Custom Expansion chamber??

[BlasterGuy87]

For my PW80 can I cut the engine mount off the stock expansion chamber and weld it onto a big YZ80 expansion chamber? Could this work, would it do anything bad for the engine. (The pipe will fit also)
PW 80 Pipe:

YZ expansion chamber

 

[BlasterGuy87]

sorry i ment to post this in off topicX(

 

[yamahaman126]

Try it, what's the worst that could happen. It's a PW80!

 

[York Racing]

Just remember jetting....