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jetting change from FMF to pro circuit?


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hey guys

 

Gonna be trading my FMF fatty Gold series with chopped gutted powercore 2 silencers, for my cousins Pro Circuits.  He is planning on doing a 4 mil and making it a Ice racing bike.  So he would want a better top end pipe anyway correct?  

 

Am I going to need to rejet for the swap? im at sea level 290 mains 30 pilot, 20 degrees celcius.  I would think they should be pretty close.

 

Also anyone know if I can use the pro circuit expansion chambers and the FMF silencers?  my FMF silencers are pretty much straight through, and I chopped them in half.  

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So you're trading pipes so he can use the fmfs cause they're a better top end pipe? That what I'm reading?

 

No, he bought a blown up 2006 banshee for $300. the piston was in about 20 pieces.  The plan is he wants to do a 4 mil for ice racing.  he currently races his KTM so this wont be done for a while I would imagine.  I constantly drive down to the states to pick up parts for him, so he kinda owes me lol.

 

He said i could try them out and if I like them, we trade. Figured if he's is ice racing he is gonna want something like R2, shearer, CPI, etc?

 

they are in pretty shitty shape compared to my FMF's ,  will need to be painted, hopefully just cleaned up.  and ya I had the turbinecore 2, they had a sparky and some turbine device, so thats all gone now.

 

 

.......? gay

 

ya that stupid lime green frame does look pretty gay homo. real original.  gonna throw some Monster stickers on that too?

 

 

DEC82F97-56AA-448D-BBB6-E08B27F73E70-426

 

073BA2F9-F95D-4F1D-AC02-8D308BB74B94-426

 

49551649-0AF0-4329-871C-61ADBA4896F1-426

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The jetting for the FMF and PC's is gonna be pretty close. The FMF's are not gonna be a top end pipe if that's what you were thinking. And as for the ice racing set up the track size dictates whether the set up needs to be more top end oriented. I had a stock stroke bike for a bit and the FMF's did pretty well.

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The jetting for the FMF and PC's is gonna be pretty close. The FMF's are not gonna be a top end pipe if that's what you were thinking. And as for the ice racing set up the track size dictates whether the set up needs to be more top end oriented. I had a stock stroke bike for a bit and the FMF's did pretty well.

ok cool, thanks man.  I know they are not a good top end pipe, or really a good pipe at all.  They came with the bike when I bought it.  Ive just heard that the PC are a much better pipe, and I have a chance to try them out for free, and keep them if I like.  I ride trails, forest roads, and a bit of mx. 

 

From what he has told me, the Ice tracks are mostly 4-5 gear on his KTM.  So figured he Would want a better top end pipe than the PC. 

 

 

 

you'd probably think it would look good if it had some fmf pipes on it lol, it's candy apple green fuck stick...

 

nope, do you not know how to read? 

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I remember somebody telling me a long time ago that PCs made about a horse on top of the fmfs. Neither are a "bad" pipe. They just don't have the top end scream the dragish pipes too. They hit a wall about the time the bigger pipes start to come on.

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