Eddie Gaines
Husqvarna
AA Class
What would cause a new seal to go bad,engine was rebuilt right side, viton seal.
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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 The previous version was outdated and no longer supported.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!
Right side seal
- Thread starter Eddie Gaines
- Start date
Husqvarna
justintendo
klotz super techniplate junkie
improper installation, worn crank stub
fran...k.
Husqvarna
AA Class
Vinton does not really mean much to me. I think in terms of double lipped. At least that one can be changed without splitting the cases. It resides in an aluminum piece held on with four small machine screws behind the I guess it is an alternator. (for the stuff I have, no year or model in this thread that I see)
As to possible reasons to fail.
Sat on shelf for many years
Spring that goes around the inner lip escaped
Heat damage from positioning the bearing
Maybe the lower end filled with liquid perhaps race gas containing dangerous chemicals. Only seal I had go bad was the big one on the other side and that engine had some strange corrosion on the connecting rod. (and it was not new) It was an auto so not magnesium case.
Fran
As to possible reasons to fail.
Sat on shelf for many years
Spring that goes around the inner lip escaped
Heat damage from positioning the bearing
Maybe the lower end filled with liquid perhaps race gas containing dangerous chemicals. Only seal I had go bad was the big one on the other side and that engine had some strange corrosion on the connecting rod. (and it was not new) It was an auto so not magnesium case.
Fran
markt2
Husqvarna
AA Class
Back when I was racing I had a brand new ignition side crank seal fail immediately on a fresh rebuild... Honda two stroke... cost me a race and a piston.
Honda gave me a new seal after a factory inspection revealed a manufacturing defect. (I didn't see anything wrong with it, nor did the local dealer, dealer sent it to Honda). I knew it was a bad seal because I learned to pressure test a failed engine before teardown.
That "bad brand new seal" experience taught me to always pressure (and vacuum) test a two stroke even when new parts are used. You just never know.
(A few years ago I had a brand new YZ85 from the dealer with a fairly significant intake manifold leak... I pressure tested it before it was ridden for the first time... )
Honda gave me a new seal after a factory inspection revealed a manufacturing defect. (I didn't see anything wrong with it, nor did the local dealer, dealer sent it to Honda). I knew it was a bad seal because I learned to pressure test a failed engine before teardown.
That "bad brand new seal" experience taught me to always pressure (and vacuum) test a two stroke even when new parts are used. You just never know.
(A few years ago I had a brand new YZ85 from the dealer with a fairly significant intake manifold leak... I pressure tested it before it was ridden for the first time... )