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 The previous version was outdated and no longer supported.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

1974 CR 250 Dellorto 36mm jetting challenge!

k1llerapp

k1llerapp

Husqvarna
AA Class
Hi Folks

Has anyone had any experience jetting up a 36mm Dellorto PHBE 36 AS carb on a 1974 CR 250?
A friend of mine is trying to get it setup and I would just like to know if there are some base line settings I can start with?

The current set up is as follows:

sea level based in UK.

40 Slide
Needle h9
Needle middle clip (out of 3)
Pilot jet 45
Main jet 175

From what he has already told me it sounds like it is running too lean as it is difficult to start, there is a flat spot on transition up to the main jet and then she runs hot.

Any pointers would be great!

Many thanks un advance :-)

Cheers

Stuart
 
There is a choke jet for the stating issue.Your settings don't seem that far off.Your friend will just have to keep at it.You will end up with good running 250
 
Thanks!
I have found that he removed the plastic insert from the inlet manifold as it was too small - seems too much air could be being sucked in via the "slits" on the inlet - have now sealed externally with some rubber tubing and ally tape - will try this afternoon to see if there is improvement before starting with internals ;-)
 
Just tested and she fired up with a few kick's with a larger pilot jet balanced out the tick over.. seen to be running a little rich down the bottom now, so much have been sucking quite a bit of air!

We will take her out to a track in the week for final balance - but seems like the baseline above was a very good starting point! I will share the outcome for folks if they wish to go the Dellorto route!

Cheers

Stuart
 
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