I need help with my Mishimoto radiator, I hit a tire on the freeway, damaging my old Hinson radiator. So i called on AAA to repair the car. I tried to get a new radiator from Hinson and Samburg, but had no luck. So i got stuck purchasing the Mishimoto radiator. It looks nice and fits well, but it leaks from the radiator cap. The cap on the AST tank is the highest point of the cooling system and seals fine. I have a 20lb radiator cap on the radiator and a 12lb on the AST.
The lower cap on the radiator leaks bad, despite its high 20lb rating. I tried two different high pressure caps on the radiator and they both leaked. My question to you is: does someone sell a radiator cap that does not vent off pressure? Im trying to avoid pulling off my radiator and having the filler neck welded up.
