Bolt In Exhaust?

Hi Guys,

I have wondered ever since I got my moped what the bolt is for that is on the short section of pipe from the engine to the silencer? I took it out today and love the difference in sound. The bike sounds like a 250 not a 50 moped. I understand 2 strokes need a lot of back pressure. I am unsure whats the situations with 4 strokes like mine are though? Will it do any harm to leave it out and improve the exhaust noise? What differences will it make the bike, performance wise? Fuel economy?

Any advice is appreciated

Cheers,

Matt

 

Ok cool, cheers mate. How will it effect the fuel?

 

Okay, thanks for your help.

 

It'll burn out you exhaust valve too, just leave it in. Its only there from when the bike had a recirculation system

 

Okay mate thanks I was thinking of putting on a custom exhaust, I don't have much to spend. Anything you recommend? As long as it looks better and sounds a bit sportier? Not a full on sports exhaust.

Something like this..


http://www.ebay.co.uk/itm/125cc-Sco...84?pt=UK_Motorcycle_Parts&hash=item2567f5c96c

But that is two piece I don't know what I could get that would fit my bike? Need help!

 

When i had mine i found the best exhaust for persormance and sound was actually the standard one with the first baffle drilled out. Those performance ones are shit because you need some back pressure with such a small engine

 

How would I go about drilling out the baffle?

 

Easiest way it to drill down into the hole in the end of your exhaust. with mine i opened it up, cut it out and welded it back together

 

When you say the end of the exhaust.. Do you mean the end on the silencer? I can't see nothing in there.. LOL