Dominant wiseco piston?

[huskihl]

Why not source a racing sparkplug that doesn't project very far into the combustion chamber ?

That might work until the next unknowing owner replaces that plug with the one his dealer gives him

 

[rayjay257]

That might work until the next unknowing owner replaces that plug with the one his dealer gives him

I guess I don't worry about the right things.....

 

[RedneckChainsawRepair]

I had a domed 375 ported by Dan Henry that you either had to side gap regular plug or just run the same plug I ran in all my ported saws back then.
No problems clearing with a WS5F or E I think it was. Also a version in NGK Even ran it in the race saws.

 

[huskihl]

I guess I don't worry about the right things.....

I'd rather just run a flat top and turn the squish and base. The owner doesn't need to remember anything more than replacing a standard plug should he have problems with it