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Discussion Starter · #1 ·
is their such thing? lol i was looking online and someone put a supercharger on a 7m



anyone on supra forums done this before? if so
what kind supercharger did you use?
was the power made from a supercharger better then turbo?
also was it cheaper horsepower from a supercharger or a turbo...
 

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its been done before im sure, but why would you want to...
 

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This thread pops up a couple times a year with the same picture. No one on SF has ever done this to my knowledge but it has probably been done. There is no kit, it's a completely custom deal and will take a lot of fabrication skills.
 

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its been done there was actually a video on here a while ago of someone who twin charged their 7m.
Bullshit asshole! No one likes the supercharger in here!

It would be cheaper and more effective to go turbo. You'll pretty much be striking out on your own path with the S/C. I'd look around summit racing. You'll be looking for a side mount S/C even though you won't find one that is a direct fit.
 

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Bullshit asshole! No one likes the supercharger in here!

It would be cheaper and more effective to go turbo. You'll pretty much be striking out on your own path with the S/C. I'd look around summit racing. You'll be looking for a side mount S/C even though you won't find one that is a direct fit.
hahaha dont worry im with you i woudnt supercharge my supra, however: http://www.youtube.com/watch?v=0HyhUusmQlQ&fmt=18
 

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This thread pops up a couple times a year with the same picture. No one on SF has ever done this to my knowledge but it has probably been done. There is no kit, it's a completely custom deal and will take a lot of fabrication skills.
You got that right !
It's my supercharger,
and I can't even start to list the time & money I have in it.

It is complete, but............

I have learned the stupidity of using an un-dampened front crank pulley on an inline-6.
This drive was built off an unorthodox crank pulley.
I now have to machine an adaptor to fit the drive to an ATI ballancer.

I have thought of selling it, but I never quit a project,
no matter how many years it takes.

Here is a little info on it from an old supramania thread:

7M-fanatic04-01-2007, 09:08 PM
OK, for all the doubters.........
The pictures of the blown 7M and the twin-charged 7M are mine.
It is the same engine.
The reason the pictures of the supercharger version look funky, is that they were taken with a 35mm camera, and scanned.

The engine was 100% ready to install, and would have been several years ago, except no one could remember where the tranny cross mount went.
With my work load, it was 6 months before I found a replacement.
Then, I found the rare GReddy underhung turbo manifold & the TD08 'Rabid Dog' Mitsubishi turbo (the TD07 was called the 'Mad Dog').

Since then, I have upgraded to a GReddy T88-34D, which will put out enough boost to:
Exceed the 440cc injectors originally installed, and
Exceed the strength of the OEM turbo pistons & rods.

So at this point, the engine is down again.

Along the way, I have picked up a Group-A head, 272 cams, Cosworth pistons, and Eagle rods.

The engine will go back together as a twincharged set-up again.

The blower is an Eaton M90.
The blower snout is right from Magnuson (US distributor of Eaton), and cost me as much as I paid for the used blower ($400).
The manifold was fabbed from a piece of 4" square, .25" wall aluminum tube, welded onto the lower 7M intake manifold that was shortened (if memory serves) to 5.5" long.
There is a full length water to air intercooler inside the manifold.
As you can see in the side shot that someone else posted, yes, it does have an alternator.......
It will fit into my Cressida with about 3/4" per side clearance.
It retains the AC.
The crank drive is made from an Unorthodox crank pulley,
the was machined to accept a hub, that an off-the-shelf (from a manufacture of Kart parts makes) 8mm pitch pulley bolts to.
They make them in 5 tooth increments, and the blower drive ratios will allow me to go from 7 psi to 15 psi depending on which one I use.

Limitations:
Eaton does not want the blower to spin faster than 14,000 rpm, and not to exceed about 14 psi.
Although I have found old charts that show that it will take 15,000 rpm/15 psi.
Must have something to do with life expectancy for production vehicles......
Efficiency starts to go south at about 70% of these figures.

This is where the turbo comes into play....
The T88 will not start building good boost on a 7M until 5000+, about where the Eaton starts getting short winded.
When the turbo comes on-line, the blower will just be along for the ride.

If anyone wants more pictures, or has questions, they can e-mail me directly at [email protected]

Sorry, I do not get time away from my eRip auction duties to surf through all the 7m/Supra/Cressida forums, or I would have cleared up some of these mysteries before.

Regaurds,
Gordon Duax
San Antonio, Texas
eBay ID mx83*gx81


 
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