• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

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 The previous version was outdated and no longer supported.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

TXC310 2012 vs 2013 Pistons

T

The Gazzman

Husqvarna
AA Class
Please note the following:
1. Both years have the same crankshaft
2. Both years share the same gudgeon pin (16mm)
3. Both years share the same piston ring set but have different piston kits

So whats the difference? I found a good link for Pro-x 2012 part 01.6342.A which provides the specs. Refer
https://prox-usa.com/-01.6342.a

I then compared this with measurements for the original 2013 OEM piston with approx 200 hours on it. There is some carbon build-up on the top which makes it less than completely accurate.

Please see the diagram attached below. The main area of concern is D (the compression height?). It is hard to measure with a casting ridge in the way. The piston deck is approx 14.62mm thick. Once you go the edge of the gudgeon pin then D is closer to 16.00 mm, putting it almost 1mm higher.

Would someone verify this and try to contact pro-x locally to confirm the rationale for the non-inclusion of the 2013 model. I am trying to do this in Australia without interest.

Regards
The Gazzman
 

Attachments

"D" for the OEM is closer to 16.3mm with the piston crown clean and the caliper on the raised centre. So the pro-x has a flatter crown and is about 1.3mm shorter in compression height, and would lower the compression ratio in a 2013 engine. This would be ok for someone who is skimming the head/barrels.
 
It maybe an interesting excercise to find out how many generic pistons are close to these specifications. For example who makes 81.96mm diameter pistons?
 
joedirt said:
The 2013 has a different cylinder head with different size valves. Might be some clearance issues.
Click to expand...

I suspect that is one of the many things that would need to be checked physically before proceeding. The 2013 OEM piston is dome shaped with valve indents. The 2012 Prox piston is flatter with valve indents. The prox piston, with a lower compression height in a 2013 head (1.3mm), would reduce the CR to about 10.5 to 1 if nothing else changed.
 
I would like to investigate the pro-circuit version but I cannot get any information on it to consider importing to Australia. The pro-circuit wholesaler has no interest in it. I understand that JE pistons actually produces it but no information from there either. Anybody use it or have basic specification information?
 
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