01' yz426 piston replacement

[LPT1485]

Allright, so I finally received my piston 13.5 to 1 wiseco in the mail.

Do you guys have any tips when replacing the piston? Ive done it on other bikes, but those were 2 strokes. It has the 03 cam mod, does this change the timing at all, and if so, can I just zip tie the chain to the cam to keep it in place?

Any help would be appreciated, or a link to a forum that has already gone over this.

Thanks.

[Fastest1]

No it doesnt change the timing. You wont be able to tie up the chain though. How would you remove the cylinder? Just mark the cam or reinstall it per the directions her on TT. That high of a comp ratio will require more octane than super unleaded has.

[Birdy426]

That high of a comp ratio will require more octane than super unleaded has.

Most of the time I get by fine on 91 Octane from the pump here in Cali...

[creeker]

I run 93 in mine and it works just fine.