• 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 The previous version was outdated and no longer supported.

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    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!

Husqvarna 1988 510 TE horsepower

on out Dynojet dyno my buddies 1986 AC 510 made 35hp on pump gas and 38hp on VP race gas.
 
wrx said:
on out Dynojet dyno my buddies 1986 AC 510 made 35hp on pump gas and 38hp on VP race gas.
Click to expand...


so the proper reindeer to horse (power) conversion has been completed folks, yes and right here at the Cafe Husky site, so tell your friends to come one and come all
35 rear wheel horse-power equals 50 reindeer-power, now we nee to do the gender calculation that was questioned by Michel :D
 
justintendo said:
sounds about right, lc adding a few ponies.., er, i mean deer...
Click to expand...

liquid cooling didn't make more power, it gave them a chance to tune it a little closer and not worry about overheating
the 430 and 500 2strokes saw no increase just better stability when pushed hard, the clearances were kept closer so the power did not fade under a heavy load WFO
 
2premo said:
liquid cooling didn't make more power, it gave them a chance to tune it a little closer and not worry about overheating
the 430 and 500 2strokes saw no increase just better stability when pushed hard, the clearances were kept closer so the power did not fade under a heavy load WFO
Click to expand...

There were a lot more changes to the motor than just the LC. Lighter crank, lighter flywheel, lighter short skirt moly coated piston, clyinder changes etc...
 
87 model LC 510 makes more torque everywhere than the AC model. AC had 30 ft lb max whereas LC makes more than that everywhere and peaks at 36.7. LC makes up to 10 hp more than the AC at midrange but only 1 hp more at peak. Dirt Rider mag test Sept 86 edition.
 
2premo said:
the 430 and 500 2strokes saw no increase just better stability when pushed hard, the clearances were kept closer so the power did not fade under a heavy load WFO
Click to expand...

I find this hard to believe, both the 430 and 500 got lighter pistons seems the same blank but side cutouts added or enlarged. The air cooled 430 has the earlier reed cage. The liquid cooled 430 and I suppose 400 have much larger transfer ports that are divided.
The ports are similar on the 500 air vs liquid not sure if there is a difference in transfer size, there also is the easier to damage exhaust that is most likely a performance boost. Reed cage is the same.

The ring is a bit higher in the water cooled and the replacement ones the air cooled has to use now. More pronounced it seems in the 430,
 
fran...k. said:
I find this hard to believe, both the 430 and 500 got lighter pistons seems the same blank but side cutouts added or enlarged. The air cooled 430 has the earlier reed cage. The liquid cooled 430 and I suppose 400 have much larger transfer ports that are divided.
The ports are similar on the 500 air vs liquid not sure if there is a difference in transfer size, there also is the easier to damage exhaust that is most likely a performance boost. Reed cage is the same.

The ring is a bit higher in the water cooled and the replacement ones the air cooled has to use now. More pronounced it seems in the 430,
Click to expand...
hard to believe those earlier smaller ports flow as well as the later ones. especially the air cooled 430 which for some reason still had the old 70s reed blocks, compared to the later ones. could be an illusion but the lc pipes look to have more volume.
 
PEZBerq said:
87 model LC 510 makes more torque everywhere than the AC model. AC had 30 ft lb max whereas LC makes more than that everywhere and peaks at 36.7. LC makes up to 10 hp more than the AC at midrange but only 1 hp more at peak. Dirt Rider mag test Sept 86 edition.
Click to expand...


10 more horsepower seems pretty optimistic, also considering usually lightening a piston is to achieve higher rpm's, to gain 10hp in the mid seems odd torque maybe, but typically you see hp gains on top, not saying it's not possible but the way they went seems more for the top
 
justintendo said:
hard to believe those earlier smaller ports flow as well as the later ones. especially the air cooled 430 which for some reason still had the old 70s reed blocks, compared to the later ones. could be an illusion but the lc pipes look to have more volume.
Click to expand...


pipe dimensions have to do with stroke and scavenging, air vs lc would not play into that, but they routed them differently so it would seem an illusion
 
fran...k. said:
I find this hard to believe, both the 430 and 500 got lighter pistons seems the same blank but side cutouts added or enlarged. The air cooled 430 has the earlier reed cage. The liquid cooled 430 and I suppose 400 have much larger transfer ports that are divided.
The ports are similar on the 500 air vs liquid not sure if there is a difference in transfer size, there also is the easier to damage exhaust that is most likely a performance boost. Reed cage is the same.

The ring is a bit higher in the water cooled and the replacement ones the air cooled has to use now. More pronounced it seems in the 430,
Click to expand...


the 84 500 was known to be a brute, the lc 500 was heavier but from what i hear would run with my 85
 
fran...k. said:
I find this hard to believe, both the 430 and 500 got lighter pistons seems the same blank but side cutouts added or enlarged. The air cooled 430 has the earlier reed cage. The liquid cooled 430 and I suppose 400 have much larger transfer ports that are divided.
The ports are similar on the 500 air vs liquid not sure if there is a difference in transfer size, there also is the easier to damage exhaust that is most likely a performance boost. Reed cage is the same.

The ring is a bit higher in the water cooled and the replacement ones the air cooled has to use now. More pronounced it seems in the 430,
Click to expand...



the porting increases were being done before the lc change, i think it was just more or less timing
my brother had a Yami 490 that was no slouch on power, it was a YZ with racing in mind, true it was outdated as an 88 ac but had no issues to speak of
i hear the same comparisons on dual vs single shock, it was just headed that way
but i feel they were bold to be more aggressive on the porting without power failure due to heat in hard competition so i do agree with the lc change
 
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