Lotus Elan

Diff drain plug thread size

PostPost by: friedy » Sun Jun 14, 2015 4:33 pm

I've been struggling to remove the drain plug from my diff. :roll: The hex is already chewed up and a socket slips off before undoing. So I'm going to have to really go for it :x and it won't be worth putting back!
Can anyone tell me what size the thread is so I can hopefully get a steel replacement before I destroy the original.
Thanks
Alan.
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PostPost by: billwill » Sun Jun 14, 2015 6:56 pm

We did that on here earlier this year I think, so a search should throw it up.

I am pretty sure that the drain plugs on the diff are standard domestic plumbing parts, so you can probably get a new one at places like B&Q


Here's one old topic that says they are standard 3/8 plumbing plugs.
elan-archive-f16/lotus-parts-the-hardware-store-t9583.html

This one says it is 1/2" BSP
lotus-gearbox-f37/differential-filler-plug-replacement-t29232.html

Bombay Racing Green wrote:Just back from the plumber's merchant's. Indeed, AHM, it is a 1/2 BSP plug with an 18 mm hex head. The drain was an 8mm plug apparently. Two of each and fibre washers, ?6.

Thanks for the help.

Pete
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PostPost by: friedy » Sun Jun 14, 2015 9:31 pm

Thanks Bill . I been searching for ages and not found these threads. I know mine has 1/2" hex so doubt it's 1/2"bsp expect it's 3/8 then.
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PostPost by: CBUEB1771 » Mon Jun 22, 2015 9:32 pm

The fill, breather and drain plugs are 1/2, 3/8 and 1/4 BSPP, respectively.
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PostPost by: friedy » Tue Jun 23, 2015 5:07 pm

Ok Thanks for the info.
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