track bike, .020-025 mill, .45mm hg, good serdi or cnc valve seat recut and that gen 1 cam at 107, ex around 106. porting adds power also, but 2nd to the mill/vj. run 5.50's with this combo including porting. that carbon stain ring at top of cyl no concern, can generally be removed with good solvent on cloth or light scotchbrite pad. no need to rering. like the way ur build looking-clean, but would'nt bead blast the head, glass particles get in oil galleys, embed in all the blasted aluminium but release with oil and heat. degreed gen 1 race int several different lc's, these numbers made best hp, torque. who's doing mill/porting vj?
Last edited by gaz; 09-19-2018 at 08:19 PM.