85 200x advice

[hogmuffin]

I am rebuilding my 85x motor that had a 65.5mm wiseco piston. I am replacing it with a shindy 66.25mm piston. I've already had the cylinder machined to mate up with the new piston. My question is will I need to change my carb jetting at all to accomodate the new bigger piston? Right now it has a stock main jet. And stock exhaust

[rg97]

i would say either bump your main and pilot up one size, or lower the clip on the needle one spot

[yaegerb]

Are you running a 1985 200x carb?

[rdlsz24]

Usually when you just do a clean up bore you don't have to rejet, but see how it runs

Rob

[slashfan7964]

I agree with rdl here. See how it runs first and if you need to bump it up, then do it.

[hogmuffin]

Yeah its a stock carb. Thanks for the advice guys, should have it together in a few days!

[oldskool83]

any reason you replaced with shindy and not another wiseco?

[hogmuffin]

Price mainly is why I went with the shindy. I plan on selling the trike after the rebuild and I already have more into it than I can sell it for. Anyhow, I got it back together, and found that I had to move the needle up to the highest position. It starts first kick and idles great. My next question is how long do I run before doing the break in oil change?

[Yamaha_Rules69]

Run it for a few hours then change the oil.