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

1976 360CR GP project

Discussion in 'Vintage Restoration Projects' started by ruwfo, Aug 26, 2013.

  1. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Finally had some time to pull the old girl apart..the top end was starting to rattle a little. I pulled the top end off, then the engine came out etc. Cleaned & repainted the frame ,cleaned engine & reinstalled. I have to say the early motor come out easier then the 78-80 motors.

    Attached Files:

  2. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Put on almost new used rear mud guard & rear fender & for now went back to the original swingarm, repainted it & brake arm, pedal etc. Top end was still original bore & i maybe able to just replace the rings, got to check the gap.

    Attached Files:

  3. jimspac Husqvarna
    Pro Class

    Location:
    Connecticut
    Husqvarna Motorcycle:
    82 250WR, 82 430WR, 84 250WR, 85 400
    Other Motorcycles:
    86 400WR, 82 Montesa Cota 349
    Be sure to check the piston clearance at the skirt. You should find .003 to .004 clearance if the piston is still good. I had the same symptoms on the 84 250WR. The piston had .008 clearance at the skirt and was the original piston. I had it bored and it did not clean at 1st over so it went out to 2nd. Luckily I had the piston on hand for another engine yet to be assembled.

    Meanwhile I have been working on repairing the groove damage on 2 CR backing plates. JB Weld is working out well and I modified a body filler applicator to finish the bottom of the groove to eliminate the need to machine it.
  4. disonny Husqvarna
    AA Class

    Location:
    upstate ny
    Husqvarna Motorcycle:
    73 360 wr/rt, 75 wr250 78 cr250,
    Other Motorcycles:
    83 wr250, 84 wr400
    Jeez, I hope you get rid of that red mud flap!! Other than that it looks good. I almost bought that bike. I just got a 78 cr250. Gonna do a clean up and paint. And I just bought a parts bike with some ohlins on it.
  5. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Ok, been a bunch of months since i've been able to play with the 360. I recently got a modified 78 from another Cafe member. Jim, made it so the tapered
    bearing from the later year models slide right in.

    Ok, so another round of mocking up parts, new frame, 79 WR forks & wheels, makes me think if i go with the banana swingarm, i'd need 16" c-c shocks
    as the shocks in pictures are only 15".
    The 79 forks as there set in the triples, now, allow 3/4" increase of travel over the stock 76 tubes with any extra 3-4 inches i'd still be able to pull them
    down if needed. I'm just i eye balling things now, but at least the rear sprocket looks to line up with the chain guide on the swingarm. Last picture
    shows current 14" shocks (one 1" longer then stock) & 76 stock swingarm & frame.

    More to come.... Husky John

    Attached Files:

  6. 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 last picture shows nice balance between front and rear. I am sure the 79 WR forks are longer than the CR forks that were on my 78 Auto on the same type frame. As I recall,it had 10" travel front and rear

    Of course I just saw the last picture is the 360 frame:)
  7. suprize Husqvarna
    Pro Class

    Location:
    Bendigo, Australia
    Husqvarna Motorcycle:
    WR 400, bike in a box Moto Villa 350
    Other Motorcycles:
    ktm 300
    whats that in the back of the shed!!!:thinking:
  8. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    whats that in the back of the shed!!!:thinking:

    84 510 4 stroke
  9. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Well, if I follow Husky's logic, then if I increase the rear shocks by 2" , then the front forks should grow by the same amount to preserve there intended balance.

    Stock 76 360CR has a 9" fork leg length from bottom of triple clamp down to dust boot top, and a 13" c-c shock length. So if I go with a 14"
    shocks I'd need to swap the forks for the 79 anyway , as the stock forks are at there max length already.

    But then of course nothing is easy, as if I remember right the 79 rear wheel won't work right with the 76 swingarm, it's always something LOL
  10. jimspac Husqvarna
    Pro Class

    Location:
    Connecticut
    Husqvarna Motorcycle:
    82 250WR, 82 430WR, 84 250WR, 85 400
    Other Motorcycles:
    86 400WR, 82 Montesa Cota 349
    Use the 1976 wheel on it when you move the engine in. I did rebuild the full floating mount for a reason.....

    Also you may want to use the upper tubes from the 360 forks as they are likely about 2 inches shorter and you will still have 9" travel. I noticed the same difference between the 35mm forks on the 78 WR frame I have and the 79 forks that were on the 78 OR frame I have.

    Keeping it lower is the reasoning behind the 78 I am building . Target seat height:36" Max Front and Rear Suspension Travel 10" Max but quality travel Emulator front, Remote Ohlins back
  11. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Long over due update , last fall a fresh top end went on.

    December i swapped the engine/air box/plastic/ to modded frame i got from Jim.

    Last few weekends in between shoveling snow, i've mounted a fresh rear tire , nicer front tire & rebuild the forks.

    Bike currently sports

    1) modified 77 125CR/78 390auto frame modded to except tapered roller bearings along with fresh paint
    2) 1979 390WR front end- freshly rebuilt.
    3) 1980 CR rear wheel & brakes
    4) Banana swingarm with 15.75 " long shocks
    5) new rear fender & mud guard
    6) fresh 2nd over piston
    7) 80's stock handlebars

    New number plates & swapping the shock springs - to dual rate ones, are on the slate for this weekend, along
    with remounting the tank & seat.

    more to come Husky John 100_3544.JPG 100_3545.JPG 100_3546.JPG
    dartyppyt and justintendo like this.
  12. 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 frame looks nice. Did you do Rustoleum Appliance silver or did you use real paint?
  13. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Nope still using that Rustoleum Appliance silver...:cheers:

    Like you guys further up north , i've been dealing with snow, but not as much, so re-painting
    the fork legs, swingarm etc will have to wait til it gets warmer...if that even comes...
  14. 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 shall arrive before you know it.... like always:)
  15. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    Weather getting better, so i trying fitting a chain on the old girl & realized without a lower chain roller there would be too much slack.

    Lucky the 79 390WR frame i had , had one, but of course it's never that easy.

    I first tried just swapping the 76 for the 79 rear motor plates, which of course meant removing 1/2 of what i had already assembled. But after removing the pipe, airbox , rear wheel & shocks, and fitting the 79 ones, the front lower motor mount won't line up right.

    motor mount plates.jpg

    So onto plan B, i had to drilling a co axle hole similar to what was on the 79 plate, but as luck would have it, the position wasn't the same, as
    the motor cases must be different too.

    Finally got it positioned right & back went everything , only took me a day & 1/2.

    100_3683.JPG

    100_3684.JPG


    Still glad i was able to mix & match different year Husky parts & make it work.

    Husky John
    oldbikedude likes this.
  16. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    A bit more progress, still some paint & polish required. Still got to swap out the levers sets, front chain guide, swap out the shock springs for a dual rate
    set too. Not sure if i'm going to paint the fork legs gold, black or gray like Howerton's

    100_3691.JPG
    100_3692.JPG
    100_3693.JPG
  17. jimspac Husqvarna
    Pro Class

    Location:
    Connecticut
    Husqvarna Motorcycle:
    82 250WR, 82 430WR, 84 250WR, 85 400
    Other Motorcycles:
    86 400WR, 82 Montesa Cota 349
    I think Howerton's were bare or clear anodized aluminum. Stock 76 straight legs and 77 leading axle were both black. I think black would be suitable as the works Husqvarnas were predominately pre production prototypes.
  18. disonny Husqvarna
    AA Class

    Location:
    upstate ny
    Husqvarna Motorcycle:
    73 360 wr/rt, 75 wr250 78 cr250,
    Other Motorcycles:
    83 wr250, 84 wr400
    nice transformation. It's amazing how many parts interchange.
  19. ruwfo Administrator

    Location:
    NJ
    Husqvarna Motorcycle:
    1980 390CR, 1982 430CR, 1984 400WR
    Other Motorcycles:
    1985 250XC, 2016 FJ-09
    I think Howerton's were bare or clear anodized aluminum. Stock 76 straight legs and 77 leading axle were both black. I think black would be suitable as the works Husqvarnas were predominately pre production prototypes.

    I was thinking black legs as well too.


    nice transformation. It's amazing how many parts interchange.

    Yeap , that's why I love Husky so much , they always made improvements , but with the mind set (I think) to make things interchangeable...:banana:
  20. jimspac Husqvarna
    Pro Class

    Location:
    Connecticut
    Husqvarna Motorcycle:
    82 250WR, 82 430WR, 84 250WR, 85 400
    Other Motorcycles:
    86 400WR, 82 Montesa Cota 349
    More to minimize development costs.