Originally Posted by
Energydrink
Hey guys, i dont know any thing at all about motorbike/scooter/car engines. Im just wondering about my 125 scooter and if it is worth installing perhaps an exhaust and mabey even a bigger ( is it called cylinder head? ) to increase the "cc"??. Reason i ask is because i commonly see scooters on the internet and in real life with exhausts that im pretty sure are not Stock, and i assume it not only makes a better sound then the stock ones they install at factory but also gives you slightly faster speed or acceleration or some thing? ( i assume u have to also upgrade other things like air filter etc if you change from the stock exhaust ).
So like basicly what im trying to say is, is it worth installing some thing to bring it to a 150cc+ or am i better off just leaving it as it is and eventaully upgrading to the 155cc tricity scooter, and if it is worth installing some thing for little bit more speed, what is it i have to do, and how would this affect warrently and insurance etc etc?
Thank you.
Such aftermarket exhaust systems can make a small difference ... but without work on the inlet side (internal and external) as well ... you might get a 5-10 km/hr increase in top speed (with a tail wind) but with a (nicer ??) sound.
The down side is it will cost. And engine life will be shorter.
Two-stroke engines need a fine balance between rev's/speed and sufficient oil lubrication in the cylinder. Get too much in and the plug oils up and stops. Not enough and it seizes (stops ... quickly)
It can (has) been done and with varying degrees of success. You should read some of the Bucket racer threads in these forums ... and ask questions there. You will learn a lot just trying ... even without achieving much. But ... if you want to try ... there will be one or two that might (note ... MIGHT) help with some advice.
Don't keep track of how much time/money you spend on the project ... it will only depress you ...
When life throws you a curve ... Lean into it ...
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