Best water pump? - Page 3

TornadoRed · October 23rd, 2009, 19:32

Quote:

Originally Posted by brnsgrbr

Ah man. That is the last thing I want to hear before I install my Laso tomorrow along with the TB upgrade kit I just bought from Diesel Geek.

If there was a bad batch of Laso pumps in 2006, what makes you think they were still making flawed ones in 2009?

JettaDrvr · October 26th, 2009, 17:13

Laso Brass. Definitely no Graf as I have seen too many failures on other VWs.

jollyGreenGiant · December 14th, 2009, 07:18

Just found a bad Laso pump on a 2002 ALH that I installed a full TB kit on 60K miles ago... 80K to 140K.

It was the shaft bearing... Totally shot, the impeller was machining itself against the block internally and was supporting the shaft, probably saved the TB from jumping time. It wasn't all that loud interestingly, I noticed it right away but I could imagine someone missing it... On a positive note, it was still maintaining an OK seal considering how much play the shaft had.

TornadoRed · December 14th, 2009, 09:23

Quote:

Originally Posted by jollyGreenGiant

Just found a bad Laso pump on a 2002 ALH that I installed a full TB kit on 60K miles ago... 80K to 140K.

What was the approximate date when you installed that Laso pump? Earlier in this thread there was talk of a bad batch.

jollyGreenGiant · December 14th, 2009, 09:54

Yeah, it was back in late 2006 or early 2007, I'd have to look up the record and I'm on the wrong computer to do so right now.

oldpoopie · January 1st, 2010, 15:07

Just replaced a spun hepu after 50k of use on an alh jetta.

Sip'n Diesel · January 1st, 2010, 15:42

I've got ~73,000 miles on a Laso installed mid '08... no issues AFAIK

subscribed to this thread - will try to remember to post here after checking the WP for abnormalities during TB maintenance sometime in the next 4-6 months

jasonTDI · January 1st, 2010, 17:17

All I'm installing now are Graf units.

turbocharged798 · January 2nd, 2010, 05:33

Got approx. 50,000 miles on the pump that was included in the tdiparts kit and it has been holding up great.(I think it's a Graf?)

Just checked on the timing belt yesterday and it looked like new.

greenskeeper · January 2nd, 2010, 06:44

Still on the original water pump with 140k miles.

Franko6 · January 3rd, 2010, 08:10

I've got a lot of Grafs out there and two leakers. But both were also very long in the tooth. I've seen the Saleri and what it is NOT is PLASTIC... it's an epoxy resin. The claim is that they are used on some of the exotic Italian vehicles, which have very high rpms and are quick revving. Both would be indicative of fatigue for the pump impeller and the bearing, but I don't have any history for life expectancy for anything except what I've personally used. None of the companies give failure or life expectancy reports.

I do know that all the castings between the plastic, resin, and the brass impellers are very fine. However, I don't have any worries that there is a tremendous advantage having a very smooth impeller. I don't thinkVW has undersized the w.p., as there aren't many issues even in very hot climates with any choice of w.p.

As someone said, I abhor the Meyle stuff, most particularly any o their products with a sealed bearing.

I only know that all w.p.'s have a failure rate. They are supposed to not fail for 100k. I have not had a Hepu seal fail, but others have. I might also note, despite the number of failures of the OEM plastic impeller, they go in every single vehicle and we really only see comparatively few fail. Those get loudly advertised. I've taken out a lot of perfectly good ones and also my share of leakers that were OEM... Only a few OEM broken impellers.

Beside avoiding the obvious bad choice, Meyle, keeping your eye on the water level and checking for possible leaks is the thing to do. Use what you are comfortable with. I can't guarantee that any company always makes a perfect one.

PDJetta · January 3rd, 2010, 09:48

The original (plastic/resin impeller) water pump I removed from my '04, at 100,000 miles, during my timing belt service looked fine in every way. No leaks, smooth operation and nice and tight. No cracked or loose impeller either. It was subjected to alot of stop and go rush hour driving too.

--Nate

tditom · January 5th, 2010, 08:05

i just received a Graf wp with the cast metal impeller and the impeller vanes surfaces are very rough. I could imagine serious cavitation with this. i will try to post a pic.

I guess i'm not worried about the cavitation eating all the way thru the impellers, but the thought of the little metal bits floating around in my cooling system makes me a bit uncomfortable

any advice?

jasonTDI · January 5th, 2010, 08:44

Yeah, don't worry about it. Its a non issue. I've looked at many removed and no wear was evident.

bbarbulo · January 5th, 2010, 10:57

a Graf metal impeller just took a dump through the oring (70K kms), now replaced with a Hepu metal.