Do I have to Jet

[dnoftz]

I am building a bike right now and have a FMF Faty Head Pipe and a FMF Power Core. Do I have to Jet it? Also If i am going to ride it when it snows do I have to jet it?

 

[Painthehouse]

Yes and yes. Unless you want to rebuild a few times?

 

[dnoftz]

Yes and yes. Unless you want to rebuild a few times?

No I dont want to rebuld a few times. So what do I have to do to jet it?

 

[1996BlasterBoy]

Buy some bigger jets and do a plug chop

 

[dnoftz]

OK so after a lot of reading Im more confused then ever and ready to just use the stock every thing.

Here is what I have can some one help me figure out what Im going to need?

Piston bored 40 over. Boysen Rad Valve that was ported, FMF Fatty Head Pipe, FMF Power core Stock carb

 

[2001BlasterKiid]

Buy a larger jet than stock and do plug chops

 

[Jammies]

Your cylinder is bored over, not your piston.

You shouldn't need to rejet for reeds.

Yes, you will need to rejet for winter riding.

Yes, you will need to rejet for your FMF pipe. Richer on the main I believe. Wait for an experienced member to chime in on numbers for your jets.

 

[Larry's Shee]

Do you even know what jets you have now? Have you run it with current set-up? Have you tried the search function?

Get 270 280 290 300. Start with the 290, plug chop. If it runs good and plug looks good increase jet when it gets colder.