2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Supercharger - What to do with ports?

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Old Jul 28, 2004 | 08:14 PM
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Supercharger - What to do with ports?

how should I have the aux ports on the intake, open or closed, for the supercharger application?
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Old Jul 28, 2004 | 08:18 PM
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me personally I would try to leave them functioning, but I have not gotten that far into mine yet. Have maintenance issues to iron out first. But I would say try it with them working and see how it runs. I do not think that it would hinder it at all, but I could be wrong.
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Old Jul 28, 2004 | 08:41 PM
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That is not possible since I have removed the air pump
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Old Jul 28, 2004 | 09:01 PM
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so leave them open to catch more air
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Old Jul 28, 2004 | 09:06 PM
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What the hell is the point of saying you removed the air pump? You removed one and installed a bigger one. They work off of positive pressure, just run the SC pressure into them so that the SC opens them.
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Old Jul 28, 2004 | 09:08 PM
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I thought that was a good idea, so I asked it a while back and someone told me that it would mess the actuators up.
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Old Jul 28, 2004 | 09:16 PM
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wtf, if you removed the air pump, remove the actuators and sleeves all together. If youre goign to have a supercharger, then you dont REALLY need them.
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Old Jul 28, 2004 | 09:47 PM
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Just use a solenoid to activate them with a simple bleed, this will prevent them from locking when the solenoid closes, and from having 'excess' pressure buildup.
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Old Jul 28, 2004 | 10:16 PM
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Don't use the supercharger to open them, they only need like 3psi to open.
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Old Jul 28, 2004 | 10:40 PM
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There was a reason I said to include a bleed....
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Old Jul 28, 2004 | 11:16 PM
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I can't believe how many people are attempting supercharger swaps all of a sudden.
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Old Jul 28, 2004 | 11:37 PM
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ghey
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Old Jul 29, 2004 | 12:29 AM
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Someone sell me an M90 for a hundred bux like Dezerte did to some guy . . I need one, it'll go to a good home.
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Old Jul 29, 2004 | 12:50 AM
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Putting a roots on there would really help minimize the need for the 5/6 to open later on, as it would MORE then make up for the bottom end torque...

I made up for lack of bottom end torque a different way myself....
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Old Jul 29, 2004 | 12:57 AM
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You would want to leave them hooked up running off of pressure from the blower. When you are just cruising and the supercharger bypass valve is open, the ports stay closed. This helps you with fuel economy when off boost. It is so simple yet so incomprehensible.

Superchargers are only gay to those who don't like them. Most people on this forum are pretty closed minded followers though so it is to be expected. Go for it. It's your car. Do what makes you happy and screw everyone else. If he doesn't have a huge budget and doesn't want 400+ hp, there is absolutely nothing at all wrong with it.
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Old Jul 29, 2004 | 01:31 AM
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I'm still waiting for someone to weld a pulley to the hotside of a turbocharger and mount it on the car and turn it into a supercharger.
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Old Jul 29, 2004 | 02:54 AM
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for my supercharger application i wired the ports open, the more compressed air that can get in the better
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Old Jul 29, 2004 | 04:48 PM
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Originally Posted by SonicRaT
I'm still waiting for someone to weld a pulley to the hotside of a turbocharger and mount it on the car and turn it into a supercharger.
This has been done by gatorsuperchargers.net

Last edited by miketreid; Jul 29, 2004 at 04:51 PM.
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Old Jul 29, 2004 | 05:50 PM
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Originally Posted by SonicRaT
I'm still waiting for someone to weld a pulley to the hotside of a turbocharger and mount it on the car and turn it into a supercharger.
That'd just be a centrifugal supercharger. Unfortunately those have all the downsides of a turbo, with all the downsides of a supercharger...
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Old Jul 29, 2004 | 06:00 PM
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Yes, I know it's been done before, I was simply making a joke about the trend with forum members.
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Old Jul 29, 2004 | 06:25 PM
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I think there was a write up a while ago to put the 5th and 6th ports on a RPM switch instead of going from the air pump. why don't you use one of those setups to keep them closed so you keep the very bottom end and then open up when the supercharger start to needs that extra flowing ability. so you don't hurt performance with them in there and help your bottom end. never done it so just a thought
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Old Jul 29, 2004 | 06:35 PM
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space
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Old Aug 1, 2004 | 11:02 PM
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I hooked them up to the vac line and it works great to engage them when the supercharger goes into boost.
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Old Aug 1, 2004 | 11:06 PM
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tump

Last edited by DEZERTE; Aug 1, 2004 at 11:10 PM.
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Old Aug 1, 2004 | 11:08 PM
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Originally Posted by digitalsolo
I made up for lack of bottom end torque a different way myself....

How? or are you being silly?

M
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