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Parts needed for waterpump mounting on USHM3

Posted: Sun Jan 08, 2017 2:28 pm
by TvdWerf
Can someone tell what parts are needed for mounting these parts?
I can order this one at ESM:
http://www.morrisminorspares.com/coolin ... ve-p829614
but the other hole need a part to close it, I think a drain or something like that..
Sometimes the pump is on Ebay, but never seen the other parts.

Re: Parts needed for waterpump mounting on USHM3

Posted: Wed Jan 11, 2017 1:47 pm
by RobThomas
I seem to remember that the 2 bolts for this part are 8mm Metric Fine thread, not British sizes, although corrosion makes the Metric ones loose and 5/16 is about 7.95mm. Drain hole is maybe BSP thread? Try the one from the Morris 1000 radiator or even close it with weld? The drain is only there for very cold days if you want to empty the engine overnight.

Re: Parts needed for waterpump mounting on USHM3

Posted: Wed Jan 11, 2017 6:52 pm
by TvdWerf
I can re-use the original M8x1.0 bolts, but the drain is what I like to have as original as possible.
Not for cold weather, my garage has floor heating, and the car is only on the road when it is not freezing ;)

Re: Parts needed for waterpump mounting on USHM3

Posted: Wed Jan 11, 2017 8:14 pm
by RobThomas
http://www.bmcfarina.com/contents/en-uk ... iator.html ??? :D

If you can give me 1/2 hour I shall find the correct part number for it.

Rob

Re: Parts needed for waterpump mounting on USHM3

Posted: Wed Jan 11, 2017 8:21 pm
by RobThomas
163129 is the Series MM drain part number. The image in the book shows it to have a single bent arm rather than the winged arm in the link above. It also shows a washer which suggests that it is a parallel thread, not a tapering one.
The MM Radiator drain part number is ARH515, so, it isn't the same part but looks similar.

Maybe like this...? http://britishclassicspareparts.com.au/ ... mini-riley

I hope this helps.

Rob

Re: Parts needed for waterpump mounting on USHM3

Posted: Tue Jan 17, 2017 6:52 pm
by sirrom918
I've a feeling the thread in the alloy water housing should be 1/8" BSP - I'd ask ESM to confirm that this is the case - if so then the following brass drain taps on the vintagecarparts website should fit, together with a suitable fibre washer - their part numbers are: 341 & 338.
1/8" x 28 TPI BSP.

https://www.vintagecarparts.co.uk/categ ... taps-drain