83 400 aircooled

One of very few prototype cylinders, its a 83 400cc aircooled. Is there anyone else who have one?

Oh at least put photos of the exciting bits . So is it it's own casting . Or just a sleeved down 430

Pretty cool. 8 fins and the large reed. Would love to build one. How 'bout some pics of the ports and head chamber?

What is the bore on yours, please ?

Very nice! I see they ran a little wider squish band. Good to see. Ports look good, too. I wonder if the 430 pipe would run will on this.

it cant be a sleeved down 430, as the 430 never had those reeds in air cooled form.

Most likely a one off test before deciding to go liquid cooled. I would want one just to be different.

That full-size reed is exactly why it got my interest!

would be pretty cool, and never knew these existed!

Please share how you came across it.

Please share how I can get one!

I was looking for a 420 cylinder version 2, with the same look as this with 8 fens. I found this but when I measured the bore I did not understand what it was. Later, when I spoke with a constructor from Husqvarna motorcycles, I mentioned this cylinder and asked if he knew what it could be. He told me he had one too, as he thought was the only one left from the 80's when Husqvarna drove tests on what later became 400 LC. When I returned to my supplier of spare parts later, I bought it because I thought it was a little cool to have it.

look deep or give me a good bid ..

400 or 430, I wish they had been produced with that nice Reed. 250 & 500 got it Waaaaah!

looks like someone did a little work to it
knife ported transfers, general cleaning of the rough castings
nice find

bit of "husky gold"there i would say. best slip it into an 83 frame and put "prototype" all over it!

I thought I read about a 400 ac somewhere but I asked here and everyone said no. I seen it somewhere. Twin shocker 400 air cooled. Why didn't they change it to the 8 petal reeds sooner.(430)

Thick sleeve?

Thats is really cool! I am just turning some Aircooled 430 Cylinders into that by welding on the later inlet and making Aluminium liners to create a Nikasyl 400 Aircooled!

Looks like Husky beat me to it by about 34 years

I would love to have those if you want to trade for some parts?

Andy.