Smallenginedeals

Ok just finnished putting this bike together and am having a little trouble jetting it. Just to let you know I have un-ported Cubs and am running br9 plugs. I had the bike running well with 17x41 gearing but just brought it to a 16x40 and am having some trouble because The bike feels lean so I havent run it wide open. I brought down the gear to run 1/8 mile asphault drags. Previously w/the 17x41 gear I ran a 7.56 ET at 88 mph w/ a 148 main and a 45 pilot w/ the airscrew 3/4 turns out (may have been lean but was only getting it in 4th gear in the 1/8 so it was hard to tell by the plugs). Now Im wondring what jet to run and what time I should be getting w/ these mods in the 1/8 (check my sig for details) Please let me know what jets I should be running or at least a good starting point. I am at sea level. Overall Im happy w/ the buildbut i want to get this thing on the money

Got the problem all sorted out! The nut that held the adjustment screw had backed out and caused it to weld. I put in all the new stuff and put the pancake bearing in now as well as locktite on the adjustment screw. I suggest it to you guys even tho ive heard of others not recomending that. Just thought id let you know how i got it out as it may help others so here it goes. I left the whole top end on and flipped the motor upside down after removing the casing screws and got all the nuts out of the bottom half and split the casing enough to get to the back of the rod where the pushlever comes down. I broke it free and pulled it out that way. I resealed the casings after with some gasket maker or silicone, put it back together and there she is. Thanks for the help.

My rod is welded in there, any easy way 2 get it out? Can I just split bottom half of casing or is ther an easier way. I cant pull out the puller lever either. Read a couple posts about this but none speak of how to fix it. Whats the easy way??? (If any)