change my water pump

spikey1 · Oct 22, 2015

as started to make a noise water splashing over the engine this is the video of it https://www.youtube.com/watch?v=_KBGR0GjtUc pic of old one took off I used black rubber sealant better then gasket keep old one on as have cut gasket or take oil pump of as altogether fit new gasket coolant cap I pressured all ok I bleed the system now wait see if any air bubbles keep eye on it for a week or so see when pump starting to go see wheel starting to touch middle bolt at the top of the pump some times some fines brake of at the back of the pump as wheel plastic go in to the engine block will melt if u can not see it ones take old pump off or next service mite come out with the oil can not replace bearing that's were Porsche get us as plastic have buy new one.i see there do upgrade water pump now with metal wheel at the back not original Porsche water pump.

Richard_Hamilton · Oct 22, 2015

What you are supposed to do is use a new gasket, and separate it at the cut marks:

spikey1 · Oct 22, 2015

I know that as ive put that in the post but the rubber sealant I find is better as ive used it on loads of cars in the past with no probs just put sealant on new water pump so sealant well go on old gasket fits in place like a glove.

AndyW1973 · Oct 23, 2015

I've read and re-read the original post in this thread but I still don't have the slightest clue what it is supposed to say. My head hurts....

Terry · Oct 23, 2015

AndyW1973 said:
I've read and re-read the original post in this thread but I still don't have the slightest clue what it is supposed to say. My head hurts....

Likewise!!!!

Superjoe · Oct 23, 2015

I know I was pointed in the direction of the forum rules for mentioning bad punctuation and will likely get another "finger waving" now,
but surely some effort must be made as I and many other can't work out what is written.

People would take these posts more seriously and with greater interest if they were understandable.
I've said what needed to be said and will say no more about it !!!

John Sims · Oct 23, 2015

spikey1 said:
... sealant well go on old gasket ....

While I'm no fan of tube based sealants, at the very least you should clean off the old gasket to ensure two, super clean, uncontaminated, flat mating surfaces.

Gaskets are a great deal more than a bit of cardboard filling a gap to stop what ever is inside escaping. They ensure the design spacing of components, correct torque values for fixings, a design interface between two dissimilar materials ensuring appropriate movement for expansion and contraction; the list goes on.

A bit of silicone goo will not do the same job and silicon goo over the remnants of an old gasket is a downright bodge as you aren't getting even contact pressure or alignment.

spikey1 · Oct 23, 2015

You can not clean off the old gasket as its metal & tube based sealant they have come a long way now from home made card board cut out gaskets there say sealant just as good even better Remember still got old metal gasket on there look ok.

John Sims · Oct 24, 2015

Exhaust manifold gaskets are metal, head gaskets are metal, you still remove them, clean the mating surfaces, and use a new gasket during reassembly. As noted before, gaskets are designed to give a very specific space between components. You can't achieve that with goo.

I have to ask, have you taken your water pump off previously?