my 250x has no top end at all, im going to be rebuilding the topend soon, do you guys thing it could be the cam or something with the valves?
my 250x has no top end at all, im going to be rebuilding the topend soon, do you guys thing it could be the cam or something with the valves?
White 06 YFZ Full HMF
2000 Yamaha Blaster
LRD, UNI, Carbon tech, RAZR, DG, Durablue, twin row carrier,30mm oko, reed spacer, injecter block off....
Stock 1987 250x
any one? it's allmost like its hitting the rev limiter at like 1/2 trottle.
White 06 YFZ Full HMF
2000 Yamaha Blaster
LRD, UNI, Carbon tech, RAZR, DG, Durablue, twin row carrier,30mm oko, reed spacer, injecter block off....
Stock 1987 250x
Could be a valve/cam problem. Also timing chain and tensioner. You may even want to make sure your main jet didn't work loose and fall into the carb bowl.
I am now quadless...
I wouldnt doubt that your cam lobes could be badly worn to where theres not much lift and your rocker arms are worn badly as well,if they are too far gone it wont let the motor rev out.
426ex,lt250r banshee and kfx700 v force,yz250 mx bike
ok, ill check these things out.
White 06 YFZ Full HMF
2000 Yamaha Blaster
LRD, UNI, Carbon tech, RAZR, DG, Durablue, twin row carrier,30mm oko, reed spacer, injecter block off....
Stock 1987 250x
Adjust your valves to .004 while your at it, for more compression.
MY TOYS
406X Honda
Powroll stroker w/ Vesrah shorty rod
ProFab big bore
White Brothers cam
ported & polished head w/ +1 intake
Kibble White HD springs
38mm Keihin-choke removed
full DG RCM exhaust- want X-6
DID silent HD cam chain
K&N filter-No lid
02 Raptor-
High comp 720 kit
Web cam 461/496
K&N filter
Supertrapp exhaust
lowered 1.5"
92 250X-12:1 WIESCO .020/No-Toil filter
03 CBR954 - full 2brothers exhaust
95 Kawasaki Ninja ZX6 streetfighter
93 Honda XR80R
83 Z50R -K&N filter
98 Arctic Cat Cougar 550 liquid
86 Ski-Doo Citation
or increased rocker arm wear
426ex,lt250r banshee and kfx700 v force,yz250 mx bike
That's okay. Those Honda valves will wear a lot faster than the cam and rockers.
MY TOYS
406X Honda
Powroll stroker w/ Vesrah shorty rod
ProFab big bore
White Brothers cam
ported & polished head w/ +1 intake
Kibble White HD springs
38mm Keihin-choke removed
full DG RCM exhaust- want X-6
DID silent HD cam chain
K&N filter-No lid
02 Raptor-
High comp 720 kit
Web cam 461/496
K&N filter
Supertrapp exhaust
lowered 1.5"
92 250X-12:1 WIESCO .020/No-Toil filter
03 CBR954 - full 2brothers exhaust
95 Kawasaki Ninja ZX6 streetfighter
93 Honda XR80R
83 Z50R -K&N filter
98 Arctic Cat Cougar 550 liquid
86 Ski-Doo Citation
my 250x is doing the same took my top end off and my rocker arms n cam were prettyy cooked now in the process of changing them and i neeed help on getting the cam off so if u change your cam let me kno how it goes
Just unbolt the cam gear and the cam will come out.
As far as the rockers you will need to cut notches in the dowel pins, heat the head cover, then pry the pins out (using a screwdriver or cutting pliers on the notches) so that you may take the rocker shafts out. After that the rockers will pretty much fall out for you.
MY TOYS
406X Honda
Powroll stroker w/ Vesrah shorty rod
ProFab big bore
White Brothers cam
ported & polished head w/ +1 intake
Kibble White HD springs
38mm Keihin-choke removed
full DG RCM exhaust- want X-6
DID silent HD cam chain
K&N filter-No lid
02 Raptor-
High comp 720 kit
Web cam 461/496
K&N filter
Supertrapp exhaust
lowered 1.5"
92 250X-12:1 WIESCO .020/No-Toil filter
03 CBR954 - full 2brothers exhaust
95 Kawasaki Ninja ZX6 streetfighter
93 Honda XR80R
83 Z50R -K&N filter
98 Arctic Cat Cougar 550 liquid
86 Ski-Doo Citation