Uf21 Posted February 16, 2013 Report Share Posted February 16, 2013 I am about to buy a set of vforce 4's. Will I need to re-jet once installed? If so do I go up or down a size? On a side note, I cant test the jetting/dp a plug chop myself since I live near the city and cant ride anywhere near my place. All I know about my jetting is its a 280 main and a 27.5 pilot. Quote Link to comment Share on other sites More sharing options...
250rbanshee Posted February 16, 2013 Report Share Posted February 16, 2013 From what I've read you usually need to go up 1 size on the pilot jet. I think you'll be ok on the mains. 1 Quote Link to comment Share on other sites More sharing options...
Nightmare Posted February 16, 2013 Report Share Posted February 16, 2013 Yup, bump the pilot one size and go Sent from my SGH-T679 using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
Uf21 Posted February 16, 2013 Author Report Share Posted February 16, 2013 Ok thanks Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 17, 2013 Report Share Posted February 17, 2013 I will also confirm that it will need 1 up on pilot. Been there and done that. Quote Link to comment Share on other sites More sharing options...
06BCBANSHEE Posted February 17, 2013 Report Share Posted February 17, 2013 I have 280 mains 30 pilot. was really boggy at low throttle. put 27.5 in and it runs much better and smoother. the 280 and 30 pilot where already in there from the previous owner. When I ordered the Vforce 4 I ordered a set of 27.5 and 32.5 just in case. It def runs alot better with the 27.5 im at sea level too Quote Link to comment Share on other sites More sharing options...
Uf21 Posted February 17, 2013 Author Report Share Posted February 17, 2013 I will also confirm that it will need 1 up on pilot. Been there and done that. Thanks I have 280 mains 30 pilot. was really boggy at low throttle. put 27.5 in and it runs much better and smoother. the 280 and 30 pilot where already in there from the previous owner. When I ordered the Vforce 4 I ordered a set of 27.5 and 32.5 just in case. It def runs alot better with the 27.5 im at sea level too The thing is im 3000-4000ft above sea level. Dont know how much of a difference that makes on jets?? Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted February 17, 2013 Report Share Posted February 17, 2013 If you were jetted correctly before.....you will need to be one size larger on your pilot after switching to V4's. Regardless of elevation. That's why I say "If you were jetted correctly". Now if your jetting is way off now....like jetted fat. You might be fine. But if your bike was dialed in and running good. Go up one pilot size. Quote Link to comment Share on other sites More sharing options...
Nieskes Posted February 17, 2013 Report Share Posted February 17, 2013 So, go up 2 sizes on the pilot? Errrrr what? Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted February 18, 2013 Report Share Posted February 18, 2013 So, go up 2 sizes on the pilot? Errrrr what? No YOU can go 2 sizes smaller....cause you are fat! Quote Link to comment Share on other sites More sharing options...
Nieskes Posted February 18, 2013 Report Share Posted February 18, 2013 Ahhhh ok thanks for clearing that up. 3 sizes bigger, sounds good. Quote Link to comment Share on other sites More sharing options...
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