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Water pumps
Posted: Sun Dec 19, 2021 9:14 pm
by colonel mustard
Hi all,
I have pulled the engine out today and discovered the newly installed water pump earlier this year is leaking, quite badly.
Looking at either the mini spares or MED units, apart from the cost what is the actual difference, if any between these items?
http://minispares.com/product/Classic/C ... o%20search
https://www.med-engineering.co.uk/water-pump-925
Thanks in advance
Re: Water pumps
Posted: Sun Dec 19, 2021 9:51 pm
by Peter Laidler
If I was you Colonel, I'd be looking at a rebuilt original cast unit. I put one, rebuilt by a member here ages ago and it's given perfect service ever since. All original but with new bearings and seals.
Re: Water pumps
Posted: Sun Dec 19, 2021 11:34 pm
by minibitz
The both took like the same pump to me.
Swiftune version appears to be an MS pump with £15 markup on it.
I've been using the MS EVo pumps since they were introduced and have yet to replace one or had any other issues with them.
I always check the impeller is pressed fully into position and also that all the internal flashings from the casting have been removed.
Have had lesser quality pumps with impellors either catching or too far away from pump body and also had flashing left inside pump body completely blocking inlet from bottom hose.
Re: Water pumps
Posted: Sun Dec 19, 2021 11:45 pm
by AndyPen
minibitz wrote: ↑Sun Dec 19, 2021 11:34 pm
The both took like the same pump to me.
Swiftune version appears to be an MS pump with £15 markup on it.
I've been using the MS EVo pumps since they were introduced and have yet to replace one or had any other issues with them.
I always check the impeller is pressed fully into position and also that all the internal flashings from the casting have been removed.
Have had lesser quality pumps with impellors either catching or too far away from pump body and also had flashing left inside pump body completely blocking inlet from bottom hose.
Yes definitely check, I had an Evo one cause me all kinds of issues and head scratching. When I finally removed it, the casting was still there - with the result that no water flowed at all. I had the same problem with my genuine Ford RS500 one, but was able to drill that out in the engine bay with the rad removed. Maybe not that rare, or maybe I am just unlucky?
Re: Water pumps
Posted: Mon Dec 20, 2021 7:46 am
by OzOAP
minibitz wrote: ↑Sun Dec 19, 2021 11:34 pm
I've been using the MS EVo pumps since they were introduced and have yet to replace one or had any other issues with them.
Same here. Just give them a check over, like you should do with everything nowdays. Never had any issues.
Re: Water pumps
Posted: Mon Dec 20, 2021 8:41 am
by Desmodromic
Another vote for the MS Evo pump from me, works well, and has not leaked since fitting. As others have said, definitely inspect carefully before fitting
Re: Water pumps
Posted: Mon Dec 20, 2021 1:20 pm
by Andrew1967
Peter Laidler wrote: ↑Sun Dec 19, 2021 9:51 pm
If I was you Colonel, I'd be looking at a rebuilt original cast unit. I put one, rebuilt by a member here ages ago and it's given perfect service ever since. All original but with new bearings and seals.
Agree with Peter, get an old cast iron one rebuilt like I have for myself and a few on here .
Re: Water pumps
Posted: Mon Dec 20, 2021 9:29 pm
by AndyPen
Andrew1967 wrote: ↑Mon Dec 20, 2021 1:20 pm
Peter Laidler wrote: ↑Sun Dec 19, 2021 9:51 pm
If I was you Colonel, I'd be looking at a rebuilt original cast unit. I put one, rebuilt by a member here ages ago and it's given perfect service ever since. All original but with new bearings and seals.
Agree with Peter, get an old cast iron one rebuilt like I have for myself and a few on here .
That is what I am doing - thanks to Andrew
Re: Water pumps
Posted: Mon Dec 20, 2021 9:58 pm
by Peter Laidler
Maybe Mechanical Maestro Andy ought to do a 'how to fix it' article......., when he's finished is book about restoring HOY!
Re: Water pumps
Posted: Mon Dec 20, 2021 10:06 pm
by Andrew1967
It's easy Peter.
Remove from engine, put it in a box and send up to Paul King (not he of the 80's band King) at E P Services.
Once returned, usually within three days, paint and re-fit
Re: Water pumps
Posted: Tue Dec 21, 2021 3:39 am
by cmiller
Not to hijack this thread but the website for E P is not functional. At least here in the States. I remember they used to sell the kit or parts for us do-it-yourselfers. Looking for a current contact address.
Chris Miller
Re: Water pumps
Posted: Tue Dec 21, 2021 6:12 am
by Andrew1967
Their site is under construction still .
I’ll dig out Pauls contact details
Re: Water pumps
Posted: Tue Dec 21, 2021 8:06 am
by Andrew1967
Re: Water pumps
Posted: Tue Dec 21, 2021 9:38 am
by Alex
As should be the case with all fixings, make sure you torque the EVO pumps correctly and don't go full-gorilla and do them up FT.
The rounded profile sealing face can pinch-cut through a gasket if it's done up too tight.
Re: Water pumps
Posted: Thu Dec 23, 2021 8:03 pm
by colonel mustard
Thanks All,
Have sorted a new EVO pump along its gaskets and new bolts, potentially looking at up using some gasket sealer, any thoughts / recommendations?
Thanks
Also to add I have an op.Timon of using the paper gasket that comes with the EVO unit or I have one of these:
https://www.med-engineering.co.uk/med-water-pump-gasket
Re: Water pumps
Posted: Fri Dec 24, 2021 12:00 am
by iain1967s
colonel mustard wrote: ↑Thu Dec 23, 2021 8:03 pm potentially looking at up using some gasket sealer, any thoughts / recommendations?
I use a thin smear of Permatex aviation form-a-gasket #3 on both sides of all paper gaskets, never had a leak.
Re: Water pumps
Posted: Fri Dec 24, 2021 12:38 am
by 360gts
cmiller wrote: ↑Tue Dec 21, 2021 3:39 am
Not to hijack this thread but the website for E P is not functional. At least here in the States. I remember they used to sell the kit or parts for us do-it-yourselfers. Looking for a current contact address.
Chris Miller
Happy Christmas Chris,
There a re few companies in the US that supply these parts. I bought some from a Massy Ferguson parts supplier. Old Massey tractors used the same water pumps. Sorry I don't have the links now.
Cheers
D
Re: Water pumps
Posted: Sat Dec 25, 2021 3:36 pm
by 65MK1S
Anybody know what the correct clearance of the
impellers should be? The new pump I got from MS
seems to be quite wide at about .024 thou and the
cast iron pump I have is at about .010 clearance or
does it really made a difference other than at low rpm?
Re: Water pumps
Posted: Sun Dec 26, 2021 8:44 pm
by colonel mustard
Thanks Ian,
Just ordered some.
Re: Water pumps
Posted: Sun Dec 01, 2024 10:21 am
by indigo
In the process of fitting a new Minispares EVO pump and want to check the impeller clearance, casting flashings, etc.
Should the impeller clearance be 10 thou as per the original cast iron pumps? It definitely looks more than this.