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

'78 WR (OR?) Restoration

Discussion in 'Vintage Restoration Projects' started by Houredout401, Dec 14, 2016.

  1. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Looks like my SA is disintegrated, parts are rolling around and stuck in the silencer tube by what appears to have been the base plate for the SA. So to confirm there should be no packing in the perforated tube inside #2?
  2. grouty Auto Lover ...

    Location:
    South West UK
    Husqvarna Motorcycle:
    78 390WR, 78 390 AMX, 500 Humph
    Other Motorcycles:
    works 73 CCM 520, another CCM520
    The best thing that can happen to the SA is for it to either come out or the centre mesh to disappear ! They clog up with carbon and restrict the motor.
    As I said earlier, the wadding gets wrapped around the perforated pipe. Th SA sits at the front of the silencer, and the wadding sits behind it. It's the same as in my '78 390WR pipe. If the SA will come out, just remove the centre mesh and put it back in.
  3. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Ok will do. Someone must have stuffed packing in the pipe by mistake. Dents is silencer are not allowing SA, or whats left of it to come out, may have to cut it open.
  4. suprize Husqvarna
    Pro Class

    Location:
    Bendigo, Australia
    Husqvarna Motorcycle:
    WR 400, bike in a box Moto Villa 350
    Other Motorcycles:
    ktm 300
    surgery is required. unless your in a forestry area with high fire risk and need the sa, if you can make a longer inner perforated tube for better silencing, you will have better performance as well. im not sure how easy that would be.
  5. jack topper Husqvarna
    A Class

    Location:
    Cascade, MT
    Husqvarna Motorcycle:
    1974 400WR
    Other Motorcycles:
    honda, yamaha, suzuki, Indian, Kawas
    The guts of my 74 400WR muffler (downstream of the SA) have gone missing. There aren't many spare parts available out there for the exhaust, so I'm having a new "perf-tube" and end cap made at a local muffler shop. The SA is still in place and looks serviceable; good thing, 'cause I probably couldn't get it out past the dents anyhow. The outside of the perf-tube will be wrapped fairly tightly with about 13 mm thick packing, which will be strapped on with a few bits of SS wire. A 73 mm OD x 330 mm stainless spring (330 mm free length, 244 mm installed) will then go around the entire tube/packing mess and apply about 6 pounds of pre-load between the SA and the end cap when installed, pushing the end cap out against the retainer circlip to minimize vibration and wear. The spring will also serve to hold the packing in place around the perf-tube. Be happy to provide photos of the assembly when finished if anyone is interested.
    JT
  6. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Frame finally ready for paint. I tried the "bead of weld" trick to remove the outer races from the frame head tube, but that did not work. So I did my tried and true "weld in a bolt trick", and they popped right out.

    [IMG]
  7. MikeDi Husqvarna
    A Class

    Location:
    U.S.A. New England
    Husqvarna Motorcycle:
    1983 WR 430
    Other Motorcycles:
    Stuck in the 80's vintage
    Wicked Smaat!
  8. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Starting re-assembly of the engine now that cases are painted and have had a week or so of cure time. Got all bearings in no issue except for the small bearing in mag side case. This is the smaller of the three bearings in that case, and it is a blind bearing that covers the clutch shaft hole (Not the one in the top of the case that the actuator rides on, this one is inside the case). That bearing does not seem to press in flush and I cant remember if that is the way it was when I pulled the old bearing??? Here is the picture, it is sticking up about 3/16's, maybe a 1/4" I installed the bearing twice and both time would only seat to this level.

    Edit: fixed. Pulled it again and there was a tiny metal shaving holding it up.

    [IMG]
    MikeDi likes this.
  9. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Kickstand bracket fixed on replacement swing arm. Scrap fitted:
    [IMG]

    Finished product:
    [IMG]
  10. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    New foot on kickstand:
    [IMG]
    MikeDi likes this.
  11. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Parts back from platers, now the real assembly can begin. This is actually two bikes worth of hardware - my '77CR and '78WR. Same price if I did one or two bikes, so why not do both. This is the first time I had re-plated nylock nuts - happy to find out the nylon holds up fine to the process.
    [IMG]
    oldbikedude and Eurofreak like this.
  12. Eurofreak Husqvarna
    AA Class

    Location:
    Western NY
    Husqvarna Motorcycle:
    1986 Wr 400, 1982 CR250
    Other Motorcycles:
    70's Triumph , KTM , Buell, etc
    Looks real nice. What kind of plating? Do they prep them first?
  13. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Original seat pan was cracked and rusted beyond repair. Had to pay more than I thought to get a decent one. Here it is after blasting and semi-gloss black PC:

    [IMG]
  14. Houredout401 Contributing Member

    Location:
    New England
    Husqvarna Motorcycle:
    '77 CR250 '78WR250
    Other Motorcycles:
    '76MR250 '83IT250 '84 IT490 '69CT70
    Just clear zinc this time, cadmium line was not available. Does not hold up as well as nickel or cadmium, but for $100 I'm good with it. The platers put the parts through a chemical prep process that degreases, de-plates, and acid-etch, but I have found that the more mechanical prep you do the better the results. I degrease in a bucket and then wire wheel the area or the part that will show (like the head and end of the bolt). If a nut or other item has a raised or gouged area, I hit that with a file, but really don't spend that much time. For these parts, I probably put in 60 minutes of total prep. If a part is severely pitted from rust, you will not get as shiny a finish.
  15. MikeDi Husqvarna
    A Class

    Location:
    U.S.A. New England
    Husqvarna Motorcycle:
    1983 WR 430
    Other Motorcycles:
    Stuck in the 80's vintage
    I don't like it at all. Way to nice..
    Can you finish my bike for me? It's just as satisfying and way cheaper. :notworthy:
    Eurofreak likes this.
  16. suprize Husqvarna
    Pro Class

    Location:
    Bendigo, Australia
    Husqvarna Motorcycle:
    WR 400, bike in a box Moto Villa 350
    Other Motorcycles:
    ktm 300
    cmon Mike, lift your game....only 20 nuts and bolts on a husky, take you ten mins to put it back together....:thinking: 15 tops
    MikeDi likes this.
  17. Eurofreak Husqvarna
    AA Class

    Location:
    Western NY
    Husqvarna Motorcycle:
    1986 Wr 400, 1982 CR250
    Other Motorcycles:
    70's Triumph , KTM , Buell, etc
    Can I have some of what yer smokin Suprize?

    I just wire wheeled my bolts for now. I know they'll rust.
  18. MikeDi Husqvarna
    A Class

    Location:
    U.S.A. New England
    Husqvarna Motorcycle:
    1983 WR 430
    Other Motorcycles:
    Stuck in the 80's vintage
    Yeah, he's right. I like to bust on Dave. He does nice work.
    I've been ridin' the wire wheel for the last hour or so.
    For some sick reason, I kind of like it. got a small brass wheel on my drill press.
  19. 84scrambler Husqvarna
    Pro Class

    Location:
    mid Florida
    Husqvarna Motorcycle:
    87 xc 250, 85 wrx 250, 79 wr 250
    I like the brass ones the best too.
  20. suprize Husqvarna
    Pro Class

    Location:
    Bendigo, Australia
    Husqvarna Motorcycle:
    WR 400, bike in a box Moto Villa 350
    Other Motorcycles:
    ktm 300
    I like the place that sends them back all shiny:thumbsup: without loosing my finger tips:eek::mad::(