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Old 12-05-2005, 10:53 AM   #1
gln_mllr
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supercharger

i have a 99 gtp with 100,000 miles. i just put a rebuilt supercharger on but it will give no boost when i give it the gas on take off. at higher rpms i can hear the supercharger running but the gage only shows about half boost. i would appreciate any help or suggestions on what might be or is wrong.
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Old 12-05-2005, 12:42 PM   #2
BNaylor
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Re: supercharger

Quote:
Originally Posted by gln_mllr
i have a 99 gtp with 100,000 miles. i just put a rebuilt supercharger on but it will give no boost when i give it the gas on take off. at higher rpms i can hear the supercharger running but the gage only shows about half boost. i would appreciate any help or suggestions on what might be or is wrong.
Are you sure the boost bypass vacuum lines are on correctly. Plus are you using an undersize SC pulley or the stock 3.8?
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8
'08 Pontiac Grand Prix GXP (Liquid Silver Metallic) - LS4 5.3L V8
'02 Oldsmobile Alero GL2 - LA1 3400 V6
'99 Buick Regal LS - L36 Series II 3800 V6
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'97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged
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Old 12-05-2005, 05:07 PM   #3
gln_mllr
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Re: Re: supercharger

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Originally Posted by bnaylor3400
Are you sure the boost bypass vacuum lines are on correctly. Plus are you using an undersize SC pulley or the stock 3.8?
ill check them out. thanks!
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Old 12-05-2005, 05:39 PM   #4
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Re: Re: Re: supercharger

Quote:
Originally Posted by gln_mllr
ill check them out. thanks!
You're welcome. Here's a vacuum diagram for an L67 just in case.


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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8
'08 Pontiac Grand Prix GXP (Liquid Silver Metallic) - LS4 5.3L V8
'02 Oldsmobile Alero GL2 - LA1 3400 V6
'99 Buick Regal LS - L36 Series II 3800 V6
'03 Honda CR250R MX - 2 Stroke 250cc
'97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged
Timeslip 08/12/06

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Old 12-05-2005, 06:00 PM   #5
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Re: Re: Re: Re: supercharger

What do you know, you can draw



Quote:
Originally Posted by bnaylor3400
You're welcome. Here's a vacuum diagram for an L67 just in case.


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Old 12-06-2005, 11:00 AM   #6
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Re: Re: Re: Re: Re: supercharger

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Originally Posted by kustomkid54
What do you know, you can draw
Not really Jim...lol. Just know how to copy, cut and paste.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8
'08 Pontiac Grand Prix GXP (Liquid Silver Metallic) - LS4 5.3L V8
'02 Oldsmobile Alero GL2 - LA1 3400 V6
'99 Buick Regal LS - L36 Series II 3800 V6
'03 Honda CR250R MX - 2 Stroke 250cc
'97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged
Timeslip 08/12/06

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