1975 WR400 sleeve

I ordered a new drop in sleeve from Rick Horvat and since I live in a rural area (no machine shop) I put the new sleeve in the snow for about 30 minutes, then I heated the cylinder in the BBQ for about ten minutes, dropped the old sleeve out with a hammer and a big punch being careful not to hit the aluminum part of the cylinder, then drove the new sleeve in with a block of wood and a hammer. I placed a long skinny bar in a vice to run threw the bottom port, re-heated the cylinder to twist the sleeve till all the ports lined up it worked pretty slick

Mmmmmh Nice ! You're a real Mc Gyver

You do know it still has to be bored to fit a std. piston.Maybe you can come up with a way to do that too.

I could put it in the mill at work and bore it but ill have a machine shop do that part of it for me, I thought I was pushing my luck with the sleeve the way I did it but it saved a $100 and a 130 mile road trip