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Location: Annapolis Maryland
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Porsche Crest Waterpump: New or Remanufactured?

I've read some threads that say you should never use a remanufactured waterpump and that some mechanics won't touch them.

Have any of you had any first hand experience with a remanufactured waterpump going bad? I'm considering one from either Pelican or Vertex.
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Old 03-08-2006, 08:54 AM
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Not personally, but given the potential consequences of one going bad (siezed pump, snapped t-belt, bent valves, trashed head, damaged pistons, etc.) I think using a new one is a lot smarter. They're not all that much more expensive and usually come with a warranty.

BTW who cares if a mechanic won't touch 'em. No offense, but if you can't do a waterpump job yourself you probably have no business owning a 944 unless you enjoy lighting money on fire for yuks.
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Old 03-08-2006, 09:46 AM
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Just as already mentioned, if they go bad on these cars, then really bad things can happen. I always go new on my Porsche and actually on almost all my things now. Rebuilt just doesn't last as long and I don't like paying for repairs twice or even worse being stranded on the road somewhere. I think rebuilt is for the budget minded. Those who can afford to fix it right the first time should always use the best quality parts. Take care of it and it will take care of you.
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Old 03-08-2006, 10:37 AM
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Is New Actually Better?

I called representatives for both Pelican Parts and Vertex and they said their rebuilt waterpumps are just as good as the new ones. I want good quality, but don't want to pay extra for no added value just to say "its new". If someone has some experience or expertise, not just a feeling, to demonstrate that new is better than rebuilt, I'd really like to hear it. In some cases, rebuilt is sometimes better - A-Arms, Motors, etc.
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Old 03-08-2006, 11:53 AM
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I've used a rebuilt one, no problems so far.
I'm not one of those people who wants everything new, I'm on a budget, and my time is free

I've seen a few rebuilt water pumps fail. Usually they leak around the shaft. I've never seen one sieze up though.
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Old 03-08-2006, 12:10 PM
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My rebuilt has been fine. Wayne? AFjuvat? Brit? Any thoughts on lifespan for a new vs rebuilt?
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Old 03-08-2006, 01:09 PM
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What can possibly be wrong with a remanufactured water pump? The only wear parts are bearings and seals and they are replaced with NEW parts when rebuilt. Also, remanufactured pumps go through a LOT more quality checks than new ones to insure correct tolerances due to the fact that they are rebuilt. I know, I sell a LOT of them.
The only pumps that I've ever refunded were for certain cutomers* whose only complaint was that the water pump is defective because their car still overheats!?!?!? We unfortunately have too liberal of a return policy IMO.



*some people that shouldn't own tools, cars or be allowed to reproduce
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Old 03-08-2006, 04:50 PM
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IMO ....It is true that there isn't much to go wrong but the problem with rebuilt is this. I have had rebuilts that last a really long time and I've had them that fail pretty quick. There is actually one other piece that makes a difference on a water pump and that is the shaft. If the shaft has worn places or rust pits, what will that do to the new seal. If it is has any pits in it...then It will grind on it until the seal starts to leak. If it just has a groove worn, it will tend to leak easier just like any other sealed shaft in a car. The other unknown about rebuilt is how good is the quality of the seals and bearings that were put in. Without a name brand to "sort of" rely on you just don't know. Are there differences in quality of seals and bearings? Sure there is....is the ones used to rebuild the parts top of the line...who knows? Usually it works out okay but sometimes it doesn't and when it doesn't maybe it's just a water leak which isn't that bad ....maybe the bearing fails. It's a gamble...sometimes you win, sometimes you lose. If I buy a known quality name brand part that is new, I know I don't have rust pits in the shaft because someone ran without antifreeze and I have at least a small assurance that the parts in the pump are of some known quality. In my opinion, that's what is missing from rebuilt. With that said...there have been times in my life where my budget was tight and I went with rebuilt and it usually went okay. I have also put on other rebuilt parts that didn't work out like brake calipers or starters. For me, it really depends on the price difference and my budget and how long I expect the part to last. My dad ran a garage through my entire teenage age years and early twenties and most of the time those worked out okay as well, but there have been instances where people had to bring them back.
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Last edited by Razorback1980; 03-08-2006 at 07:20 PM..
Old 03-08-2006, 07:08 PM
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Use rebuilt pumps and have yet to see a failure. Use new pumps on 968 because rebuilt ones aren't always available. All the 928 models get rebuilt. As long as everything is replaced there is no problem. Using parts past their expected life causes problems.
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Old 03-08-2006, 07:38 PM
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I haven't done but a couple W/P changes on these cars. The first one was a rebuilt one, and I had to send it back because it had an earlier (narrower) pulley installed on it improperly, so it didn't align properly and my timing belt would ride off of it. I believe most rebuilds will have the newer style (wider) pulleys installed on them, and this should not normally be an issue. The other thing to keep in mind, is when using a rebuilt pump, depending on what vintage core was used, it may or maynot have the thermostat retaining ring in the same place as your old one, thus you may use the O-ring seal, instead of the smaller, (around the thermostat) seal with the metal spacer. The location of the retaining ring slot inside the waterpumps were changed at some point.
Otherwise, I doubt it really is a big deal. I'm gonna help install a rebuilt pump on '90 S2 this weekend. It has the earlier positioned ring slot in it also.
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Old 03-09-2006, 05:32 AM
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I hear that new vs. rebuilt WP depends on who did the rebuild, what kind of day the rebuilder was having, good/bad rebuild parts batch, etc. I figured the extra money was worth the feeling that I may not have to pull the front of my engine off again for quite a while. Just me though. Anal Porsche owner. Pulling the water pump is not party time.

Harvey
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Old 03-10-2006, 05:51 AM
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Old 03-10-2006, 05:51 AM
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