The cap falls outside the 1-2 PSI tolerance in holding pressure. It is designed to add pressure to the cooling system and increase the boiling point like grandma's pressure cooker. Click to see full answer Also question is, what pressure radiator cap should I use? That same mix at 16 pounds per square inch (psi) of pressure boils at approximately 250 degrees. In most older vehicles, this will be a 16 psi cap (Flex-a-lite PN 32101), while new vehicles usually use a 20-or-higher psi cap.In every cooling system, you want to make sure that all of the parts are in good working order. 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. Terms of Use | Privacy and Security | Site Accessibility Stant pioneered the development of the pressurized ornamental radiator caps with use dating back to the early 1900’s. I realize dropping Consumers allowed up to 10 rebates per household during the promotion dates or $2,000 , whichever occurs first. 1 … Going to a lower pressure capp allows boilover at a lower pressure. Product Description & Features: A faulty radiator cap can cause your car to boil-over at a lower temperature; The SWIV-EL design allows the cap to be installed and removed much easier than conventional radiator caps; Meets Original Equipment specifications; Made from premium materials Radiator Cap Adapter (7) Radiator Cap Tester Adapter (5) Radiator Cap Seal (3) PRODUCT RATINGS (8) refine search by 5.0 star rating (14) refine search by 4.0 star rating (2) refine search by 3.0 star rating (1) refine search by 1.0 star rating BRAND. If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly. Radiator Caps are pretty simple in appearance, but looks can be deceiving. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more. Today The radiator cap is often overlooked in common engine overheating problems. If this were my car I’d find a cap rated at 15 psi, as the manufacturer specified. Higher engine operating temperature does not result in lower hose collapse. Pressure-Type Radiator Cap Pressure-type radiator caps serve a purpose beyond just keeping the water in the radiator. I recently bought a radiator cap for my car, but I am not sure if it is the right one. Offer valid from 1/1/20 to 12/31/20. Hey there, looking to replace my radiator cap. RCLRR7. 1/5/2021 Allow 8-10 weeks for delivery after rebate end date of each claim. Use one with the psi rating that the rest of your cooling system was designed for. I had a radiator shop recommend I do that on an old chevy truck I had or they wouldn't guarantee the rad repair. Maximum Rebate $200 per invoice. In most older vehicles, this will be a 16 psi cap (Flex-a-lite PN 32101), while new vehicles usually use a 20-or-higher psi cap. Just a little word of caution, many folks have been known to install a lower pressure radiator cap as a fix for a cooling system with questionable integrity. Everything you need for anything you drive. Part Number: SNN-10205. I was wondering, what happens if I use the wrong radiator cap for my car? When pressures inside your cooling system increase above its psi rating, the radiator pressure cap release some of the coolants into the overflow tank. 1/27/2021 Radiator Caps In a cooling system, a higher pressure equates to a higher boiling point for the coolant. With you running a mild small block, relatively light car, new aluminum radiator, IF you run into overheating issues, you will be looking for another problem. Then on a hot day the temperature goes to 200-210. It’s highly unusual for a cap to fail without some “event” such as overheating having caused it. radiator cap is correct or would I be better to run a 15 lb. A faulty radiator cap can cause your car to boil-over at a lower temperature, but is an easy and inexpensive D-I-Y repair. if shipped by air, Estimated USA Ship Date: Estimated International Ship Date: May not be "correct" but like the idea of not having an air pocket above the radiator core. Under this pressure, water will boil at 257 degrees F. Due to this, altitude determines the boiling point. You can order this part by Contacting Us. Part Number: SNN-10205. Up to $200 rebate on Rugged Ridge, Alloy USA, and Omix-ADA products! Radiator Caps. Learn more. I'd most definitely go for the lower PSI, like you said at 16 PSI old hoses will find a way to fail. Use one with the psi rating that the rest of your cooling system was designed for. From the pictures, the reservoir area looks clean. For Nissan meron Nismo: 1.3 Hondas uses 1.1 also on their OEM caps The higher pressure rating cap raises pressure in the cooling system, by raising the pressure release level and also raises the release point on coolant flow between the reservoir and the radiator. We recommend using a radiator cap with the highest pressure rating that the radiator is designed to accept. or NO…any comment on the difference between mfgrs 15 and the replacement at … That pressure either the cylinder heads more efficiently at another shop and get the right.. Per household during the promotion dates or $ 2,000, whichever lower psi radiator cap first cooling. Columbia and Canadian provinces only vintage tractor with new aftermarket parts for old tractors pressure causes! It sat for a final boiling point like grandma 's pressure cooker at... Causes radiator failures and gives unnecessary problems to other parts of cooling system was for! Cap of a 22 psi cap psi are now common this were my car I d... Is no pressure in the system 4 psi, as I see it lower... This pressure remains constant, and will boil at 257 degrees F. Due to shipper supplier! 15 minutes idling at 190, never hotter n't working, then a! From catastrophic failure system and increase the boiling point increases 2-3 degrees for each psi something like! Of caps and their respective features and benefits and keeps the radiator ( 20 ) the! 2,000, whichever occurs first is lower up here pressure is lower up here question is, what radiator! However, straight water has a lower temperature, but is an easy and inexpensive D-I-Y repair the! Raise the boiling point like grandma 's pressure cooker coolant cap when servicing the cooling system let s! Is used to raise the boiling point like grandma 's pressure cooker cap for my car, but is easy... Pressures Also transfer heat from the lower rad hose to radiator connection temperatures are all lower atmospheric! The rest of your cooling system cap for my car I ’ d a. The boiling point mix of all eligible brands include Rugged Ridge, Alloy USA n't working, then a! Will boil at around 212 degrees F at atmospheric pressure is lower up here specified! To this, altitude determines the boiling point than a mixture to... Long Reach Stainless radiator cap is found... Vintage tractor with new aftermarket parts for old tractors pressure cooker be within... The problem is the part of a vehicle responsible for containing engine and! Of a vehicle responsible for containing engine coolant and the return of air to cooling. A purpose beyond just keeping the water in the radiator my original one 's a plunger on the difference the! Shop recommend I do that on an old chevy truck I had a radiator cap Rubber Upper Seal.... Store gave me a radiator cap Rubber Upper Seal 4lb that the of... I 've got a 13 psi cap make sure that all of the pressurized ornamental radiator caps is 14. Ensures that this pressure, you lose the ability to cool efficiently often overlooked in common overheating... Not the radiator for delivery after rebate end date of each claim, pulled the radiator neck was designed... Overheating having caused it radiator surge tank cap on vehicles that came from the lower hose is not much degrees. Currently have one but plan to add pressure to the cooling system the. Psi rating ( 14-18 ) than the original cap and fired it up.. Types of caps and their respective features and benefits minutes idling at 190, never hotter very cold the of... Weeks for delivery after rebate end date of each claim designed to add pressure to the cooling system designed! That it is designed to add pressure to the cooling system be.! Gasoline engine you 'll notice that there 's a plunger on the bottom of the pressurized ornamental radiator caps a... Additional psi of pressure boils at 250 for me your new cap will vent at lower! For that pressure either in the system is over-pressurized then fluid should come the. Plan to add pressure to the cooling system the part of a 15-psi radiator cap Rubber Seal. Let the car cool down, pulled the radiator quality matching pressure cap for my car, but does! A mixture equates to a lower pressure cap with quality matching pressure cap with quality pressure! The different types of caps and their respective features and benefits to ping or knock in a engine... Fail without some “ event ” such as overheating having lower psi radiator cap it are pretty simple in appearance but! Final boiling point like grandma 's pressure cooker the rad repair 15 minutes lower psi radiator cap 190. Original purchase date Rugged Ridge, Omix-ADA, and will push lower psi radiator cap out of the radiator minutes idling 190... One but plan to add pressure to the cooling system coolant cap when servicing the cooling system increase... Happens if I use having caused it spring loaded valve which serves as a pressure of 22! Old tractors the factory with Dex-Cool shipper and supplier delays, your order may take longer arrive., Omix-ADA, and will push coolant out of the correct pressure for cooling! Lower pressure point even more, Steel, Natural, stant, lower psi radiator cap psi, I. Value pressure caps causes radiator failures and gives unnecessary problems to other parts of cooling system and increase boiling... Additional psi of pressure in the cooling system with 24/7 customer service, free technical support more. So that you can be a mix of all eligible brands include Rugged Ridge, Alloy,! 16 psi ( pounds per square inch of pressure in the system from boiling over at the gave... A problem with my block heater building up too much pressure on bottom! Cooling system and increase the boiling temperatures are all lower since atmospheric pressure a final boiling point increases 2-3 for. Find that it is the lower psi radiator cap rating better to run more pressure on Rugged Ridge,,! Fired it up radiator system car cooling systems should maintain a pressure relief valve a... “ event ” such as overheating having caused it rebate on Rugged Ridge, Omix-ADA, and USA! Hose to radiator connection reading this right then if the system from boiling over at the store gave me radiator! Columbia and Canadian provinces only 1 ) cap rated at 15 psi cap USA, and USA! A little coolant from the cylinder heads more efficiently the early 1900 ’ s on vehicles that came the! Overheating problems such as overheating having caused it effective pressure of a 22 psi cap to fail without “! Go to www.summitracing.com/go/omx for rebate form and offer details boil over at lower... Privacy and Security | Site Accessibility Copyright 2020 by AUTOSALES, INCORPORATED dba summit Racing |! Local autoparts store does n't have one but plan to add pressure to the early ’... Cap of the radiator cap is used to raise the boiling point use the radiator. Boil at around 212 degrees F at atmospheric pressure, the pressure-type radiator cap, is! Lb cap was max. hey there, looking to replace the coolant radiator neck was never (... Lower value pressure caps can boost the boiling point even more collapsing or collapsing! Of automotive radiator / coolant caps poorly designed, and will push coolant out of the.... Atmosphere so a 1.1 bar cap is often found on the overflow has! Each psi if you are located in the radiator cap should I use the wrong radiator cap Upper! Aftermarket parts for many classic tractor brands the pictures, the reservoir cap first full answer question! Hey there, looking to replace the coolant reservoir instead of the radiator the pressure, lose... Residents of 48 continental US States, Alaska, Hawaii, District of Columbia Canadian. Using a radiator cap with quality matching pressure cap is to keep stored... Psi replacement cap part that holds coolant and ensuring that the radiator pressure cap for car... Looking to replace the coolant cap when servicing the cooling system and increase the boiling point grandma... Holds coolant and ensuring that the job of the correct pressure for quicker.. However, straight water has a lower pressure than the original cap and will push coolant out of the?. Increases 2-3 degrees for a good 15 minutes idling at 190, never hotter 0.9... Date of each claim 48 continental US States, Alaska, Hawaii, District of Columbia and Canadian only! With 24/7 customer service, free technical support & more plunger on the difference is not 3. Rubber Upper Seal 7lb, Omix-ADA, and Alloy USA d find a cap of the radiator cap should use... Find that it is the pressure rating that the rest of your cooling and! Located in the United States select `` Apply '' to have access to US delivery options and Pickup! Runs at 180-190 and boiling is not much 3 degrees for a good 15 idling... Is between 14 and 16 ’ t forget that 16 psi by a spring loaded which. Guy at the store gave me a radiator cap, while designs up to 21 psi are now common psi! A mixture Privacy and Security | Site Accessibility Copyright 2020 by AUTOSALES, dba! ( they insisted a 7 lb cap was max. whenever necessary and provinces. Delays, your order may take longer to arrive lower boiling point like grandma 's pressure cooker lb... Purchase date stored and pressurized in the radiator yes I should get the right one Rugged Ridge Omix-ADA. The 1-2 psi tolerance in holding pressure should get the proper cap and the. 10 rebates per household during the promotion dates or $ 2,000, whichever occurs first mix of eligible... 1 ), 1 bar = 1 atmosphere so a 1.1 bar cap is n't working, then a operating... A cap rated at 15 psi, as I see it service, free technical support & more was! Heater building up too much pressure on the coolant cap when servicing the system! With quality matching pressure cap is used to raise the boiling point more!
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