Austin 3:16 Posted May 17, 2020 Report Posted May 17, 2020 Okay I just rebuilt my engine New crank,New pistons etc. Installed Vforce 4 reeds and timing +4 it also has fmf gold series which where on it before rebuild. Is idling fine and runs fine until it get to a certain spot and just won’t go any faster it’s no where near as fast as it was. I’ve tried making less and more rich with no change,Gave it more and less air and still no change. Carbs are so clean you could eat off them. I’m at a loss onto what to try. Could I need to rejet my carb because of the reeds or is it something else. Any help is greatly appreciated. Thanks Quote
Austin 3:16 Posted May 17, 2020 Author Report Posted May 17, 2020 27 minutes ago, n2otoofast4u said: What carbs, what jets? Stock carbs, 280 Mains,25 pilot. Will add it’s hard to start cold Quote
hoppedupandcutdown Posted May 17, 2020 Report Posted May 17, 2020 Slides in the correct carbs? Bowls on the correct carbs? Quote
Austin 3:16 Posted May 17, 2020 Author Report Posted May 17, 2020 18 minutes ago, hoppedupandcutdown said: Slides in the correct carbs? Bowls on the correct carbs? Slides don’t have a certain carb they mate with do they? I’m for certain I have them in right in that carb their in thought it only matters if their in right in the carbs. Quote
Austin 3:16 Posted May 17, 2020 Author Report Posted May 17, 2020 34 minutes ago, hoppedupandcutdown said: Slides in the correct carbs? Bowls on the correct carbs? I have the bbs or whatever their called lined up for both sight classes and the notches for each idler screw Quote
hoppedupandcutdown Posted May 17, 2020 Report Posted May 17, 2020 1 hour ago, Austin 3:16 said: I have the bbs or whatever their called lined up for both sight classes and the notches for each idler screw Slides are correct then. Quote
gusto Posted May 17, 2020 Report Posted May 17, 2020 Put in a 30 pilot, adjust air screw and report back Quote
Austin 3:16 Posted May 17, 2020 Author Report Posted May 17, 2020 9 minutes ago, hoppedupandcutdown said: Slides are correct then. Okay thanks just wanted to make sure tho Quote
Austin 3:16 Posted May 17, 2020 Author Report Posted May 17, 2020 7 minutes ago, gusto said: Put in a 30 pilot, adjust air screw and report back Mains and pilots where my next step. Checked the ignition coil and ohm was .9 which I way over the .2-.4 range so possibly is some of my problem also Quote
Toybreaker Posted May 18, 2020 Report Posted May 18, 2020 Ok read this, and next read this again After you understand this buy 260-320 mains (if you have the jets great) 27.5-32.5 pilots Get a longer aftermarket needle set (i like the toomey needles) I have a similar set up to yours, My bike likes 280 main 27.5 pilot with the needle 2 slots from the tip. Buy 10 sets of plugs. change jets to your "baseline" and do a plug chop. post pictures of the resulting plug for review (and the inevitable peanut gallery comments) Quote
Austin 3:16 Posted May 18, 2020 Author Report Posted May 18, 2020 5 minutes ago, Toybreaker said: Ok read this, and next read this again After you understand this buy 260-320 mains (if you have the jets great) 27.5-32.5 pilots Get a longer aftermarket needle set (i like the toomey needles) I have a similar set up to yours, My bike likes 280 main 27.5 pilot with the needle 2 slots from the tip. Buy 10 sets of plugs. change jets to your "baseline" and do a plug chop. post pictures of the resulting plug for review (and the inevitable peanut gallery comments) Okay thanks for the info will let ya know what happens Quote
Austin 3:16 Posted May 18, 2020 Author Report Posted May 18, 2020 7 minutes ago, Toybreaker said: Ok read this, and next read this again After you understand this buy 260-320 mains (if you have the jets great) 27.5-32.5 pilots Get a longer aftermarket needle set (i like the toomey needles) I have a similar set up to yours, My bike likes 280 main 27.5 pilot with the needle 2 slots from the tip. Buy 10 sets of plugs. change jets to your "baseline" and do a plug chop. post pictures of the resulting plug for review (and the inevitable peanut gallery comments) Beat place to order the pilots? Quote
Toybreaker Posted May 18, 2020 Report Posted May 18, 2020 Lots of options, use one of the sponsored vendors on the website here. Quote
Austin 3:16 Posted May 30, 2020 Author Report Posted May 30, 2020 On 5/18/2020 at 8:08 AM, Toybreaker said: Lots of options, use one of the sponsored vendors on the website here. Still doing it and also changed coil and moved timing back down Quote
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