Well I got a new OS .18 engine for my BJ26 about a yera ago but havent ran it much. I've only ran about 3 tanks of fuel through so far. Why? Because it bogs at WOT for some reason. I have checked it for leakes, checked the drive wire to make shure its not slipping, but still past 1/2 throttle it bogs and dies after it revs high only for a few seconds while puffing a nice cloud of blue smoke. I have leaned it out 2 hours from the factory setting, still getting plenty of smoke and a little raw fuel out the back....any sugestions?

These are old pictures of my rebuild.


I think I'm just going to throw the ported .15 back in there. At least with that engine I could run it at WOT all day with out an issue.