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Flit250 Started a new thread Yz250 crank bearing seized
2/21/2014 7:35am Hi I ride a yamaha yz250 2008 model and I have had the left side crank bearing seized on me twice with only an hours ride each time, does anyone know why this is happening? The only thing I can think is my carb settings are out and it wants dropping down a peg so it's getting more fuel then...
This forum thread has 7 replies.
Flit250 Added a reply to Yz250 crank bearing seized
2/21/2014 7:35am Yes that's what I usually do is freeze the the bearings and heat the case up with a blow torch any they just drop straight in with no messing about with presses or hammers.
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Flit250 Added a reply to Yz250 crank bearing seized
2/18/2014 12:26pm Cheers guys thanks for the advice! Anything else I should check before I put her beck together? I will let you all know the outcome when I rebuild it on Saturday and ride Sunday. Cheers.
Flit250 Started a new thread Yz250 losing power on low revs
12/21/2013 11:59am Hi all I have just bought some Boycen pro series reeds for my yz250 2008 model. I. Took it for a blast yesterday and on the first session the bike was absolutely fine with tones of power however on the second ride as soon as the bike got warmed up it lost all power but only on low revs. If...
This forum thread has 10 replies.
Flit250 Added a reply to Yz250 losing power on low revs
12/18/2013 12:06pm I have also just done a full engine rebuild with brand new barrel crank piston ect but it ran fine, then after I new it was working great I decided to put pro series Boycen reeds in and now it's not. The problem only happens when the bike is hot so I'm going to clean the power value and take...
Flit250 Added a reply to Yz250 losing power on low revs
12/18/2013 11:34am Yes I have tried that, exactly what you said Boycen recommended to do but the bike smoked a hell of a lot, it ran as smooth as ever when rode on the track but once you pull up and no revs are on it just choaked up and bellowed smoke out. As soon as you open the throttle it clears...
Flit250 Added a reply to Yz250 losing power on low revs
12/18/2013 8:25am Yes I changed the jetting to what was recommended by Boycen but all that did was make it smoke like hell on tickover so I changed it back to standard. The bike had no problems first session out then second time out it happened when the bike got warmed up and same again on every other ride.
Flit250 Added a reply to Yz250 losing power on low revs
12/18/2013 1:43am Thanks for the advice guys I will check both. Many thanks.
Flit250 Added a reply to pipe cleanup tricks
11/10/2013 11:36am If you want to bring back that nice new factory chrome look back try useing autosol polish, I have a fmf fatty and I use it on mine all the time and it works great!
Flit250 Started a new thread Yz250 cutting out
10/6/2013 6:22am Hi there I have recently just done a full engine rebuild on my 08 Yamaha yz250. I took it out last week and run it in with no faults whatsoever, however I took it for a spin today and the first session the bike ran really smoothly with tones of power and faster than ever but on the second session...
This forum thread has 1 reply.
Flit250 Started a new thread Yz250 running in
9/28/2013 4:11pm Hi there I'm just wondering how long it takes to run a bike in, I have just done a full engine rebuild and would like to know how long it will take before I can start thashing her again? Cheers.
This forum thread has 3 replies.
Flit250 Added a reply to Gummy Glue
9/1/2013 11:06pm Best thing is petrol that will shift it
Flit250 Added a reply to Repacking a 2 stroke silence - Is it a bad idea to use Duct Tape?
9/1/2013 10:55pm Do not use masking tape or duck tape as both of these will set on fire, buy some fiberglass wadding its very cheap and the right stuff for the job.
Flit250 Added a reply to Yz250 cylinder
9/1/2013 2:52pm The little beauty 
Flit250 Started a new thread Yz250 cylinder
9/1/2013 2:52pm Hi there I ride a yamaha yz250 2008 model and it just recently popped.... I have had to buy a new barrel as it completely destroyed it, have any of you guys got any idea why this happens? I have done about 80 hours since the piston was changed and I had to split the engine to get all the...
This forum thread has 11 replies.
Flit250 Added a reply to Yz250 cylinder
9/1/2013 2:39pm Cheers kijen I will check it out, I have seen a lot of issues with power valve tabs braking off on mx forums but why does this happen if its under no stress what so ever why should it break...?
Flit250 Added a reply to Yz250 cylinder
9/1/2013 7:43am Damm... I don't know if its best taking the new wiseco crank out then and installing it with oem parts what do think is best? Another question my top piece of the power valve has broken off but i have been told this is not a problem as it just stops the spring from popping out but even when you...
Flit250 Added a reply to Yz250 cylinder
9/1/2013 2:24am Thanks for your comments guys, are wisico really that bad? I thought wisico is a good make? The yam had hot rod a hot rod crank when it went and I was told theses where bad, looks like some one has been telling me a load of crap then.
Flit250 Added a reply to Yz250 cylinder
8/31/2013 2:27pm
Ready for power valve to be reinstalled in to new cylinder.