Lotus Elan

Wanted: Stromberg piston and needle

PostPost by: yvesmontreal » Sat Jan 20, 2018 3:17 am

One of the Strombergs on may TC has been buggered up by a gorilla: the adjustment nut is stripped and the set screw for the needle is seized. For good measure, the needle has been gripped with pliers.

Does anybody have any of the following, in usable shape?
- a 1 3/4'' Stromberg piston
- a B2AR needle
- the nut and set screw for the adjustable needle

Thanks
Yves in Montreal
1969 Elan S4 DHC
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PostPost by: types26/36 » Sat Jan 20, 2018 8:54 am

Burin carbs sell parts for Strombergs.
http://zenithcarb.co.uk/?SID=ba5ma79dk4 ... ore=zenith
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PostPost by: oldelanman » Sat Jan 20, 2018 11:18 am

Is this the set-up you have ? ......
carburettor-overhaul-001.jpg and

If it is, and the needle and grub screw are jammed in the piston, I would suspect that the wrong grub screw has been used. The correct item has a spring loaded plunger which engages with a slot in the needle carrier preventing rotation but allowing vertical movement for adjustment, it cannot clamp the needle carrier fully. If that is what's happened and the needle can't move any attempt to adjust will just screw the adjuster plug out of the needle carrier, pushing the retaining spring washer up the bore of the piston - the thread may not be stripped at all.
As the needle is damaged anyway you may be able to carefully drill out the grub screw to remove it, then you would only need a new needle assembly and correct grub screw which are probably relatively cheap items.
Apologies if this is all obvious or you've tried it already.
Gower and Lee is another source for Stromberg parts.....
http://www.gowerlee.dircon.co.uk/Stromberg.html
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PostPost by: yvesmontreal » Sat Jan 20, 2018 12:02 pm

Yes, this is what it should look like once taken apart...

Using the wrong set screw is one cause I hadn't thought of. Yes, I will try saving the piston as you suggest.

The B2AR needle seems to be specific to Elan applications, the only sources I have seen so far are Burlen and Kelvedon.
Yves in Montreal
1969 Elan S4 DHC
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PostPost by: oldelanman » Sat Jan 20, 2018 12:32 pm

yvesmontreal wrote:
The B2AR needle seems to be specific to Elan applications, the only sources I have seen so far are Burlen and Kelvedon.


Give Gower and Lee a try as well .. [email protected]
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