thats quick mate mines not a patch on that i take it thats the full compression head and barrel wish i went down that road i just had a rebore new piston nd rings can only get it goin 70 - 75 if i ws at the limiter but power vlave pulls and spins everywere lol
lol yh i hear that 1990dtr, my old 54plate dt125re used to do around 95 on the enduro set up with green wire earthed standard carb upjetted and dep pipe but it used to go bang every cupol months.
my 51 dtr now pushes about80 flat out but much more reliable.