hey whats up g2… so i have a 90 db1 integra ive recently swapped in a newer b18b from the stock a1. ever since ive been building pressure in my cooling system, i removed the thermostat, im using my a1 water pump not that i think it makes a difference… and ive just changed my head gasket and tried a few radiator caps i have laying around and still building pressure. however i am using water at the moment until i figure this out and its boiling over, could that have anything to do?? any comments would be appreciated
water boils at a lower temperature than coolant. it will also cause corrosion to internal parts. get a 50/50 mix in there.
have you extended the wires for the rad fan switch to the t stat housing and have observed proper operation of the fan?
i have wired the fans so that they are turned on all the time when the car is on… and yea i figured that about the water boiling because when i see the upper hose is building pressure i touch it and i feel the water boiling inside…
first off, you post is confussing. the cooling system in your car USES pressure to PREVENT boiling. if its boiling, then the system is NOT holding pressure. so you have a leak some where. you can get a leak test kit at almost any autoparts store. since youve tried different caps, I would start there.
are you sure you dont have any air in the system? make sure you buy the correct rad cap… and make sure the thermostat is opening and not staying stuck closed…
wel it was leaaing from the C shaped hose that goes from the head to the block but lucky for me it was cut right at the clamp so a just cut it there and slapped it back on. put the 50/50 in there and just went for a 10 minute drive and everything seems well THANKS GUYS hopefully i wont be posting again saying its over heating.
make sure you bled the system for air
FYI, simply putting a 50/50 mix in opposed to straight water will not solve any sort of problem indicated by the symptoms listed, and if it does, it’s a bandaid, not a solution. The addition of anti-freeze does raise the boiling point, but it does so minimally. Like Glynn mentioned, the cooling system uses pressure to increase the boiling point, not anti-freeze. Our engines run perfectly fine on straight water, I’ve done it a lot, especially when troubleshooting cooling system problems. The more important reasons to use antifreeze are a) prevent freezing; and b) prevent corrosion and/or buildup within the system.
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