Lotus Elan

Headlight vacuum fix

PostPost by: Foxie » Fri Aug 14, 2020 8:20 pm

When I had a problem with the headlight vacuum a while back, I made up these little locks from Builders Metal Strip.

Avoided that dreaded headlight sinking at open throttle on the motorway :o
Headlight stay.jpg and
68 Elan +2, 70 Elan +2s
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PostPost by: wotsisname » Sat Aug 15, 2020 7:17 am

Hope I don't need it, but a useful idea for us non failsafe +2 owners.
Am currently sorting my vacuum system. A vacuum gauge (Amazon) is proving very illuminating and my problem quickly traced to the dash switch and /or the fit of the short connectors to the main pipes.
1968 Elan plus 2 - project
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
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PostPost by: Sploder90 » Sat Aug 22, 2020 1:46 pm

Quite an inventive "failsafe" I like the simplicity.
I've gone a bit left field (added some weight.. Sorry Chunky) and installed a vacuum pump & pressure switch. Seems to work fine and so have now blanked the inlet manifold but it could be run in conjunction with the manifold port like a lot of moderns do for brake servo
easy to return to standard if needs be & they go up & down just as sedately as before.
Hope will also make the fuelling a bit more consistent.
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