Gp100 Not pulling beyond 6000rpm

[rob_250rsa]

Hi. Just finished putting the gp100 back together from a rebore and new oversize piston. Took it for a quick ride and all is well apart from it won't pull much past 6000rpm, but it pulls really nicely up to that. I know you shouldn't rev it hard after a rebore but I was just testing it! Any ideas what this could be? Cheers
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1987 Honda C50 LA-G (rare fully auto), 1996 Honda C90, 1994 Honda CG125 (stripped - now has crankcase full of water) 1981 Honda CB250rs-a, soon a gp100 to restore! ----> None have electric start!! I'm going to have the strongest right leg ever!

[rob_250rsa]

Oops its ok now, was the fact that it was running ridiculously rich on oil due to the vast amount I put in the tank when I rebuilt it (oil pump needed bleeding) fresh tank of petrol and all is well. Went for another test ride, all was good except the bloody baffle fell out!! Was riding around with this stupidly loud bike with everyone staring lol
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1987 Honda C50 LA-G (rare fully auto), 1996 Honda C90, 1994 Honda CG125 (stripped - now has crankcase full of water) 1981 Honda CB250rs-a, soon a gp100 to restore! ----> None have electric start!! I'm going to have the strongest right leg ever!

[hmmmnz]

excellent
brilliant bikes
i had one and his bro the a100 as well
where are the pics, so i can reminisce
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[rob_250rsa]

Haha, just went for yet another ride and I cant wipe the smile off my face! Just as much fun as my cb250!! Just got a months insurance so Im going to ride it as much as possible! When I got it, it needed a rebore. Got a freshly rebored 1.0mm oversize barrel, piston and head (even gaskets) for £30!! here they are:

https://i200.photobucket.com/albums/aa62/Rob321_2007/DSC00218-1.jpg?t=1208185929

https://i200.photobucket.com/albums/aa62/Rob321_2007/DSC00219.jpg?t=1208185966

Not bad for £80 eh?

https://i200.photobucket.com/albums/aa62/Rob321_2007/DSC00220.jpg?t=1208185997

https://i200.photobucket.com/albums/aa62/Rob321_2007/DSC00221.jpg?t=1208186014

I had to amputate the fingers off the mirror because I felt like such a nob!!

https://i200.photobucket.com/albums/aa62/Rob321_2007/DSC00222.jpg?t=1208186073


Unfortunately it still doesn't run too well. In 1st and 2nd it goes really well, but in 3rd and so on it seems to really lack power no matter where the revs are. She wont go past 60 without a real push. Any ideas to what this could be?
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1987 Honda C50 LA-G (rare fully auto), 1996 Honda C90, 1994 Honda CG125 (stripped - now has crankcase full of water) 1981 Honda CB250rs-a, soon a gp100 to restore! ----> None have electric start!! I'm going to have the strongest right leg ever!

[hmmmnz]

looking good, its going back 10 years since i had one.
may be something to do with the rotary valve ??
or may be the points, i can't remember if there was a advancer on the wee smokey
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[rob_250rsa]

I've checked the points properly (I think). I thought the disc valve was un-adjustable?
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1987 Honda C50 LA-G (rare fully auto), 1996 Honda C90, 1994 Honda CG125 (stripped - now has crankcase full of water) 1981 Honda CB250rs-a, soon a gp100 to restore! ----> None have electric start!! I'm going to have the strongest right leg ever!

[Blau Zedong]

Have you decoked the silencer????? A session on the old caustic soda might help. Lovely little bikes, I had an A100 which was tough as old boots. Can't see it being the disc valve unless you've had it apart and refitted it incorrectly.
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18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth