Lotus Elan

Looking for S4 Door Latch assy

PostPost by: elanner » Tue Jul 16, 2019 8:16 pm

Does anybody know where I could get a pair of S4/Sprint door latches? I haven't been able to track any down.

Lotus part numbers:
036B6177 - Lock Assembly, LH
036B6178 - Lock Assembly, RH

Right now I'm looking for a left hand latch, although no doubt I'll need a right hand one when the time comes. I'm trying to make my door locks work properly.....

The picture below is for a Mini, so not quite right, but shows what I mean....

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350260001czh3528.jpg
350260001czh3528.jpg (18.51 KiB) Viewed 658 times
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PostPost by: 1owner69Elan » Tue Jul 16, 2019 9:06 pm

As I understand it the S4/Sprint door locks are from British Leyland door locks or latches as used on the rear doors of Austin 3 litre, Maxi, Austin Morris & Wolseley 1800 / 2200. They do appear from time to time but don't see any out there at the moment.

Here is a picture of mine. I'm in the process of cleaning them up. They are more squared off than the mini one you showed.

img_2464.jpg and
'69 Elan S4 SE
Street 181 BHP
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PostPost by: elanner » Tue Jul 16, 2019 9:13 pm

Yup - that's them! Anybody got one or a pair languishing in a dusty corner?
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PostPost by: MarkDa » Tue Jul 16, 2019 9:22 pm

The internals may be the same?
If you have originals perhaps you can renovate?
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PostPost by: elanner » Wed Jul 17, 2019 7:41 pm

The ones I have work fine as door latches but, so I've discovered, are missing the lever that the exterior-key-to-latch rod connects to. I've no idea why. Could they be from an S3 - where, I assume, the key operates on the handle rather than the latch?

I thought it was just a case of missing rods (btw, Sue Miller stocks these rods). My plan was to fit the rods during my current attempt to fiddle with the hinges and improve the door fit (ha - who am I kidding?).

Anyway, if I took them apart I'd still be missing the lever. Can they be non-destructively disassembled?

If anybody has a photo of the rear of the latch please post or send me via PM. I'm curious to know what it's supposed to look like.

Also, thanks to a forum member who PMed me to say that he may have a pair of latches. This forum is amazing.

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PostPost by: MarkDa » Wed Jul 17, 2019 8:18 pm

There are several photos in the gallery here.
Also a few threads on repair-refurb.
It's sometimes easier to search in Google and come back in.
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PostPost by: oldelanman » Wed Jul 17, 2019 8:41 pm

passenger-door-lock-assembly.jpg and
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PostPost by: elanner » Wed Jul 17, 2019 8:49 pm

Thanks! I forgot about gallery search. So my latches are missing the arm at the top right with the lock rod..... :-(
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PostPost by: 512BB » Thu Jul 18, 2019 7:15 am

'thanks to a forum member who PMed me to say that he may have a pair of latches'

If the forum member is unable to help Nick, I am pretty sure that I have a pair of new old stock latches that I would part with'

Best

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PostPost by: elanner » Mon Sep 09, 2019 12:37 pm

Having acquired a couple of latches (thanks, Leslie) and installing them I bumped into what appears to be a totally dumb problem. The lock rod clips.

The standard clip works with a rod with a 90 degree bend and is simple enough:
rod-clip-3.jpg and

But the rod from the latch to the interior lock (in an S4/Sprint) has a double 90 bend, so the regular clip doesn't fit:
rod-clip-1.jpg and

rod-clip-2.jpg and

There must be a slightly different type of clip for this situation but I've never seen a reference to one. I showed this conundrum to Ray at LOG a couple of weeks ago and he wasn't aware of different clip types.

Surely somebody has noticed this and figured it out?

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PostPost by: oldelanman » Mon Sep 09, 2019 1:07 pm

Maybe you have the rod back to front ? Not certain but I think the end with the double bend goes into the hole in the top of the locking flap and has no clip. The rods are also handed so you might need to swap sides too.
Last edited by oldelanman on Mon Sep 09, 2019 1:14 pm, edited 1 time in total.
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PostPost by: MarkDa » Mon Sep 09, 2019 1:12 pm

+1 to that - got beaten to the reply!
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PostPost by: elanner » Mon Sep 09, 2019 2:00 pm

oldelanman wrote:Maybe you have the rod back to front ? Not certain but I think the end with the double bend goes into the hole in the top of the locking flap and has no clip. The rods are also handed so you might need to swap sides too.


Nope - sadly not. The end that goes into the locking flap at the handle (and has no clip, as you mention) is a simple 90 degree bend.

The double bend allows the rod to clear part of the door fibreglass/window frame (the trim is on the door right now so I can't post a photo). So it's not as though I could simply make up a rod without the double bend and use it instead. Sue Miller supplied me with both roads, marked Left & Right, and I'm confident that they're correct.

However, I could possibly make up a rod with a longer dog leg so that the clip has room to lock in place - I'll check that the next time I get the trim off to continue with this little episode. I was just hoping that somebody was aware of some hitherto unknown clips....

The very simplicity of this thing makes it impossible to screw up, right? :-)

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PostPost by: MarkDa » Mon Sep 09, 2019 2:32 pm

Have a look at this parts diagram and compare to your arrangements.

http://redirect.viglink.com/?format=go& ... 7.02%20KiB)%20Viewed%20692%20times%22%3E

I fear that 'simplicity' may not preclude 'screw up'
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PostPost by: oldelanman » Mon Sep 09, 2019 2:38 pm

screenshot-from-2019-09-09-15-23-43.png and


This time you beat me to it Mark .. :lol:
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