Electric Water Pump

[John Wright]

Ihave a '74 Stag in good condition, but when driven hard on a hot day, I have to keep an eye on the temperature gauge. It has never actually boiled, but it gets closer to the red than would like. Reading all the subjects about Stags, overheating features as one of the most discussed. I have therefore been thinking about a permanent cure for this Stag weakness. It would be worth a few bob to have peace of mind.

Consequnetly, I have been thinking about an electric water pump (Davies Craig?), but I don't know anyone who has one. Do you have one, have any thoughts about fitting one, have investigated, or know of somoene with one? Looking at locations for the pump, it would appear that it could go where the alternator currently sits, and the alternator could move to the top nearside. This would keep the pump low down. Does anyone know anyone selling aconversion to move the alternaor, or does anyone have sketches/drawings of suitable bracketery?

John.

[marty64]

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hi john, ive just been looking at the stag booklet for august, and onb page 30 thay aretalking about the electric water pump.

marty

[John Wright]

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Thanks for the info on the letter; I have now read it. I might write to Davies Craig in Australia and see if there are a lot of installations over there. Maybe there's an Aussie company who make the necessary plumbing parts and alternator brackets. will post anythng I find to make it available for others.

John

[John Wright]

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I have now been in touch with Maw Solutions and they pointed me to an article in the SOC magazine March 2005. Dave Chapman fitted the Davies Craig EWP to his Stag. I will try and find out his experiences over the last 2 years.

John

[seaside bill]

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John Wright wrote:

I have therefore been thinking about a permanent cure for this Stag weakness. It would be worth a few bob to have peace of mind.

Consequnetly, I have been thinking about an electric water pump (Davies Craig?),

John

Before you get your spanners out and spend some cash, I'm not sure your basic premise about a 'permanent solution' is right. While the Stag water pump may not be a marvel of modern robust engineering, when it's workinga 12 vanedoes the job adequately and I'm notconvinced an electric pump would improvethe functionof circulating coolant. Recent comments in the 'heat' stand are approprite here- if the system is maintained in good shape and supplemented with an electric fan,it will just about cope withmost conditions. Keeping a watchful eye on the temperture gauge is part of the Stag driving experience :?

[d184479x]

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Hi John

In the August issue of Classics monthly, page 54, there is a new product review of an Universal electric water pump, dont know if this is of any use. They are supplied by Burton power (0208 554 2281)(burtonpower.com) and cost from £159.95.

Regards Andy S

A blue Stag is a good Stag.

[John Wright]

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Thanks for the info, I will try and find a copy of the review. I have looked and the Burton Power web site and the electric water pump they are selling is ther Davies Craig.

I have had a reply from Davies Craig recommending their 80 l/min pump using a simple thermostatic switch to turn it on when the temperature reaches a more than 4 degrees C above the theromstat opening temperature. The pump will run until it reduces the temperature to 4 degrees C below the set point. They have pointed me to their technical info at http://www.daviescraig.com.au/main/display.asp?pid=45.

John

[DJT]

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John,

Looks like a tempting option, especially as I have experienced WP failure recently. Click on the 'SAAB Owners' link under EWP Review and they have a novel way of dealing with the old pump cavity. Sadly it is somehow comforting to know that the 'Oh so reliable Swedes' have similar problems - unfortunately inherited from the same designers .

Dave

[John Wright]

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The Saab information is very useful. There is a downloadable PDF, but the link is wrong on the site. The correct link is http://www.geocities.com/saab99ewp/saab99ewp.pdf

John

[TimShoubridge]

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I looked into this subject earlier this year and found a supplier in the UK that had been involved in a small number of Stag conversion (2 or 3) using the Davies Craig pump. I have some mails and information from him at home (am away at present so cannot get to it), but when I return home I will dig it out and post it for anyones interest.

There was also a lot of discussion over on TriumphStag.net on this subject as a few Australian owners have performed the conversion so it may be worth having a trawl through there if you have signed up.

I seem to remember debate over position (lower or upper) and movement of the alternator. Whether it was best to remove the existing pump or just supplement it etc. so well worth a look if anyone is serious.

Tim

[TimShoubridge]

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Found a link to the company I ran across.

http://www.mawsolutions.co.uk/index.html



They seem OK and offer advice. worth a call.

[John Wright]

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Thanks, I actually called MAW Solutions and they are indeed very helpful. If I decide to buy, I will probably use them. I believe they give a discount to SOC members.

John

[John Wright]

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Thanks, I actually called MAW Solutions and they are indeed very helpful. If I decide to buy, I will probably use them. I believe they give a discount to SOC members.

John

[TimShoubridge]

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John Wright wrote:

Thanks, I actually called MAW Solutions and they are indeed very helpful. If I decide to buy, I will probably use them. I believe they give a discount to SOC members.

John

Glad to be of help. I didn't ask about SOC discount when i called them........Just so used to not getting any with anyone else. :shock:

[mjheathcote]

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I would only ever fit the electric water pump to my car as a secondary pump to the original, mostly to be used when the engine has just completed a high speed run and has come to stop, say to fill up with petrol.

If you are hopeing to solve other cooling issues you have problems elsewhere IMHO.

Apart from my turret header tank, my system is stock. Viscous fan only, original pattern 4 row radiator, 13psi cap (no point in the higher cap pressure IMHO) and 12 vane pump (6 or 12, makes no difference I found)

For example running down & back home from this years national day I was cruisingbetween 4000-4500 rpm for over 2 hours solid.With a standard diff & 3 speed auto you can work out the approximate speed! My temperature was a consistant 90 degreeC on my mechanical gauge. Only when I stopped for petrol did the temperature rise to 100 degreeC, but dropped down almost instantly when going again (the only reason why I would fit an electric pump to prevent heat soak)Meeting standing traffic at roundabouts etc. makes very little difference. Once back onto A roads my temperature drops to 85 degreeC.

If you are still using the original electrical gauge dump it! A mechanical gauge tells the real story, you may find that you have no problem at all!

Cheers,

Mike.