Discussion
Hi
New to the forum. I am lucky enough to own an Escort Cossie.
The engine is dry sumped and that's when the problem begins.
When the engine isn't running there is a leak from the crankshaft seal. Call me old fashioned
but oil is too expensive to paint the garage floor with.
With the engine running the leak goes.
Any help advice greatly appreciated
Many thanks
Terry
New to the forum. I am lucky enough to own an Escort Cossie.
The engine is dry sumped and that's when the problem begins.
When the engine isn't running there is a leak from the crankshaft seal. Call me old fashioned
but oil is too expensive to paint the garage floor with.
With the engine running the leak goes.
Any help advice greatly appreciated
Many thanks
Terry
Gentlemen thank you for your replies. I have asked around and this seems to be a common problem when using a dry sump
I really don't want to take the engine out. The engine has only run for 40 minutes since the seal was replaced.
I have considered a non return valve but would be worried that it would fail under competition conditions.
Thanks again everyone
Terry
I really don't want to take the engine out. The engine has only run for 40 minutes since the seal was replaced.
I have considered a non return valve but would be worried that it would fail under competition conditions.
Thanks again everyone
Terry
A common reason for crank oil seals to not seal is the incorrect surface finish on the crank journal the seals rubs on. This should have a light cross-hatch scored finish like the cross-hatch in a cylinder after boring and honing. This allows the new seal to bed in. If a shiny groove has worn into the journal then it needs going over with 120 grit wet and dry to rough it up a bit.
Speedi-Sleeve, by SKF
A well known device, in industry and automotive work, from an industrial leader. It's not a gimmick, but a very thin tube that is a tight fit over the shaft that is leaking, It comes with a flange and a tool to insert it with, you then tear off the flange and refit the part with the shaft. See: https://www.skf.com/uk/products/seals/industrial-s...
Follow the link on that page, bottom right, to "Related Documents - SKF Speedi-Sleeve" for a detailed installation guide.
They are very good when, for whatever reason, a groove has been worn in the shaft. No amount of polishing will deal with that.
They come in an enormous range of sizes - there will almost certainly be one to fit your shaft.
And, depending on the situation, it may be possible to fit it without removing the shaft. If the oil seal is held in a removeable housing, then just do that, fit the sleeve and refit the housing. A new seal is advisable.
JOhn
A well known device, in industry and automotive work, from an industrial leader. It's not a gimmick, but a very thin tube that is a tight fit over the shaft that is leaking, It comes with a flange and a tool to insert it with, you then tear off the flange and refit the part with the shaft. See: https://www.skf.com/uk/products/seals/industrial-s...
Follow the link on that page, bottom right, to "Related Documents - SKF Speedi-Sleeve" for a detailed installation guide.
They are very good when, for whatever reason, a groove has been worn in the shaft. No amount of polishing will deal with that.
They come in an enormous range of sizes - there will almost certainly be one to fit your shaft.
And, depending on the situation, it may be possible to fit it without removing the shaft. If the oil seal is held in a removeable housing, then just do that, fit the sleeve and refit the housing. A new seal is advisable.
JOhn
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