Crush Washer

Does anyone know the ID of the crush washer on the sump plug thats not on the strainer plate on an 1800, need to do the oil, I have a load of stuff in a bag from old gasket sets and I need to check if I have a washer for the job before I drain it!1

 

14mm ID, 20mm OD

 

Would these do it?
https://www.ebay.co.uk/itm/13335909...ar=432762886106&widget_ver=artemis&media=COPY

 

They would be fine. I use a solid 14mm copper washer and anneal it at every oil change.

 

Many thanks, I have five that size in me spare gasket box, I assume they are the same size as a 1600 thats why I have so many!

 

As said before just anneal the old washer.

 

OK OK, I admit I don't know how to do that. Please tell me as I really ought to know by now.

 

Heat on a fire brick or something similarly tough (not a random lump of concrete or stone that may suddenly spall hot high speed fragments if its damp..) until the copper is red hot.. a propane blow torch will do.

I use a plumbing protective mat on concrete paving - it keeps the real heat on top.
Pick the red hot copper up with a pair of pliers and chuck it carefully in some cold water. A tin can of water or a bucket full.. it is meant to cool very fast.

This makes the copper lose its work hardening and become soft again.

You can repeat this until the copper gets too flattened or grooved.

 

Or you could just buy one on eBay

 

this I got a bag of 25 for £3.50

 

Now I know, thanks Mike.
If you heat steel to cherry red and dunk it in oil, does that harden it?

 

That is adding carbon to the surface so the surface becomes harder, so I think so.

 

As I understand it, annealing is done to soften the metal so it seals better.

 

Used to use whale oil for doing that in metalwork when I were a nipper! Stops it rusting!

 

It is indeed.

 

I’ve had trouble finding the right size “14mm” washer - I’ve got loads that don’t fit. The ones marked as ‘Rover’ in Halfrauds do the job. I’ve taken to annealing the old one too - glad to know others do it too!

 

I dont think copper cares how its cooled to aneal it as long as its been up to 400°c and allowed to cool again it doent 'quench' in the traditional sense.... so I'm told by metals people.. I hang it off a piece of wire to heat up if i need to drop it in something to cool for quick use

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I tried to get some whale oil down Screwfix. Didn't have any.

Blue asbestos is out of stock as well. Useless

 

I’ve got some. Pick up only!

 

Shovel it into a bin bag and I'll collect at the weekend