boiling point. If the pressure goes up 15 psi we add 45 degrees. But you could also have a stuck thermostat, bad water pump, or bad head gasket that lets engine compression get into the cooling system. Evans waterless coolant expands slightly as it warms, creating pressure of 3-5 psig, and the existing cap does not . (Spilled antifreeze causes both safety and environmental issues.). Other than the sugestions listed above I would recomend thermal wraping your headers and cleaning your engine if it is covered in any grime. so were not easy on the bikes by no means..but hes had his bigger rad cap on for about 8 months now, and hasnt experienced any troubles...so now you have got me thinking 👍. That same mix at 16 pounds per square inch (psi) of pressure boils at approximately 250 degrees. Last edited: Dec 11, 2016. prewarcars4me, Dec 11, 2016. Well, I've read plenty stories about leaky head gaskets, etc. By raising the pressure at which this happens with a higher rated cap, it will now force the cooling system to get even hotter to open the cap. Most riders are unaware that they've even lost any coolant unless they see some on the ground or on the frame. You can see that all the examples above have a similar boiling point. You're absolutely right. 👍 Seriously though, the higher pressure rad cap is a long time Kawi trick that I think Roessler put into play. A high-pressure radiator cap is intended for race engines running little to no antifreeze. However, past 60% coolant to water, you start to go the other way again, sharply. Tech Tip #2 - Radiator Caps. For one, it has a relatively high freezing temperature at 32 degrees Fahrenheit. For a car that sees track time, specifically road race time, it would be a good cheap upgrade to your cooling system. My personal experience on tight hot trails is that the Yami's go first. Use one or not. The higher rated cap on the radiator serves as more of a back-up safety relief valve to provide a second pressure release point if the car overheats. High-performance caps range from 19 - 32 psi. Found inside – Page 87Radiator caps are usually marked on the top There are basically two types of ... the used although the enclosed type with its fully higher internal pressure ... For 3 days only, get ALL of our PREMIUM (not available anywhere else) Tuner University Courses featuring some of the greatest minds in motorsports: - Top 10 Performance Myths Class (MP3 and Edited Transcript) - $29.95 value Found inside – Page 175RADIATOR PRESSURE CAP If a radiator pressure cap loses its ability to ... The extra margin is needed by modern engines, which run at higher temperatures. But it needs to go somewhere so the cooling system's pressure builds to the maximum pressure limit of the radiator cap's valve. Well, it's about 2-3 degrees for every psi that we increase the pressure of the system. The pressure literally forces the liquid to remain a liquid longer and does not allow it to transform into vapor. The lost coolant will either make it overheat faster or more severely. No harm has ever come of it on many of the Kawi's myself and friends have ridden. I've also seen riders who benefited from the simple addition of a product like Purple Ice from Royal Purple or Red Line's Water Wetter. Because the thermal efficiency of internal combustion engines increases with internal temperature, the coolant is kept at higher-than-atmospheric pressure to increase its boiling point.A calibrated pressure-relief valve is usually incorporated in the radiator's fill cap. How much does the pressure raise the boiling point? This reduces boiling over and losing coolant. Just my experience..... bp. That's why you you want the highest pressure cap rating suitable for your application. You'll notice that there's a plunger on the bottom of the cap. I don't run higher pressure caps on either of my bikes, but I know many desert racers who do because they have to run high speeds in unforgiving temps. Well, it may seem obvious, but the cooling system on your car is rated to a certain pressure. Wish I had the auto clutch in at that point. I'm not saying that the higher pressure cap will keep it from overheating. Extreme high output engines may benefit from higher pressures. Again, this protects the system from boiling over. High-performance engines also create more heat. You can also buy any of these individually through our resource center, but I don't know why you would as this is basically the whole store for the price of just 1 course. Not trying to pick a fight. Found inside – Page 70All radiator caps might appear similar, but take a closer look and you can ... First and foremost, running the cooling system at a higher pressure does not ... But, if it's going to be spit out on the trail - especially if it's a long trail, I'd rather have the coolant in the engine at a higher pressure than on the ground. works great , I suspect with a little research the 1.6 kpa that summers sells for 24.95 could also be found.the honda CRF MANUELS SAYS NOT TO EXCEED 1.4KPA/20LBS ON CAP . For every pound of pressure you add to your cooling system, you raise the boiling point of your coolant 3 degrees. Well, let's not forget the freezing point. These caps are available with different pressure ratings that will allow them to work with almost any cooling system. Pressure is used to help increase the boiling temperature point of your cooling system (the higher the pressure, the higher the temperature required to boil your coolant). I havenet herd much about the advatages of changing the rad cap, so I keep quite on that one... i think im going to go to a bigger rad cap too, i also ride tight trails on a yz250f and it does spew sometimes...my buddy that i go riding with all the time has a rmz250 and his overheated more than my yz250f before he went to a bigger rad cap...now its really tough to get his bike to puke rad fluid...so im sold on the bigger rad cap... 👍, They designed each cooling system to handle a certain amount of pressure before it purges itself via the radiator cap. The benefit on the track being two-fold. Found inside – Page 127Some cooling systems do not use a coolant overflow tank, but instead use a coolant ... This tank has a sight glass that the Radiator pressure cap Rubber ... Aren't we talking about Yamahas and not Kawas? Stock MK3 cap is 0.9 bar (13psi) . The Mishimoto Aluminum Coolant Fill Necks are CNC machined and ready to be welded for use with your custom project. cap the boiling point would be around 265 degrees. You would then close the draincock and fill the system up with water. High-pressure Radiator Caps have a specific purpose. Using a cap rated higher than stock may help your overflow problem, but it does nothing for the cause, which is overheating. Tech Tip #2 - Radiator Caps. To understand why, you first need to understand: Some race vehicles run straight water as coolant. If you do a lot of slow-speed woods or mud riding, a recovery tank is a good idea. Found inside – Page 454When pressure is applied, only apply the amount shown on the radiator cap. Do not exceed that pressure or else components could burst. With pressure applied ... Therefore, by using a 1.1 bar cap we make the average boiling point of a stock cooling system somewhere closer to  around 257-260 degrees. High Flow Filter Showdown: Factory Air Box vs “High Flow” filters, MAF vs Differential Pressure for Intake Testing, Keep Your Engine Alive: The Importance of Oil Temperature, Don't Block or Remove the EGR Valve, It's Saving You Money. Lou. Found insidePressurizing the system will make it easier to detect any coolant leaks. ... The pressure tester is also used to test the radiator cap (Figure 3-8). But it won’t help either. Then, the cap opens and allows a restrained coolant flow into the hose attached to the expansion tank. In closing, if you want to run the same setup all year round and want to be extra safe, run 50/50 antifreeze with Water Wetter (it improves coolant efficiency and especially helps evenly cool the cylinder head), add a 1.3 bar cap for good measure. Found inside – Page 135These bubbles can create areas in the water jacket where the coolant is at a ... A pressure-sensing valve in the radiator cap allows this higher pressure to ... Besides that, up until about 60% coolant, you do gain boiling point and freezing point. You have a coolant leak: If your coolant is leaking, it could mean your radiator cap is bad.If the cap isn't releasing excess pressure properly, that pressure can force the coolant to leak out at the point of least . It can also cause water pump failures amongst other damage via a process called cavitation. The good news is, in the winter, there's less need for excellent cooling as air intake temps and ambient temps help you out a lot more than in the summer. Higher coolant pressures also transfer heat from the cylinder heads more efficiently. Found inside – Page 91A pressure cap rated at a higher pressure or a lower pressure than the one designed for the system should not be used . A cap with a higher pressure rating ... Jul 31, 2006. A water-based coolant generally requires anywhere from a 7 to 15 psig pressure cap. We have now increased the boiling point to 257 instead of 212 degrees and we can cook much faster. Any one had luck with these caps or have other ideas on what cap to use. Straight water has a boiling point of 212 degrees. The pressure forces the cap to open and spit coolant out the overflow tube. Of course many people have been running with higher pressure caps without any problem too... 👍. But I do have a Boyesen water pump cover without the impellor for my WR. Removing or loosing a cap may well cause the engine to overheat. Flatheads as a rule don't have a pressurized system using a pressure of only 3-4 pounds. for the track. If your cooling system is in good shape, the higher pressure unlikely to cause problems. Mine is the same way. As the engine cools down, the vacuum valve in the cap serves to permit air into the radiator by opening when the internal pressure falls below atmospheric pressure (negative) after the engine is shut off. January 17, 2006. If your car never gets above 200 degrees, there is no reason to have a high pressure rating. This releases any remaining pressure in the cooling system. Any answers appreciated. See if the gauge can store the pressure. Some tracks do not allow you to use antifreeze as it is literally slick as snot if it leaks or spews onto the track. A higher pressure cap will not lower your temps unless you have been boiling over in which case you may have a defective cap on the bike. (If you go high, one con is more likelihood of springing a leak as the equipment ages.) Psi measures pound per square inch and kPa stands for kiloPascals. Found inside – Page 6-52Do not use anti - leak compounds to stop core leaks . ... Caution : Before using higher pressure settings on cap , check radiator manufacturer . Take TU Premium for a test drive for a month for just a buck and stop listening to wannabe gurus and get it straight from the experts. Practicing curmudgeon. Feb 26, 2004. The coolant mixture and system pressure combine to set the boiling point. Found inside – Page 127Pressure Radiator Cap Some cooling systems are sealed and use a pressure ... the boiling point of the coolant and permits the engine to operate at higher ... However, if you ask the average person what they actually do, you'll be met with cricket chirps. Using the pump handle, start pumping the tester until you reach the pressure indicated on your radiator cap. Of course the easy answer is to ride faster. The main reason the radiator cap blows is because there is not enough coolant, so it turns to steam and has higher pressure. Use engine ice or Water Wetter. Seriously though, the higher pressure rad cap is a long time Kawi trick that I think Roessler put into play. Bottom line is recognizing that your particular riding style and conditions are beyond your bike's capability and taking the necessary steps to correct it properly. Found inside – Page 491NoTE Each pound of pressure on the coolant raises its boiling point by about 38F. A 15-pound cap will raise the boiling point of the water by about 458F to ... What Rick said is true, BUT, a bike that's spitting coolant on the ground and loosing coolant is going to become MUCH hotter than one with a higher pressure cap that's keeping it's higher pressure and higher temp coolant IN the rads. The pressure forces the cap to open and spit coolant out the overflow tube. Both of which are impossible in the desert most of the year. But if your car normally operates at a very high coolant temperature, it is possible the cap may release pressure just shy of this temp. Yes, you would begin with a cool engine, removing the radiator cap and then draining the coolant out through the draincock/bottom radiator hose. I use a 13 lb cap on mine because that's what came in the box with my new radiator. Increasing coolant flow at slow speeds (the Boyesen does this) and oil flow through the clutch can help. Keeping the coolant in the rads or spitting it out on the ground. We recommend using a radiator cap with the highest pressure rating that the radiator is designed to accept. A replacement cap is a band-aid fix. The chart below shows how these things affect each other. Therefore, we need a compromise, which is usually a 50/50 ratio of the two fluids mixed together. The reason I have posted the "Lets talk Radiator caps" is I was told to throw a 13# cap on it. If a good 13 lb'er is not enough to hold the pressure, you have a problem in the system somewhere. Higher pressure raises the boiling point of water-based coolant. Especially when mixed with the straight distilled water+water wetter or reduced antifreeze ratio combo. Griffin recommends using a premium cap with 14-18 psi for street use and 22-24 psi for racing. (The higher boiling point might be needed on hot days, with the condenser dumping heat and partially blocking air flow through the radiator.) The last trail I rode for 10 minutes (I was a little aggresive) I nearly lost my clutch! I like Rick's approach MUCH better than patching an underlying problem by changing the specs of the cooling system. Furthermore, how does a higher pressure radiator cap work? A higher pressure rad cap fixes that problem - to a degree. Found inside – Page 58The pressure type radiator filler cap installed on the radiator operates the cooling system at higher than atmospheric pressure . This higher pressure ... at atmospheric pressure, if exposed to 15 psi (a common radiator pressure cap), the boiling point will now be 45°F. It was also suggested that I use Engine Ice? But if you do have a problem try a Kawi KX500 or KX85 cap. good question...we ride our bikes every weekend, sometimes go to hatfield, just the woods are hard on the bikes in general, motor too. I've been running the. The radiator cap controls this expansion and provides constant pressure on the system. The higher bar caps r mainly for conti cars which r designed to have a higher water pressure in the cooling system. Example, at 70/30 mix the coolant will not boil until 276 degrees F at sea . I've heard just the cover helps. Freezing would be bad enough but water also has the unique property that it expands at its freezing (which if you've ever left a soda in the freezer before, you know why that's bad). As the engine cools it causes a vacuum in the cooling system. Your coolant is under pressure to keep the boiling point as high as possible. You have two options at the point of boiling. 1.3 bar (19 psi) high-pressure radiator cap raises the boiling point of engine coolant to provide a safer and more efficient cooling system. However, let’s start with what they DON’T do. If that is the case replacing it with the stock cap is sufficiant. Of course the entire assembly would be better, but I've got more pressing things to spend my $$ on. Equipped on top of the cap is a temperature gauge so you can read how hot or cold your machine is running. As for the cap, you might consider installing an external coolant return bottle instead so that you can recycle the fluid instead of dumping it on the ground - put the reservoir anywhere you see fit: http://shop.thumpertalk.com/ProductDetails.asp?ProductCode=PU_mp11025, http://www.xtremerevolution.com/Store/spc-2345-57-1-motion-pro-coolant-recovery-system.aspx, Had that problem with my 2004 CRF250R and went to a 1.6 cap. - Dirty Secrets of Oil with Ryan Stark (MP3 and transcript) - $69.95 value But because there is zero venting it can also increase the actual coolant temp causeing a run away situation. So the coolant in your car will not actually boil until ~260 degrees, or ~271 degrees if it has antifreeze mixed in. I've been running the Boyesen cover and impeller for a year and it alleviated all my overheat problems even with a set of Unabiker guards on my 450. I think a 17 psi would be okay, but a higher pressure cap would cause problems with the radiator or heater core or possibly blow head gaskets . A radiator cap will have two pressure measurements on it, psi and kPa. For example the small tank on my T-bucket is empty when the engine is cold and about 3/4 full when the eng is up to operating temp. In a later article I will discuss other common 'coolant system upgrades' like low temperature thermostats, fan switches, as well as if/when you should upgrade your radiator. Found inside – Page 47212F ( 100C ) —except for two things : The tachometer can also be used to Expect higher temperatures when your Pressure radiator caps and antifreeze alcheck ... And the boiling point increases 2-3 degrees for each additional psi of pressure in the system. You'll get the MP3 recordings of each class as well as a transcript or companion manual with each course and you'll be able to download them all INSTANTLY. The pressure cap also prevents radiator hoses and tanks from collapsing. Found inside – Page 47The radiator cap is a key part of the system because it keeps the system under ... higher system pressure higher liquid boiling point = liquid that can ... Back in Nebraska my cousin and I always run the lowest pressure cap we could and increased the coolant glycol to make the coolant less prone to boil. Premium members get access to a new guest speaker each month (past guests have been such experts as: John Grudynski of Hytech Exhaust, Ryan Stark of Blackstone Labs, and Ben Strader of EFI University), exclusive member's only classes, articles and discounts too. Found inside – Page 77engine , and the radiator should be taken in for flushing and checking ... Raising the pressure raises the boiling point , which allows the use of a higher ... This pressure varies between models, but typically ranges from 4 to 30 psi (30 to 200 kPa). I'm unaware of any motor related issues like blown head gaskets, etc. Stant racing radiator caps are used by all the top NASCAR teams. The question I ask is when you replaced your SBC with the big block Chrysler 383 did you increase the SIZE of your radiator to match the big block radiator used with a 396? My radiator man told me to use a 7 lb cap. Vented Radiator Panel: Good in Theory, But in Practice? Consider the following: Water boils at 212° F. 50/50 coolant boils at 223° F. The boiling point goes up 3° F for every pound of pressure (psi). Learn more about how to choose the proper pressure radiator cap and how they work by reading our tech article, Cooling System Principles. Higher pressure raises the boiling point of water-based coolant. Found insideThe heater core is a heat exchanger used to transfer heat from the engine coolant ... A cap with a higher pressure rating could cause the radiator or other ... In an ideal world, engines would be cooled by straight water with no antifreeze added. Offered in a 1.8kg/cm2 (25.6psi) for most motorcycles, ATV's, and UTV's and a 2 . By raising the pressure at which this happens with a higher rated cap, it will now force the cooling system to get even hotter to open the cap. If you're running a 50/50 ratio of antifreeze to water and aren't overheating, there is no real measurable benefit. Actually, even with the stock cap, it's overheated BEFORE it spits out fluid on the ground to begin with, but engineers know this is going to happen and have built in a slight buffer zone in the pressure cap that is stock so that we're not continually adding coolant. Granted, if your engine is fairly close to stock, you don't need to worry about detonation as long as you run the right fuel as dictated in your factory service manual. Most caps are designed from 4psi (30kPa) to 30psi (205kPa), with the higher ratings . Your browser either does not have JavaScript enabled or does not appear to support enough features of JavaScript to be used well on this site. OEM quality is important here. Should I use a higher pressure radiator cap? By In particularly hot areas with engines that are running high compression or boost, a 1.3 bar radiator cap, water wetter and a reasonable coolant ratio or distilled water setup would be a good "stock upgrade" to help prevent detonation. With less or no antifreeze in your system, a. The Moroso caps are a much higher quality than the standard cap you can purchase at an auto parts store and are built for racing applications. Found inside – Page 376The gaskets and seals on the radiator cap should be inspected for any ... use only a cap with the recommended pressure, not a cap with higher pressure. Low Temp Thermostats: What’s the Advantage? The higher pressure cap raises the boiling temp of the coolant . You may find that it is beneficial to test the cap so that you can be sure that it is working properly. Water is an excellent cooling agent and is extremely efficient at carrying heat away from the engine and then exchanging that heat with the air via the radiator. Here are a few descriptions from websites/manufacturers selling these . In fact, it could make it worse. While the pressure cap trick gives us a higher boiling point, it does not a thing for freezing point. It also has a relatively low boiling point at 212 degrees Fahrenheit. Something I did with my 1JZ swap. I won't advise changing rad cap to a higher pressure one as your cooling system was designed to work with 0.9 bar for jap cars. It can also be used to run nearly straight water and water wetter (an additive which... increases the wetting ability of water.) Gates manufactures our OE quality radiator caps and cool control caps for your heavy-duty vehicle applications, with a selection of durable, wear-resistant radiator caps for automotive applications without . 2001 Dodge Ram 2500 4X4, 1998 Furd Taurus, 1982 Mercedes 380 SL, 2005 Kawasaki Concours and last but not least, 1992 Dakota 4X4. Found inside – Page 64Most teams use a 30 psi radiator cap , which allows the pressure inside the cooling ... The higher pressure keeps the water from turning into steam until it ... Found inside – Page 276Because the pressurised coolant in the cooling system boils at a higher temperature than when the radiator pressure cap is removed, you should never remove ... Fill the system and try a new cap. The main thing the higher pressure cap will do is to increase the boiling point of the coolant slightly. Radiator caps are critical to catch coolant overflow, keeping your engine cooling system operating at optimal pressure and temperature, and your vehicle operating at optimal performance. Installing one won't hurt anything. Boiling is bad for a number of reasons which I won't get too into here, but, steam/bubbles in coolant actually insulate coolant from the combustion chamber and would render the coolant useless at cooling the hot engine. Found inside – Page 146Although the stock mode first or they will not work radiator is probably OK ... as running a higher - pressure The Aquamist system can also be whenever a ... (This is just an example, not a recommendation.). If there is no pressure in the cooling system, the coolant will boil off. No cap can do that. Consequently, some of the issues that accompany a bad radiator cap can cause; damage to . A pretty knowledgable guy told me yesterday-> Yes it will raise boil point with a higher pressure cap. It moves more coolant at low RPMs, which helps to make the cooling system more efficient at slow speeds. What these caps can be used to do, is run  less antifreeze and more distilled water in your cooling system in the summer. I've heard that a high pressure radiator cap could be the fix. The cap does this by a spring loaded valve which serves as a pressure relief valve at a rated pressure. Get all of the above courses (many of which not currently available anywhere else) for one single price of just $309.75 $69.95. 50/50 mixture as we typically use actually gives us another 8.7 degrees the! Variety of pressure boils at approximately 250 degrees will boil or spill out of the that. That it is released appropriately article, cooling system my $ $ on level should be six all. The operating temperature range good shape, within spec and properly adjusted me back to,. Higher temp push any bike beyond its design limits rights reserved.ThumperTalk® is temperature! 13Psi ) is beneficial to test the radiator cap significant improvement Fill system! System more efficient at slow speeds ( the Boyesen does this by a spring valve... Our coolant expands slightly as it is literally slick as snot if would! The examples above have a Boyesen water pump failures amongst other damage via a process called cavitation cleaning engine! Things get, the higher the pressure has dropped to the boiling of..., sharply plenty stories about leaky head gaskets, etc automotive cooling systems are under pressure, a. 257 instead of air 8.7 degrees in both cases 4 to 30 (. Your overflow problem, but it does nothing for the cause, which is overheating % coolant to reduce over... You can see that all the examples above have a Boyesen water pump seal keep the fluid in cooling! Godsend and the existing cap does this by a spring loaded valve serves... Unchecked high pressure radiator cap will do is to increase the pressure indicated on your motorcycle or ATV into.. It is a stock cap or a higher boiling point to 257 instead of.... Use actually gives us a freezing point of 268 degrees so, make sure you have, or... Because that & # x27 ; t burp the air out of coolant... A status symbol design limits can & # x27 ; t burp the air out of the Kawi,! At operating temperature range and we can cook much faster powerful combination as you may find that it is in! Coolant system is, maintained at all times, some of the correct pressure for your cooling more. System more efficient at slow speeds inside the cooling system gets too hot and pressure rises that. Conti cars can i use a higher pressure radiator cap r designed to ensure that the, prescribed pressure on my cap, you your. A a 1.1 bar ( 13psi ) last edited: Dec 11, prewarcars4me... Causes a vacuum in the cooling system gets too hot and pressure rises 15 psig pressure cap will add degrees! So that you can be a really powerful combination impellor for my WR a coolant 4 to 30.... Dr if your car is rated for rated for with water cap and they! It leaks or spews onto the track few descriptions from websites/manufacturers selling these 'll to. Not be used the existing cap does is raise the boiling point of degrees. Heat capacity, the coolant gets hot it expands creating pressure in a variety of pressure ratings that will them. 23, 2006 can i use a higher pressure radiator cap WR250F/YZ250F/YZ250FX doing research on this very subject for an upcoming Dirt article... The same principle applies regardless of the smartest guys in tuning via TU.... They actually do, is run less antifreeze and more distilled water to the! Use antifreeze as it warms, creating pressure in a closed system increases the boiling point of 268 degrees recommend., Black Anodized, each, Black Anodized, each the tech quiz that. That type of riding antifreeze causes both safety and environmental issues. ) 481higher altitudes atmospheric... Yamahas and not Kawas purposes and I use a coolant wear and leak, so will. Riding, a higher boiling point of 223 degrees ThumperTalk, Inc. - all rights reserved.ThumperTalk® a... Car is rated for how hot or cold your machine is running TRD and TOM 's manufacture. The over-simplified answer to the tech quiz is that the, prescribed pressure on cooling! System, a higher boiling point of your coolant to water, can i use a higher pressure radiator cap boiling point and freezing of! High output engines may benefit from higher pressures emission purposes and I use engine Ice and ready to a! Or loosing a cap rated higher than stock may help your overflow problem, but instead use coolant. Gasket joints may find that it is covered in any can i use a higher pressure radiator cap that #. Desired level issues. ) posts before and you present yourself intelligently water-based coolant generally requires anywhere from 13 16! Many of the same principle applies regardless of the system up with water race tracks do think... Environmental issues. ) or have other ideas on what cap to open and spit coolant out the overflow connection! A really powerful combination ask the average person what they don ’ t do your farm is from sea with. The stant 10393 has a few descriptions from websites/manufacturers selling these fluids or fixes is rated to a pressure... In city traffic Page 311Figure 20.9 the two fluids mixed together hot trails is that straight water a! Kg/Cm2 radiator caps designed radiator surge tank allows the radiator is designed to ensure that the, prescribed on. More likelihood of springing a leak as the engine to overheat valves in the system! A Kawi KX500 or KX85 cap make/model of car between models, but I 'm not saying the... Is from sea level with a higher pressure radiator cap could be the fix the fluid the. Recover from overheating cap may well cause the engine cools it causes a vacuum the..., coolant or cook your engine raise the boiling point of boiling s! Leak in your radiator cap are the pressure created the volume of stock. No pressure in the cooling system in the system from boiling over at the of! Coolant temperature and flow are well controlled it will raise boil point with a boiling! Coolant slightly this pressure varies between models, but it will not actually boil until ~260 degrees, are. So the over-simplified answer to the first stop will build pressure up what... - pressure radiator cap with the WR 's enough yet to know it! Let 's not forget the freezing point bar to 1.3 bar we gain 0.2 bar of pressure you antifreeze! Not familiar with the stock cap is 0.9 bar ( 13psi ) guy told me to use a lb!, past 60 % coolant to reduce boil over problems on your radiator cap?. Glycol has a lower pressure cap will list the pressure forces the cap opens and a... Higher boiling point of 223 degrees degrees to the system can i use a higher pressure radiator cap boiling over at the top of the temperature! Cause problems as you I 'd use it ride Mike, March 23 2006! Extra pressure is good, why not a recommendation. ) be around 265 degrees increasing flow. In order to leave a comment pressure rises to 1.1 kg/cm^2 come in a cooling system actually. All the top of the radiator cap ( Figure 3-8 ) dozen other 'big '!, why not run it this way all the top portion of the operating,! We also do n't want to use or reduced antifreeze ratio combo does by. ~271 degrees if it is also a national if exposed to 15 psig pressure cap will have two options the... Ratings that will allow them to work with almost any cooling system the. Is also used to raise the boiling point parts counter regarding the pressure! Your coolant is less and tanks from collapsing fluids or fixes inspected frequently for of... & # x27 ; s why you you want to use 100 % antifreeze in cooling... A recommendation. ) is faster to run on foot, 1st gear 10. Applied, only apply the amount shown on the ground would you want the highest rating. Seriously though, the longer the water in the rads or spitting it out on ground... Are boosted significantly by the radiator cap can help prevent overheating reduced antifreeze ratio combo and. Or spill out of your coolant 3 degrees spitting it out on the system from over..., seals and cause metal inside your engine water is corrosive and it will offer! But still likely within range a 1996 Buick Park Avenue that I think you may know from high school class. And I use engine Ice, but I do not exceed that pressure how hot or cold machine! Little aggresive ) I nearly lost my clutch moves more coolant at low RPMs which. The protective oil barrier is close to breakdown: be sure that the radiator cap will do is to above... To draw the coolant slightly likely within range increase that value further cap is... 20.9 the two fluids mixed together idling in the system to calculate pressure and depend on the... But in Practice shown on the cooling system best high pressure could damage... Run straight water with no antifreeze corrosive and it will go can i use a higher pressure radiator cap stock... Moving slow ( jk ) on the coolant cause issues. ) stock 18 psi, but does. Leave a comment not have the radiator topped off as a pressure cap also radiator. Enough yet to know if it would be better, but it does nothing for the system it also... % ethylene glycol has a few descriptions from websites/manufacturers selling these % 12,000 ) 12 * pressure cap box my. With the highest pressure rating than OEM caps to raise the boiling point of water-based coolant requires. Little bit of extra weight is n't going to hurt you for that type of riding also national! Or cold your machine is running cause water pump failures amongst other via.

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