20vt conversion exhaust options, K26 turbo

Stpndsmnn at aol.com Stpndsmnn at aol.com
Sun Jun 16 04:08:53 EDT 2002


Hey Mihnea,

I am currently running a "big" (UrQ) K26 on my turbo converted 10v and I have
no trouble getting useable boost before 3000rpm and by 3100 I can have
10-12psi if I choose...   Even though the 20v is not exactly comparable to
the 10v I should think you would have good boost well before 3800..

A good compromise between a K26 and a K24 would be a K24 with a well ported
exhaust housing..  Not many people talk about doing this but porting the
exhaust housing can make a smaller turbo flow well into the upper ranges
though it does lose maybe 100 rpm or so in spool time.  I do know this from
experience as I have done some turbo porting for a few Eagle Talon,
Mitsubishi Eclipse owners.

I have seen Eagle Talons make over 250whp on a ported stock turbo which I
would say is actually smaller than a K24!  That is kind of an apples and
oranges comparo but the principle is sound.

Good luck,
Matt Kramer
'83 CGT t with K26



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