supercharger problem
supercharger problem
I believe the supercharger in my 94 SSEi is ready to die. All of a sudden started to make loud bearing noises at idle. Trying to get in to my mechanic to have him check it out. I've seen rebuilt units for $450 with core online. Any idea about cost of installation?? Car has 64k miles.
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J Wikoff
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- Year and Trim: 1992 SSE
2009 G8 GT - Location: Central Illinois
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Re: supercharger problem
The superchargers are pretty easy to replace, really. They are right on top, and there isn't much that has to come off first. A few hours, at whatever the shop's rate is.
A few thoughts:
The bearings in the nose drive are replaceable and parts would be in the $50 range (it's been a while.. might be more, not sure). It would probably add a few hours to the shop time. I believe rebuilt nose drives are available, and one for 92 to 95 would fit. Added part cost but would reduce the shop time quite a bit.
The bearings in the rotor plate are not readily replaceable without a jig to control the alignment of the rotors. They are rarely an issue though. SC replacement would be a better option.
If replacing the supercharger (M62 Gen 3), you'd need one specific to a 94 or 95 year. The 92/93 supercharger (M62 Gen 2) has a smaller inlet size, the EGR port is smaller, and the rotors are not epoxy coated.
Also note that a lot of SC rebuilders will strip the epoxy off the rotors while cleaning them and tell you it makes no difference. That is NOT TRUE. Rotors stripped of their coating will produce less boost. Look for one with intact rotor coatings.
If you can remove the belt, you can do an easy test on the supercharger yourself. Grab the pulley and check for any play or rotational slop. Rotational slop would mean a new coupler is needed. It's like a $20 part. Any up/down/side play in the shaft would mean the bearings in the nose drive are shot.
A few thoughts:
The bearings in the nose drive are replaceable and parts would be in the $50 range (it's been a while.. might be more, not sure). It would probably add a few hours to the shop time. I believe rebuilt nose drives are available, and one for 92 to 95 would fit. Added part cost but would reduce the shop time quite a bit.
The bearings in the rotor plate are not readily replaceable without a jig to control the alignment of the rotors. They are rarely an issue though. SC replacement would be a better option.
If replacing the supercharger (M62 Gen 3), you'd need one specific to a 94 or 95 year. The 92/93 supercharger (M62 Gen 2) has a smaller inlet size, the EGR port is smaller, and the rotors are not epoxy coated.
Also note that a lot of SC rebuilders will strip the epoxy off the rotors while cleaning them and tell you it makes no difference. That is NOT TRUE. Rotors stripped of their coating will produce less boost. Look for one with intact rotor coatings.
If you can remove the belt, you can do an easy test on the supercharger yourself. Grab the pulley and check for any play or rotational slop. Rotational slop would mean a new coupler is needed. It's like a $20 part. Any up/down/side play in the shaft would mean the bearings in the nose drive are shot.
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
Re: supercharger problem
Thank you very much for your very informational reply!!!!
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J Wikoff
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- Year and Trim: 1992 SSE
2009 G8 GT - Location: Central Illinois
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Re: supercharger problem
No problem! It's been a while since anyone really talked about them here, but there was a while there where I lived and breathed these things.
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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MKMike
- Posts like an L67
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- Year and Trim: 1993 SLE
1998 SE
2001 SSEI
2002 SSEI
Re: supercharger problem
Very informative post!J Wikoff wrote: Also note that a lot of SC rebuilders will strip the epoxy off the rotors while cleaning them and tell you it makes no difference. That is NOT TRUE. Rotors stripped of their coating will produce less boost. Look for one with intact rotor coatings.
Can you tell me why the stripped rotors produce less boost?
Not doubting: just seeking knowledge.
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desertpierat
- SLE Member
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- Year and Trim: 2000 Bonneville SSEi
- Location: Westfield, IN
Re: supercharger problem
I believe its because there's more room for air to escape between the rotors when the coating is removed, I could be way off though.
2000 Pontiac Bonneville SSEi
2010 GMC Acadia SLT2 (wife's car)
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J Wikoff
- Administrator
- Posts: 17080
- Joined: Mon May 19, 2008 7:01 pm
- Year and Trim: 1992 SSE
2009 G8 GT - Location: Central Illinois
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Re: supercharger problem
That's right.desertpierat wrote:I believe its because there's more room for air to escape between the rotors when the coating is removed, I could be way off though.
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