1. L

    Climbing hills, real ones.

    Howdy, 1st post and happy to finally join! Wasn't sure where to post this, as I'm new, but here we go. I've been interested in making a fresh hill climber for hiking/mountain bike/dirt bike trails. I am chill as a cucumber if I can't go faster than 25mph max speed, as I know with these...
  2. P

    New style of 66cc engine:To port or not to port

    Hello everyone, This is my first post. Some background on myself in regards to motorized bicycles is that I have already built on 66cc motorized bike. It was pretty junkie bike but I really enjoyed working on it. Also I got it going about 27mph with all stock on 24" wheels. It became so...
  3. M

    Correct way to port match a chinese 80cc engine

    I have finally busted out the bits for doing port work. Never done this before but looking to get at least 30mph out of a Micargi fat tire im building. I did my best to port match the intake and also make the exhaust a bit bigger. Not much just a bit. So does this look correct? Thanks for any...
  4. J

    The return of NEL LUSSO!!! (porting)

    So my bike is naked at the moment. So far I have a coil and mag on the way, rings to order, studs to order, and a cheap but better carb to find. I have a month to work on this and wanted to look into porting my cylinder. I was hoping you guys could point me in the right direction on this one as...
  5. T

    exhaust gasket keeps blowing out

    I have an issue with the exhaust gasket keeps blowing out I replaced the stock studs with Allen head bolts I am using the voodoo expansion chamber exhaust, I put lock tight on the bolts and tightened the bolts until they wouldn't go any more and they are not bottoming out either , I guess my...
  6. R

    port timeing help? tuned pipe

    gi fo all those that have done port mods im sure your have done a port timeing chart useing a degrea weel anywas to the point im trying to make a tuned pipe during my off season iv only got 2 weeks to have it fineshed and i nead the port timeing. if any one had the exhaust port angle the...
  7. hioctane

    third transfer port reed kit and porting 66cc

    Hey guys just wanted to show what i did to my 66cc head . intake match port to reed kit,exhaust open up and smooth out etc. etc.. http://www.youtube.com/watch?v=DsIHtz0p-Pg&feature=youtu.be
  8. DuctTapedGoat

    Porting - are you actually taking advantage of it?

    I hear people talking about porting all the time. I see pictures of ported motors - and they're using stock exhaust and stock intakes. If you're going to port, wouldn't you need to use a modified exhaust and intake that actually matched the head porting? I plan to first modify my exhaust...