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Speedy Squirrel Speedy Squirrel is offline
Rocket Scientist
Join Date: Jun 2008
Location: Detroit
Posts: 898
Where did you get the 68mm figure for the turbine diameter. At this site they said it was the 83mm turbine:

BorgWarner Bullseye Power S300 Turbo Turbochargers

I thought that was possible, but then I found another site that said it was the 76mm turbine. What is the deal? I know both of the those wheel sizes exist in the old Schwitzer (now BW) S3A and S3B turbos. I know of no Schwitzer 68mm turbines, only a 70mm S2B. The Bullseye parts appear to be Schwitzer (BW now) turbos.

I think putting a small housing on a big wheel is not as good as putting a big housing on a small wheel.

I think clock time to boost is more important than RPM to boost. Many turbo's can make it to 1 bar at 4000 RPM starting at 2500 RPM in 2nd gear. The point is which one can do it quickest isn't it?

Originally Posted by 911st View Post
Good to hear.

You have a much bigger turbine than the K27-7200 (58 v 68mm).

Seems the smaller A/R must be the ticket to make it work as you wanted.

Would be interesting to moniter the pressure in the header before the turbine against boost to be sure the turbine is not to restrictive but I am doughting that is an issue.
Old 07-11-2010, 11:08 AM
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