Thanks. Bare with me now as well!

My 21R motor actually has SE/SP barrels ('L' mark) and currently 'H' heads , therefore 21R versions. Isn't this the lowest compression / largest squish volume combination?

So I was planning to get 2 rear SE/SP heads, to match the barrels for OE squish volume.

I am thinking on the right track?

Cheers.
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30


Last edited by RichG on Sun Feb 22, 2009 4:05 pm; edited 1 time in total