Cycle Forums: Motorcycle and Sportbikes Forum banner

umm....suzuki AN125...i need more power

1622 Views 5 Replies 5 Participants Last post by  Jamrocks
guys...

i currently own a small scooter suzuki AN125....

it's a 4-stroke 2-valve 124.5cc

it'll do bout 65mph tops...

but recently i changed the bore to a 152cc and really gave a "whoof" to the tourqe, a quite impressive midrange... a 5hp bump from the previous 11bhp....but....oh, there's a but....

the thing is it's now stuck at 55mph...i've just lost 10mph on my scoot..!!! everything else is stock....i just needed the low-end power and mid-range pull...i'm...ahem...big.

everything else is stock...including the exhaust...but i did change the air filter to a freeier flowing one....and that's it...

how can i get back my 65mph....that's all i ask....a bit more i won't mind...but no less....well maybe 60mph is good enough...

regards..
1 - 6 of 6 Posts
i guess nobody here knows a suzuki AN125 huh....?? :confused

but i explained quite a bit....any experienced guys/gals out there might be able to help...??
Hey.

Greetings from Denmark!!!

Were did you find that bigbore kit?? I´m from Denmark and its impossible to find anything here.

Could you please let me know were to buy this kit?

Allan
Big bore needs better air flow both in and out. Get a pipe to match the cylinder and I think you will see improvement. The danger here is getting the fuel and air mix right, but on a 4 stroke it is not as critical as on a 2 stroke.

So with that said the changes needing to be made for a big bore kit to be effective are:
1. more fuel/air in at the right mix(might require rejetting the carb or replacing the carb).
2. more exhaust out.

The company/shop that sold you the cylinder should be able to help you determine the setup necessary or they shouldn't be selling the parts.

Rob
You need a big carb, get rid of your airbox and replace it with an aftermarket one or a K&N pod, put a performance exhaust on it, and remove the rev limiter ;)
You need a big carb, get rid of your airbox and replace it with an aftermarket one or a K&N pod, put a performance exhaust on it, and remove the rev limiter ;)
Hi,

Do you have a service manual for suzuki AN125? I need to check my carburetor, it has some bogging issue.


Thank you
1 - 6 of 6 Posts
Top