Tricks of the trade

[unit_mx]

Smoothing out the castings improved flow = improves throttle response.
Irk will decrease your engine lifan as the motor is reving out harder however its in balance with reducing the weight placed on the crank.

MORE FREE STUFF:

Check out this article:

Dirt Bike Mods - Pit Bikes, Mini bikes, MX Bikes

Very very good reading!!!

[Shroomin]

would i need to tune my bike after these basic mods, i dont see why i would have to.
cheers
p.s great link unit

[unit_mx]

No you should be right mate , I didn't need to so it should run fine.
Hope that helps

[motoXXX]

i cleaned my exhaust manifold up (smoothed it out) and it ran like poo you may have to tune it cause of the loss of back pressure which may cause a bog when throttle is open wide straight away...

[WyldOne]

Good thread!

[jarrah140]

Great thread, some really useful info coming out of the woodwork! I see a few questions related to porting and polishing so I thought I might share this, there's some very helpful info here :

DIY - Basic Cylinder Head Porting -Standard Abrasives Motor Sports

And this other Link is to a general "Bike" Tips page. This place is a great site to have in your Favourites! It's helped me plenty! The Guy who owns it seems a bit odd sprouting religous quotes here and there but all in all a very informative repair / tips guide. Check it out, you'll see what I mean!!

Motorcycle Repair Course