which turbo?

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Sep 26, 2009 | 10:26 PM

ssnovaturbo

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which turbo?

Hey guys, building a turbo 402 and looking at two different turbos,
an S88 or GT4788. Anybody got any input as to which one is better/ more preferred?

Sep 26, 2009 | 11:32 PM

njc.corp

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pt88 or pt91 for that sized engine

Sep 27, 2009 | 08:44 PM

ssnovaturbo

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I thought against the pt88 because of the t4 flange being restrictive. Is the pt91 also a t4? Or can you order either with a t6 flange?

Sep 27, 2009 | 10:36 PM

ScorpionT

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A PT88 will spool slower than a GT4788 and make less power, and less than an S88 also. PT91 isnt a bad turbo, but he doesnt need a thumper to make his power goals on a 402.

Sep 28, 2009 | 03:47 PM

ssnovaturbo

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How much of a price difference is there between the gt and the s88? Reliability wise either one? ScorpoinT thanks for the help so far. Just trying to find out which one to order and who through. What about BOV and WG?

Sep 28, 2009 | 04:22 PM

bad6as

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i talked to dr turbo and he said a pt88 for my goals. im pretty sure he said it was a t6

Sep 28, 2009 | 05:20 PM

98Z28CobraKiller

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Quote:

Originally Posted by bad6as

i talked to dr turbo and he said a pt88 for my goals. im pretty sure he said it was a t6

I thought that all pt88's were .96 A/R t4's. Mine is.

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Sep 29, 2009 | 03:50 PM

bad6as

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maybe he said gt88 the a/r is a 1.08

Sep 29, 2009 | 09:21 PM

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MelScrilla

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I would think the 91 would be ideal for what your doing

Sep 29, 2009 | 09:39 PM

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DrTurbo

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PT88 is T4 and GT88 is T6. No relation in power though....as the GT88 will make ALOT more power. Spool up is almost identical if not better with the GT.