Lotus Elan

Crank shaft bearings

PostPost by: street » Tue Dec 01, 2020 7:03 pm

Hi, keeping supplier anonymous, my new shell bearings arrived today, the underside are covered in surface rust. Do I clean them with fine paper or send back.

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PostPost by: Donels » Tue Dec 01, 2020 8:42 pm

I have never seen shell bearings with surface rust. They are usually protected by wax paper or similar, so you question the age and storage conditions. I would return and get some from another supplier.
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PostPost by: elans3 » Tue Dec 01, 2020 10:44 pm

Absoluitely, poor service and QA on their part !
Current :- Elan S3 DHC SE S/S 1968,
1963 Alfa Giulia Ti Super Rep.
Previous :-
Elan S3 DHC SE SS 1968,
Elan S3 DHC S/E 1966
Elan S3 FHC Pre-Airflow 1966
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PostPost by: street » Tue Dec 01, 2020 11:23 pm

The paper wrapping them looks very old, absolutely no protection, one is even gouged i will be one the phone later. Hopefully theey are not trying to pull a fast one as I live in NZ
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PostPost by: promotor » Wed Dec 02, 2020 7:45 am

Have you any photos of the bearings to show?

If the bearings are new old stock and not newly manufactured this is a regular problem (not to say it's acceptable).

Some NOS bearings have some deterioration to the bearing face where they look discoloured - this is also an issue.
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PostPost by: nmauduit » Wed Dec 02, 2020 9:45 am

not the best for a blueprinted engine, but if in a pinch and eager to get going, I would rather use scotch brite, to smooth out any protruding rust bits that may prevent proper seating (avoiding to embed particles in the soft bearing material). Once in oil, corrosion is not likely to resume...
S4SE 36/8198
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PostPost by: street » Wed Dec 02, 2020 9:47 am

702A6C91-73ED-493A-B6D4-5988D5180E99.jpeg and
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PostPost by: street » Wed Dec 02, 2020 9:48 am

Internals are fine
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PostPost by: street » Wed Dec 02, 2020 9:49 am

Outside face. 1st one has had some light 1000 gauge paper on it
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PostPost by: promotor » Wed Dec 02, 2020 1:05 pm

street wrote:Outside face. 1st one has had some light 1000 gauge paper on it


Is it definitely not protective grease that has discoloured them?

The don't look like proper spec bearings for a Twincam - they look like standard duty Silicon Alloy. Original bearings were heavy duty lead/bronze with lead overlay - they have a dull look whereas those in your picture look shiny?

I'm sure plenty of people have fitted that type of bearing without issue but just thought I would mention it in case you aren't aware.
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PostPost by: street » Wed Dec 02, 2020 5:54 pm

These are from SJS so would of thought they are the right spec
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PostPost by: RichardHawkins » Wed Dec 02, 2020 7:29 pm

This is a bit off topic. When I last had any machining work done, the bearings that the machine shop supplied came from Tasmania, and I think the company was ACL. I know you are not in Tasmania, but that is much closer than the UK. Might be worth checking with ACL, before sending your scruffy set back to the UK.

Hope this helps,

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PostPost by: Donels » Wed Dec 02, 2020 8:38 pm

In my dealings with SJS I have always found them to be fair and helpful. I would suggest you email those pictures to them and see their response.
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PostPost by: promotor » Wed Dec 02, 2020 9:27 pm

street wrote:These are from SJS so would of thought they are the right spec


What brand and part number are they? Clevite?
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PostPost by: rgh0 » Thu Dec 03, 2020 3:28 am

Looks like old stock that has been opened years ago and then not properly rewrapped and stored. New bearings these days come seal in shrink wrap and typically have a very thin layer of oil on them to protect inside the packaging.

I personally would return as unsuitable given the corrosion and buy new stock bearings which should be available locally in NZ through autoparts suppliers from ACL

cheers
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