What he is saying is even though the shaft sizes are the same, the exhaust wheel is smaller on an HX35 than an HX40 so it is less stress on the shaft.

 

I did mine too. The core shift on these castings can be pretty bad. I had about 1/4" inclusion on the turbine inlet.

I also did my manifold outlet, and the manifold inlets as well.

I dropped a little boost (1-2psi) AND a little EGT (MAYBE 100º), so I think it helped a bit.

Definitely not worth the money if you'd pay someone to do it. But if you have more time and curiousity than anything else (like me) you might want to do it.

JMO

 

I did my manifold as well but didn't do too much on the inlets from the head just because I plan on a whole new manifold soon. I did it as the same time as porting out my head (which I gasket matched the exhaust outlets and hogged out the runners) and I have seen a HUGE reduction in smoke went from clouding 1-2 lanes to just a really thick haze and a solid 300* or more drop in EGT's. And I can build about 20-25PSI by 1500-1600rpms, before it wouldn't have done that until 1800-1900rpms.

 

Was it still hot outside when you got it back together Muddin? That is amazing if your port job lowered egts and increased spoolup that noticeably.
Just making sure the cooler autumn air wasn't swaying your findings. If the port job did all of that, I think everyone should at least consider it.

 

There was 3 months of down time so the last time I had driven it was during "summer" but around the middle of october it wasn't much cooler, I have been taking a lot of 6 hour trips lately so I'm sure underhood temps would be pretty close to the same... Smoke though I don't think would have been reduced that much just by lower ambient temps...