RE: [DML] Water Pump

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

Martin,
We had this same conversation a year or so ago when Houston was saying that
if wasn't their pump or a Renault pump, then it wasn't any good and was
classed Aftermarket. First let me say PRV6 Not PRVD6. The pumps I use are OE
in every way and I proved it on the web site by comparing the construction
of the pump and the size of the impeller for water flow on the back of the
pump with what we can get over here which come from one of the European
countries. We have no pump manufactures over here. They are the same pump.
Also, Since I'm a parts man, I have looked at a lot of pumps that came in
different pretty boxes and I can almost tell you who made the part inside.
As best I can tell there were or are 3 water pump manufactures that made
pumps for The PRV6 and the Delorean one of them as stopped because the molds
wore out. I talked to them thru the US rep and they aren't going to re tool.
Also, the importers over here keep going up and blaming it on the EURO so I
am now importing my pumps direct from the manufacture again ( over there ).
I will say this, Me and another large DeLorean vendor were and are getting
our new pumps from the same source, so if something was going to be wrong
then it would have happened long before I showed up. I have only sold about
300 + pumps in the 4 + years I have been selling parts and have not had one
pump that I can recall that has come back for improper operation. That's why
I can give a 5 year warranty. They just don't give problems and if it did I
will just give you another new pump.
 As far as gaskets, Gaskets are thin in a lot of cases and go on that way
and then swell as water begins to soak in. The are several grades of
gaskets, but most of those problems don't show up for years. I just took an
original pump off a car that was leaking on the back plate. It had been on
20+ years.
As far as the pulley, Most people try to take the pulley off and wind up
destroying it because like me not thinking it doesn't matter. The pump has
to come apart to be rebuilt and the re-builder may give you trouble if you
give them the pump in pieces.
Again, Most of the small remanufactures over here have been forced out of
business by either big business or insurance. They just flat can't afford
the insurance so they close down. The DFW area being 3+ million people used
to be full of every type of rebuilder there is, but now most are gone.
Cardone, is as far as I know the largest rebuilder in the US and they are as
I understand self insured and I haven't been impressed with the production
line quality they put out. That's why It's nice to find someone over here
that still cares about quality.
Hope this answers a lot of questions.
My hands are tired from hunt and pecking.
John Hervey
www.specialtauto.com
We look and try to do it better.





-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx]On Behalf
Of Martin Gutkowski
Sent: Sunday, June 05, 2005 5:17 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: Re: [DML] Water Pump


John

I am curious what you have to say to those who think the aftermarket
pumps are not as good as OEM ones?

I'm not trying to start an argument, and I'm sure there'll be planty of
happy customers with your pumps, but I know a lot of this comes down to
driving style. Over here we can get away with long journeys at high
speed (80+mph) and its on runs like this that the pumps work hardest. I
am genuinely curious to hear your reaction, and any other experiences
owners may have.

I know for a fact that one of the major vendors stateside started and
stopped using those pumps several years ago because they proved to be
less efficient. We have had a similar experience with aftermarket Volvo
(4-bolt) pumps. I have chosen to write this e-mail because one of these
cars came into our shop last week. It continually loses coolant slowly
but has no leaks and the head gaskets are absolutely fine. I've seen
this a couple of times. I've also seen a couple of cars with aftermarket
pumps installed where the back plate works itself loose due to the
replacement gasket shrinking. I have bought one of your pumps in the
past and seen that they are identical.

FWIW, original pumps are still available brand new and they include the
back plate already mounted. We've sold countless new Renault pumps and
had absolutely no trouble with them. I've damaged a couple of pulleys
getting them off old pumps but the only one that couldn't be repaired
was stretched too far and took over 12 tonned to press it off! On that
occasion, we sourced a new pulley from you. I'm not trying to bash your
business, I just want to see what I can learn. I am certainly not trying
to sell pumps - the exchange rate sees to that!

I am also slightly surprised by your comment:

"He also told me the trick to get the old pulley off without damaging it
so that has been a big help."

There's no trick - just don't try pulling them off, instead the shaft
must be pressed out. Have you been going this long without realising that?

I am sure your rebuilt pumps are built to a high standard and will work
as good as new. In my experience, this will be better than the
aftermarket units.

Martin
DMUK
http://www.delorean.co.uk/DMUK/newparts1.html#pump


John Hervey wrote:

>Group,
>I have found a water pump rebuilder that does exotic cars and has
>agreed to rebuild the De Lorean pumps for me. We got all the parts
>and now have about 15 in the works and we are also cleaning up and re-
>plating the original pulleys.
>Don't throw your old pumps away, I'll take and recycle them.
>He also told me the trick to get the old pulley off without damaging
>it so that has been a big help.
>As you know we also have the new 4 Bolt pulley water pump and pulley
>in stock along with new pumps.




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