1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

Engine Combination

Discussion in 'Vintage/Left Kickers' started by Vinskord, Nov 13, 2015.

  1. Vinskord Husqvarna
    AA Class

    Husqvarna Motorcycle:
    400 CR
    What combination do we have here? Looks like MK cases and 400 cylinder with a ML radial head. Is the stud pattern close enough to easily do this? MK and ML.jpg
    Vinskord, Nov 13, 2015
    #1

  2. jimspac Husqvarna
    Pro Class

    Location:
    Connecticut
    Husqvarna Motorcycle:
    82 250WR, 82 430WR, 84 250WR, 85 400
    Other Motorcycles:
    86 400WR, 82 Montesa Cota 349
    It certainly looks like it if it is bolted in place. Someone would have had to slot the bolt holes and spotfaces to pull it off if they were not a close match. Or have the assistance of a top notch tig weldor. The head would likely be from a GP 360.
    jimspac, Nov 14, 2015
    #2

  3. markt2 Husqvarna
    AA Class

    Location:
    Nevada
    Husqvarna Motorcycle:
    1976 250CR (times 2)
    Other Motorcycles:
    Several vintage Yamahas
    Interesting. It looks like the base gasket is the same on the 400 from 1969-75. So maybe a 1975 400 top end or head on an earlier engine?
    markt2, Nov 14, 2015
    #3

  4. jimspac Husqvarna
    Pro Class

    Location:
    Connecticut
    Husqvarna Motorcycle:
    82 250WR, 82 430WR, 84 250WR, 85 400
    Other Motorcycles:
    86 400WR, 82 Montesa Cota 349
    The 1975 400 had the big case 5 speed engine so that is the stock cylinder on that engine. The radial head likely came off a 360GP engine
    jimspac, Nov 14, 2015
    #4

  5. Crashaholic Husqvarna
    Pro Class

    Location:
    Antelope Valley, CA.
    Husqvarna Motorcycle:
    73 450WR 6spd motor in a 75 MK frame
    That's right, the 75 and 76 360CR and WR will bolt right on the 69 through 75 400 cylinder. When using the 360 head for this application the two 8mm bolts are not used just the four 10mm.

    The cylinder looks like a 250. It has only 9 fins instead of 10 not to mention the large amount of space between the top of the head and the pipe. The clutch cover is no doubt off a 400.
    Crashaholic, Nov 16, 2015
    #5