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best price on a tc88A?

Sportster Motorcycle Engine Conversions - The Sportster and Buell Motorcycle Forum - xlforum.net
hey gang,

gotta question...as usual.

background for new guys... 1250 kit, 10.5:1, hammer .600, XB heads ported with billet mainfold to macth, large valves (1.9 intake), reverse dome 30 degree pistons, CV40 45/190 3 1/2turns 2 shims,V/H 2:1 blackout. DSPT-1

the issue is detonation at low rpm. it is really easy to hammer the hell out of it when it is warmed at WOT at the group c 28c setting (which is what i need for the higher rpm 28 degrees at wot). to combat that i have used the 24c curve to get the initiial timing retarted enough to be streetable. it seems to work bu now over all i am too low. answer tc88a or the new tc88ex with more over all advace available...but would still let me control the lower end where my issue is of course.


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