Motorman,,,,,, I read this And was wondering...
I've been keeping my mouth shut for a long while but I have to say somthing.
TG you need to let go of the marine mentality man. If it works for you great but I know I can make more power than you on 30% at .018 and 40% at .021 with zero detonation at 4.5 mm exhaust height. we do it every day no problems. What you shouldn't be doing is spinning people off towards unrealistic head clerance on their production motors. If its a hand built thats a different story but you do them a disservice by directing then toward toward a global meltdown of their hardware.
If you feel inclined to take .008 thousanths head clerance advice do so at your own risk that is all I have to say.
I have ran My motors ( 12`s ) at .018 With 30%.
I wanted to what you felt about about .015 with 30%
I have fuel made to my spec. with 6% caster & 4% synth.
I have raised the Exguast timing .007 in a way with keeping the 4.5 mm rule in check.
This motor will be a RS- 12 TS1 Turbo with a #5 plug.
Let me know what you think.
I personaly think I am Ok But I have not been in the Motor bus. As long as you . Thanks In advance.