| Author | Message | ||
| Tom Francis (Tfrancis)
New member Username: Tfrancis Post Number: 34 Registered: 5-2002 |
Well thanks for all the great input. I talked with T. Rutlands and they can send me a rebuilt one for $240. I went ahead and ordered it but I'm not sure what style impeller. Gary I wish I'd seen your message beforehand. I probably would have opted that route. I'll let you guys know how it works. | ||
| Verell Boaen (Verell)
Intermediate Member Username: Verell Post Number: 1029 Registered: 5-2001 |
Gary, Pls post a web link, or at least a phone # & address for East Coast Jaguar. If you're not handy with tools, their price sounds pretty reasonable for a thorough job. BTW, if you over-tighten the belt, you'll overheat the bearings & be back with a weeping water pump in a couple of years. | ||
| Gary van Hartogh (Garyvh)
Junior Member Username: Garyvh Post Number: 59 Registered: 3-2001 |
Tom, I just had my water pump rebuilt by East Coast Jaguar. They are very familiar with Ferrari water pumps and did a superb job. The cost was $219 + shipping. When I got it back it looked brand new. It beats paying $600 for a new one. Hope this helps .... Gary | ||
| Hans E. Hansen (4re_gt4)
Intermediate Member Username: 4re_gt4 Post Number: 1594 Registered: 4-2002 |
Peter: Also, is it known if you can swap the plastic and metal ones on the newest pump style? I asked my mechanic to do it when he replaced my pump, but for some reason he didn't do it. Not sure why. | ||
| '75 308 GT4 (Peter)
Advanced Member Username: Peter Post Number: 2964 Registered: 12-2000 |
Mitch: "Granted, it is NOT the same waterpump from BMW to Ferrari. But, that is imperical enough for me not to trust a plastic impeller." Verell: "I'll still unhesetatingly bet on a brass impeller being around for the next 20 or 30 years tho." And I'll add, that considering there's nothing different with the shape of the impeller that Jeff's holding and the brass one in my old-timer GT4 (yes Verell, I remember seeing a plastic impeller with a funky swirl-shape to it). I'll keep the brass regardless. Now, the real question, why did Ferrari change the material in the first place? | ||
| Mitchell Le (Yelcab1)
Member Username: Yelcab1 Post Number: 609 Registered: 11-2001 |
The E36 BMW series from 94-96 has a plastic impeller that is a guarranty to fail at 50,000 miles causing immediate and expensive overheating of the engine. For this reason, all new water pumps for the 97-99 E36 were changed to metal impeller, as well as the earlier replacement parts. Granted, it is NOT the same waterpump from BMW to Ferrari. But, that is imperical enough for me not to trust a plastic impeller. | ||
| Verell Boaen (Verell)
Intermediate Member Username: Verell Post Number: 1010 Registered: 5-2001 |
re:"With less rotional intertia, your car will accelerate faster with a plastic impeller." Lawrence, Hans, Pardon me, but my town is in desperate need of cash to meet this month's bond committments. I'm authorized to sell the Rte 119 bridge over the Nashua river. Nice money making opportunity, just put up toll gates at each end....(Heheheh) I thought the plastic impeller had a scroll shape that moved water better with less cavitation. Sure looks just like the brass impellers I've seen! Maybe the small holes in the middle of each section add something? Peter, I have to agree with you, I've never heard any empirical evidence that the plastic impellers are unreliable. I'll still unhesetatingly bet on a brass impeller being around for the next 20 or 30 years tho. | ||
| Hans E. Hansen (4re_gt4)
Intermediate Member Username: 4re_gt4 Post Number: 1587 Registered: 4-2002 |
BTW, I recently had my water pump replaced. New plastic one replaced an old "small bearing" pump. I asked my mechanic to switch the impellors, but for some reason the RO was marked "Impellors not switched". I forgot to ask why. Maybe they won't fit?? | ||
| Hans E. Hansen (4re_gt4)
Intermediate Member Username: 4re_gt4 Post Number: 1586 Registered: 4-2002 |
Yeah, I noticed that immediately on mine. | ||
| Lawrence Coppari (Lawrence)
Member Username: Lawrence Post Number: 723 Registered: 4-2002 |
With less rotional intertia, your car will accelerate faster with a plastic impeller. ;=) | ||
| Jeff Howe (Ferrari_uk)
Member Username: Ferrari_uk Post Number: 444 Registered: 12-2002 |
Hi all. Our 328 pumps, #121255 are $419 and are the plastic impellor type. No problems so far... | ||
| '75 308 GT4 (Peter)
Advanced Member Username: Peter Post Number: 2959 Registered: 12-2000 |
Verell: "There are differing opinions as to the plastic impeller's reliability." I doubt the plastic's ability to withstand the conditions of the cooling system too, but, for the number of years that I've been on this board and the F'List and reading dozens of Ferrari maintenance notes in various magazines/books, I've yet to hear of a failure of a plastic impeller. Should we trust Ferrari's choice of material? I know that if I ever had a 328 (or its Italian variant, the GTB Turbo) and I needed to rebuild the pump, I'd have second thoughts about installing a plastic pulley, but maybe that's for naught. Maybe it is the right choice... Hmmm, I hope I'm not starting a flame-war with this one... | ||
| Verell Boaen (Verell)
Intermediate Member Username: Verell Post Number: 1006 Registered: 5-2001 |
Weeping is a sure sign that the seal is beginning to fail & has let coolant into & thru the inner bearing. If the stain is an oily brown, then it's bearing grease & you've got a bearing trying to self-destruct. Search recent water pump posts & the Tech Q&A archives. There's a wealth of info. on both rebuilding & sources for new & rebuilt pumps. If they don't answer all your questions, the post the specific ones to this thread. BTW, There was no 'brass bearing' upgrade. However, the 328s had a plastic impeller that supposedly is more efficient than the older brass impeller. There are differing opinions as to the plastic impeller's reliability. | ||
| Tom Francis (Tfrancis)
New member Username: Tfrancis Post Number: 33 Registered: 5-2002 |
Hey Guys, I'm doing my major maintanence and notice my Water Pump has a weeping stain. I probably need to replace it now. Can anyone suggest where to buy one for a good price? I seem to recall the orginals were later upgrade by Ferrari with a brass bearing. How can I insure I get the right one? Tom |