CO951

So I was just searching for a k27/8 for sale & ran across this.
http://m.ebay.com/itm/171826086833?nav=SEARCH

Anyone know anything about this turbo and/or the seller?

Xaerran

I don't know anything about them. This being a K26/6 housing, I am skeptical you will get the gains you are looking for. This may be a bit better as a hybrid , but it will dyno map more similarly to the first map in JacRyann's post... not the second.

What is your timing like? I am in Boulder and have a K27/8 I will probably swap out for a GTX (doing a stroker build soon too). Perhaps we could meet up and chat more. It would be great to meet another 951 guy.

Shoot me a PM if interested.

JacRyann

I think from configuration of the 1st-graph, that the factory wastegate and manual-controller is responsible for the diving torque-curve. Probably drops 5psi from max by redline.

But yeah, a K26/6 housing with big TO4E-57 compressor (500bhp) will be choked at the high-RPMs as well and have dropping torque due to exhaust backpressure. Not sure what "stage-III" turbine wheel is. If it's the wheel that's matched to #10 housing 68mm, that's not what's pictured. Looks more like the "stage-II" #8 housing which is 55mm.