Symphony Of Construction - Project "FunTen"

[motoman1012002]

yeah I know shortline has some too but not for the cdi motors I cant find one for the cdi bikes

[shortline10]

Man Jeff !!! You do real nice work . Looks great .

Had sometime to mess around in the shop this weekend. Got the motor torn down and the cases cleaned up and cooked out the oil so that they would not gas out during powdercoating. I also tap'd each hole so I have no snags on assembly. I also reamed out all the 10mm counterbores for the dowels as well. Prep'd each gasket surface too! Picked up a few stainless bolts from work, still need to grab the rest. I powdercoated these cases in a flat black for something different. I also installed a trick little magnetic drain plug I had kicking around.

[code200k]

man this thing is gunna be sweet. you do some real great quality work and do it right. i like it.

[honda250sx]

Thanks Guys!

ROAD BLOCK!

The night started good. I scored some really nice high precision Nachi 6004 and 6204 bearings at work today. I dug out the SL90 tranny shaft I bought NOS and my gear set I had cleaned up from the original 1984 110 motor I started with. I took apart the output shaft to transfer over the gearset and discovered that the original output shaft measured 20mm OD and the SL90 shaft I have measures 18mm.

Question is...Do I have the right output shaft needed for this conversion? Or do I have the wrong SL90 shaft? Part number of the SL90 shaft was 23221-052-000.

Not sure whats going on here. Mike any idea?

[shortline10]

Gonna walk out to the shop and measure a couple for ya. Be back in a flash LOL .

[honda250sx]

Give me a buzz Mike if ya can. I left you a voicemail.

[shortline10]

Ok . I pulled some parts out and measured them for ya . First off the tranny shaft you have is correct @ 18mm , the problem I believe is the 84-85 motor have a little beefier tranny and honda bumped it up to 20mm on the 84-85 model . I measured a stock atc110 1979 model shaft and its measuring 18mm also . If your wanting to use that bottom end I think your gonna need a older model atc110 /90 tranny gears and bearings .

[motoman1012002]

I pm'd on some parts

[honda250sx]

Thanks Dan. Got your pm. Unfortunately my there is nothing wrong with my transmission. The issue is that the counter shaft from 81-85 are all 20mm shafts. The 1969 SL90 shaft is 18mm. Thus meaning that inorder to make this swap on a CDI motor you will need a counter shaft from a 79-80 110 or any 90 counter shaft and gears because they have 2nd and 3rd that are splined for an 18mm shaft.

Needless to say I bought NOS gears that I needed to make this conversion work.

[honda250sx]

Thanks Dan. Got your pm. Unfortunately my there is nothing wrong with my transmission. The issue is that the counter shaft from 81-85 are all 20mm shafts. The 1969 SL90 shaft is 18mm. Thus meaning that inorder to make this swap on a CDI motor you will need a counter shaft from a 79-80 110 or any 90 counter shaft and gears because they have 2nd and 3rd that are splined for an 18mm shaft.

Needless to say I bought NOS gears that I needed to make this conversion work.

[motoman1012002]

nos at least you got what would work now

[honda250sx]

Dan are you converting a CDI motor. You will most definitely run into this issue if that is the case...

[dirtjunkie85]

looks like a lot of work that engine is toast!!!

[motoman1012002]

was going to use a cdi mtor but not now going to use a 79 110 motor

[honda250sx]

looks like a lot of work that engine is toast!!!

Not sure what your refering to?