Stock twins to non-sequential...

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Old Apr 14, 2005 | 08:42 PM
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$100T2's Avatar
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Stock twins to non-sequential...

I searched and didn't see anything about this... It seems like searching for "non-sequential" brings up every thread in this section.

Anyways, straight and to the point. I bought an 88 'vert with no motor or trans. I want to throw a 20B into it. Now, I'm not looking to get all Captain Insano here and shoot for a million h.p. Bottom line: If I convert the stock twins to non-sequential and leave the engine be until it either explodes or seizes or whatever, what kind of power can I expect? Can I run a Racing Beat TII turbo-back exhaust with a custom down-pipe for it?

Yes, I know this is difficult, expensive, etc, etc. Maybe someday I will do the streetport T-9000000 swap, but for now, I just want something that will be a great, solid performing car. I saw RETeds how-to, and I know that just bone stock, it's at 276 h.p. So, I'm thinking with the RB exhaust, haltech, and switching the turbos to non-sequential, I could be in the 325-350 range, which for now, is quite simply good enough. Is that realistic?
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Old Apr 14, 2005 | 09:31 PM
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Attila the Fun's car is very similar to what you describe:
http://www.cris.com/~Asam/20B.html

His dyno with stock porting and non-sequential turbos in the link below. A bad BOV skewed the dyno results a bit. IMO the peak HP should have been around 6500rpm rather than 6200rpm.
http://www.cris.com/~Asam/Dyno1.html

Last edited by Evil Aviator; Apr 14, 2005 at 09:50 PM.
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Old Apr 15, 2005 | 04:15 AM
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With a street port and 6 psi on rebuilt twins, the 20b will put down 340+rwhp with full exhaust. That should be very reliable for a long time at those numbers.
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Old Apr 15, 2005 | 02:47 PM
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Thanks guys. Next question: Is there a how-to anywhere on converting them to non-sequential?
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Old Jun 21, 2005 | 06:39 AM
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I'm interested in this as well

Anyone have any info?
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Old Jun 21, 2005 | 08:00 PM
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i have a set of twins already converted if anyone's interested. very low miles. $100 plus shipping. that includes the manifold too. and i have a stock dp if you need it.
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Old Jun 22, 2005 | 03:10 AM
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S3 RX-7 - 20BT 450 RWHP
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You are a bit far away, do you have any info on converting them though?
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