'75 MX400B parts swap to '74 MX360A?

Zeke27G
Profile picture for user Zeke27G
Posts
1408
Joined
11/8/2011
Location
Ascot Park, CA, USA
Zeke27G
Edited Date/Time 6/16/2013 10:19pm
So I picked up this '75 MX400 (nope not my Camaro!) with the intention of using the wheels and forks on my MX360.



On the MX400 the rear rim is in great shape but upon closer inspection it seems the front rim has had a dozen cracks that have been welded up. So I figure I'll use the hubs as they are magnesium and have them laced up to some Akronts. I know the Akronts weigh a ton but I just love how they look. Cool

Have any of you had any bad experiences with the MX400 magnesium hubs? Blink

Now I believe it was Newmann who told me a few years back that the MX400 forks were an improvement over the MX360 and with a quick measurement they seem to have approximately 1.5" of extra travel. Woohoo

Lastly, I was planning on using my MX360 forks, triples and 21" front wheel on my '74 MX100 as it seems the head tubes are identical. Laughing

Have any of you, maybe 'project racer' ?...had any problems with that swap? Blink

Thank you as always!!Cool
|
newmann
Profile picture for user newmann
Posts
24438
Joined
4/1/2008
Location
USA
newmann 6/10/2013 8:22pm
6/10/2013 8:22pm
I think only the backing plates are mag and the hubs aluminum. What problems would a set of hubs that weighed half as much present?? Let me know if the stem and dampener rods are aluminum when you tear into them.
2TYam27
Profile picture for user 2TYam27
Posts
102
Joined
9/28/2009
Location
Weatherford, TX, USA
2TYam27 6/15/2013 11:29pm
6/15/2013 11:29pm
I believe, as Newman said, that the hubs are aluminum. The backing plates are mag. I have raced several seasons on those hubs with no problems. I might be interested in the electrical system and rear brake pedal and rod if you are going to part the rest out.
project racer 6/16/2013 7:21am
6/16/2013 7:21am
The 400 tank will fit on your 360, and save some weight also. The hubs from 75-79 are the same on the MX - YZ's. Have not tried the front end swap, but get out the tools, and see what happens. I don't see any major stumbling blocks there.
Zeke27G
Profile picture for user Zeke27G
Posts
1408
Joined
11/8/2011
Location
Ascot Park, CA, USA
Zeke27G 6/16/2013 10:19pm
6/16/2013 10:19pm
Thanks dudes!! Cool

So I'm definitely planning on using the wheels and some other bits and pieces.

2TYam27: If you're interested in the electrical system lets work out a deal. As far as the 400 rear brake pedal goes I was planning on keeping it for my 360 and I'm not sure if the 400 rod will work on my 360. Stay tuned! Blink

Project Racer: The tank on my 360 is really clean, same with the tank on the 400. I'd rather see the tank from the 400 go to someone doing a restoration or etc. It's mint!! Woohoo

Post a reply to: '75 MX400B parts swap to '74 MX360A?