• Husqvarna Motorcycles Made In Sweden - About 1988 and older

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

1984 WR400

i have 2 400 motors, one has vibes and the other doesnt. the vibration was traced to the crank, and when the crank was swapped between engines the vibration swapped as well. we took both cranks to our local machine shop and found one was out of balance and slightly out of true. might be worth checking this as the one 400 that didnt vibrate is the nicest husky engine i have, so smooth and very willing to rev if needed. i also find the vibes are a tad better with phils ss engine mount plates, they certainly hold up better and the bolts stay tight.

I'd agree 100%, my 86 vibrated like a paint shaker, but the 84 was so smooth.. I was testing the 84 out on a short blast up my street when I 1st got it & wacked the throttle on, I thought the clutch has slipped, til I realized I smoked the back tire :D.. That's one
bike I have on my short list to get another of.

Husky John
 
ruwfo said:
Thanks thats really interesting info and something to ponder on. I wont be wanting to use 1st at all to be honest just 2nd upwards. Is 2nd to 3rd ok? 3rd to 4th?

I probably will be running the Electrex ignition and rota kit, so that might wake things up a bit too as I think the WR motoplat flywheels would of been heavier.

Don't know what I was thinking, (thought you had a 250 duh?) , so your much better off then Husky's little bro. The Trick on the 400
water cooled is like Motosportz mentioned "dont like to rev mine as it gets viby ", so learn how to short shift. The 400 can run
at a walking pace in 2nd, so don't use 1st at all. If you got to rev her, check (a lot) that the head bolts are tight.

I ran my 86 in MX in 2007 & got plenty of hole shot against 250F's

Husky John
Click to expand...
Hi John yes I do have 84 CR250s as well but yes my question was aimed at this WR400 :) lol
I love my 250s but want to build the 400. I like the 84 chassis and want to try it with the bigger engine!!
 
its a great engine and check out my rebuild thread on here for any info. I tweaked mine a tad and its like a 125 on steroids but still pulls nicely off the bottom. great engine. you will need to re do the damping stack as they are soft as for a plush enduro ride. a bigger rear sprocket will see you holeshotting in 2nd gear ok. great engine ...if you didn't pick up on that.... it will probably be an 85 as most of them were badged 85 for some reason tho everyone thinks they are 84's
 
suprize said:
its a great engine and check out my rebuild thread on here for any info. I tweaked mine a tad and its like a 125 on steroids but still pulls nicely off the bottom. great engine. you will need to re do the damping stack as they are soft as for a plush enduro ride. a bigger rear sprocket will see you holeshotting in 2nd gear ok. great engine ...if you didn't pick up on that.... it will probably be an 85 as most of them were badged 85 for some reason tho everyone thinks they are 84's
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Hi what rear sprocket are you running ?? I was thinking of running a 54?
 
Had the angle grinder out today!!

Removing the 'rock bar' , grab rail and all the extra brackets on the swing arm that I do not require!image.jpg image.jpg image.jpg
 
i have a pile of cr frames i would have traded you a few of to get a good frame with that stuff attached..swingers too..its so much harder to weld that crap on, they dont make these anymore..:(
 
Bit of bad news the swing arm bearings were pretty seized and it has elongated the frame holes.

The swing arm bolt is knackered too. Big grooves where it's grinding in the frame.

Will fabricate some 'washers' and get the welded on and get a longer swing arm bolt made to compensate image.jpg
 
how good of a welder are you? plug welding it is an option long as you can get the hole where its supposed to be again. clamp some alum or better yet brass to the back and fill, then redrill. then no messing another hardened pivot shaft, a cardboard template is handy for finding your hole again. this worked well for fixing some of my frames. we plug weld at work quite a bit.
i know you mean about the gouges on the inside, filling with weld and grinding smooth is the only good way to fix it.
 
justintendo said:
i have a pile of cr frames i would have traded you a few of to get a good frame with that stuff attached..swingers too..its so much harder to weld that crap on, they dont make these anymore..:(
Click to expand...

Sorry I realise I'm 'butchering' a 30 year old bike but I need all the rad fittings and geometry that the 84 WR frame has.

I am going to atleast be bringing her back to life!!

But I understand your perspective
 
The bottom end is split now and new bearings and seals going in.

barrel is off being rebored for its new piston.

Today got a package from the USA of the uprated rear springs and preload kit. Feeling lucky as these springs seem to have suddenly gone on 'back order' now. Hope Ohlins are willing to make some more!!

Slow progress ....
image.jpg
 
Well the barrel took a double bore to bring it back into tolerance. So kindly HVA exchanged my piston and supplied me with a CR430 head gasket. Not sure if we are still a 400! 405? The new piston won't work with the 400 gasket.


image.jpg image.jpg

Got a few other little bits too.

Water pump rebuild kit and sprocket plate

image.jpg
 
Note for others,
Anytime these sit for who knows how long with gas in the crankcase change the cylinder base gasket. The gas softens the base gasket.

My '86 400 was awesome very smooth. It had low use on it.
 
Put a piece of brass with a clamp on the rear side of the elongated swing arm hole and weld some of the elongation up. Then remove the brass. The dremel or file it round again..
 
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