Changing head gasket questions???

linuxgurupodboy · 02-13-2008, 05:59 AM

I just removed the head from my 7m and this is what I saw. It looks embarrassingly horrible. If anyone knows or thinks they know where it may have came from I'm all ears.

Paul[IMG]file:///C:/Documents%20and%20Settings/paul/Desktop/13022008%28005%29.jpg[/IMG][IMG]file:///C:/Documents%20and%20Settings/paul/Desktop/13022008%28003%29.jpg[/IMG]

rayshawn.434 · 02-13-2008, 09:12 AM

i cant see a good pic of it but is all the pistions like that?

linuxgurupodboy · 02-13-2008, 09:31 AM

Yeah, it feels like a sandy gritty substance, comes off easy.

rayshawn.434 · 02-13-2008, 09:49 AM

if it black its just carbon build up i would just clean it off and dont worry about it. as long as it did not do any damage to the pistions like deep cuts

j3pz · 02-13-2008, 01:46 PM

nfi what it is. didnt come over the bottom of the head did it? is it metalic?

Pretaco · 02-13-2008, 04:27 PM

What were the syptoms before you took the head off?

What does the bottom of the head look like?

From those pics, I would say look at the cylinder walls closely for vertical scratches, and see if the crosshatching pattern is still visable in any of them.

I would also suspect that the head gasket was bad between the #5 & 6 cylinders from the clean spot between those cylinders, but the #6 piston still has carbon build up, so no coolant was getting in there.

But those pics are pretty crappy to be honest.

Ray.

02-13-2008, 05:59 AM	#1
linuxgurupodboy Intake Join Date: May 2007 Location: New Zealand Posts: 30	Changing head gasket questions??? I just removed the head from my 7m and this is what I saw. It looks embarrassingly horrible. If anyone knows or thinks they know where it may have came from I'm all ears. Paul[IMG]file:///C:/Documents%20and%20Settings/paul/Desktop/13022008%28005%29.jpg[/IMG][IMG]file:///C:/Documents%20and%20Settings/paul/Desktop/13022008%28003%29.jpg[/IMG] Attached Thumbnails __________________ 1990 3.0Ltr GT Turbo @8psi Manual (Converted)

02-13-2008, 09:31 AM	#3
linuxgurupodboy Intake Join Date: May 2007 Location: New Zealand Posts: 30	Yeah, it feels like a sandy gritty substance, comes off easy. __________________ 1990 3.0Ltr GT Turbo @8psi Manual (Converted)

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02-13-2008, 09:12 AM	#2
rayshawn.434 Stock Join Date: Feb 2008 Location: Danville Posts: 7	i cant see a good pic of it but is all the pistions like that?

02-13-2008, 09:49 AM	#4
rayshawn.434 Stock Join Date: Feb 2008 Location: Danville Posts: 7	if it black its just carbon build up i would just clean it off and dont worry about it. as long as it did not do any damage to the pistions like deep cuts

02-13-2008, 01:46 PM	#5
j3pz 500whp yet? Join Date: Nov 2005 Location: Mechanicsville, MD, US of A, 20659 Posts: 1,060	nfi what it is. didnt come over the bottom of the head did it? is it metalic? __________________ 88 N/A w/ 5spd - stock - not running, bhg 87 turbo/targa w/ 5spd- fidanza light weight flywheel, new oem slave cylinder, apexi air filter, no ac and no heat

02-13-2008, 04:27 PM	#6
Pretaco 3" Exhaust Join Date: Dec 2007 Location: Glendale, AZ Posts: 126	What were the syptoms before you took the head off? What does the bottom of the head look like? From those pics, I would say look at the cylinder walls closely for vertical scratches, and see if the crosshatching pattern is still visable in any of them. I would also suspect that the head gasket was bad between the #5 & 6 cylinders from the clean spot between those cylinders, but the #6 piston still has carbon build up, so no coolant was getting in there. But those pics are pretty crappy to be honest. Ray. __________________ '88 Supra Targa 5 speed w/ '90 7M-GTE Currently Running Good For Sale: Light blue body parts, Blue interior parts all from '90 supra targa turbo manual. Also for sale: R154 trans, brake pedal, master cylinder, booster, abs actuator, sensors, abs ecu, driveshaft, 3.90 lsd rear end, radiator, wiring, speedo cable, 8 saw blade wheels, '88 ecu, relays, cruise control actuator (bad cable), empty fuel tank, etc....