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

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Old 02-26-2007, 02:09 AM   #11
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I am gunna pull the belt off the supercharger in the next couple days and spin it over by hand, see if I notice anything. I have a feeling I may end up taking it off and looking it over, but I can't have the car down for more than a day since its my wife'* car she drives every day.

But as far as I can tell, the supercharger makes no bad noises at all, being it has over 180K it runs really nice and you can't even hear it run.
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Old 02-26-2007, 07:45 AM   #12
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Originally Posted by boysatt
I am gunna pull the belt off the supercharger in the next couple days and spin it over by hand, see if I notice anything. I have a feeling I may end up taking it off and looking it over, but I can't have the car down for more than a day since its my wife'* car she drives every day.

But as far as I can tell, the supercharger makes no bad noises at all, being it has over 180K it runs really nice and you can't even hear it run.
There'* no need to pull the belt at this point. The supercharger is spinning w/o noise, let'* move on to another area that can help.

You mention that the bypass is opening and closing. That'* a good sign. So is the not getting past 0, it must close the bypass to reach 0.

Does the car sound like it has an exhaust restriction? Rattling underneath about midway down the car?
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Old 02-26-2007, 09:09 AM   #13
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The pins of the coupler overlap. The SC will still produce full boost without a coupler, so like the other Bill said, it'* time to move on.

I'd like to see the poster spray carb cleaner on each vacuum line and fitting at idle to search for a vacuum leak, then do the boost control solenoid bypass trick to verify it'* operation. Only for troubleshooting though.
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Old 02-26-2007, 11:58 AM   #14
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Is it at all possible a previous owner removed the SC rotors?
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Old 02-26-2007, 12:13 PM   #15
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Is it at all possible a previous owner removed the SC rotors?
Can't do that and retain the belt path. You would have to remove the rotor plate and that'* .5-.75 of an inch.
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Old 02-26-2007, 12:21 PM   #16
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Not with the right tools. Just pull them out of the rotor plate.
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Old 02-26-2007, 12:25 PM   #17
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He wouldn't be getting to atmospheric without rotors. He'd still be deep in the vacuum range.

Please try the things posted 5 and 6 replies up and get back to us.
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Old 02-26-2007, 12:27 PM   #18
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I had the impression NA cars got to "0" at WOT.
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Old 02-26-2007, 12:49 PM   #19
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Without vacuum the air wouldn't be pulled into the cylinder. Boost at 0 psi still pushes it in.
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Old 02-26-2007, 12:52 PM   #20
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We need to get this back on track. Please respond to the advice above (copied here):

There'* no need to pull the belt at this point. The supercharger is spinning w/o noise, let'* move on to another area that can help.

You mention that the bypass is opening and closing. That'* a good sign. So is the not getting past 0, it must close the bypass to reach 0.

Does the car sound like it has an exhaust restriction? Rattling underneath about midway down the car?
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The pins of the coupler overlap. The SC will still produce full boost without a coupler, so like the other Bill said, it'* time to move on.

I'd like to see the poster spray carb cleaner on each vacuum line and fitting at idle to search for a vacuum leak, then do the boost control solenoid bypass trick to verify it'* operation. Only for troubleshooting though.
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