How long can I go

wyosupra · 07-31-2007, 01:30 PM

I just brought home my dream car, 1991 turbo supra. It must have a leaky head gasket, when its warm bubbles come out of the overflow tube. Is it safe to drive until it goes, or is it certain it is leaking? There are not that many bubbles? Thanks

dcrusupra · 07-31-2007, 03:20 PM

Before you drive the car again, get a block tester from your local auto parts store. Is it overheating? You DO NOT want to drive it if it's overheating. You'll start warping the head or maybe even the block. And if it's blown enough the coolant is getting into the oil and it could cause you to get rod knock. All you need is a VERY small amount of coolant to come in contact with the rod bearing and you'll get rod knock.

wyosupra · 07-31-2007, 04:50 PM

It doesnt overheat, and i changed to oil to make sure there was no milky color, it was fine. I can drive it and let it idle for as long as i want and it doesnt overheat. So just do a block test? Thanks

dcrusupra · 07-31-2007, 05:01 PM

Well, if it's not overheating, then it shouldnt be a headgasket. But you might as well get one just in case. The only thing i can think of now is that your cooling system still has some air in it. Try to burp it. How does the radiator cap look under it? Is it all cracked?

wyosupra · 07-31-2007, 05:40 PM

I will check, the cap, should i compression check it both warm and cold? Anything else I can do to check, and how do i burp it? Pat it on the back?

wyosupra · 07-31-2007, 08:40 PM

? anyone thanks

07-31-2007, 01:30 PM	#1
wyosupra 3" Exhaust Join Date: Jan 2007 Location: Evanston Wy Posts: 86	How long can I go I just brought home my dream car, 1991 turbo supra. It must have a leaky head gasket, when its warm bubbles come out of the overflow tube. Is it safe to drive until it goes, or is it certain it is leaking? There are not that many bubbles? Thanks

07-31-2007, 03:20 PM	#2
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	Before you drive the car again, get a block tester from your local auto parts store. Is it overheating? You DO NOT want to drive it if it's overheating. You'll start warping the head or maybe even the block. And if it's blown enough the coolant is getting into the oil and it could cause you to get rod knock. All you need is a VERY small amount of coolant to come in contact with the rod bearing and you'll get rod knock. __________________ New Rebuild My CarDomain

07-31-2007, 04:50 PM	#3
wyosupra 3" Exhaust Join Date: Jan 2007 Location: Evanston Wy Posts: 86	It doesnt overheat, and i changed to oil to make sure there was no milky color, it was fine. I can drive it and let it idle for as long as i want and it doesnt overheat. So just do a block test? Thanks __________________ 1990 Targa Turbo apexi 3" MHG FOR SALE!! 1988 Supra Targa Top Turbo 3" Magnaflow

07-31-2007, 05:01 PM	#4
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	Well, if it's not overheating, then it shouldnt be a headgasket. But you might as well get one just in case. The only thing i can think of now is that your cooling system still has some air in it. Try to burp it. How does the radiator cap look under it? Is it all cracked? __________________ New Rebuild My CarDomain

07-31-2007, 05:40 PM	#5
wyosupra 3" Exhaust Join Date: Jan 2007 Location: Evanston Wy Posts: 86	I will check, the cap, should i compression check it both warm and cold? Anything else I can do to check, and how do i burp it? Pat it on the back? __________________ 1990 Targa Turbo apexi 3" MHG FOR SALE!! 1988 Supra Targa Top Turbo 3" Magnaflow

07-31-2007, 08:40 PM	#6
wyosupra 3" Exhaust Join Date: Jan 2007 Location: Evanston Wy Posts: 86	? anyone thanks __________________ 1990 Targa Turbo apexi 3" MHG FOR SALE!! 1988 Supra Targa Top Turbo 3" Magnaflow

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