Raptor Stock Jetting Specs???

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Jun 12, 2019 | 06:12 PM

#21

David Moody

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Joined: Jun 2019

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From: pelitier n.c. by the ocean

sixsixt,"05 660/719,,stroked, bbk,stage 3 hc sparks bigcore proform airfilter open airbox...160/165 mains,27.5 pilots, 21/2 turns on air screws .needle in bottom clip. problem is busting out in wot,a little backfire after reving. ran great before adding proform airfilter.changed mains from 150/170 now runs like crap. can you help me? thanks for your time and knowledge.........., david moody.first bike i ever built. pm me at moody2558@gmail.com and thanks again

Last edited by David Moody; Jun 12, 2019 at 06:18 PM. Reason: adding more.

Jun 17, 2019 | 07:41 PM

#22

Black660r

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Joined: Jun 2019

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Quote:

Originally Posted by sixsixT

You left out the pilot jet numbers there slick. Better go back and hit the books.[img]i/expressions/face-icon-small-happy.gif

From what I've seen from Yamaha mechanics they don't get much training on how to work on a raptor either.LOL

So I have a problem I changed all of the Jets back to stock because I was having popping and backfiring now I still have a little backfiring and can get to a higher Rev but don't know what to do now

Jun 17, 2019 | 08:00 PM

#23

Black660r

Weekend Warrior

Joined: Jun 2019

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2002 660 raptor

So I have a problem I changed all of the Jets back to stock because I was having popping and backfiring now I still have a little backfiring and can get to a higher Rev but don't know what to do now