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Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

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Old 11-30-2006, 05:42 PM   #41
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I have both at home. A couple of each actually.

I guess I'm doing a test-fit?
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Old 11-30-2006, 06:17 PM   #42
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And measure the inner diameter of the rotor housings.
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Old 11-30-2006, 06:18 PM   #43
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Make me.
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Old 11-30-2006, 07:19 PM   #44
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...where'* that button...
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Old 11-30-2006, 07:21 PM   #45
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Quote:
Originally Posted by J Wikoff
...where'* that button...

the squeeky toy??

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Old 11-30-2006, 10:20 PM   #46
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From my very careful measurements, there'* a consistent .005" difference between them. Enough that I'm not willing to sacrifice binding them up for a test fit. The 94/95 Gen3 rotors would fit rather tight (possibly over-tight) in a Gen2 case. Not only that, but I never noticed the bottom of the compressor housing is a different profile between them. The Gen2 is flat across the bottom, while the Gen3 is contoured for the rotors.

It doesn't matter, as the efficiency of the Gen3 rotors would outflow the inlet of the Gen2 housing so badly, you'd cause heat problems at any boost level. And the inlet of the Gen2 housing won't be able to flow enough for the demand of the rotors. You'd need a pulley larger than 2.8" to compensate. You'd also have heat problems in the inlet at any boost level. Not to mention that with the lack of 'side fins', the Gen3 housing is much stronger and thicker.

Keep in mind we had a former member that swapped a Gen3 onto his 92 (same as a 93) but used the original TB. He never got the car running right.
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Old 12-01-2006, 04:38 PM   #47
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Quote:
Originally Posted by willwren
From my very careful measurements, there'* a consistent .005" difference between them. Enough that I'm not willing to sacrifice binding them up for a test fit. The 94/95 Gen3 rotors would fit rather tight (possibly over-tight) in a Gen2 case. Not only that, but I never noticed the bottom of the compressor housing is a different profile between them. The Gen2 is flat across the bottom, while the Gen3 is contoured for the rotors.

It doesn't matter, as the efficiency of the Gen3 rotors would outflow the inlet of the Gen2 housing so badly, you'd cause heat problems at any boost level. And the inlet of the Gen2 housing won't be able to flow enough for the demand of the rotors. You'd need a pulley larger than 2.8" to compensate. You'd also have heat problems in the inlet at any boost level. Not to mention that with the lack of 'side fins', the Gen3 housing is much stronger and thicker.

Keep in mind we had a former member that swapped a Gen3 onto his 92 (same as a 93) but used the original TB. He never got the car running right.
Thank you So much Will this is great information, specially if someone were to just do a swap and think nothing of it and end up in a situation. So if someone were to switch from a 92/93 to a 94/95. They would need to get a new PCM for a 94/95, LIM, fuel regulator and TB am I correct so far. In which the Dealership did for me which cost me alot and paid dearly for. I just want to thank you for the trouble in finding out differences between the 2 models. Hats off to the BonnevilleClub!
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Old 12-01-2006, 04:47 PM   #48
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Bigbad, according to what I'm reading from you, the dealer didn't do any swap of any kind, other than the proper Gen2 92/93 setup that you should have.
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Old 12-01-2006, 05:08 PM   #49
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Quote:
Originally Posted by BillBoost37
Quote:
Originally Posted by bigbadbonneville
The one that has the long finned caseing is in my car and the one that I have sitting on my shelves next to my tool box looks like the caseing goes half way, which the dealership gave back to me.
If this statement is correct, the casing with fins all the way down (92/93) is on your car, and the (94/95) casing with fins only partway is on your shelf.

This means your car has the 92/93 supercharger and throttle body on it. Which would allow it to run and function properly with the current PCM.

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Originally Posted by willwren
Now the cooling fins. Notice how the Gen2 (92/93) fins on the LEFT supercharger extend all the way to the base? And the Gen3 (94/95) go only partway down:
I still think this is backwards, the 92/93 have the fins that come halfway down and the long fins are the ones that go on 94/95.
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Old 12-01-2006, 05:27 PM   #50
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Ok.. BigBad...I'm going off the deep end here.

YOU HAVE A 92/93 SUPERCHARGER. PLEASE READ WHAT WE HAVE WRITTEN, IT IS APPARENT THAT YOU HAVE NOT READ ANY OF THE LAST 8 POSTS


The dealer charged you to swap the 92/93 parts onto the top of the 95 motor.

Honestly..I am unsure how we can be any clearer.
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