Turbo gurus...Help?

Eric Huppert dragracer at netstep.net
Wed Jan 24 21:03:16 EST 2007

Screwed again... Never fails!

Been having some oil smoke at cold idle and decided to finally swap out the
turbo on my 200 20V. (does have some endplay)Picked up a good K24 and was
pulling mine when I noticed the exhaust flange was smaller on the one I
picked up...

Seems that one of the two previous owners had the turbo replaced with a K26
(vs. the stock k24) and had a K26 flange welded on the exhaust. They did a
nice job, I never even noticed the weld until now....ARGH.

So, based on info below do I just put another K26 in or do I find a K24 head
pipe and install the one I got. I can exchange the K24 for the K26...

ECU will be chipped, already have them but wanted to straighten out the oil
issue prior to installing them. Also have the SAMCOs and clamps...

Am I shortchanging myself by installing the K26?



Remembered reading in the Wiki info from Ned Ritchie

 Subject: K26 turbo

The compressor wheel size determines quantity and pressure.

The K26 having a larger wheel can produce more pressure, but supplies less
air as the smaller portion of the wheel, the inducer, the part that you see
with the blades, is Smaller than that of the K24, and therefore a

The turbine, the hot end, on the K26 can exhaust air for 430 hp, but the
compressor falls way short of that monumental task. With such a free flowing
exhaust the turbine does not spool up quickly, and when it finally does the
compressor intake is too small.

So the K26 will not make you a happy driver.

The RS2 has the same diameter compressor wheel AND a larger than stock
inducer. It also has a smaller than K26 turbine exhaust, but not as small as
the stock K24.

It is a better balanced turbocharger for higher horse power, but nothing
beats the stock turbo for quick around town stop & go driving.

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