250r trx motor or atc

[350x 250r]

im looking at a 89 trx motor for my 250r. and was wondering what the differences between the two.ive heard the trans gears are different but i dont know if its for the better or worse. if any one can help that would be great:Bounce

[3leggeddog]

i think the only difference is the 88-89 are a long rod motor,and use a different stlye intake casting.as far as i know everything els different is really minor,and mainly changed in between 85-86

[dizasterzrfun69]

the 89's are supposed to have the best clutch setup out of them all.

[350x 250r]

well i have a 86 atc motor in it now what is the differents between the 85 and the trx 89.

[3leggeddog]

quit a bit.the long rod,the kicker bushings,the clutch basket,the cylinder,the stator cover,i think heavier flywheel,rear engine mounting,thats all i can think of

[350x 250r]

o i thought all the mount where the same. do u know what ill have to do to get it to fit in a 86 atv

[3leggeddog]

the later model motors are just missing the top rear engine boss.you know how the atc has 2 bolts back there by the swinger?well the later trx use a solid swinger.you can still use it,you will just have an extra engine bolt laying around

[350x 250r]

good thanks. so in your opinion does the 89 trx motor performs better then the 86 atc.

[3leggeddog]

i don't know honestly.never had enough seat time on a 89 motor to know the difference.i like my combo though.i put the 88-89 rod in my 85 motor,with a esr spacer plate.you could always got that route.buy a new 88-89 hot rods crank,the 88-89 cylinder,and through it on your motor.would be the same thing really!

[350x 250r]

my old motor is well bad off.the clutch arm leeks out the top.need new clutches.drane pluge is stripped.the trans needs new bearing and seals.of corse the case saver bolts r busted. needs new top end soon.jb weld on the cases.well any ways the last owner bet it up pritty good.so i think it time to get a new one it alot less money to get a motor off ebay than fix the one i got.pluse i got alot of goody for it pt pipe /38 air striker/boyen reeds and a few others

[350x 250r]

its 850$ with shipping

[3leggeddog]

awesome,well good luck.no matter what year you buy,it will fit!

[350x 250r]

thanks for every thing. ride hard man

[3leggeddog]

o i will!!!!!!!!!!!!!!!