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 The previous version was outdated and no longer supported.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

Late 70's early 80's Cylinder Head identification help.

1982 XC 430

1982 XC 430

Husqvarna
AA Class
I have an early 84 250 WR that is the last of the Air Cooled Heads. Metal from a Cracked Liner dented the Combustion Chamber. I could weld it up and machine it but since these Heads don't sell for all that much why not just buy another one. Only problem is I'm not sure what Years are the same Head. At some point the Spark Plug was rolled over to the side to clear the Exhaust that is cutting threw the Frame ( 82 ?). E-bay is all over the board, I see Angle Plug heads being sold as 77's and Straight Plug Heads being sold as 84's. Besides the Angle of the Plug is there anything else different ? Combustion design ?
 

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I'm not sure, the 78+ engines might have since they have pipes similar to the later bikes but I can't say for sure.
 
1982 XC 430 said:
I have an early 84 250 WR that is the last of the Air Cooled Heads. Metal from a Cracked Liner dented the Combustion Chamber. I could weld it up and machine it but since these Heads don't sell for all that much why not just buy another one. Only problem is I'm not sure what Years are the same Head. At some point the Spark Plug was rolled over to the side to clear the Exhaust that is cutting threw the Frame ( 82 ?). E-bay is all over the board, I see Angle Plug heads being sold as 77's and Straight Plug Heads being sold as 84's. Besides the Angle of the Plug is there anything else different ? Combustion design ?
Click to expand...


82/84 primary kick A/C 250's had angled spark plug holes. 75-81 250's had straight spark plug hole, 75-79 250's had the narrow stud spacing. 80-84 250's had the wider stud spacing.

Marty
 
OK, so what I gather is that there is the ;

75-79 Straight Plug narrow Stud Pattern

80-81 Straight Plug wide Stud Pattern

82-84 Angle Plug wide Stud Pattern.

If true there is no such thing as an Angle Plug Head that has the wrong Stud Pattern, and that the only ones easy to mix up are the 79 to 80 switchover to the wider Stud pattern. This should be true for the 250's, I would assume that the open Class bikes follow suit as well. And 125 are a whole different story.
 
1982 XC 430 said:
OK, so what I gather is that there is the ;

75-79 Straight Plug narrow Stud Pattern

80-81 Straight Plug wide Stud Pattern

82-84 Angle Plug wide Stud Pattern.

If true there is no such thing as an Angle Plug Head that has the wrong Stud Pattern, and that the only ones easy to mix up are the 79 to 80 switchover to the wider Stud pattern. This should be true for the 250's, I would assume that the open Class bikes follow suit as well. And 125 are a whole different story.
Click to expand...


Yes this would also be true for the open class bikes. Except the 79 390 auto started going to the wide stud spacing.

Marty
 
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