bhg points?

sportriderseattle · 11-20-2006, 08:43 PM

I've had two MKIII's, my 86.5 for 6 years putting on 35K miles and no probs whatsoever and my 87 has 67K miles, had it for 1-1/2 years and no probs. I thinks its about two issues: 1) maintenance (coolant system related of course, besides everything else we should do) and, 2) how you drive your car (racing it, driving it in HOT climates). There are many other cars that blow their head gaskets, not just the Supra.

So, most importantly, KEEP AN EYE ON THAT TEMPERATURE GUAGE.

RTZ · 11-21-2006, 12:51 AM

Good thread, i have had my turbo 7M for 6 months, and have modded it a fair bit - i am almost waiting for the HG to go, but so far so good!

The car has 260,000 kms so is well run in - but drives mint.
I only drive it on weekends and i give it a damn good thrash every now and then but not constantly.

I am wondering if the HG has already been taken care of by previous owner... to hard to tell.

I guess its a matter of 'if it aint broke dont fix it' haha!

rnoswal · 11-21-2006, 02:07 PM

From what I have read here, it is a matter of Toyota not torqueing the heads properly from the factory. I sounds almost as if they never did it correctly with the MK111's. Most of the guys that really know the cars inside and out recommend at least torqueing the stock bolts about 20 lbs more. I am not sure if Toyota ever came out with a bulletin regarding this and maybe some of the other more experienced guys might know.

It seems that most have replaced their gaskets at the 100k mark, give or take a few miles. So maintenance doesn't seem to matter too much because of the problem with the original torqueing. So if you have quite a bit of miles and it doesn't leak, then more than likely it has been re-torqued or the gasket has been replaced. Or, and if it is still stock, it will eventually leak. There is no mention though of anyone having to replace the gasket after the work has been done, unless the Turbo has really been turned up.

I guess they fixed the problem on the next generation in the MK1V's.

Russ

11-20-2006, 08:43 PM	#1
sportriderseattle 3" Exhaust Join Date: Nov 2005 Location: Seattle (Downtown) Posts: 67	I've had two MKIII's, my 86.5 for 6 years putting on 35K miles and no probs whatsoever and my 87 has 67K miles, had it for 1-1/2 years and no probs. I thinks its about two issues: 1) maintenance (coolant system related of course, besides everything else we should do) and, 2) how you drive your car (racing it, driving it in HOT climates). There are many other cars that blow their head gaskets, not just the Supra. So, most importantly, KEEP AN EYE ON THAT TEMPERATURE GUAGE. __________________ Dan http://www.cardomain.com/ride/2200872 1987 Toyota Supra Turbo Targa, 5 speed, Light blue, 67K miles, MKIV TT polished wheels

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11-21-2006, 12:51 AM	#2
RTZ Stock Join Date: Aug 2006 Location: New Zealand Posts: 17	Good thread, i have had my turbo 7M for 6 months, and have modded it a fair bit - i am almost waiting for the HG to go, but so far so good! The car has 260,000 kms so is well run in - but drives mint. I only drive it on weekends and i give it a damn good thrash every now and then but not constantly. I am wondering if the HG has already been taken care of by previous owner... to hard to tell. I guess its a matter of 'if it aint broke dont fix it' haha!

11-21-2006, 02:07 PM	#3
rnoswal Lexus & 550's Join Date: Apr 2005 Location: Bossier City LA Posts: 556	From what I have read here, it is a matter of Toyota not torqueing the heads properly from the factory. I sounds almost as if they never did it correctly with the MK111's. Most of the guys that really know the cars inside and out recommend at least torqueing the stock bolts about 20 lbs more. I am not sure if Toyota ever came out with a bulletin regarding this and maybe some of the other more experienced guys might know. It seems that most have replaced their gaskets at the 100k mark, give or take a few miles. So maintenance doesn't seem to matter too much because of the problem with the original torqueing. So if you have quite a bit of miles and it doesn't leak, then more than likely it has been re-torqued or the gasket has been replaced. Or, and if it is still stock, it will eventually leak. There is no mention though of anyone having to replace the gasket after the work has been done, unless the Turbo has really been turned up. I guess they fixed the problem on the next generation in the MK1V's. Russ