1974 CR 400 Rebuild

Hey guys. New to the forum but have always been a fan of the old Huskies!

Bought it for $150. Engine is frozen and whoever owned and raced it back in the day rode this thing hard and didn't care too much about maintenance.



Thats how she looked as of Friday when I brought her home. Needs a lot of work but it will be worth it Im sure.

Heres the first hurdle in the tear down. The previous rigging masters welded what I would assume is an incorrect Motoplat ignition on.


Am I correct in assuming this rotor is pressed on? I see threading but most Ive ever dealt with are pressed on.

I will post more pictures as I slowly piece this thing together. Cheers!

The flywheel fits to a taper on the end of the crank stub. There is also a key way in there to line up the timing. The shaft has a left hand thread with a nut to lock the flywheel. If someone has not realised this and used excessive force to try and remove the nut, the thread will strip or the end of the shaft breaks.
I guess something like this may have happened. So they just welded it ! You can just see what is left of the larger female thread in the flywheel that accepts a puller to pull it off the taper.
I am not sure what ignition the 74's would have had, but I guess it wouldn't have been the Mini 6.

Good luck with the build. It will be a blast to ride.

start looking for a crank stub and an ignition . then torch that mini6 off of there. you cant hurt it anymore then it already is. Grouty is correct about thet taper.

Yeah I am going to have it removed and will need a crank stub for sure. So what is the recommended ignition to replace it with? PVL, HPI? I will be racing it in AHMRA and at AMA vintage days so not sure if that dictates what CDI ignition I can run.

This era is one of my favorites. The 74 400WR was Huskys first big bore with a six speed transmission. Very applicable for desert racing.

It looks like the rear of the frame was modified to lay the shocks down. All 74 400's had the MK frame where the shocks were almost straight up and down. It was 75 when they went to the GP frame with the lay down shocks. If you are looking to go original you may have some work to do in that area. I'm sure someone on Café Husky has an old frame that you could get the correct sub-frame off of.