porting with a turbo 2-stroke

1racer said:

I am just curious how any of these sleds work when you port them with a turbo on them? Is there a significant gain or is it just minimal? Does the porting need to be different than when you run with just motor only? Just curious?

Click to expand...

I don't know for a fact and have never tested this but from what I know, there is a significant difference between NA porting and turbo porting. I don't think NA porting will work well with a turbo. It is designed to use the scavenging effect of the pipe and pull of the intake stroke more effectively. A turbo port job I would think has less to do with the pipe scavenging and more to do with efficient air movement through the motor.
Wish I knew more about the subject. Can anyone out there fill us in?

Years ago dynotech did a turbo test on an xlt engine and a xcr engine the xcr engine had more aggressive port timing. The xlt made better power than the xcr when turboed. The Ultra had real aggresive port timing and they did not really respond to turboing at all.