[200q20v] secondary coolant pump

Phil Rose pjrose at frontiernet.net
Thu Mar 15 13:57:57 EST 2001

At 12:57 PM -0500 3/15/01, Forhan, Thomas wrote:
>Now that the bottom of my engine is so much cleaner and my weeping primary
>water pump has been replaced,  I see  a coolant leak at the secondary water
>pump. Hoses and connections are fine, this is the pump itself. Before I call
>Clair or Carlsen, does anyone now if this a Bosch item I can order OEM? Got
>a Bosch number?
  In my first '91 200q,  that  aux. afterrun pump was replaced by the 
seller when he noticed it "weeping" very shortly before I took 
delivery the car.  He (Art, at Salisbury Motor Car) said that the 
weeping is usually the prelude to catastrophic pump failure, so he 
replaced it as a pre-emptive measure (90K miles). On my present car, 
I've been watching carefully for that symptom, but so far--so good.

There's a Bosch oem part available, but I recall many qlist postings 
from Avi Meron about a much more robust replacement pump that was 
available from Shogun (see below).


>From: "Avi Meron" <avi at cosmoslink.net>
>Subject: RE: Afterrun coolant pump Chevy part?
>Don't loose it again.....
>This is a repost if I missed something let me know..
>* The pump is a 12Volt coolant pump and is designed to act as a water pump
>for a small block Chevy,
>* Electrical draw is under 10AMP and when the coolant is hot the electrical
>draw is only 2 AMP, as a comparison, the draw on the rad. fan (at the lowest
>speed) is between 11-13 AMP
>* The pump is NOT magnetically driven, it is driven by a shaft with a high
>temperature impeller (when you get the pump you get 2 spare impellers)
>* Dia. of the pump is app. 2.5" and length is under 6"
>* The pump section is all SS
>* The flow capacity of the pump is many time over the Audi pump (designed to
>replace the water pump on a small block Chevy)
>* The pump will  fit very nicely in the same location of the old pump
>* I wired it with a relay just to be on the safe side, did not trust the
>"chintzy" OEM wires, the pump has continues 12Volt and the ground is
>activated when the pump is on (OEM set-up), you have to wire it accordingly,
>no big deal
>* the pump runs noticeably less time than the OEM pump, probably because it
>is a REAL pump not a "piss poor" (engineering terminology) excuse for a pump
>* cost for the pump is about $90 and Shogun has them (they are on the net),
>I will dig the phone # for who ever wants it, the company is located in
>Prior lake MN 1 800 527 5665 tech line # is 612 447 6784
>I think I covered everything, did I miss something Frank? If I did let me

Phil Rose
Rochester, NY
mailto:pjrose at frontiernet.net

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