1981 250r and a 1984 250r

[hotroddal]

will a 1981 250r engine bolt in the frame of a 1984 250r and if so, do i have to use the 81 wiring harness with it or does that interchange also??

[raptor]

81-84 are same engines

[hotroddal]

ok i did not know this, thanks for answering my question.

[faf_racing]

get the motor bolted in then the wiring?? use what most accomadates it like headlites taillites etc....

[BLAZERONE22]

The shifter shafts are different, the 81-82 will hit the frame on a 83-84

[350x'inNY]

81-84 are same engines

Not exactly.... the shifter shift is longer on the 81-82 motors. It will NOT fit into the 83-84 frame w/o changing the shaft. The connections for and the CDI's themselves are different in the wiring harness.

Bruce

PS - Posted at the same time there Blazer... didn't mean to repeat the info!

[raptor]

im sorry for my in-correct question. thanks for backing me up. i did not no this difference!

[hotroddal]

ok so what exactly will the shift shaft hit, can that part be bent at all to clear because i realy want to change frames becuase the 84 has way better suspention and brakes and the styling is way nicer.

[350x'inNY]

It will hit the frame of the 83-84 frame, so you will need a shifter shaft out of a 83-84 motor. You can't really modify the frame to avoid this.

Bruce

[hotroddal]

like does it hit by like a half inch or so or more??? and does anyone have a pic of the part of the frame that it hits.

[rt_linn]

Zombie thread brought back... ��

Okay, so after attempting this same swap I ran into this same issue. Has anyone ever tried cutting the shaft shorter and making their own splines or use a pin to hold the shifter in place on the shaft? I have yet to find a 83-84 shaft for sale (second gen parts seem pretty hard to come by), and I would prefer not to tear the bottom end apart and pull the clutches. I'm considering cutting the shaft but would appreciate some other thoughts before I do this.

[HondaRidr]

There is an aircooled 250r page on Facebook that might be helpful in finding the shifter shaft.

[rt_linn]

Sadly I don't have Facebook anymore. I decided because I don't have any use for the longer shaft since I don't have a first gen R I would try some redneck ingenuity. I hacked it off and put a pin in it... It seems to be holding fairly well! It also clears the second gen frame with ease now. I'll try and add some pictures of the hack job.

[rt_linn]

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[Guccimonty805]

Did you have to use a diffrent shifter because on my 82 engine the shifter is diffrent

[rt_linn]

Did you have to use a diffrent shifter because on my 82 engine the shifter is diffrent

Yes, you have to use an 83-84 R shifter to match the frame, AND you have to replace the shifter shaft (81-82 R shaft is longer and won't fit in the frame)... OR you have to do what I did and cut down the 81-82 R shifter shaft. I cut mine with a cutoff wheel because I didn't have any use for the first gen shaft because I don't have a frame from those years... Either way you go you still need a different shifter... I wouldn't recommend cutting the shaft like I did, but they are hard to find and weren't cheap when found from what I remember.

(See the few posts directly above yours for explanation and pictures.)

Hope this helps!

[rt_linn]

To add to my previous post... if you notice in my third picture (sorry it's kind of close up) the 83-84 R shifter has a riser on it that takes it up and over the frame. The 81-82 shifter does not have that riser to my recollection. This is why you have to change the shifter as well.

[Guccimonty805]

Or did you make a custom one

[Guccimonty805]

Ok cool thanks

[Guccimonty805]

Nvm I just now noticed mesaagaes

[Guccimonty805]

Thank you I'm gonna cut it then buy an 83-84 shifter

[Guccimonty805]

How much did you cut off bro?