• 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 The previous version was outdated and no longer supported.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!

what the heck IS this thing?

OhioTed

OhioTed

Husqvarna
B Class
I'm working on what is supposed to be 1983 XC175. It's got the spacer plate between the case and the jug, but when I opened up the top end, I found the bore to be approximately 57mm.

According to the specs on these motors, a 125's standard bore is 55mm, and a 175 is 64.75.

What am I dealing with? The top end is in very good condition. Bore and piston both very clean - no blow by. Bit of wear on the piston, but not at all worn out.

If anyone can shed any light on this I'd sure appreciate it.
 
I would have to say it is on 4th over rebore for 125 unless it has a stroked crank. More likely the rod was replaced with a longer one requiring the spacer under the cylinder. My theory at least
 
Probably a longer rod out of something else. There are a bunch of bikes with the same size wrist and big end pins but longer rods. The piston could be almost anything, there are tons of bikes with 15mm wrist pins, including all modern 125s and the KTM 150.
 
Its not really a big bore, 57mm is only 2mm over which would have been the last oversize in Wiseco and is only about 134cc. More likely it has a longer rod from a Cagiva or KTM.
 
A spacer plate could be used to raise the exhaust port then the head is skimmed to bring compression back. Found this had been done on my 430, home tuning at its worst. Best check the head?
 
The spacer plate was used with the 82 kit due to a piston pin location issue which cuased to hit head. Was not used on 83. 82 kit and 83 stocker 175 not same piston. 83 is 16 mm pin if I recall and 83 pistons are scarecewr than unicorn teeth
 
Both the '82 kit piston and the '83 production piston had 15mm wrist pins. Both pistons are non existent, though I have 4 of the '82 kit pistons and 2 '83 pistons.
 
Kartwheel68 said:
Both the '82 kit piston and the '83 production piston had 15mm wrist pins. Both pistons are non existent, though I have 4 of the '82 kit pistons and 2 '83 pistons.
Click to expand...
Bummer, guess I better not blow up my 82. Or better yet buy a bike with better parts availability if I plan on riding it. Didn't realize these parts were so scarce.
 
I'm working on a rod kit with a 16mm wrist pin and the appropriate thickness spacer plate to allow Yamaha YFZ350 Banshee pistons, they start at 64mm and go up many over sizes.

The reason the spacer plate was in the '82 kit is because the piston was not originally for the Husky and was not made by Mahle like other Husky pistons, it was out of something else with a different pin height. In '83 for the production bike Husky had pistons made by Mahle with the correct pin height.
 
I've talked to several places that will do runs as small as 4 or 8 pistons for very reasonable prices, but the Husky 125/175 rods are too short, 13mm shorter than every other 125. Going to a longer rod with a 16mm wrist pin kills two birds with one stone, longer rod and easy to find off the shelf pistons.
 
Kartwheel68 said:
I've talked to several places that will do runs as small as 4 or 8 pistons for very reasonable prices, but the Husky 125/175 rods are too short, 13mm shorter than every other 125. Going to a longer rod with a 16mm wrist pin kills two birds with one stone, longer rod and easy to find off the shelf pistons.
Click to expand...

Hey Kartwheel68,
Just want some clarification because my brain isn't working too fast right now.:) You've found places that can make the pistons but not something that would work with the stock rod? If I could source a handful of pistons at a reasonable price it would likely last me a lifetime as I don't ride the bike often, but it is nice knowing if I need to replace something I can get it made. Would you know if these places also supply rings or is that another part that has to be cross referenced and sourced from another product? Sorry for all the questions but you are one of the few people with a 82 XC125 like mine.

Thanks,
Chuck
 
Yes, I talked to more than one place that would make any piston I could send as a sample in runs as low as 8 pistons in two sizes for around $150-200 each including rings. If I was going to have one made it would be the '83 piston since it will work with the stock rod without the spacer plate. The reason for the rod change is twofold. One, the stock rod is too short, the bike will run much better with a longer rod. Two, since the new rod also has a 16mm pin, it will allow use of Yamaha Banshee ATV pistons which go from 64mm stock up to 66mm which is perfect for the '82-'83 175 Husky.

I have three of these bikes now, four engines total, so I am reluctant to have short runs made. I would rather swap to a rod that allows me to walk into any Yamaha dealership in the world and order an off the shelf piston, or order one from any online source.
 
Kartwheel68 said:
Yes, I talked to more than one place that would make any piston I could send as a sample in runs as low as 8 pistons in two sizes for around $150-200 each including rings. If I was going to have one made it would be the '83 piston since it will work with the stock rod without the spacer plate. The reason for the rod change is twofold. One, the stock rod is too short, the bike will run much better with a longer rod. Two, since the new rod also has a 16mm pin, it will allow use of Yamaha Banshee ATV pistons which go from 64mm stock up to 66mm which is perfect for the '82-'83 175 Husky.

I have three of these bikes now, four engines total, so I am reluctant to have short runs made. I would rather swap to a rod that allows me to walk into any Yamaha dealership in the world and order an off the shelf piston, or order one from any online source.
Click to expand...

Makes sense, thanks for the explanation.
 
Ahh...the Banshee piston
closest to the 83
any idea when long rod available? I would be interested as well for my 83 which is on a relativeley fresh bore and piston and ring of 2nd over OEM

Joe
 
The rod is available now from EuroRods, Phillip has them on his site. It fits a bunch of different bikes, Aprilias, Cagivas, KTMs etc. Its available in 105mm and 110mm, 110mm is the common size for most 125s but the 105mm might work better with this combination and still get an 8mm longer rod than stock. The down side to the Aprilia/Cagiva/KTM rod is you will have to use a Husky big end pin, or have a machine shop shorten the kit pin. The Husky pin is 48mm wide and the kit pin is 54.5mm. One thing about the Banshee piston, there are two configurations, one for the regular crank, and one for the "long rod" crank. The "long rod" Banshee piston has a shorter wrist pin height, which allows us to use a smaller spacer than with the standard Banshee piston.

I am not going to keep all this stuff a secret, once I build an engine with this rod/Banshee piston and get everything worked out so I am sure it works, I will post all the details so anyone can duplicate what I have done. All the parts will be readily available and other than the spacer plate there is nothing "proprietary" or special. When I have my spacer plate made I plan on making at least 4, at that time if some of you guys want one made I will front the cost for the entire run and sell them only for what it cost me to have each made. I have no interest in making any money off this stuff, but it could save people the trouble of making their own and lower everyone's individual spacer plate cost by having more made.
 
Kartwheel68 said:
The rod is available now from EuroRods, Phillip has them on his site. It fits a bunch of different bikes, Aprilias, Cagivas, KTMs etc. Its available in 105mm and 110mm, 110mm is the common size for most 125s but the 105mm might work better with this combination and still get an 8mm longer rod than stock. The down side to the Aprilia/Cagiva/KTM rod is you will have to use a Husky big end pin, or have a machine shop shorten the kit pin. The Husky pin is 48mm wide and the kit pin is 54.5mm. One thing about the Banshee piston, there are two configurations, one for the regular crank, and one for the "long rod" crank. The "long rod" Banshee piston has a shorter wrist pin height, which allows us to use a smaller spacer than with the standard Banshee piston.

I am not going to keep all this stuff a secret, once I build an engine with this rod/Banshee piston and get everything worked out so I am sure it works, I will post all the details so anyone can duplicate what I have done. All the parts will be readily available and other than the spacer plate there is nothing "proprietary" or special. When I have my spacer plate made I plan on making at least 4, at that time if some of you guys want one made I will front the cost for the entire run and sell them only for what it cost me to have each made. I have no interest in making any money off this stuff, but it could save people the trouble of making their own and lower everyone's individual spacer plate cost by having more made.
Click to expand...

Any luck getting all this to work? My 83 XC175 has been paitently waiting for a new top end.
 
You must log in or register to reply here.
Back
Top