Lotus Elan

Black powder and pieces of fragile foam

PostPost by: LaikaTheDog » Sun May 10, 2020 7:50 pm

today I tested my interior fan and was covered head to toe in black powdered foam..... I presume it is some kind of flap sealer in the air control system but now it is all over me... do I need to remove my dash
:( and fix this ?
User avatar
Third Gear
Third Gear
Posts: 279
Joined: 29 Oct 2003
Location: UK, London.

PostPost by: Bud English » Sun May 10, 2020 9:05 pm

Oh yeah, it's the powdered foam from the flap that seals off the heater core when in the vent (no heat) position. Here's what that entails. viewtopic.php?t=16068&p=80961

It's a pain, but worth it in the long run.
1970 +2S Fed
"Every Lotus that an owner modifies makes yours worth that much more." - You're welcome!
User avatar
Bud English
Fourth Gear
Fourth Gear
Posts: 961
Joined: 05 Nov 2011
Location: Winnemucca, NV, USA

PostPost by: wotsisname » Sun May 10, 2020 10:13 pm

The foam is possibly in there to keep the noise down, there are rubber flaps that do the sealing.. Either way.. bit of a pain. Drain coolant, remove dashboard and a lot of interior trim type of job..
1968 Elan plus 2 - project
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
Third Gear
Third Gear
Posts: 468
Joined: 24 Jun 2015
Location: Hertfordshire, UK

PostPost by: mikealdren » Mon May 11, 2020 8:06 am

The foam seals the large distribution flap to the body and, yes, it disintegrates with time. I replaced mine with foam designed for use under wood flooring, it was a suitable thickness and I reasoned that it should last well.

I probably still have some in the garage if you PM me.
IMG_2484.jpg and
Coveted Fifth Gear
Coveted Fifth Gear
Posts: 1084
Joined: 26 Aug 2006
Location: Surrey England

Total Online:

Users browsing this forum: No registered users and 18 guests