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1500HP Build: which TB?

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Old Jan 30, 2011 | 08:42 PM
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Default 1500HP Build: which TB?
Will be running a Vic intake. Should I go with the fast 92 or 102mm TB?
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Old Jan 30, 2011 | 08:53 PM
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What's the diameter of your cold side?
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Old Jan 30, 2011 | 09:11 PM
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Have not made it yet. 3"?
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Old Jan 30, 2011 | 09:24 PM
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Originally Posted by dreamls1
Will be running a Vic intake. Should I go with the fast 92 or 102mm TB?
I use a 105mm on my motor, probably wont make a big difference but I would go with a 102mm TB. Get a spacer and have someone work the plenum to equalize the airflow distribution, cut corners now and you could be buying pistons. Off the top of my head you probably want to use 3.5" tubing.
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Old Jan 30, 2011 | 09:30 PM
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Thanks Phil, you think 4" is to much?
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Old Jan 30, 2011 | 09:34 PM
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Originally Posted by dreamls1
Thanks Phil, you think 4" is to much?
4" is just going to slow down the velocity, not really needed at 1500hp.
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Old Jan 30, 2011 | 09:45 PM
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102mm it is
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Old Jan 31, 2011 | 04:52 AM
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I ran a 90 with no issue...
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Old Jan 31, 2011 | 10:33 AM
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We run a 4" pipe from the IC to a 90mm TB (which is 4") on LS2Formula's car. No lag issues.
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Old Jan 31, 2011 | 10:57 AM
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Originally Posted by 98Z28CobraKiller
We run a 4" pipe from the IC to a 90mm TB (which is 4") on LS2Formula's car. No lag issues.
the OD of the TB is 4" but 90mm = 3.5" ID (at the blade)
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Old Jan 31, 2011 | 12:56 PM
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I'm running a 92mm TB with 3.5" plumbing.
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Old Jan 31, 2011 | 10:13 PM
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humm, would it be ok to go with the 102mm and the 3.5 or stay with the 92mm
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