NRG 50 conversion to 180!!! jetting issues aswell

Right bought a nrg 50 complete! Totally gutted the bike back to bare frame got all hexagon loom for bike for a 125(converted to 180) engine... now i used the 50 engine mount which fitted pukka with no headeache(after grinding mount to size) but once engine is in the shock is really out of line but the wheels have great alignment... ive just ordered a typh 125 mount to bolt in but before i start cutting and shutting i thought i would seek advice from yourselves as im a novice at these conversions but have been working on bikes since i was 14 now 25 so if anyone can offer any tips that would be appreciated( please be aware i dont wanna buy a 125 typh and stick nrg panels on it ive got this far and im not giving up ive made a start so i shall finish) :yahoo:

 

Re: NRG 50 conversion to 180

a 125 mount will not work on a 50 frame without some serious bodge it would have to be welded solid and this isnt good as its not designed to
if youve still got a standard 50 shock then it should be in line but too tight too fit you would have to either get a 125 shock (best) or grind the spacer down on the cases.
best thing to do would be buy a typh 125 frame . makes things easier for insurance ect

 

Re: NRG 50 conversion to 180

Thanks for that lee i stuck the original hexagon shock on and hey presto its straight as a die... I need help on another topic if you can help ive now put my 180 barrell and piston on and thought as ive taken the cc up the carb will need upjetting? plus i bought a scorpion sports pipe for it aswell what jet would you recomend its a standard 83 jet and everyone says you upgrade by 10% but seen as ive uped the cc and exhaust i sort of confused myself lol im in a rush to get it done as im hoping this dam weather changes soon also any advice on rollers?

 

For a scorp I dont think you need to upjet at all, maybe to a 86 at most. And it should run ok on just 12.5g rollers.

I'd like to hear how well or bad this bike rides when you've finished it!

 

well the engine is originally a 125 and im running it on 125 running gear.. Im gunna put my 180 barrel and piston on the weekend and just wanted to make sure weather i needed to up jet for the CC change and for the pipe cos its the the standard 125 carb

 

Im pretty sure a 180 2T runs a 86 or 88 jet standard. The 125's run a 82.5 jet. So I would start with a 90 and down jet untill it runs best.

 

the 180 barrel doesnt fit the 125 cases without milling....

http://www.scootershack.co.uk/viewt...02495&hilit=180+barrel+into+125+cases#p202495

 

Thanks capri dave i had a funny feeling they didnt fit but i thought id check and they dont there aint alot innit mind... Im just ringing shiny red now to see when i can send it over to them thanx for your reply...