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GEN 3 CR 125...WHICH MOTOR?
Posted: May 7th, 2008, 6:54 pm
by husky24tn
I HAVE A COMPLETE CR 125 2003
and today i had a friend give me one of his backup frames....its also a 2003 cr 125
so i have a donor frame now and i'm looking for a good engine
i would like one of the toned down late 90's models if anyone knows where a good deal is
i'm seriously wanting to do this frame into a 500 a/f
frame i got today
PS.....i have read alot of you guys builds and all of you do great work......
what kind of kits are available now?.....
thanks in advance for any info....
Mitch
Posted: May 7th, 2008, 8:00 pm
by nmdesertrider
Any particular reason for the 125 frame? If it just fell in your lap and you want to do a conversion I would pick something easier.
Posted: May 7th, 2008, 8:06 pm
by husky24tn
well i have it here
and i also have a full 125 of the same year
so i could mate the rest of the parts to this donor frame

Posted: May 7th, 2008, 8:14 pm
by nmdesertrider
That's a pretty good reason.
The motors are basically the same, and even a 01 is seven years old now and should be completely gone through.
I would just find one that's in good shape and go from there.
Posted: May 7th, 2008, 8:36 pm
by AlisoBob
94' and later
Best tranny ratios and clutch.
Posted: May 7th, 2008, 9:30 pm
by 100hp honda
AlisoBob wrote:94' and later
Best tranny ratios
thats a big matter of opinion. the later ratios sucks ass real bad if you ask me

. try and ride early and later years if you can to see what you like better
Posted: May 8th, 2008, 7:45 am
by AlisoBob
You must like ridin' @ 45mph Clyde....

Posted: May 8th, 2008, 8:10 am
by teemtrubble
90 and up but, if you have concerns about the trans ratio 94 and up.
Posted: May 8th, 2008, 8:35 am
by dannygraves
'93 was the tranny change, '94 is when the cases went to a bare color instead of black. I prefer the bare cast color.
Posted: May 11th, 2008, 12:24 pm
by husky24tn
i was thinking i wanted a later 90's model
wasn't sure when the ratio change was
i plan on racing this after its completed so iw ant a good engine for motocross....
i don't do alot of woods riding....
i want one thats smooth and alot less abrupt than the earlier models
Posted: May 11th, 2008, 8:28 pm
by dannygraves
for MX te close ratio would be better. '88 and '89 were nasty SOBs, so I say look for a '90-'92
Posted: May 13th, 2008, 8:23 pm
by husky24tn
yeah...my dad had an old 89 and it was a beast...
i'd like a little more mellow hit .....i am only 145 lbs...but i do ride the local "A" class also....
i love the idea of a good 500 motor in that frame i have....i can't wait to find a motor and get it started