can you put a 450r stock cam in a 400ex?
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Senior Member
can you put a 450r stock cam in a 400ex?
ride it like you stole it
2004 honda 400ex
k&n air filter
itp tires and rims all around
works tripple rate shocks
pro taper bars
dyno jet kit... 165 main
troy graphics kit
stage 2 hot cam
crf450 cam chain
lexx pipe
Senior Member
no
Wiseco 11:1 87mm piston,stage 2 hotcam, mild port and polish,shaved head, pro x cam chain, dynojet 146 main 40 pilot, removed airbox lid outwears air box lid cover, scorpion slipon exhaust.+3 timing key runnin 100 avgas mix
Registered User
x2, xr cams work, but just toss a hotcam in there, or an hrc xr cam, but i think those are similar to a stg 2 hc
full blown addict!!!!!!
what would be good about an xr cam? arent they the same? every motor component that i buy pretty much is for xr400 or 400ex. well i guess its a dirtbike its prolly got a more radical cut to it than stock ex because it wont need as much torque because of less weight, but makes more power up top? something like that even close? or am i way off?
2007 Suzuki LT-R450
Sparks X6 big core exhaust
yoshimura cherry bomb
K&N air filter with outerwears/no lid
blingstar victory bumper
quad tech seat cover
ccp steering stabilizer
burguard +1 anti vibe stem
g force racing axle
tusk nerfs with alum. heel guard
UM Racing skid plates
22" front/20" rear kenda klaw xc
g force xc wheels.
Maxxis razor blade paddles
Registered User
The xr cam is just slightly more radical that the ex stocker , and was one of the first upgrades for the ex , along with switching to the thinner xr headgasket to slightly boost compression.
I just threw a hotcam stage2 in mine.
full blown addict!!!!!!
me too a stg 2 cam is quite a bit more radical cut than stock and showed a real nice gain in power. xr head gaskets are thinner? i have a cometic gasget kit i got a week ago thats labeled as xr400 or 400ex gaskets. are you talking stock gasket is thinner?
2007 Suzuki LT-R450
Sparks X6 big core exhaust
yoshimura cherry bomb
K&N air filter with outerwears/no lid
blingstar victory bumper
quad tech seat cover
ccp steering stabilizer
burguard +1 anti vibe stem
g force racing axle
tusk nerfs with alum. heel guard
UM Racing skid plates
22" front/20" rear kenda klaw xc
g force xc wheels.
Maxxis razor blade paddles
Registered User
yeah , the stock xr400 headgasket is thinner than the stock ex , resulting in a slightly higher compression ratio ( ie....... if the stock compression ratio was 9:1 going with the xr400 gasket should result in 9.5:1 compression by all reports). The gasket sets would be the same except for the headgaskets.
I recomend looking in the tech archives here , there is a wealth of knowledge that would serve you well.
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