removing sc and adding a turbo what needs to be done? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-11-2007, 05:42 PM   #1
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Default removing sc and adding a turbo what needs to be done?

would i benifit from removing my supercharger and installing a turbo. what would i have to do to bypass the bca and bcs. i know what to do for exhaust and belt. and how to make the intake. just the electronics is what i need help with
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Old 09-11-2007, 05:48 PM   #2
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What exactly do you want to accomplish, performance wise? I was researching a turbo setup a while back, and people told me to stick with the SC... Besides, do you really wanna loose that low end tq?

Oh, and I see you're a '95. Keep in mind that there are no kits (or at least that I know of) for the series one; you'll have to fab it yourself
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Old 09-11-2007, 05:59 PM   #3
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Machine a blank-off plate for the SC, and a new idler for the belt. Or remove the rotors from the intermediate rotor plate, block off the holes, and keep the nosedrive spinning free as an idler.

The BCA can be simply 'tricked' not to actuate.

You use the empty SC housing as an UIM.
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Old 09-11-2007, 06:02 PM   #4
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yeah i know i will have to fab. its a daily driver..
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Old 09-11-2007, 06:05 PM   #5
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will would it be better to add a turbo
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Old 09-11-2007, 06:11 PM   #6
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Quote:
Originally Posted by 95riviera
will would it be better to add a turbo
completely depends what you want out of your car. Some people prefer turbos while others prefer superchargers.
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Old 09-11-2007, 06:16 PM   #7
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i like the sc i just want more power. the 2.55 pulley isnt enough for me. i got the 2.3" pulley i just dont know parts to add and where to get them to run the 2.3 to get the 12psi i should get with it.
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Old 09-11-2007, 06:17 PM   #8
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Pretty much it is -

Do you want the low end snap when you floor it from a stop? (SC)

Or do you want to floor it and wait for the turbo to spool up? (Turbo)

Also remember, fabricating a turbo setup from scratch can become fairly costly in a matter of time. Do you want to intercool it? If so, add in for a intercooler, piping, front end modification to fit a intercooler in. Also take note that you will have to get a custom burned PCM, as the PCM currently in it will get confused at the setup.

Also, you will need to factor in the cost of a stronger tranny, or the turbo will eat it right up. In laymen'* terms, stick with what you have and work with it. Running away from your current problem and trying to solve it with another solution will not help.
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Old 09-11-2007, 06:21 PM   #9
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Quote:
Originally Posted by 95riviera
i like the sc i just want more power. the 2.55 pulley isnt enough for me. i got the 2.3" pulley i just dont know parts to add and where to get them to run the 2.3 to get the 12psi i should get with it.
This is where you have it wrong. Boost PSI has nothing to do with performance, except tell you what you're NOT flowing and using effectively.

Don't even THINK about a 2.3" pulley without ported heads on your car. You'll go BOOM in very short order.

A 2.3" pulley would probably net you LESS power anyway.
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Old 09-11-2007, 06:45 PM   #10
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also are you scanning for KR
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