1980 Discs on 1978

[Scotty4]

What all is involved in moving my mags with discs from my 1980 XS400 E parts bike to my 1978 XS400 2E? I like the look of the spokes, but man do I want discs for ease of maintenance!

 

[Scotty4]

just from looking at the bike it looks like mounting both reservoirs, both calipers, and probably new lines.

 

[xschris]

My guess is the mag bike with front and back is a 78-E model? The 80 only was a front disc bike. The entire wheel and forks ( or just the lowers) would have to be swapped for the the front. The entire rear wheel and swing arm would have to be done as well as all the 78-E mounting brackets welded to the 78-2E frame. It can be done but it will add a lot of weight and disc setups are a lot more work and maintenance than drum and cable setups.

 

[Scotty4]

My guess is the mag bike with front and back is a 78-E model? The 80 only was a front disc bike. The entire wheel and forks ( or just the lowers) would have to be swapped for the the front. The entire rear wheel and swing arm would have to be done as well as all the 78-E mounting brackets welded to the 78-2E frame. It can be done but it will add a lot of weight and disc setups are a lot more work and maintenance than drum and cable setups.

Well you've sold me on maintaining the drums. I think it is a 78E. My dad's friend dropped it off, oh, 15 years ago and it has sat under our deck under a tarp. Planning to cafe it one day or something cool so I guess I will leave it be.

Thanks Chris.