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Old 11-01-2009, 10:50 PM   #1
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Default Rebuilding a supercharger

I finally got enough time in my life to start working on the extra supercharger I had sitting on the shelf.

Pressed out the shaft.
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Here'* the end of the snout where the outer bearing and oil seal sits. this is behind the pulley.
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Getting the inner bearing and coupler shaft off was a bit more of a task. But I finally won the fight.
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This is what the end of that shaft looks like.
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Pressed the new bearings on, and then pressed the shaft back in to the snout.
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This is the inlet on the case, where the throttle body attaches. The divot has been filled in and is opened up to a bit over 73mm, I plan to take this to 75mm and then polish it up.
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And here'* the outlet, all opened up and ready for a intercooler.
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I plan to have this done this week. If anyone is interested, I will be selling this when done. Watch the for sale section, it will be posted soon.
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Old 11-02-2009, 06:50 PM   #2
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Got some more work done. Finished the outlet.

Marked off the area I wanted to remove



Here she is, all ported out, I'm very happy with this.


Inside view.


Another view of the porting. Hbar removed as well. This can be used with, or without a intercooler.


Now on to the inlet. then it'* just clean it up and put it together.
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Old 11-02-2009, 08:02 PM   #3
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What do you think about beveling the inside lip of the outlet to coincide with the air push towards the LIM? I was thinking about using that strategy with the Gen V I'll be working on.
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Old 11-02-2009, 08:04 PM   #4
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I feel rounding the edge would be best to give a larger surface area to prevent any over heating.
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Old 11-02-2009, 08:06 PM   #5
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Next question...when does resizing the outlet get to be too much? Obviously volume is more important than pressure, but there has got to be a point where you can make the opening too large to be of value.
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Old 11-02-2009, 08:10 PM   #6
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When it'* larger then the throttle body. The LS1 throttle bodies are 73mm. The biggest I've seen anyone port out is 75mm to match a N* throttle body.
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Old 11-02-2009, 08:13 PM   #7
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ok so if i sent you an M90 how much to do that plus closing the silencers?
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Old 11-02-2009, 08:15 PM   #8
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Quote:
Originally Posted by Danthurs View Post
When it'* larger then the throttle body. The LS1 throttle bodies are 73mm. The biggest I've seen anyone port out is 75mm to match a N* throttle body.
My question was about the porting of the SC discharge into the LIM and not the TB. I'm sure the SC can handle intake beyond the 75mm, but it also needs pressure as well. When you open a discharge, the pressure drops. I know you can take too much material off the SC to make it more susceptible to heat warping or cracking, but I have yet to find any info on the maximum discharge size vs. benefit.
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Old 11-02-2009, 08:16 PM   #9
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Getting aluminum welded is a pain, and I don't get many chances to have it done. I'm sure I could figure something out. Unless your interested in this one. It'* going up for sale once done. Sending me another supercharger will drop the price of buying it.
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Old 11-02-2009, 08:19 PM   #10
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Ahh, my bad.

Where I took it to is what I felt was the biggest and safest. I like to keep the edges round, no sharp corners. And to not change the angles.
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