my bike only goes about 60mph indicated and wont do anything in sixth gear! ive to my knowledge derestriced it as far as i can! i believe is a 2002 engine and loom.
i have isolated the reed switch put an older air manifold on it and have a dep system
I had an identical problem, but mine would only do 40MPH and bog down in 6th and stall.
DEP silencer? Take the Phillip screws out and pull the end off, take the sound wadding and baffle / pipe thing out, put screws back in, take for a ride, any different? It'll be louder, but the speed will improve if its the exhaust needing to be repacked.
Furthermore, if the problem continues, pull the exhaust off, look up the exhaust port, get someone to flick the ignition on and off so you can see the piston condition. Check if its scored etc.
If you have a different engine to the standard one, you don't know how many hours or mileage the engine has actually done. I'd suggest full rebuild if the engine has been swapped.
Lol. How do you justify a full engine rebuild. Go until it pops is my advice. But before that i agree. Have a look up the exhaust port. Any sort of scoring or damage then it will need a rebore and new piston. Shouldn't cost you too much. Check the bottom end whilst its off but unless top emd engine failure has occurred then you really shouldn't need a FUL rebuild.
Lol. How do you justify a full engine rebuild. Go until it pops is my advice. But before that i agree. Have a look up the exhaust port. Any sort of scoring or damage then it will need a rebore and new piston. Shouldn't cost you too much. Check the bottom end whilst its off but unless top emd engine failure has occurred then you really shouldn't need a FUL rebuild.
The engines been swapped and its had a new loom from a later model. So perhaps it has gone bang before and they'd just rebored and put a new piston on it? You'll never know.
Could be a carbon build up on the exhaust port, definitely take the exhaust off and look.
BTW, if exhaust is full of carbon, check the oil pump is setup correctly. Usually carbon builds up could be due to the oil bump being setup incorrectly. Worth checking out.
with no packing in the silencer wil alter all the back pressure so it wont run right any way, should re pack the silencer every few thousand miles any way, iv used loft insulation for the past 10 years works fine and its free out the attic....makes a big difference in how the bike runs, but something big is up if its running like that, do a compression test on the engine first of all, then check all carb settings to manual spec, what gearing is on the bike has some 1 swapped the rear sprocket for a daft size as this can also make the bike labour and have daft running speeds
check reeds
clogged airfilter
fuel oil ratio
all the faultdiagnosis is in the manuals to go thru as a check list
all else fails id be having it in bits rebuilding and startin from fresh
with no packing in the silencer wil alter all the back pressure so it wont run right any way, should re pack the silencer every few thousand miles any way, iv used loft insulation for the past 10 years works fine and its free out the attic....makes a big difference in how the bike runs, but something big is up if its running like that, do a compression test on the engine first of all, then check all carb settings to manual spec, what gearing is on the bike has some 1 swapped the rear sprocket for a daft size as this can also make the bike labour and have daft running speeds
check reeds
clogged airfilter
fuel oil ratio
all the faultdiagnosis is in the manuals to go thru as a check list
all else fails id be having it in bits rebuilding and startin from fresh
Mine tops out at 50MPH. Does the rear sprocket have what size it is written on it? So I can find out? The air filter and reeds are fine. And I've just done a top end rebuild. I'm going to see about setting the oil pump up properly, hopefully that'll fix my speed problems and the carbon on the exhaust port.
Bikes currently in bits undergoing a clean up, getting rid of the rust and spraying it black again, and cleaning all the parts up, engine etc.
thanks for the replys guys idk my speedos massively wrong, had the gps on on my phone clocks said top speed of 65 gps said 75 tryed it at 30 and and gps said just over 30 eh the bores fine one of the first things i checked and should be on any 2t tbh!
