New Project - 1986 WR400

I don't reckon I've ever been accused of being the brightest bulb in the bunch...

boom tish! im here all week..try the schnitzel...

Great idea. I did a quick internet search and found a couple of companies that rebuild and service Motoplats.

Forgetting over here- likely the same year-'86 or near there- just had to make a little plate for the caliper

Thanks for the link, Steve... I just ordered one for my 87 250 XC.

Still have the kx forks in triples- 43mm i believe

Gearbox oil - I found one source that says 1.4 liters is the correct amount. Would someone please verify if this is correct?

yes 1.4l

Isn't the rule of thumb we fill the gear box to the bottom of the angle on the neck(filler)? Where the vertical on the clutch cover meets the angle of the filler neck?

That's what I do too.

While I'm at it, two more questions:

Does your Mikuni have this opening fully exposed? Perhaps seal it off to be safe (??)

Also, I purchased the two-piece intake manifold. When I mounted it I found that it was considerable longer than the stock piece. Phillip at Husqvarna-parts said some space can be gained by readjusting the motor mounts – I haven't tried this yet. The other option, perhaps in conjunction, is to cut down the rubber from the carb side. I'm hesitant to do that. Anyone else out there who has swapped out to the two piece manifold, how did you make it work?


Thanks!

the angle would be max fill..on the air cooled cover theres two lines which are the min/max marks.

this is an issue on the big bore ones, the 250 bikes it fits perfect. ive thought about shaving the intake a bit and cutting/welding the reed surface to gain a bit of room. you can leave it like you have it if you have the clamp in the right place. ive seen the airbox boot cut too

the airbox boot/ flange is from an xc/cr model. they came with a tm flatslide carb. the carb body length is different between tm/vm carbs.

Interesting. I have an 85 cr and an 85 Xc, both 500s, and both are 40mm roundslide vm. Also have an 87 250wr and an 87 430xc and both have a round slide. I've never seen a flat slide on any of the bikes I've had but I've also never had a 86 400. Not doubting you, Just asking to further educate myself on the swede bikes.

that intake is two piece?
it looks long, my two piece has a near flat about 10mm base and a short adapter, fits perfect
actually 2 of them, one Husky OEM and one UpTite both fit perfect
do you have pictures of the parts only?

I've got an 86 XC250, or most of one, Carb, or at least the parts of it that I have, flat side.
Carb in pictures, and in my 86 WR400 both Roundslide.
Parts diagram shows the flatside in the /86 240, 250 CR, XC, everything else roundside.
The 1985 parts diagram also shows the 250 with a flat side.

As for achieving a better fit, you could gain a few mils, and even change the angle a little on the aluminum base of the two piece intake by placing a sheet of emory paper on a flat surface and carefully sanding some thickness out of the base (it's certainly over-machined enough to allow for some reduction in thickness, you will burn through the anodizing if that bugs you). Just make sure that the surface you use is absolutely flat to avoid sanding in imperfections. You can change the angle by consistently applying pressure to one side during the process (while keeping it flat on the paper). You may be able to do both ends of the aluminum piece, the smaller piece will be a bit more difficult. That approach is, of course, at your own risk. Just don't do too much at a time, consistently check it out, and you shouldn't make any errors that can't be fixed with a little silicone.

Otherwise, you appear to have shoe-horned in the carb, which is what I did. it's rough on the air filter boot, but doesn't stick so far into the filter box that it restricts airflow at all. Air box and frame will wear on each other a little.

I GOT A PLATE SOLD BY HALLS THAT USES THE OLDER STYLE TWO BOLT MIKUNI RUBBER BOOT FIT AND WORKED PERFECTLY I THINK THEY HAVE THEM MADE LOCALLY

Thanks for the info Eric!

is that a 38mm or 40mm carb?
also, does your intake manifold cant to the rh side? this is needed on the single shocks, the dual shock one is straight.