81 250r help

[81250r]

hope someone out there can help me.I have an 81 250r it has rear drum brakes will an 82-84 swing arm work if i change the shock?this is the start of a rebuild.if not than what swing arm will work,i am going to extend the swing arm that works at least 3"thanks for any help.

[RideRed250R]

no it will not. you must convert over to disc breaks as well, you are limited to only a 82 swinger. 83-84 used a totally different frame and shock geometry. you can change the shock, rear link, drum and all that to work as a 82 rear end, which has discs
adam

[200xman]

You can't use the 82 swingarm on a 81 frame unless you want to try to make up brackets to hold the master cylinder and resivour.

[81250r]

what i am looking for is to replace the hole rear end to have dick brakes.if everthing would work i would change the shock.

[350x'inNY]

Well.... I don't think the shocks different, but you will have to use a 82R complete rear end, then find a way to mount up the resevoir and master cylinder for the rear brakes. Different swinger, axle and complete brake mechanism.

[81250r]

i can make modifications would a swingarm from an 83-84 work?

[350x'inNY]

no it will not. you must convert over to disc breaks as well, you are limited to only a 82 swinger. 83-84 used a totally different frame and shock geometry. you can change the shock, rear link, drum and all that to work as a 82 rear end, which has discs
adam

Already been answered...... a 83/84R rear end will NOT fit on a 81 or 82R.

[81250r]

what stops a 83-84 from fitting?

[350x'inNY]

Swing arm pivot bolt.... shock mounts..... geometry (Gee I'm a tree) is completely different. Try it if you want... let me know how it goes... :p