Vibration

[hi8ha]

OEM water pump ordered today.

[hi8ha]

Got the pump with the composite impeller. Followed the instructions in the DIY post however, is not as easy as it seems. In my case will have to take out the thermostat (bought the metal gasket) also there is a hose that, will have to loose, the hose from the expansion tank that connects with a metal tube that is attached to motor case, and also the hose that connects from the thermostat to a tube on the left side of the engine compartment that goes all the way to the front (?) needed to be detached from the thermostat. It was sooooohard to disconnect that had to cut it (also bought the original Porsche hose), Is a pain to unscrew one of the thermostat screws. Got the Porsche coolant. Was working on the car Sunday but it has been such a hassle that had to stop. My shoulders were sore. Will try to continue next Sunday. I'm in no rush so will take my time. Envy those who did the job in 3 to 4 hours. Great cars but... **** German engineering. They design things like never are going to break. My wife's Mercedes is the same. So are the Leica cameras.

Edited March 19, 2013 by hi8ha

[Ahsai]

Ah, you must have missed the secret weapon on hoses....http://www.harborfreight.com/8-inch-radiator-hose-pick-96572.html

pointed out by JFP before.

[hi8ha]

Thanks. There is a harborfreight aboy 25 min from the house. Will get one.

[Ahsai]

Easy with that sharp tip though. Don't want to poke a hole on the hose :)

[hi8ha]

How do I use a torque wrench for the water pump? There is hardly room for a regular wrench.

[JFP in PA]

Support the engine, detach rear stabilizer bar, remove the retaining straps on the cats, remove the engine carrier bolts, swing the engine carrier rearward, have at the pump. Sometimes helps if the engine is lowered slightly.

[hi8ha]

Thanks. will try.

[JFP in PA]

This is fully covered, with photos, in the Bentley manual if you have access to one........

[hi8ha]

Unfortunately no. Just installed it and did a search for the torque specs. The old pump was warbling aprox 1/8 of an inch. No wonder there was a vibration.It has taken this long since I have to have my right shoulder replaced, I'm right handed, and needed to rest it. Good thing I'm in no rush. The exhaust bracket was broken. All the remaing parts to be installed will be picked up at Vertex here in Miami. New expansion tank cap (ending in 04), the hose that had to be cut, coolant (3 gals)< getting stainless steel hose clamps. In the process of getting an Uview Airlift. Does it has to be the fanciest one or just the basic will work?

[JFP in PA]

The Uview "basic" will do OK, but with the top of the line unit being so much better made (all brass instead of molded plastics), coming with adaptors to fit just about anything with a cooling system, and only costing a few more bucks, I'd go for the better unit. We have had a couple of the brass units for years, great product.

[hi8ha]

Thanks.

[hi8ha]

Do you have to empty all the coolant from the system or the Airlift does that as well? Just asking before searching for the coolant replacement.

[logray]

If you are just doing the repair outlined in your posts, you don't need to drain all the coolant out. And as a side note it's pretty much impossible to get all 6+ gallons out unless you completely take the whole car apart.

The airlift is only used for filling.

Just drain what is in the block and various hoses and then refill according to the uview directions and you'll be fine.

There are many write ups on how to use the uview here and also on rennlist. Example:

http://www.renntech.org/forums/tutorials/article/301-996-complete-coolant-flush-diy/

Edited March 24, 2013 by logray

[JFP in PA]

Logray is correct, but while you do not need to drain the entire system, if the mix in the car is more than a couple years old, I would dump it all and refresh the system. While called "lifetime" coolant, the OEM coolant (which is very good) does eventually break down and need replacing.

[hi8ha]

That's why I wanted to replace the coolant. Is at least 5 yrs old :wacko:

Rather have more coolant available that needing to order some at the last moment. Thanks for your responses and the link.

[hi8ha]

Remember seeing in one of the posts that it was not recommended to flush the coolant with air due to a possible burst of one of the hoses.I do have a wetvac, can a wetvac be used suck out the coolant?

Another question, once the coolant is mixed (50/50 distilled water) what is the shelf life? Does it goes bad or looses its properties? Panning to have the remaining unused coolant stored.

[JFP in PA]

Low air pressure (less than 20 PSIG) would not cause an issue, but when you tell people that, immediately the "If one is good, and two is better; then forty seven has to be just right" principal takes over and the next thing you know someone is cranking up their compressor to put 100 PSIG in the system with disastrous results. These systems where designed to operate at around 18-19 PSIG, no more.

Realistically, you are never going to get more than about 85-90% of the coolant out of the car without taking the entire car apart; some of it just gets hung up in odd places and cannot be pushed or sucked out. So to prevent problems, just let gravity do the job for you; it is about as good as it gets.

Premixed (with distilled water) coolant will live a long time if stored in a closed and clean container. If you think about it, stored on the shelf, it is actually better off than the stuff in your engine (no heat cycles, no metal ions, no contamination, etc.).

[hi8ha]

Thanks once again.

[hi8ha]

Done deal.

Thanks to all for the assistance and recommendations.