Blown Head Gasket repair w/pics

Devicehead · 10-21-2009, 09:25 PM

Hi boys n' girls. New to the boards here. Thought I'd chime in on my rebuild project: 1987 Turbo.
The Story:
After a brief road race with a guy that works a couple doors down from me, the car started running bad with missfires and the like. After about a few failed attempts at quick-fixing it, I decided to finally thrash into it and get to the root of the problems.
Pulled the cylinder head and found the culprit!

Head Gasket - Blown between Cylinder 1 and 2. Fail. -.-
After further inspection of the lower end, (Block and pistons) I decided the whole engine was going to need rebirthing. So I sent the block and head out for re-machining.
While that was going on, I decided a fresh engine was worthy of a respectable home so I gutted the rest of the car and prepped it for competition re-assembling. >

And Then things started to brighten up a bit...

Then the engine arrived...

I'll have more pics of the head and other stuff later but, were getting close to going back in with the powerplant.

Tony · 10-23-2009, 10:37 PM

(From my thread http://www.toyota-supra.info/forums/...-problems.html)

Hey everyone,

I bought my 88 Supra Turbo with a BHG a while back, and have since done the following to it:

New HG and upper gasket set
ARP Bolts (70ft/lb)
Different turbo head purchased (old was warped .020")
Head machined flat, checked, and valves reseated
Set of completely refurbished fuel injectors (ultrasonically cleaned and flow tested)
Vacuum systed completely gone through and everything is properly connected.
Also tested every coil pack for spark (looked for spark in a removed plug attached to each coil pack)

Feels like a cylinder or two isn't firing.
Here's a video (don't mind the squeak, alternator belt is not tensioned all the way)

http://www.youtube.com/watch?v=1BudtjtPh70

The car starts but runs terribly, once the RPMs go past 2500, all power is lost until it drops below that.
If you keep the accelerator floored, it will go up past 2500 RPMS, then fall back to it over and over.

Can someone help me?
I want to get this thing on the road!

10-21-2009, 09:25 PM	#1
Devicehead Stock Join Date: Oct 2009 Location: Maryland Posts: 5	Hi boys n' girls. New to the boards here. Thought I'd chime in on my rebuild project: 1987 Turbo. The Story: After a brief road race with a guy that works a couple doors down from me, the car started running bad with missfires and the like. After about a few failed attempts at quick-fixing it, I decided to finally thrash into it and get to the root of the problems. Pulled the cylinder head and found the culprit! Head Gasket - Blown between Cylinder 1 and 2. Fail. -.- After further inspection of the lower end, (Block and pistons) I decided the whole engine was going to need rebirthing. So I sent the block and head out for re-machining. While that was going on, I decided a fresh engine was worthy of a respectable home so I gutted the rest of the car and prepped it for competition re-assembling. > And Then things started to brighten up a bit... Then the engine arrived... I'll have more pics of the head and other stuff later but, were getting close to going back in with the powerplant. Last edited by Devicehead; 10-21-2009 at 09:42 PM.

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10-23-2009, 10:37 PM	#2
Tony Stock Join Date: Aug 2009 Location: Indiana Posts: 15	(From my thread http://www.toyota-supra.info/forums/...-problems.html) Hey everyone, I bought my 88 Supra Turbo with a BHG a while back, and have since done the following to it: New HG and upper gasket set ARP Bolts (70ft/lb) Different turbo head purchased (old was warped .020") Head machined flat, checked, and valves reseated Set of completely refurbished fuel injectors (ultrasonically cleaned and flow tested) Vacuum systed completely gone through and everything is properly connected. Also tested every coil pack for spark (looked for spark in a removed plug attached to each coil pack) Feels like a cylinder or two isn't firing. Here's a video (don't mind the squeak, alternator belt is not tensioned all the way) http://www.youtube.com/watch?v=1BudtjtPh70 The car starts but runs terribly, once the RPMs go past 2500, all power is lost until it drops below that. If you keep the accelerator floored, it will go up past 2500 RPMS, then fall back to it over and over. Can someone help me? I want to get this thing on the road!