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MG MGB GT V8 Factory Originals Technical - Accusump - oil pressure reservoir

A thread on the MGB Technical Section headed Auxiliary Oil Pump

lead to the Accusump being mentioned.

In my post on that thread I made reference to a couple of friends who fitted Accusumps to B V8's and were delighted with them. I keep meaning to fit one to my BGT V8 and this post has got me thinking again.

Both of the friends to whom I referred, sold their V8s in the early days, probably 15 or 20 years or so ago, but I wonder whether anyone has any recent experience with Accusumps which they would like to share? In particular what size they chose if not the largest, how the fitted them etc..

Two links for those who dont know much about Accusumps. The first to Accusump:-

and the second to a site with a good photograph of the three different sizes available, a fitting kit, and the electric and manual valves.

midgets in particular seem to use Accusumps, but I have seen them on TCs,
Porsche 912s etc..

MGA 1600 Roadster

Nigel Steward

Nigel, Sounds like interesting kit. I sometimes get a slight cold-start rattle which I really don't like at all. Have you found a supplier in UK?
How much are they?

The EWP® water circulation pump looks interesting too. Could this be the end of V8 cooling problems?
Ian Johnston

to arc
Demon Tweeks 300 pounds env.
michel WIRTZ


Michel is correct Demon Tweeks.

I too have the "death rattle" on starting from cold if I don't remember to crank the engine for about 20 seconds with no choke - happily it won't start without choke when cold.

When time permits I must acquire and fit.


I don't have too much of a cooling problem, except in heavy vitrually stationery traffic and high ambient tempreatures.

I like the look of the EWP water circulation pump to continue to circulate water after the ignition has been switched off.

What I don't know is whether the flow rate is adequate, compared with the standard pump?

Has anyone used the EWP® water circulation pump - reports please?

Safety Fast

Nigel Steward

I bought an EWP electric pump last year. Frankly, I couldn't find anywhere to fit it and so it still hasn't gone in. However, my cooling problem was sorted with the use of a high volume ally rad (I have a second one for sale as well).
By the way, I found the company to be extremely responsive. I thought needed an extra bend for fitting and they send me one FOC within days. Excellent.

There was a very extended discussion on this BBS on pumps and flow rates and so it will be in the archive.

The most interesting electric pump I found was the Mezier which claims to provide very high flow and also leaves clear room between the block and the rad to fit a much more efficient puller fan.
This may be the way to go.
It is certainly an extremely neat solution. The only thing I don't like about it is that it is not thermostatically controlled so that it is up and running at full tilt from the word go.
I rather thought that the EWP intelligent controller might be the answer. This will vary speed of the pump in line with cooling requirements. However it is intended to work with the EWP waterpump alhthough I expect that it would work with any electrical item as it is probably just some type of rheostat I think.
I should add that I fitted a digital temp guage which is super-responsive and super-accurate. It put an end to trying to work out if I was viewing the temperature needle from quite the same angle as last time etc - y'all know what I mean, don't ya, boys.

The address for Mezier has changed. Try this link and then follow the signs -

This thread was discussed between 20/01/2002 and 22/01/2002

MG MGB GT V8 Factory Originals Technical index

This thread is from the archive. The Live MG MGB GT V8 Factory Originals Technical BBS is active now.