[Supras] 7MGTE in mk1 supra?

[d russell]

Dan Gyoba <dgyoba at abstractconsulting.com> wrote: On 5 May 2006 at 15:13, Jon Prine wrote:

> Considering buying a 79 supra..   I know mk2's fit the 7M with little
> problems but what about a 79?  Custom engine mounts, drive shaft etc
> are not big problems, as long as the engine will fit in the bay
> without cutting anything up or using a hammer.   I would also plan on
> using the R154 tranny.  Would it fit? how about shifter lining up in
> stockish location?

1.Engine mounts shouldn't be a problem, since the 4M-E is the same block, after all.  The 
oil pan will be different, but you may be able to get away with using the 4M oil pan, and 
just altering the oil pickup.
(simply swap pickups as you would in a mk2)

2.The transmission will be more problematic.  
You WILL need to fabricate a custom mount for 
the transmission.  Since both the R154 and W58 are the same distance from the rear engine 
mount to the shifter location, it *should* fit, as I believe that the Mk1 also used the 
W58, though I could be wrong there.
(mk1 came with w50, not w58. R154 will not fit. You can use a mk2 w58 mount, not custom work necessary at all it is not problematic it is a piece of cake)

You may need to relocate some of the stuff under the hood, there may not be room for the 
coil packs under the hood of the Mk1 in the stock location.  These could be relocated, as 
several members have done so.
(coil pack remains in stock location. As far as under relocation, the same rules apply here as apply in a mk2)

There should also be room for the turbo, but the last time I looked under the hood of a 
Mk1, I seem to recall there being some larger plumbing in there for the heat/AC system.  
This may require some attention.
(turbo fits. Use bolts on the turbo not studs. Turbo cnnot be removed easily once in the car. ac lines are there. Simply remove fastners that hold them to the sheetmetal.)

Wiring *will* be difficult, since the Mk1's chassis electrical is even more different than 
the Mk2's system.  Some of the work will be similar, but some will take some new 
creativity.
(seen them wired up b4. Been done, not much diff than mk2 at all.
If you can do any other swap you can do this one)

As far as speedo goes, you'll have to figure that out once it's all together.  You'll 
probably have to use much of the Mk3 instrumentation, as the tach is likely to be 
different enough as to be inconvertable.  Also many of the other engine instruments will 
be too different to convert.
(tach conversion is similar to mk2 or use an msd tach convertor. speedocable is bolt up no problem there. run w58 as they ar lighter and usually found  in better cond althogh not as tough as the w50 the shifter hole is not a problem as lin as the w58 is from a supra)

If you go ahead with it, good luck!

Dan Gyoba
'89 NA 431,537 kms, 
http://www.abstractconsulting.com/~dan


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