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20v 5b wastegate question

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Old 11-10-2003, 05:10 AM
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Default 20v 5b wastegate question

whats the stock wastegate set to off a 20v turbo?i.e. how much boost will the k26 make with the stock wastegate.
Old 11-10-2003, 05:27 AM
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If you eliminate the wastegate control for testing purposes it opens at ~6psi IIRC
Old 11-10-2003, 06:52 AM
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thanks, thats what I needed to know
Old 11-10-2003, 07:52 AM
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Welcome
Old 11-11-2003, 02:06 PM
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Default Wait...what engine are you talking about?

K26, 20v, 5B...

Are you talking about a 20vt I-5 (3B, RR, AAN, ABY, ADU)? Any factory 5cyl 20vt uses a K24 turbo (excluding the Sport quattro's KW motor, which uses a K26/27 IIRC). Some of the earlier 10vt's used a variation of a K26.

You may want to ask the urS car people or some of the 5ktq/200 or urq people about when the factory external WG can no longer remain closed. I've never tested mine, so I don't know.
Old 11-11-2003, 02:35 PM
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Default I assumed (shame on me perhaps) that he was asking about a 20v B5 and had a typo.

Completely missed the K26 reference. My bad ...
Old 11-11-2003, 05:50 PM
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Default Re: I assumed (shame on me perhaps) that he was asking about a 20v B5 and had a typo.

yeah, I missed it at first too, hence me just posting tonight...

I'm wondering if 5b was meant to be 3B? Or it could be 5v since B and V are next to eachother. But then it wouldn't have a K26 on it, unless it was a smaller K26 with a custom manifold and was a 2.1L 4cyl. Even with 2.1L, a small K26 is pretty laggy (drive an early 5kt or urq, both used the oil-only smaller K26 with a 2144cc 10v). I'd never do it on any 4cyl.
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