Welcome to our Site for MG, Triumph and Austin-Healey Car Information.
MG MGB Technical - Replace the water pump?
|I am rebuilding the engine in my 67 BGT. Normally I would replace the water pump, but after inspection, it looks nearly new. Here is a picture of what it looked like right out of the motor.|
No play that I can feel or measure in the shaft. Car had 73,000 miles when I got it in 2005. Now has just over 100,000.
Car has never overheated and even coming across the US in August, it stayed well within normal temperature ranges.
Not a ton of money to replace, but also not a hard item to change out (unless you are on the road away from home of course)
|Replace it only for the fact that you have a "defective" water pump no matter what its condition.|
By "defective" I mean that it is the cheaper model of water pumps.
Yours has a cheap stamped metal impeller. The good ones have a cast iron impeller.
Change it now and sleep better.
|Given the described and visible condition and experiences with it I'd probably reuse it. I fitted a replacement to my roadster because the original was noisy and sloppy. I thought that was bad enough as it was an alloy casting even though it had a cast impeller, and started weeping on warm-up not long after. So I bought a pukka iron/steel one and carried it around in the boot ... for probably 20 years. I only fitted it a few months ago as I suspected the alloy one might have been sucking in air, but that turned out to be a head gasket. So the alloy pump has gone on the shelf as an emergency spare.|
So that would indicate that this is not the original water pump?
|Almost certainly 100% not original.|
|Thanks Paul. On this car, I have been surprised how few non-original parts I have found. Of note, the pump body is aluminum and not cast steel.|
|Bruce, Moss has reproduced a high quality cast iron pump with a cast iron impeller and ceramic seals. It's an excellent unit and I would highly recommend that you replace the one that you presently have with one of theirs. RAY|
This thread was discussed between 05/10/2014 and 07/10/2014
MG MGB Technical index
This thread is from the archives. Join the live MG MGB Technical BBS now