Water pump bung O rings size !

[tony g]

Hi I bought a club water pump bung to use with an electric pump. On fitting the O rings have shaved going in and a leak subsequently even though they were lubed, so now I need to know the O ring size so I can get some more asap. Any help appreciated.

Cheers

Tony

[Mad Mart]

The club have replacements Tony. I would look at the mating surfaces to make sure they are clean. I always use a bit of grease when replacing the pumps.

[tony g]

The surfaces are good Mart and the o rings covered in Vaseline. Tight going in IMO. If I can get the sizes I may be able to get some local. Im suspecting the o rings are too thick on the ones I had hence the need for the usual size. Put me back a bit now so need to get moving quickly if I can before I lose the love

Tony

[tony g]

After no info on the club supplies o rings size I made my own and now its all good. Bit disappointed that we couldnt get the sizes here

Tony

[Jon Tilson]

Not that many on here use the ewp and bung.
so I cant say I'm that surprised.

Numbers using the forum also seem to be in decline...so spread the word...

Jonners

[tony g]

Yes I have noticed the speed of the forum has slowed. FB maybe?
I hoped we could have come up with the o ring sizes from the whoever makes and specs the bung really, but as time was against me I didn't want to wait for replacements from the club to arrive so I made some. Has worked out ok in the end.

Tony

[bodgerben]

...
I hoped we could have come up with the o ring sizes from the whoever makes and specs the bung really...
Tony

Sorry to hear it's been a challenge for you Tony, some blocks are tight, I always trial fit the bung with no O rings, then if appears too tight I get out the wet and dry or hone the block, I don't know why but some blocks are very tight.

As for O rings, the spec was per the original water pump, any supplier should do. We've not made any for a while as the original supplier is no longer with us and lots of Stag places do alloy ones now. That said, a few race/track cars use the club bung. I can't remember seeing a race car using a standard pump.

[tony g]

Yes Ben, its one of many challenges Ive had to get over. I was just frustrated by it all really.
The bung with no o rings on went into the block no problem, I did that first. With the 2 o rings on and covered in Vaseline it took quite a bit of force to pop in. On removal as said before the o rings were shaved hence my request for the correct sizes.

After that I had some o rings in a Unipart bottom end set so I put those on thinking the logic would be the o rings would be the same as stock pump. These felt really loose and a pressure test showed them to be not what I needed.

Eventually I used some trial and error fitting and came up with a pair that fitted nice and no leaks so far
Although a lovely looking piece I feel maybe a little note in there with fitting tips could be of help to others and the tapped hole should maybe be M10 now as I struggled to find a bolt to fit it. My UNF /UNC stash is only from this car and any bits Ive bought. Just a thought.

Cheers

Tony

[RJF_70]

Is she in and running then Tony? Will have to pop over and check it out
Rich

[tony g]

Hi Rich yes Ive had it running a few days now and just sorted the electric water pump out etc. Still got a fair bit to finish before its road ready but getting there a weekend at a time lol.

Tony

[shaunroche]

Hi Tony...I'll be fitting an electric pump any time soon, could you post some pics of the installation please? Have you used the std rad?

[tony g]

yes I'll post pics when I compile it all. I looked at Mad Marts pics of his and I ended up in the same place as him. Im using a fiesta rad and a Mini One expansion bottle placed behind the strut tower on the drivers side against the bulkhead. Seems ok so far

Tony

[tony g]

Basically a nearly straight bottom hose to pump the a short 90 degree from pump to water housing. Ive angled the pump so it can move a bit without hitting the block or chassis. The ewp 80 is not recommended to be fixed with a bracket.

IMG_20150615_154415 by tg1mm, on Flickr

[tony g]

The mini expansion bottle

IMG_20150615_154439 by tg1mm, on Flickr

[shaunroche]

Very sexy Tony! Is it a Davis Craig one and have you plumbed it as you would a standard system?