Engine Horsepower?

[vax]

However, the cylinder can be re-nicasil-ed. At least www.emot.nl does this at europe.

 

[atcspaul]

i read on dax's sight about removing the baffle and drilling 2 holes in the long pipe inside. has anyone tried this and what size bit if it works. the bit in the picture does not look that small. http://thatsdax.com/BICYCLE_ENGINE_KIT_TIPS.html they say on the sight it will give you the biggest performance boost on the engine

 

[gauge]

ats paul this is off topic but to ure question maybe alittle diffrence in low end power that it bascally a waste of time it it definity didnt get me and more revs outa the motor

 

[azbill]

I cut the whole tube off (2" stub)
seemed to give a boost and negligable increase in noise

 

[alesterfeind]

Cut off Baffle

I cut of the pipe down to 2 inches. I really didn't notice any more performance at all, but I really like the sound. It has a nice "putt-putt" to it.

 

[atcspaul]

thanks everyone. sounds like most were not thrilled by any power difference

 

[hot70cc]

I had my cylinder honed out after my bearings destroyed my piston, all is well so far. I guess its all in who wants to do it and if they are good at it. Have prolly 100 miles on my engine since honed out cylinder was done

 

[hot70cc]

oh by the way it runs much more smooth, not as jerky and boggy on the start up now.

 

[ultimusmaximus]

hey joe, dude if you want to increase performance go for it bro... dont let anyone tell you its not possible... all it requires is a little thinking outside the box... start off by matching the intake and exhaust manifolds with the holes in the cylinder... then have your head/ cylinder skimmed down or just remove the base cylinder gasket and replace with rtv to increase commpression... if you want to spend some money and get technical get a pocket bike hp carb and expansion chamber, then you will notice some serious hp!!

 

[andyinchville1]

In going with the boring theme, wasn't there somebody on here that was going to have a friend bore out the cylinder and add a steel sleeve to it?.....I can't remember who it was but it is here somewhere.....I think he was going to do it mainly for increased reliability tho.
Andrew

PS - I'm thinking bang for the buck more performance could be had by milling the head for increased compression and doing a high performance porting job.