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 The previous version was outdated and no longer supported.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

Wrong Rod?

84scrambler

84scrambler

Husqvarna
Pro Class
Hey Guys, I believe I have found my problem that has been hendering me for quite some time.
After a long resto. on my 79 wr 250 and 4 case splits I measured the connecting rod in the engine and found that it is 125mm long eye to eye and was told by a reliable resource that it is so posed to be 135mm.
So it looks like I am in need of a con. rod and I have one to trade or sell. I think the one I have is for a early 250 I am not sure where the split is for the longer rod maybe around 76?or so and goes to 84 ish maybe.
Next is to find one and where ?
 
Well, on the pdf files on here it just list them by a kit but the number is 1610 674-01 for the 79 and I checked the 80 and 78 and the parts rod kit numbers are different but that could be because of other parts ? I'm not sure.
 
with 10 mm too short rod i doubt the engine would have run .if it did very lousy
and would the piston even clear the crank at bdc ?
 
Your right streaker, barley ran mostly just popped and a small back fire.
Although it did clear the crank by very little .
 
The non primary kick 250s as I understand had a shorter con rod but thought it was 130mm center to center. Check the rod to see if is says YAMAHA anywhere on it
 
Yes it was down a bit, that was what gave it away . I took the cylinder and head off all at once at first and thats why I never saw the space at the top of the stroke... untill I finally decided to slide the cylinder back on with out the head and then I seen the problem...
 
The shorter rod was for the MAG 250. Possibly the 175 too. I had a mag 250 engine. I have no clue how they get a 250cc with the shorter cylinder.

There's a Yamaha or kawie rod that's 133mm long. I think the lower width on the crank end needs to be ground narrower. The crank pin is longer and needs to be cut. The original husqvarna rod bearing has to play in the assembly it feels perfect. When were desperate what's 2mm's shorter?
 
The '75-'76 175 has a unique rod as it has a 15mm wrist pin, but the bottom end pin is the same size as the 250, so it does not use the same rod as the 125 or the 250. The '82-'83 175 rod is the same as the 125.
 
Where's the rod specs at??

There's a 133mm rod exactly like the husky but the crank pin area is wider.

Things are better parts wise than 20 years ago but the rod kits stayed the same.
 
I would think it could be a last ditch effort to make it alive again? If nothing else is a available.

What about machining a rod from 4140HT steel or A2 tool steel? They do machine rods for drag race engines. The rod can be machined and leave a few thousands for finish grinding the bores after hardening. Or the bores could be industrial hard chromed.
 
There are now many 135 rods kits back in the market place today. Forrest has them along with Phillip. They was a big need when these when these were not available as i was going to have
some kits made. I had shop lined up to make them if needed and would be priced about the same. Forrest will sell you a kit if you use his shop for rebuild.

Yes all the many models used the same 135mm just the pin width changed on the 390 for example. I have many used rods in my hoarding bin so to speak. A couple real good 500s
three new 500 four some kits and a couple new 430s or 250s. If some one needs a extra rod I may sell these extras this spring. I going to use only four this spring for new bike rebuilds
 
i think thats basically what hva factory in the uk has done, contracted it out to get some new stock made for our bikes.

edit:didnt know stahls had rods again, they really wont sell a kit unless they do the labor? is that doing the crank pressing? i can understand that i suppose. not if that means they have to do the case work.
 
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