Bad Rad Cap Question..
07-01-2018, 08:08 PM
#2
Rennlist Member
It may or may not release pressure at the correct rating.
Possibly blowing gaskets, hoses, the expansion tank etc. Good thing you caught it when you did.
Possibly blowing gaskets, hoses, the expansion tank etc. Good thing you caught it when you did.
07-01-2018, 08:29 PM
#3
Rennlist Member
Thread Starter
Well see.
I run normally just above white line, now the last two days, almost to it today, and absolutely to it yesterday when it was 100+.
Lost a gallon of coolant yesterday too, found this today while poking around for "why"..
I run normally just above white line, now the last two days, almost to it today, and absolutely to it yesterday when it was 100+.
Lost a gallon of coolant yesterday too, found this today while poking around for "why"..
07-01-2018, 09:39 PM
#4
Chronic Tool Dropper
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Was it installed ok? I’ve seen that when one side doesn’t get hooked correctly.
07-01-2018, 11:09 PM
#5
Rennlist Member
If it's bent more pressure can leak out along with coolant down the overflow tube instead of pressure building up as well.
Especially if coolant loss is your primary concern right now.
Have you looked for a lot of steam shooting out of the overflow hose?
Especially if coolant loss is your primary concern right now.
Have you looked for a lot of steam shooting out of the overflow hose?
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07-02-2018, 06:30 AM
#9
Rennlist Member
Judging by the photo you submitted I would think that is a most unusual failure and what has happened to cause it is of interest.
The consequence of such failure would seem pretty simple. The expansion tank cannot seal and vehicle dynamics will then cause coolant to escape, be it from braking or cornering- even acceleration might chuck soemthing out initially. Remember if you corner at 1G the liquid level in the tank will have a 45 degree gradient and if there is no seal it will simply be forced out of the tank and onto the deck . Eventually if you lose enough liquid it will stop coming out just a question of how much has to escape before that happens.
The stock system does not boil up at normal running temperatures when at atmospheric pressure but obviously the safety margins to prevent boiling inherent in a fully functional system are reduced.. Pressure caps are on my "10 year replacement" list with hoses etc but they are cheap enough to be replaced every 5 years
The consequence of such failure would seem pretty simple. The expansion tank cannot seal and vehicle dynamics will then cause coolant to escape, be it from braking or cornering- even acceleration might chuck soemthing out initially. Remember if you corner at 1G the liquid level in the tank will have a 45 degree gradient and if there is no seal it will simply be forced out of the tank and onto the deck . Eventually if you lose enough liquid it will stop coming out just a question of how much has to escape before that happens.
The stock system does not boil up at normal running temperatures when at atmospheric pressure but obviously the safety margins to prevent boiling inherent in a fully functional system are reduced.. Pressure caps are on my "10 year replacement" list with hoses etc but they are cheap enough to be replaced every 5 years