Zillaguy Posted November 17, 2015 Report Share Posted November 17, 2015 Can someone i.d these cylinders? The bike they came from was shipped in from Germany. They are .50 over 68mm bore, have been sleeved, and ported. Notice the notches in the reed flange. Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 17, 2015 Author Report Share Posted November 17, 2015 Also notice the bridged dual boost port. Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 17, 2015 Author Report Share Posted November 17, 2015 Also i should have cleaned the ports they look shotty, but are just dirty. The porting actually looks nice and uniform. Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted November 17, 2015 Report Share Posted November 17, 2015 Interesting. sent from yo mammy house. Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted November 17, 2015 Report Share Posted November 17, 2015 If you have extra time. Throw on a degree wheel for shits, and gigs. Curious what durations are. sent from yo mammy house. Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 17, 2015 Author Report Share Posted November 17, 2015 I need pistons to degree it up. I was hoping someone could help with cylinder i.d so i could order the correct pistons. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted November 17, 2015 Report Share Posted November 17, 2015 Always drives me nuts to see all that work in to porting and sleeving, but no body welded the transfers up.... Do you have the reeds? Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 17, 2015 Author Report Share Posted November 17, 2015 Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted November 17, 2015 Report Share Posted November 17, 2015 Where do you see a bridged ex port? Take a venir caliper and measure the bore, wsm has Pistons and gaskets Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted November 17, 2015 Report Share Posted November 17, 2015 Where do you see a bridged ex port? Take a venir caliper and measure the bore, wsm has Pistons and gasketsI believe he was referring to the bridged boost ports. Have you ever seen that? sent from yo mammy house. 1 Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 18, 2015 Author Report Share Posted November 18, 2015 Where do you see a bridged ex port? Take a venir caliper and measure the bore, wsm has Pistons and gasketsNot the ex port. The boost port. Bore mesaures 69.63mm Quote Link to comment Share on other sites More sharing options...
camatv Posted November 18, 2015 Report Share Posted November 18, 2015 might have been a sleeve from some ktm. nothing in there looks all wacko or nutty. besides the weirdo crap in the intake flange area. if you do a top down measurement of the exh and transfer most can do a rod/ stroke combo comparison for piston, dome and cc setup. 1 Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 18, 2015 Author Report Share Posted November 18, 2015 I'll do that when i get to my shop in the morning ^ Quote Link to comment Share on other sites More sharing options...
registered user Posted November 19, 2015 Report Share Posted November 19, 2015 im thinking someone did the work way back in the day. doing something like that today wouldnt make any sense. ktm been using nikisil since '85 and probly even earlier. plus at that time the stroke was nearly 70mm so the sleeve from that time period would be all wrong. its easy enough to take a blank sleeve and cut the windows any where you want ,which is what im thinking they did Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 20, 2015 Author Report Share Posted November 20, 2015 Exhaust port measures from the deck down @ 25.4mm, and the transfers from the deck down are 41.8mm (opening simultaneous) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.