Water pump

[harborman]

I just did the T-belt and water pump on my car. It was done because of age not mileage. The pump must be original Porsche and it looks like new from what I can tell, no play in shaft. Can it be checked out and used again? I am sure it's fine.

[Mrmerlin]

a good pump will exhibit these
a shaft that has no up/down front to back play.
A weep hole thats not dripping coolant
A shaft friction where if the pulley is spun it quickly slows to a stop from the stiction of the pulley bearing, in otherowrds if you can spin the pulley and it spins for a bit then its worn, OTOH if you spin the pulley and it quickly comes to a stop then it should be good to put into service

[harborman]

Originally Posted by Mrmerlin

a good pump will exhibit these
a shaft that has no up/down front to back play.
A weep hole thats not dripping coolant
A shaft friction where if the pulley is spun it quickly slows to a stop from the stiction of the pulley bearing, in otherowrds if you can spin the pulley and it spins for a bit then its worn, OTOH if you spin the pulley and it quickly comes to a stop then it should be good to put into service

I will try this and see. If good, I will seal in a plastic bag and put in the box the replacement came in. Wonder if I should spray some silicon on the bearing and seal if good? There was no coolant anywhere on the outside of the pump when I removed it. No sign of any leaking at all.

PS. I drove the car about 60 miles yesterday and all seems fine and I think it actually starts faster. I also put more fresh gas in it. I am very happy!!! Next job may be new filter and trans fluid for the automatic. More investigation on this.

[MPDano]

My take on a "used" water pump is "why?" Chuck it in the trash. Your really going to chance your 32V to a used WP and all that work involved? Just me 2 Centavos.

[harborman]

Originally Posted by MPDano

My take on a "used" water pump is "why?" Chuck it in the trash. Your really going to chance your 32V to a used WP and all that work involved? Just me 2 Centavos.

I know what you mean, but it looked so good. I will keep it and maybe have it rebuilt if necessary later. Normally water pumps last quite a long time and this had so low mileage but has age of course. I will check it as Mrmerlin said. Anyway the new Laso is on the car with new Gates belt. Now to install that new hood insulator I have.

[dcrasta]

Wow that car lookks amazing. I have a 86 also. Im going to have to 'Vulcan Mind Meld' with you to get my car back to where it needs to be . [Sad to say unknown history / no documentation or manuals ..]
Im envious! Congrats and happy sharking!

[harborman]

Originally Posted by dcrasta

Wow that car lookks amazing. I have a 86 also. Im going to have to 'Vulcan Mind Meld' with you to get my car back to where it needs to be . [Sad to say unknown history / no documentation or manuals ..]
Im envious! Congrats and happy sharking!

I was fortunate to get this car and for very a good price. Basically I did nothing to the finish and I am the second owner. It was in storage since 1992. I may put some Zanoes Bros. car finisher on it later, used on show cars.

Oh the old water pump looks to be just fine, I could have left it on but did not want to take a chance.

[harborman]

Originally Posted by Mrmerlin

a good pump will exhibit these
a shaft that has no up/down front to back play.
A weep hole thats not dripping coolant
A shaft friction where if the pulley is spun it quickly slows to a stop from the stiction of the pulley bearing, in otherowrds if you can spin the pulley and it spins for a bit then its worn, OTOH if you spin the pulley and it quickly comes to a stop then it should be good to put into service

It spun maybe one turn and stopped, no end play, it appears to be good. Maybe I can sell it to someone not wanting to spend $317, since it will just be sitting here for a long time. It seems with such frequent belt replacement these pumps should last at least 80K miles and not be replaced every 40K, with every belt.

[dcrasta]

So this is the quote I get. I admit being shocked (new to the Game of 928 ownership). Is this a fair price or am I being Ganked?

Also, Im pretty handy with tools, but this car is nothing like the dohc 4 cylinders and rotaries I am used to wrenching on. I really do not enjoy the prospect of getting elbows deep into the car and finding out Im over my head.

Rate level of difficulty. I have rebuilt motors before (4 cylinder) .

Guys , what would be the average expected price for this job and how difficult a job is this to do (say 1 person how long/hours if all parts are on site (I have a garage and compressed air)).

[MPDano]

If you've rebuilt 4 cyliners before, your golden. I would say about a days labor since your gonna want to take your time with it. Do it yourself for about $500

[Mrmerlin]

there is enough guidance here for most people that know how to open a tool box and put ratchets together to R n R a t belt on a 928

[Mrmerlin]

the waterpump that spins for about 1 turn sounds good to go put it back on

[harborman]

Originally Posted by dcrasta

So this is the quote I get. I admit being shocked (new to the Game of 928 ownership). Is this a fair price or am I being Ganked?

Also, Im pretty handy with tools, but this car is nothing like the dohc 4 cylinders and rotaries I am used to wrenching on. I really do not enjoy the prospect of getting elbows deep into the car and finding out Im over my head.

Rate level of difficulty. I have rebuilt motors before (4 cylinder) .

Guys , what would be the average expected price for this job and how difficult a job is this to do (say 1 person how long/hours if all parts are on site (I have a garage and compressed air)).

My local import shop here quoted me $2,200 for the job. I did it myself. It sounds complicated but plenty of good help and down loaded instructions here. If you are at all mechanical and not in a rush and take time, you can do it.

[harborman]

Originally Posted by Mrmerlin

the waterpump that spins for about 1 turn sounds good to go put it back on

Well, the new Laso is on it now and all back together. But I think that original is still quite good! No miles on it. I will save it, Porsche original one or sell it if someone needs one.

[Mrmerlin]

I would get the pump back into service shelf life is what kills em

[morriss]

Yeah, you can do it. I had almost zero experience working on cars until I got the 928. The wp and tb change seemed like a daunting task for me too. With the writ-ups available (just ask if you need one and plenty of people will chime in) and advice here it makes it do-able. In fact, I just got through putting the front of engine back on again for a second time, and it went about twice as fast as compared to the first time. The first go-round I ran into a few roadblocks and had a zillion questions for these guys. They were patient with me and walked me through it. You learn a TON about the 928 in the process too, which gives you the confidence that you can solve other problems you encounter with car on down the line.
Go for it, you'll be glad you did.

[dcrasta]

Thanks guys, I decided to do it myself. The money I save I can pay 6 months rent on the garage I am using.

I have decided on.

Lasso Pump
Porsche Belt
Porkentensioner Kit (with airpump delete).

how does that sound ? figure 12 hours working slowly?

[MPDano]

Originally Posted by dcrasta

Thanks guys, I decided to do it myself. The money I save I can pay 6 months rent on the garage I am using.

I have decided on.

Lasso Pump
Porsche Belt
Porkentensioner Kit (with airpump delete).

how does that sound ? figure 12 hours working slowly?

...and probably less time with your know how and power tools. The thing that may slow you down is possibly breaking WP bolts as they corrode. Best thing is to soak them overnight with something like PB Blaster, etc.

[harborman]

Originally Posted by dcrasta

Thanks guys, I decided to do it myself. The money I save I can pay 6 months rent on the garage I am using.

I have decided on.

Lasso Pump
Porsche Belt
Porkentensioner Kit (with airpump delete).

how does that sound ? figure 12 hours working slowly?

The Gates belt is fine, use it, might be cheaper.
The guys told me to use a NEW Laso pump, not reconditioned.
I used same Porsche tensioner which looked fine.

Water pump bolts came off easy but felt like they would brake when I removed them. Do as MPDano says, soak in PB Blaster over night. When I put them back on I use anti-seize compound on each bolt and went around about 3 times tightening them. The water pump has two alignment pins, so do not try and knock the pump off, go gently and pry on top on each side a little.

I took more than 12 hours but did a little each day and went slow, kept parts all in order. I could do it quite fast now! Experienced mechanic about 10 hours.

[dcrasta]

Thanks Guys. I will be going with the New Laso pump, Gates belt, and Porkentensioner.