K31 hybrid 75mm

CTD2500

CTD2500

Brown Between the Cheeks
Joined
Aug 3, 2013
Messages
482
I'm selling my K31 hybrid turbo that I used as my primary.
I was put together by the local turbo shop. It has a cast S475 compressor wheel, the housing has been machine and the rotating assembly balanced. This turbo is wastegted and has a spring gate that I made. I ran it at 25psi, but I don't know what the boost setting is at now. It ran well, specs are S475 compressor, 86/77mm turbine, 1.28 A/R internally gated.
Turbo has about 5000 miles on it.

Being that it is a one of a kind, I don't know it's value. I'll start at $1000.

IMG_1307_zpse0a0e796.jpg


IMG_1765_zps7767988c.jpg


IMG_1605_zps897cab61.jpg


This is the spring gate (K31 on the right) I can include the stock actuator if needed.
GEDC0099_zpsf4db81b9.jpg
 
TTT.
A special machined bushing was made and pressed into the S400 wheel to make up for the difference in shaft size between the K31 and S400. The hub and superback were also milled down for proper height on the back plate and so there are enough threads to torque the nut to spec.

Check it out, it's a good DD primary!
 
That's correct. Not really a step "up" though...a 4202 is about the same as this one performance wise.

K31 still for sale.
 
You must log in or register to reply here.
Back
Top