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-   -   Jetting question's on FCR Carb's for a raptor. (https://atvconnection.com/forums/yamaha/117416-jetting-questions-fcr-carbs-raptor.html)

300exextreme Sep 14, 2003 01:15 AM

Jetting question's on FCR Carb's for a raptor.
 
I was wondering what jetting specs you guy's are running on your raptor's with the FCR's installed.Mine is internally stock for now and I was wanting to know what jets,needle's etc I should start off with.My mods are a Spark's pipe,Pro flow kit but I will be removing the air box completely for a dual k&n setup.

Treeshot Sep 14, 2003 02:46 AM

Jetting question's on FCR Carb's for a raptor.
 
142/145 mains, OCEMR needles on third clip from the top, pilots 2 1/2 turns out. This was at sea level with a stock motor, full yoshi exhaust, K&N w/o airbox, and pretty cool outside temp. There's still some tuning to do but this will get you in the ballpark.


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