Lotus Elan

Remove Stromberg Carbs

PostPost by: TOR15T » Sun May 16, 2021 3:57 pm

Assistance please. I am either being very stupid or its difficult. I assume both carbs have to be removed together, if this is correct how do you get at the 2 nuts on the bottom of the rear carb. I can see them but getting a spanner on them is proving difficult.
Thanks for any help
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PostPost by: 69S4 » Sun May 16, 2021 5:39 pm

2 nuts? I have one nut there (and that's enough trouble to get off / replace). You need a short 1/2" ring spanner (with a piece of string attached to stop it falling into the depths - you'll drop it a lot) and multijointed fingers.
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PostPost by: bulfin » Sun May 16, 2021 8:23 pm

There is only one, but is a pita to get to. I finally cut a slot underneath a reach it through the footwell from inside. When finished, I slide some black duct tape under the carb and also put a layer from the inside. I guess water could get in there, but there are many other places as well. :D

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PostPost by: steve lyle » Sun May 16, 2021 11:56 pm

My car is a Federal Sprint, so likely a bit different than yours. There are 3 nuts holding an intermediate plate to the Federal crossover casting. There is no way I've found to get at the bottom nut of the rear carb (yes, without cutting a hole in the footwell).

The alternative is to remove the 4 nuts holding the carb to the intermediate plate. On a Federal Sprint this is doable, but I had to take a 1/2" combination wrench, cut the closed end off to shorten it, and grind it thinner to get at the nuts.

IMG_0417.JPG and
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PostPost by: TOR15T » Mon May 17, 2021 8:43 am

Thank you for your assistance, much appreciated. Being new to Lotus ownership I have a lot to learn and this site seems to be where to learn.
Thank You
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PostPost by: tonyabacus » Tue May 18, 2021 7:16 pm

You may be able to get at the nuts by removing the engine mount bolts and easing the engine up slightly to get a socket and extension on. Keep a check on the hoses, wires and oil pressure gauge line and disconnect battery.
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PostPost by: mbell » Tue May 18, 2021 7:55 pm

Probably doesn't apply here but on my +2 with webbers I use a small bit racket + socket reaching under the airbox from the front to get the lower rear nuts. Tricky to get on, but once you get it on you can normally get them off quickly.

Specifically this tool set:
https://www.lowes.com/pd/Kobalt-35-Piec ... et/3387640
'73 +2 130/5 RHD, now on the road and very slowly rolling though a "restoration"
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PostPost by: jaman » Sat Jun 05, 2021 4:13 am

steve lyle wrote:My car is a Federal Sprint, so likely a bit different than yours. There are 3 nuts holding an intermediate plate to the Federal crossover casting. There is no way I've found to get at the bottom nut of the rear carb (yes, without cutting a hole in the footwell).

The alternative is to remove the 4 nuts holding the carb to the intermediate plate. On a Federal Sprint this is doable, but I had to take a 1/2" combination wrench, cut the closed end off to shorten it, and grind it thinner to get at the nuts.

IMG_0417.JPG


You have to remove the intermediate plate from the secondary throttle body ... extract the carbs then remove the carbs from the intermediate plates.

hope this helps
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