question about supra turbo

[7MGTE_]

i bought a supra turbo but its not a targra top or sunroof its a hard top
its got a 7mgte engine in it and i was woundering if it is rare or not
does any body have a head for a turbo or know any were to get one

[projectsupramk3]

The hardtop isn't rare, a turbo hardtop isn't rare. It's simply the lesser made of the MKIII. Targa's definetly outnumber hardtops and turbo targa's are the least produced of the USDM MKIII Supra. As for the head you should first try local/area junkyards. Turbo and N/A heads are the same except for a cam in the 86.5-88 N/A is slightly different, but it's not a big deal, most turbo owners actually swap it in. If you somehow can't find any from all the junkyards then try supraforums.com MKIII parts for sale section, but it's going to be heavy so shipping isn't going to be cheap.

[7MGTE_]

the car has a very loud knock but we can't figure it out. i talked to some one who knows cars and he sade it was probly a spun bearing but i dont know. the person i talked to said it will probly need a new motor but i dont know i mite just pull the engine and take a look at it. see im in auto tech and i kinda know what im doing . im thinking that i mite just buy that motor that the dude i talked to and take the turbo off my supra and put it on the other motor then put itin my car

[projectsupramk3]

If it's a loud knock then yes, thats rod knock, it's common and pretty much assured if you run the 7m low on oil. The more you run the engine the worse the crank and rod will get trashed, eventually to the point where neither of them will be usable anymore. You could do a full rebuild on the engine, or you could buy an imported JDM 7m-gte, it's your call. What is the engine that "the dude" is trying to sell you? If it's a 7m-ge your going to have more trouble than it's worth IMO, a 7m-gte will be perfect as long as it doesn't knock or have any symptoms of BHG. Personally I would rebuild it, it will cost more than importing a 7m-gte but if you do it right in the long run it will last much longer and be able to support the mods you'll most likely put on.

[7MGTE_]

will a 5m or 6m crank work in my 7mgte

[projectsupramk3]

6M or 7M stamped only, differance is the 6M has less counterweights. The 6M crank was used until the first part of 1989, the 5M crank is a 2.8L. If he's selling you a 6m-ge engine don't waste your time, you'd be better off rebuilding what you have now.

[7MGTE_]

the engine that guy wants to sell me is in a recked supra turbo 7mgte engine so i going to try and buy it and covert it to a twin turbo.

what is the top speed,1/4,and 0-60 times for a stock supra turbo with the 7mgte

[projectsupramk3]

Why would you convert it to twin turbo? One turbocharger will do the same job just as good plus will cost less, have less parts to break, be less of a hassle to install, require less to fabricate, and so on and so forth.

[BobbyisKing]

hey 7mgte, i was in ur exact possition before
had my car for a few months, i think i ran over a puddle with a torn intercooler pipe and maybe got water inside engine or something. it started doing that rod knock thing. i decided to buy another motor and swap it in instead of just repairing it. It's all on what u want to do. One thing im wondering is what's with everyone always saying that they want to convert it into twin turbo? im guessing because it sound nice, how twin is having two turbos. One big one will be more than enough.

[7MGTE_]

how much did the new motor cost you.
i know were there is a supra for 1000 and a turbo for 1500
are the 6m pistions the same as the 7mgte

[BobbyisKing]

new used motor cost me 700 bucks, i had to drive down to LA to get it. another 450 for labor.

[7MGTE_]

i read some thing on this web site what is a jdm 7mgte engine
how much do they cost? does any body know were to get a cheap 7mgte crank and pistions

[projectsupramk3]

JDM = Japanese domestic market
USDM = United States domestic market
A JDM 7m is the exact same as a US version minus the EGR system, they go for $600-800 all day long. Why do you only want a crank and pistons by the way? I'm sure you didn't damage the pistons and the crank can be machined back into spec as long as it's not too bad, you should have a machine shop inspect it. 7M-GTE crank is the same as a 7M-GE crank just so you know, pistons are the difference. Only differances in the crankshafts were the 6m versions were used until 89, 7m versions were used until 92.

[7MGTE_]

i think me and a friend are going to pull the engine this weekend and go from there. i will let yall know some thing after this week end.
thanks for all the help and addvise.