Lotus Elan

Oil filler cap seal leaking

PostPost by: ericbushby » Tue Oct 12, 2021 7:47 am

DSCF0676.JPG and
Good morning all.
I am having trouble with the filler cap on the cam cover leaking.
i have not yet found the correct three eared cap and so far I have avoided buying the reproduction one.
This cheapo `tin pot` cap has worked very well for ten years but is now leaking.
I have cut a few seals out of various materials but with only short term success.
Can you suggest a source for the correct seal or suggest what material to make one from.
The search facility on this forum is still not working.
I have checked ebay and the local car parts shop and I have oil deflector plate over the No4 cam.
Any advice will be welcome
Eric in Burnley
1967 S3SE DHC
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PostPost by: pharriso » Tue Oct 12, 2021 10:21 am

Eric, I bought replacement seals from QED (part # 103029) https://qedmotorsport.co.uk/product/oil-filler-cap-seal/ but that did not completely solve the issue.

ericbushby wrote:..... and I have oil deflector plate over the No4 cam.


Strange, that did solve the issue for me...
IMG_2359.jpg and


Not my original idea, copied from John Clegg & others...

Feel free to copy the design...
CylinderHeadOilSplashplate.pdf
(75.48 KiB) Downloaded 45 times
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PostPost by: ericbushby » Tue Oct 12, 2021 4:29 pm

Thanks Phil, I have ordered a couple.
Eric
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PostPost by: h20hamelan » Tue Oct 12, 2021 5:38 pm

I have gone to silicone on my NA and boosted vehicles.
$2 or £1 because they dont distort like rubber.
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PostPost by: Quart Meg Miles » Tue Oct 12, 2021 10:18 pm

Off piste: How long does it take to fill the sump with an oil deftector like that fitted? It's bad enough without.
Meg

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PostPost by: baileyman » Wed Oct 13, 2021 12:30 am

No difference in my experience. And with the deflector, less frequently adding, as a bonus!

I find the deflector need not be bolted on as it is trapped by the cam cover studs. john
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PostPost by: john.p.clegg » Wed Oct 13, 2021 7:46 am

A few photos, just a small shaped piece of Ali ( Aluminium,Aluminum )

oil1.jpg
oil1.jpg (115.41 KiB) Viewed 235 times


oil2.jpg
oil2.jpg (136.79 KiB) Viewed 235 times


oil3.JPG and



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PostPost by: ericbushby » Sat Oct 23, 2021 2:26 pm

Thankyou Phil, That`s fixed it.
I bought two of the seals you suggested and had to fit both to obtain a satisfactory fit. I assume that was because the cap is rubbish from China. Another leak stopped. OK for now.
Eric in Burnley
1967 S3SE DHC
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PostPost by: pharriso » Sun Oct 24, 2021 11:47 am

Glad to hear Eric :D
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