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

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Old 06-23-2005, 04:07 PM   #1
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Default quick question

how big is a stock pulley?
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Old 06-23-2005, 04:18 PM   #2
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Quick answer: on what?

Please put your year car and trim level in your signature. We would assume if you are asking about a pulley you are talking supercharged.

On a side note...the pulley size on the tricycle raced in MN last weekend was a sweet 2.56, which gave Nate the advantage on the hole shot.
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Old 06-23-2005, 05:14 PM   #3
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92/3 is 2.5"
94/5 2.8 or so i believe
96-current = 3.8.
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Old 06-23-2005, 05:21 PM   #4
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WOW, those pulley sizes went up over the years. Was this to cut down on KR or for some other reason?
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Old 06-23-2005, 05:26 PM   #5
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No, it was because of different superchargers. The 92-93 had an M62, the 94-95 had a later gen M62, and the 96-present has an M90.
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Old 06-23-2005, 06:07 PM   #6
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Also, when a blower has a greater efficiency, it needs less rpms to make the same boost. I think the 94/95 had a larger inlet and teflon coated rotors which improved it from 92/93? But yeah like Sol said the 96+ is different all together.
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Old 06-23-2005, 06:24 PM   #7
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uh huh...like always Ive been educated. Thanks guys
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Old 06-24-2005, 04:55 AM   #8
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Quote:
Originally Posted by 95naSTA
Also, when a blower has a greater efficiency, it needs less rpms to make the same boost. I think the 94/95 had a larger inlet and teflon coated rotors which improved it from 92/93? But yeah like Sol said the 96+ is different all together.
Actually not teflon. They're epoxy coated. But otherwise dead on.
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Old 06-24-2005, 08:49 AM   #9
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Quote:
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Quote:
Originally Posted by 95naSTA
Also, when a blower has a greater efficiency, it needs less rpms to make the same boost. I think the 94/95 had a larger inlet and teflon coated rotors which improved it from 92/93? But yeah like Sol said the 96+ is different all together.
Actually not teflon. They're epoxy coated. But otherwise dead on.
Hmmm I thought you said before they were teflon
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Old 06-24-2005, 01:13 PM   #10
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I thought they were, as did everyone else. i know better now. Teflon would be a waste, as they never touch. It'* an epoxy coat to seal the aluminum, and decrease the clearance between the rotors for higher efficiency.
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