Pages: 1
Posted by: nyroc
The airfilter is very restrictive. If you could manufacture a freer flowing one you would get some more power. You would need to rejet.
The compression ratio is 5.9:1. It needs to be raised to 8 at least to get decent power out. Since it is air cooled and has not valves in the head, this would be a simple matter of planing the head or filling in the crown in the combustion chamber. I am not sure what has to be done since I never took the head off mine. It takes a small amount of measuring and calculating to get the compression ratio right. You do not want it too high.
Posted by: haulin
Can you remove the baffle to get more bottom end out of the 50 and if so will I need to re-jet it? I'm just trying to get some more power out of the thing. I've already taken out both restrictors and the spark arrestor plug. Thanks
Posted by: haulin
Yea, both of the restrictors are out, but I haven't changed the jetting at all. Should I?
Posted by: haulin
If you take the elbow intake off and look on the head side, it's right there. I looks like a nickle with a slot cut in it. I cut mine out with a dremel but some folks have had luck with heating up the intake with a torch and removing the restricor out with a flat head screw driver.
Posted by: haulin
Yea, I took Matt's advice (kinda) and I cut three inches off the muffler insert and then drilled holes in the rest of the insert: drilled 4 5/16 holes in the airbox lid: took out the first pilot jet and jetted to a 65 main. I tried a 75 and it ran like crap so I went to a 70. It got better but still bogged a little on top end. So I ended up with a 65 with the fuel/air mixture screw out 1 and 1/4 turns out from closed. I also moved the needle clip to the center position. I am figuring that it goes about 3 maybe 4 mph faster and it def. has more bottom end. Thanks guys for the help.
Posted by: madracing
i put an fmf pipe on my daughters old lt50. made a big difference.
Posted by: pinch
I took out both restrictors and milled the head down 1,3mm and removed the airbox lid, rejetted to a 75 main, HUGH difference.
Posted by: cme4pix
Have you removed the intake restrictor (in the pipe between the carb and head). It is a b**** to remove, but I was able to jet up a little and it really woke the little machine up!
Posted by: cme4pix
Re-jetting seemed to help a little. I don't know much about what was changed, I had the dealer do it. These little machines will never be screamers, but they are awsome for the little people!
Posted by: raptor623
Hi, what two restictors are there? I know about washer in exhaust, where is one in the intake? I didn't find one in there? Any info. to make my kids lt50 faster would help! Thanks!
