Lotus Elan

Elan S3 Airbox

PostPost by: peterclivemartin » Wed Sep 18, 2019 9:54 am

Hi - I have an elan S3 in need of restoration - the air box is missing but the back plate is odd - I have never seen one like this before. Can any one identify it? I have attached a photo of the cam cover which I beleive might also be wrong - perhaps it had an engine change at some point?
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elan-cam-cover.jpg and
elan-air-box.jpg and
Elan S3 DHC
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PostPost by: gherlt » Thu Sep 19, 2019 8:35 am

I have no idea, but in any case, its not an Elan airbox.
The early airboxes (the round ones) are rare and expensive, so your best option is a readily available S4 airbox (more rectangular).
1964 S1 (engine ready, awainting body paint)
1967 S3 DHC (now adjusted by Brian Buckland, totally calm idle)
1969 S4 FHC (final interior stuff)
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PostPost by: TrevorJones » Thu Sep 19, 2019 8:54 am

Hi
I fitted one of those air boxes on my Vegantune headed S3 elan in 1979, I obtained the box from Quentune Motors advertising it for an S4 for ?19.95 and ?9.60 for 4 x 16mm trumpets. The air filter was a flat plate with pleated material full width and height (sorry I cannot recall which car the filter came from). The only issue with the air box was the shorter trumpets and occasional spit back soaking the filter medium.
I am still running 45's on my Elan but have opted for the TTR box, trunking and large ITG filter in the nose, works great.
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PostPost by: Elanintheforest » Thu Sep 19, 2019 8:59 am

It looks like a version of the works airbox used on the Escort Twincam and RS1600 (BDA) Escort, which uses an XJS air filter element.

Are there holes on the top (or bottom) for a bracket to secure the filter element?

Mark
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zz-works.jpg and
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PostPost by: Pastapesto » Thu Sep 19, 2019 11:44 am

Hey Mark

Hope you are well.

If you look carefully at the picture, I think you can just make out two studs on the top of the air box & sitting on the engine compartment flat area just above the master cylinders you can see a dusty bracket as there is in your picture.....I think you were spot on there Mark.... :D

All the best

A
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PostPost by: peterclivemartin » Thu Sep 19, 2019 10:06 pm

Hi - Thanks for all the info, it does have the top bracket so I think it must be the same as the photo above. I don't know whether to keep it or change it to the original.
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PostPost by: oldchieft » Thu Sep 19, 2019 11:01 pm

Might be worth a lot to a person looking for one, but if you change it out I could find a use for it on my Morgan engine.

unadjustednonraw_thumb_45aa.jpg and


(I plan to chop the wing and flichplate to make room for air box and filters.)

Best regards
Jon The Chief
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PostPost by: Andy8421 » Fri Sep 20, 2019 4:39 am

peterclivemartin wrote:Hi - Thanks for all the info, it does have the top bracket so I think it must be the same as the photo above. I don't know whether to keep it or change it to the original.


The Elan engine bay is cramped and hot. Mr Chapman, who was not known for spending money on a whim, thought it worthwhile to go to the expense of trunking and a front mounted air filter. There is also a safety argument about avoiding a fuel soaked air filter being mounted above the distributor.

I would go with the original design were it me.
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PostPost by: seriouslylotus » Fri Sep 20, 2019 6:17 pm

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PostPost by: Elanintheforest » Fri Sep 20, 2019 9:42 pm

It looks like repros are available (about 1/3rd the way down the list)....

http://www.taylormadeclassiccars.com/pa ... parts.html

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