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Old 08-20-2008, 03:36 PM   #21
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Think of the counterbore as a pocket in which the comp wheel sits. For each comp wheel diameter (exducer), there exists a unique center housing with a matching pocket.

You could conceivably machine a center housing to accept a larger comp wheel, but not the other way around.

Best thing to do with that 2876 chra is to put a 30r turbine wheel in it and go for 400 whp.
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Old 08-20-2008, 03:40 PM   #22
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the wheel your curious about is only 60mm, yours is 71mm so there would be a 5.5mm gap around it if you stuck in on your CHRA.

I can simply swap out my backing plate or machine it out if need be.
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Old 08-20-2008, 03:57 PM   #23
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Yeah, it's only the small-frame bb stuff (35r and smaller) that has the counterbore integral in the center housing. Everything else has a separate backplate.
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Old 08-20-2008, 04:01 PM   #24
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JB weld the counter bore down to 61mm
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Old 08-20-2008, 05:19 PM   #25
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Quote:
Originally Posted by fmowry View Post
Jay,
The most useful thing Hustler has contributed to this forum is the kPa to PSI conversion chart in his sig.
Frank
Ummm, I think that conversion chart was completely wrong; at least the version I saw sure looked that way.

Quote:
Originally Posted by Braineack View Post
It's not like anyone with a brain can't figure 1psi = 7kPa, then add 100kPa.
Oooooooohhhh; that's why it looked fucked up to me....

Note to self; keep up and read all the way through the thread BEFORE posting.
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Old 08-20-2008, 05:48 PM   #26
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Quote:
Originally Posted by Braineack View Post
JB weld the counter bore down to 61mm
I think I'd rather find a dirt cheap turbo with the NS111 .64 hotside and compressor I want. so much easier. and lazier.
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