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-   -   Rebuilding 87 7m-gte (http://www.toyota-supra.info/forums/mkiii-supra/4339-rebuilding-87-7m-gte.html)

Reeves 04-21-2006 07:09 PM

Rebuilding 87 7m-gte
 
Hey guys!

Bad news... My engine took a crap! I'm not sure exactly what the problem is, but its making this rattling sound thats coming from the engine and my mechanic says I need a new engine. The previous owner (my brother) took really bad care of it and actually ran it without oil for i dont know how long due to busted valve covers.

So anyways I have decided im gonna get it rebuilt.. Im only 18 and have just gotten into cars not even a year ago (see my post history) so I need to know a few things.I want to put on a metal head gasket with some ARP studs while im getting it rebuilt. So here are the questions..

1.What kind head gasket should I get?
2.What is the purpose of the different thickness of headgaskets?
3.How do I know which one I want?
4. I have heard of composite headgaskets, would that be a better choice since they don't really require a machine shop? But im gonna have to go to the machine shop with a rebuild anyways... soooo??
5. I have also read about retorquing the studs, doesnt that involve taking the engine apart again (labor $$$$)? Is this necessary? Any alternatives?
6. What should all be included in the rebuild? I dont want them charging me for expensive stuff I don't need. These guys are trustworthy (family friend who owns a tire shop next door knows them), but still..

This is going to be my daily driver for awhile and I don't plan on getting too crazy with the horses. Just plan on doing exhaust, downpipe, boost controller, IC pipes, hks ssqv bov, maybe upgrade the turbine in the future, and whatever else goes with it, like injectors and anythign else I cant think of. But of course this will not all happen at the same time, it will be done gradually.

Thanks guys and please feel free to add anything you think I should know, im like a sponge waiting to absorb supra info!

P.S. Anyone in the San Diego area?

Benesesso 04-22-2006 12:23 AM

Good idea to pull the engine and get it rebuilt. It shouldn't cost too much to get real good flat surfaces on both block and head--AFTER they are tested for cracks.

I'd use a metal HG in that case. The nuts on the head studs can be rechecked by rmoving a few items and the cam/valve covers--you don't need to remove the cams too.

Reeves 04-22-2006 12:51 AM

Quote:

Originally Posted by Benesesso
AFTER they are tested for cracks.

Is this standard procedure for a rebuild/headgasket replacement or do I need to tell them to do this?

Quote:

Originally Posted by Benesesso
I'd use a metal HG in that case.

What thickness and brand headgasket though? Im sure it all depends.. but what does it depend on? :)

Whats the purpose of the different thickness'?

Reeves 04-22-2006 05:17 AM

What type of headgasket would be best? Bead, stopper, or grommet? Im thinking bead?

This is basically what I plan on telling the mechanic: I want to get the engine rebuilt, I want this here HG with these here ARP studs installed, test the head and block for cracks and THEN get some nice flat surfaces on the head and block. After it's done ill come in 2 weeks later and have them retorque (or whatever it is they do) the studs.. Am I missing anything?

Also, am i going to need to tell them the torq specs? (did I say that right?)

Supragirl available for comment? :)

Thanks for the quick responses so far!! I wouldnt know much about supras, or any car, if it wasnt for this forum!! =D.

rnoswal 04-22-2006 07:05 PM

Studs, 82 ft lbs.

Russ

ddmcse 04-22-2006 08:31 PM

I went with the stopper 2mm
been that way for 3 years
not cheap
the diff thickness is to compensate for how much you shaved off the block and head .(basically)

i have a few pictures on my website here is a shot of the gasket in question
http://www.ddmcse.com/turbo/images/mhg.JPG

Reeves 04-25-2006 01:10 AM

The stopper HG is a good $100 more than the bead HG at least.. Why would I choose the stopper over the bead? Im leaning towards the bead simply because of the price.

Will I be okay just buying a 2.0mm HG or should I wait and see how much needs to be shaved off the head and block? My mechanic is the one dealing with the machine shop, thats why I ask.

~$4000 sound about right for labor and parts on a rebuild?


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