Question about 1989 Toyota Supra

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I would like to know if a non-turbo head can be used on a turbo engine? I have a l989 Toyota Supra Turbo

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  • frank_b598 Nov 30, 2008

    Why? Where does the compression ratio change? At the Piston or the deck height?

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No it cant be used sorry

Posted on Nov 30, 2008

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Head torque specification for l200 4d56 DID DOHC 2007


what car? and year>? and country , so we can look it up in our
great online sources. (all 3 must be known)
in the USA we use alldata.com (or the dealer FSM)

i guess you dont know that some heads are not torqued, or use TTY bolts, right? some are set by ANGLE degree.
that is covered in the FSM all that. the facts.
most head failures result from guessing.
or asking here, with no facts on car.
some engine run different heads, and different if turbo.

case in point, all this Mitsubishi engines

my guess
Mitsubishi Triton

Oct 24, 2014 | Cars & Trucks

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My 88 turbo supra at idle, the turbo is spooning. i had the engine bore of 20 over, and have tried everything i know to fix the problem. along with that the cold air intake is sucking air loudly like a...


if idle sound is an issue.... then put a bigger turbo on ur engine... smaller turbo means lesser weight which means that even at idle the back pressure will spin ur turbo blades.... if ur turbo is spooning at idle.. it's a good thing most guys aim at doing that... Dont worry...Be happy

Aug 28, 2010 | 1988 Toyota Supra

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1988 supra non turbo. overheats, pressure builds u...


Check fan clutch does it have silicon,or replace silicon

May 21, 2010 | 1988 Toyota Supra

1 Answer

Mk3 Supra Turbo Boost Gauge Problems


The gauge is working fine, the turbo will not kick in untill the engine is spinning fast enough, as the turbo is propelled by exaughst from the engine. So, you can drive around normal and never use the turbo, and climb in the gas and spool the turbo up, what you are noticing is called turbo lag, which is the biggest down fall when compaired to superchargers!

Feb 23, 2010 | Toyota Supra Cars & Trucks

1 Answer

Timing Dpecs for Toyota Supra 87 6 cylinder


1987 non-turbo: 10 deg Before Top Dead Center (BTDC) @700 rpm
1987 Turbo: 10 deg BTDC @650 rpm.

To set the timing, you will need to connect a jumper wire between terminals E1 and TE1 on the diagnostic terminal. This diagnostic terminal is located just aft of the engine compartment fuse box. It is a black plastic box marked "diagnostic" on the cover, which flips open to reveal the terminals inside. There is a diagram on the inside of the cover which explains the terminal positions. On the Turbo model, you need to remove the forward section of the engine cover to gain access to the number one spark plug wire.

Jul 25, 2009 | 1987 Toyota Supra

1 Answer

Engine compatible


Yes. However it is a very expensive swap $5000 to $8000 to do it right. You will need the 1J or 2J engine, transmission, wiring harness, ecu, and alot of other pieces to do the swap. The engine brackets will need to be modified and you will have to upgrade your brakes. This kind of swap requires a good knowledge of the Toyota Supra and the engines. I do not recommend this swap for a beginner. A cheaper way is to take a 7M-GTE and upgrade the internals and turbo.

Jul 09, 2009 | 1987 Toyota Supra

2 Answers

1989 Supra will not start, New battery. 5 Speed


starter isnt engaging, if you know where the starter is, tap on it with a hammer
1 person crank it over while the other person taps on it - its on the back of the engine

Jul 07, 2009 | 1988 Toyota Supra

2 Answers

Can I use a non turbo head on a turbo?


Yes the heads are interchangable. Best way to find out if stuff is interchangable is to go to Toyota dealer and compare part #'s

Nov 30, 2008 | 1989 Toyota Supra

1 Answer

Air flow meter


The turbo uses a completely different air flow meter than the non-turbo.

Nov 07, 2008 | 1991 Toyota Supra

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