Big differences between K26s?

[DGraber460 at aol.com]

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In a message dated 2/25/2002 6:41:54 PM Mountain Standard Time,
mdg3369 at mac.com writes:


> I got a measuring device out, and sure enough, the turbine
> outlet on the straight K26 (from the new MC motor) is 2.25" whereas the
>

I ran into the same thing when my original WX K26 needed to be rebuilt. I
pulled a K26 from a 5kt motor not knowing there were different K26's. I had
it rebuilt in order to do a swap and minimize down time.
Upon pulling the original out I found what you describe. My original was the
larger, and the rebuilt was a 2".
I decided to put in the rebuilt and see if bottom end would be enough better
as a daily driver to offset the drop in top end. I must say that low end is
_much_ better, and I haven't noticed any loss at top end. There probably is
but on the street, it hasn't been any issue.
Air being compressible, unlike a liquid, can be very contrary to logic. The
smaller orifice is slightly more restrictive, but also makes the "flow"
faster. Spool up is quicker, and this in my mind translates to a greater top
end impeller RPM, which _might_ overcome the resistance.
You _might_ be pleasantly surprised.
Just my trying to make sense out of what happened with my car. Maybe. Sort
of.

Dennis
Denver
"Suddenly, every drive is too damn short."
                   1998 R&T Audi ad.