Chrome polished 87 r cylinder

[GetHigh250r]

i have a polished 87 cylinder for sale...it comes with a polished stock head and 80 over piston kit...ready to bolt on and go...has mild porting done to it...i can supply more detailed pics if interested...thanks....

make offer...im building a crf

[330EXman]

i cant remember will a 87 cylnder work on a 86 stock stroke or would i need a long rod kit for it? if it will work consider it sold

[Brad]

i think 86 anfd 87 have the short rod design and the 88 and 89 have the long rod design so i think this would work for an 86

[CHAUNCY]

Originally posted by Brad
i think 86 anfd 87 have the short rod design and the 88 and 89 have the long rod design so i think this would work for an 86

Nope, 85 and 86 have short rod. 87-89 has a longer rod.

[Brad]

Originally posted by CHAUNCY
Nope, 85 and 86 have short rod. 87-89 has a longer rod.

:eek2: i didnt know they made an 85

[CHAUNCY]

Originally posted by Brad
:eek2: i didnt know they made an 85

The top end in the 85 atc was the same as the 86 trx....I am almost positive. To answer your question 330ex....Yes you would need a 87-89 legnth rod.

[330EXman]

thanks chauncy i am a exsperienced engine builder i was just having a massive brain cramp really bad all night thanks though after i wrote that i though about ti and realized it was a long rod top end

[CHAUNCY]

Originally posted by 330EXman
thanks chauncy i am a exsperienced engine builder i was just having a massive brain cramp really bad all night thanks though after i wrote that i though about ti and realized it was a long rod top end

no problem. Glad to help out:cool: Good luck with the CRF gethigh:)

[tants]

thats a nice looking cylinder...


good luck selling gethigh



BUMP :)

[GetHigh250r]

hey everyone is wrong...that cylinder works with an 86 bottom end...if u have an 88-89 i also have a spacer plate for sale

ok here it is just to clear it up:
86 short rod...half moon piston(on bottom)
87 short rod window piston
88-89 long rod window piston


300ex u want it?

[GetHigh250r]

Originally posted by CHAUNCY
The top end in the 85 atc was the same as the 86 trx....I am almost positive. To answer your question 330ex....Yes you would need a 87-89 legnth rod.


an 87 cylinder will work with an 86 piston and an 86 bottom end

[CHAUNCY]

Originally posted by GetHigh250r
an 87 cylinder will work with an 86 piston and an 86 bottom end But wouldnt you still need a longer rod because 87-89 had the longer rods and 86 had a shorter rod ?

[methyman]

You wouldn't need a longer rod. The short rod (85-86) motor rod with 85-86 piston will work on with no need for a spacer plate for the cylinder. The 86 style piston can be run with 87-89 motor using a spacer plate so you can bore the cylinder to .120 over. You can use any style of cylinder on 86-89 motor its just the difference in the intake and exhaust ports being different.

87-89 motor have long rod, pistons only made up to .080
85-86 motor short rod, pistons only made to .120
So many people run the 87-89 motors with 85-86 style piston for more bores and the only thing the need extra is a spacer plate to compensate for the longer piston used in the 85-86 . I hope that helped you guys under stand a little about the TRX250R motors.


Lata

Matthew

[GetHigh250r]

ok i am sorry...its an 87 cylinder with an 86 head and piston...i am 100% this setupp works

[CHAUNCY]

Thanks for clearing that up methyman;)