when I see baron von hamiltons inlet port and that stunted bridgetype projection from the lower inlet I can visualise the piston skirt hitting that and breaking
if you put a piston in the bore and slide it up and down and press it against the inlet side of the cylinder you can sometimes feel it snag and imagine what that's like at speed
just like rd250/350 mitaka pistons with the tang designed to run over a bridge on the ypvs/rz that isn't their on the rd and rd lc/
they crack and fall off
im of the thinking that bridges are better allowing for wider ports either side and more area
which is all its about
one question before I attack my gila tomorrow, the two extra transfer boosts are they best fingered or holes?
ive seen both and like I said i'm a great believer in the more cylinder support left for the piston the better.
on rd350's a cooling slot is sometimes cut into the piston about 10mm below the rings to allow flow and aid under crown cooling - coinciding with the boost
anyone tried this?
plus im determined to get more exhaust area by installing aux exhaust ports
dunno if the stud holes are too close allow this?
I might just open into the stud hole anyway and close it up above and below with tubing