My vote on number 9.

 

i am wondering if block (knife-edging/balancing the crank and removing balance shafts) or head work (porting/valvetrain upgrades) would be worthwhile on the stock turbo?

 

I knife edged my crank while I was sleeving my (B18C Honda) block and didn't see any appreciable gains...

Headwork - a definite yes.

 

Along with the tubular manifold, might as well do the tubular 02 housing, also.

And the headwork...I'm doing it as soon as I take a couple weeks off from track events & auto-Xes and we'll see how it does powerwise.

Hopefully, with that done, I can hit the dyno again and come close to 400whp on pump gas.

 

newbie questions:

what are the downsides to lightening/balancing the crank if any?

people without balance shafts usually mention more vibration/noise but is this compensated for by the fact that the crank is lighter and balanced?

does typical head work hurt low-end on a turbo car?