Little Coolant Loss

abhattan · 08-01-2007, 12:24 AM

I have the same problem, but my cap is good. I did a compression test and got 110psi on #1 cylinder, the rest was at 150psi +/-4psi. What could it be?

dcrusupra · 08-01-2007, 12:38 AM

Quote:

Originally Posted by abhattan

I have the same problem, but my cap is good. I did a compression test and got 110psi on #1 cylinder, the rest was at 150psi +/-4psi. What could it be?

You need a rebuild bud. It shouldn't go below 120 psi nor should it be above a 15 psi difference among the 6 cylinders.

abhattan · 08-02-2007, 09:58 PM

It sucks when you know what's wrong, but don't want to believe it.

dcrusupra · 08-02-2007, 11:13 PM

I kno the feeling. If you have the cash, rebuild it. A chance to install forged internals.

ddmcse · 08-03-2007, 01:10 PM

abhattan
did you do any prep to that engine as in "metal head gasket " before you added all that extra boost ?
i'm just curious
i can't imagine you're only getting 10 lbs are you guessing ?
do you have a real boost gauge ?

abhattan · 08-04-2007, 01:17 PM

I installed a mechanical boost gauge and then shimmed the wastegate until I got 9-10lbs. No head gasket done yet. Thinking about doing it in a about a month or so. But could a bad head gasket cause low compression in #1 cylinder and not have any serious leaks?

ddmcse · 08-06-2007, 12:41 PM

a BHG usually hits #6 or #1
welcome to the club

08-02-2007, 09:58 PM	#3
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	It sucks when you know what's wrong, but don't want to believe it. __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)

08-02-2007, 11:13 PM	#4
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	I kno the feeling. If you have the cash, rebuild it. A chance to install forged internals. __________________ New Rebuild My CarDomain

08-03-2007, 01:10 PM	#5
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	abhattan did you do any prep to that engine as in "metal head gasket " before you added all that extra boost ? i'm just curious i can't imagine you're only getting 10 lbs are you guessing ? do you have a real boost gauge ? __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

08-06-2007, 12:41 PM	#7
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	a BHG usually hits #6 or #1 welcome to the club __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

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08-01-2007, 12:24 AM	#1
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	I have the same problem, but my cap is good. I did a compression test and got 110psi on #1 cylinder, the rest was at 150psi +/-4psi. What could it be? __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)

08-04-2007, 01:17 PM	#6
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	I installed a mechanical boost gauge and then shimmed the wastegate until I got 9-10lbs. No head gasket done yet. Thinking about doing it in a about a month or so. But could a bad head gasket cause low compression in #1 cylinder and not have any serious leaks? __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)