01redrocket Posted August 17, 2015 Report Share Posted August 17, 2015 Hi guys, I'm a long time reader on this forum... been a great resource and truly appreciate everyone that helps out. To start off, I just got done doing a fresh bore, new pistons, different carbs, different head. The head I traded my stock one for, it's a stock head thats been shaved but I have no idea how much. I put all this together and it starts right up, and anything under half throttle it runs like a top. But right when I go past half throttle it's a straight bog. Anything past half it bogs, like a switch. It's bad My bike has the following. Fmf gnarly pipes Vf3 reeds Keihin pwk 28 flat slide carbs K&n pods with outerwear Stock crank as far as I know Am at roughly 200 feet above sea level I run non-ethanol premium fuel 92 with torco gp7 mixed at 4 ounces a gallon. I tried jetting it all day yesterday had no luck. I had a 50 pilot in it and had mains all the way from 152 to 162 and I noticed no difference in the bog going through each one. I did notice it ran a little better when I pulled both the chokes and pinned the throttle through the gears. Any help or suggestions are highly appreciated, I'm kinda stuck where I'm at. Gonna very throughly clean the carbs tomorrow morning and do a leak down test if I can get the parts together to do it. I would also love to do a compression test to see if I need higher octane gas but I don't have access to a good one, I have a harbor freight one says I have 120lbs in each and the autozone rental says 110 in each.... I feel there's more than that in it when I kick it. But who knows Thanks again guys!!! Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted August 17, 2015 Report Share Posted August 17, 2015 (edited) Really should do a leak test after assembly and before startup. Pulling choke told you that you are lean, but you didn't listen. Edited August 17, 2015 by Larry's Shee Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted August 17, 2015 Report Share Posted August 17, 2015 Do s leakdown and save your build. Get back with results, Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 Ok, so I'll need to check the reeds, then I'll do my leak down test and see how that goes. What do you mean I didn't listen that it's too lean Larry's shee? It's such a dead bog it must be so lean or so rich.. I put the biggest main I had in it and it didn't even effect the bog. I'm thinking it has a bigger problem but I'm not sure, still kinda learning this stuff. Talked with a few guys down here and they're saying to put 146 main and a 42 pilot and go up from there. I dunno, I'll do the leak down test and see what's up. Thanks for the replies!!! Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 I'm not sure, I stripped my flywheel puller tool last time I tried to pop it off. So I'll need to go get another one of those to get it off.... it's on there good. Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 But it's an adjustable plate, set at +3 Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 It doesn't pop it pretty much sounds like you hit the kill switch, but you can tell it's still running. Barely makes any power up there it just keeps going at the same speed as it bogs. Doesn't gain in speed at all after half throttle, before half it rips good. But right after its no good.... Thanks for the help man really appreciate it. Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
twittle Posted August 17, 2015 Report Share Posted August 17, 2015 Are the carbs new or used? If used do you know for sure they are in good working condition. Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 They were used, and I've never seen them run on a bike. So I'm not sure. Is there anything I should specifically pay special attention to on or inside of them? Thanks. Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 So did the leak down test. It's dropped maybe 1 psi in 6 min, I pumped it up to 6 lbs..... and so far it's holding steady at right under 6 psi. So that means I'm good right? Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 Got the bike running and let it warm up a little. Then took it down the street. The bog is now more of a top end hesitation. All I did was Clean the carbs, put B8es plugs in it instead of the br7es I had, checked the reeds and do the leak down test. It seems to run better but still has a hesitation when pinned. I have a video, if anyone wants me to post it I will. Thanks. Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
F.T.W. Banshee Posted August 17, 2015 Report Share Posted August 17, 2015 How's the wires and caps? Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 17, 2015 Author Report Share Posted August 17, 2015 I think it may be the stator ? I compared the ohm readings to another post here on bhq and it's not testing out good. I have a buddy picking a shee up tomorrow and imma take the parts off his to diagnose mine. I'll keep you posted. Thanks!! Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
01redrocket Posted August 20, 2015 Author Report Share Posted August 20, 2015 Just in case anyone was wondering it was the stator. Put another one on it and it rips, bogg is gone. Thanks for the help. Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
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