Would there be any advantage to upping the comp ratio on a rotary or would it just increase blow-by?

 

Same advantages as with a piston engine. You can have your rotor face recess area welded in then re-machined for higher comp. A lot of N/A racers do this. BTW, not a good idea on boosted applications, as the later model 9.1 ratio is good enough.

~Mike..........

 

I figured it would be advantageous but hadn't heard of it being done. What does it cost and who does it?

 

again... a quick search yielded...

https://www.rx7club.com/search.php?searchid=423300

I know Hayes Rotary used to offer this, Pineapple Racing might still do it as well. You best bet if your seriously planning on doing this is once again..... SEARCH....lol... sorry I couln't be more help.

~Mike...........

 

You best bet if your seriously planning on doing this is once again..... SEARCH....lol... sorry I couln't be more help.

OK..OK.. I'll do a search

Thanx again man