Did some Supercharger outlet porting today - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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

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Old 09-22-2005, 01:35 PM   #31
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Will, did you increase the actual size of the outlet? Or did you just smooth out those sharp corners?
Did you notice any sound difference now that you have your car back together? Ported blower usually = louder whine.
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Old 09-22-2005, 01:40 PM   #32
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TA, I was very clearly and specifically warned by Eaton and Magnusson not to increse the size of the port, so I just cleaned up the casting edges, then chamfered and blended all the 90 corners to rounded 45 corners. Just to smooth out the outlet air path and cut down on heat on those exposed edges. I didn't touch the two 'tuning' outlets for noise. That'* the sole purpose of those buggers. No additional whine (thank god, it'* bad enough now).

What I did was slightly increase the Eaton'* ability to get the air into the LIM, and put it in there at a slightly lower temp. This was done primarily to back up the ported TB and LIM ports.
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Old 09-22-2005, 01:55 PM   #33
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Oh ok, I didn't think you increased the actual outlet size any, but I figured I'd ask anyway. All this inability to modify things I want on this car is getting to me. No */c porting, no intercooling. I'm about the gut the */c and procharge it instead.
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Old 09-22-2005, 02:02 PM   #34
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Intercooler is coming.
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Old 09-22-2005, 02:10 PM   #35
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Do you have a timeframe when it will be out yet?
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Old 09-22-2005, 03:43 PM   #36
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When I have time to finish it. It won't be available for purchase, but the CNC Cad files will be readily available, as well as detailed instructions for the plate, heat exchanger, pump (yes, a pump), alternator bracket adapter and fuel rail modifications. Should be ready by spring.
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Old 09-24-2005, 01:39 AM   #37
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Wow, Bill I'm gonna have to bring my Firebird to the next Meet to try and keep up to you.
....come to think of it... ...my Bonne is faster than my Firebird.

You are very ambitious with your mods this season. Guess you really lust after that trophy
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Old 01-20-2006, 04:39 PM   #38
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FYI, about half the features I cleaned up and ported on my 93 SC are already existing in the casting for the 95 SC I'm rebuilding. I only had to do about half the work as before. It appears that Eaton realized the problems with sharp edges and 90 turns, and fixed some of the issues.
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