Yamaha Discussions about Yamaha ATVs.

Jetting for Raptor Big Gun Slip-on??

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Old Dec 18, 2000 | 04:15 PM
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RaPtOrRiDr01's Avatar
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Does anyone know what the jetting change should be?? I need some help and want a close guess to what the jetting should be on it.
 
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Old Dec 18, 2000 | 04:20 PM
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garyc660R's Avatar
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I contacted Big Gun previously, and for the FULL exhaust, they recommend going to:
27.5 on both pilots
150 for the left carb
155 for the right carb

Go to Biggunexhaust.com and get their phone #. Than give those guys a call for exact jetting requirements for your set-up.
 
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Old Dec 18, 2000 | 05:19 PM
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I have the full exhaust however I only put the slip-on on because my repair man doesn't have the jets and I heard that you don't need jets for the slip-on.
 
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Old Dec 18, 2000 | 06:00 PM
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Thanks for the reply's but i ended up jus calling Big Gun not even a minute ago and talked to Paul. "He said some people had to rejet and some did not have to. He said to look at the plug before and after you install it and run it to see any change in color. And also run it hard to find any skips or misses throughout the rpm range. Most likely there is not jetting change for just the slipon." Hmm nice guy to talk to, I wil let everyone know how it turns out I will be getting my pipe tomorrow but will not install it till the weekend since it is a christmas gift .

01' Raptor---Big Gun Slip-On, Prm Engine Skid
00' Warrior---SuperTrapp pipe, Dg nerfs, Uni Airfilter, Hitch, Blackwater tires, smaller c/s sproket
00' Wolverine---All Stock except for a few tire patches
 
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Old Dec 19, 2000 | 10:55 AM
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Ya, he definately is one of the better, nicer people to work with. He lets you know what's up!!!
 
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