Yo...I searched throught the Performance FAQ and saw that the author considered the following years part of these generations of the j:

3rd Generation: 1995-present
2nd Generation: 1988-1994
1st Generation: 1983-1987

Then I searched and found this post as to what size the Third Gen TB are based on motor size:

2.2L 52mm
2.4L 52mm
2.3L 56mm
Ecotec 2.2L 58mm

My question is this:

The author explaining the size of the TB says they are for the THIRD GEN motors was this a typo or what? ARE ALL 2.3 QUADS 56MM?

I wanna bore my stocker out to 56mm and get a butterfly from one of the previous years cause I can't find anyplace that will make a new one but I'm not sure which year Quads will yeild the correct size and the guy at the junk yard is hassling me about not wasting his time unless I know exactly what I want.

The following is an excerpt I found on the JBO and these are the cars I would be looking at:

1988-1995 Buick Skylark
1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Custom, Limited
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Custom, Gran Sport
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Custom, Gran Sport, Luxury Edition
1992 - 2.3L Quad 4 OHC (L40) 120HP Model: Base
1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: Custom, Limited
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Custom, Limited

1990-1994 Chevrolet Beretta
1990-1992 - 2.3L Quad 4 DOHC (LGO) 180hp Model: GTZ
1993 - 2.3L Quad 4 DOHC (LGO) 175hp Model: GTZ
1994 - 2.3L Quad 4 DOHC (LGO) 170HP Model: Z26

1995 Chevrolet Cavalier
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Z24

1992-1995 Oldsmobile Achieva
1992 - 2.3L Quad 4 OHC (L40) 120HP Model: S
1992 - 2.3L Quad 4 DOHC (LD2) 160HP Model: S, SL
1992 - 2.3L Quad 4 DOHC (LGO) 180HP Model: SC
1992 - 2.3L Quad 4 DOHC (W41) 190HP Model: SCX
*1993 - 2.3L Quad 4 DOHC (LD2) 155HP Model: S, SL
1993 - 2.3L Quad 4 DOHC (LGO) 175HP Model: SC
1993 - 2.3L Quad 4 DOHC (W41) 185HP Model: SCX
1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: S
1994 - 2.3L Quad 4 DOHC (LD2) 155HP Model: S, SC
1994 - 2.3L Quad 4 DOHC (LGO) 175HP Model: SC
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: S SERIES I & II

1988-1991 Oldsmobile Calais
1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: International, SL
1990-1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: International, S, SL
1989-1991 - 2.3L Quad 4 DOHC (LGO) 180hp Model: International, S, 442
1991 - 2.3L Quad 4 DOHC (W41) 190hp Model: 442 W41

1990-1991 Oldsmobile Cutlass Supreme
1990 - 2.3L Quad 4 DOHC (LGO) 180HP Model: International
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Base
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Base

1988-1995 Pontiac Grand AM
1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: SE, LE
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: SE, LE
1989-1990 - 2.3L Quad 4 DOHC (LGO) 180HP Model: SE
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE
1991 - 2.3L Quad 4 DOHC (LGO) 180HP Model: SE, LE
1992 - 2.3L Quad 4 DOHC (LGO) 180HP Model: GT
1992 - 2.3L Quad 4 OHC (L40) 120HP Model: SE
1992 - 2.3L Quad 4 DOHC (LD2) 160HP Model: SE, GT
1993 - 2.3L Quad 4 DOHC (LD2) 155HP Model: SE, GT
1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: SE
1993-1994 - 2.3L Quad 4 DOHC (LGO) 175HP Model: GT
1994 - 2.3L Quad 4 DOHC (LD2) 150HP Model: SE, GT
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: SE, GT

1990-1991 Pontiac Grand Prix
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE, SE

1995 Pontiac Sunfire
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: GT


So will any of these work?

thanX - updated sig coming soon!

rookiemasker wrote:The author explaining the size of the TB says they are for the THIRD GEN motors was this a typo or what?

No

rookiemasker wrote:I wanna bore my stocker out to 56mm and get a butterfly from one of the previous years cause I can't find anyplace that will make a new one but I'm not sure which year Quads will yeild the correct size and the guy at the junk yard is hassling me about not wasting his time unless I know exactly what I want.

Biggest waste of time and money. All Quad 4's (2.3L) have a 56mm TB. Just swap the whole 2.3L TB.


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"Youth in Asia"...I don't see anything wrong with that.

ThanX....I'll just ask him for the cheapest one. I've already got a second stocker so I wanted to bore it and use that one instead of making the 2.3 fit.

I forgot to mention that you will need the throttle bracket from a 95' J-body quad4. Or else, you can do like I did and just modify the throttle bracket that comes with the 2.3L throttle body to accomidate the longer throttle cable that your car has.


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"Youth in Asia"...I don't see anything wrong with that.

ok...went to the junk yard today (first time! lol) and got a tb from a 93 acheiva s series....$32

now i've just gotta get the thing bored to 56 yea i know just putting the 2.3 tb on as is would be cheaper but i don't want to....easier to just bolt up a modified stocker with no modification....but thanX for the help anyway B

um.....yea?

Brian Whalen wrote:I forgot to mention that you will need the throttle bracket from a 95' J-body quad4. Or else, you can do like I did and just modify the throttle bracket that comes with the 2.3L throttle body to accomidate the longer throttle cable that your car has.

I just reused my stock bracket with no hitches, and have functional Cruise.

this thread almost brings a tear to my eye.... somebody actually did some research on there own, they serached, they looked for info, then they posted for clarification, its like watching a child grow up


You sir have just restored my faith in JBO



and good luck with the TB