1994 Bonneville a/c bypass without bypass pulley

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kennyramjam
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1994 Bonneville a/c bypass without bypass pulley

Post by kennyramjam »

Hi. I'm new to the forum and have logged on with a question about my Mom's 1994 Bonneville. She wants to bypass the ac
compressor and has been told the only way to do this is by using a bypass pulley. This requires removing the compressor
which is a job deleggated to her son (ME), but as I look at the way the serpentine belt wraps around the various pulleys,
I wonder if it would work just as well (and be easier) just to use a shorter belt and not deal with any :roll: pulley at all. Any
reason this can't be done. What size is the belt, if it can. 1994 Bonneville 4 door sedan 3.8L. THANKS
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J Wikoff
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by J Wikoff »

You can do it with a shorter belt. I've done it, but I can't remember how long the belt is... take a string and follow the belt (installed, so the tensioner is where it will be).
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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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willwren
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by willwren »

Remember his belt path is different than yours, John.
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by J Wikoff »

I did it on my wife's old 93 SE, same as a 94.
Image
WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by willwren »

Oops. I forgot about that one!
Image
Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
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kennyramjam
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by kennyramjam »

Thanks for the info. My only concern is that the water pump will not have the belt
wrapped around it as far, though it looks like it would be far enough. Anyone
using a shorter belt have any trouble with the water pump slipping? If I could
use a shorter belt instead of having to take off the compressor to install an
idler it SURE would be easier. As long as it actually works! I'm becoming
cautiously optimistic. More input, if you can.
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by J Wikoff »

My wife's car didn't have any temp issues with the reduced belt wrap.
Image
WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by Jrs3800 »

IIRC this will be a 73" belt, only problem is that the belt rides super close to the Torque Axis Mount Bracket
kennyramjam
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by kennyramjam »

Once again, thanks, guys. Looks like I've come to the right place. By the way, what is the meaning of IIRC? I'm guessing "If
I recall correctly". Anyone else out there have good luck with 73"? I guess, at this point, I could just buy one, and see how
it works...I shouldn't have to even run the car to see if it fits. I don't mind if it runs close to a bracket, as long as it can't
touch it. If I don't actually run the car to check it out, I should be able to take it back if it doesn't look like it will work.
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J Wikoff
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by J Wikoff »

You got IIRC right.

It is 70-something. Search posts by me with "belt". I've probably answered the same question sometime before I forgot what I used.
Image
WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
scottsu150
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by scottsu150 »

I just did this on my 94, For anyone else who wants to do it the belt was a NAPA 25-060725 which is 73 1/4 inches long.
mhobryan
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Re: 1994 Bonneville a/c bypass without bypass pulley

Post by mhobryan »

Have a 95 with a series II engine ... will the 73 inch measurement work also, or does the series II have a different belt path?
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