cheap reliable power needed

[toffeemandog]

finally decided to keep the v100 and do it up(see projects). I will probably have to use it for work and sell my px or lammy. i dont work that far away but have never ridden a smallframe. im about 17 1/2 stone so think i will need a bit more power. i am thinking about getting a 135 kit but dont know if i will need to get a 4 speed box to benefit from this route. would i be better off trying to source a 125 , 4 speed engine.. also are the 135 kits a straight cylinder,head ,piston swap or is porting required..will i retain the standard carb or need a new one.. i have changed barrels ,pistons etc but never rebuilt engines..i havent paid for the px yet so money is a bit of an issue but can probably stretch to a couple of hundred quid on the engine..thanks.Tony

[toffeemandog]

not really bothered about top end, would sacrifice that for acceleration but need to do about 45 ish

[hank]

you're right, you're gonna be limited by the 3 speed box. depends on how much you want to spend. the cheapest option would be to fit a dr135 kit (matching the ports will help, but you can just bolt on to get a decent increase in power). i presume the std carb is a 19/19, that should be ok, also get a half decent exhaust - leo or polini left hand shouldn't cost more than £40 or £50. you should do more than 45mph with this setup.

of course, either getting hold of a 4 speed engine or the internals to upgrade it is the best option

[toffeemandog]

thanks for the reply..how would the standard 100cc engine compare to my px125 for acceleration . the engine was running really well prior to taking it out but i didn,t ride it as the front tyre was flat and the back brake seized..

[jonnysnatchsniffer]

i have a 4 speed gearbox that i now do not need including layshaft if ya want it you can have it for what i payed for it, pm me if yer interested

[toffeemandog]

just trying this image posting lark

[mikea565]

I have a spare et3 motor (primmy) that i would be willing to sell for the right price.

Polini 130 (ported casings), mazz race crank, SIP 4 plate clutch, lighteneed et3 flywheel and 12volt conversion on stator, with a leo vince pipe, 25phbl manifold. complete motor (just needs a carb) . Great tourqey engine.