I'm planning to fit a turbo to my bike but need some advice as to what spec of turbo would be best suited for my application.
112mm bore x 90.5mm stroke
Std compression 10.5 to 1 (8.5 to 1 pistons / Carillo rods being fitted)
Std power 125rwhp@ 6200rpm
Std torque 160Nm @ 3200rpm
7750rpm rev limit
Chargecooler integrated with new plenum.
Looking for a turbo that will support 200rwhp max with early spool and as little lag as possible.

 

a garret T2 should do the trick just nicely. spool up time is really quick being a smaller turbo

 

T2 won't flow 200hp..

Something like a GT15/20 should do the job..

 

Speccing turbos for bikes is quite difficult. They normally have a totally different ration between the hot and coold sideds to a car.

With a 1000cc four pot. You ight want to flow the same 300 bhp worth of air as a car but you have much less inertia from 250 cc slugs of exhaust to spin up the turbo.
Not a problem with your 900cc cylinders.

I take it this bike is a Harley Vrod or something?

 

Bike is a Suzuki M1800R
I had also wondered if a twinscroll design would be beneficial.
I know the approximate rating of the turbo I require (25lb flow ish) but it was advice on housing sizes etc that I was really after.

 

BTTT

 

Fuckin nutcase, as if bikes arnt fast enough.