dumb question M52 engine

[DTRguy]

So I am putting together an M52/50 hybrid together and I was wondering (since I can't remember); what kind of water neck or attachment is there on the outlet of the waterpump on the m52 block. My M50 has a aluminum neck. And yes I could swap it all over... but would rather not. The neck on the m50 is smaller in dia. so that won't work either. Just wondering what is there factory. Thanks!

[matt]

It's empty. That's why AA sells a pipe you can pound in there so you can hook up the early spider hose.

[DTRguy]

Excellent! That's what I wanted to know! Now, who is AA? Thanks Matt!

[matt]

active autowerke

[Dave]

And Kevin, don't forget to get the Stewart water pump. Bimmerworld has those.

[BigD]

http://www.aatuning.com/cooling/main.php#cpf

[DTRguy]

And Kevin, don't forget to get the Stewart water pump. Bimmerworld has those.

I pulled the WP out and it is the upgraded metal unit. So I should be good there. Thanks guys for the help and the linky... Much appreciated. Another good resource I need to add to my favorites list right Dave! ;)

[Dave]

I pulled the WP out and it is the upgraded metal unit. So I should be good there. Thanks guys for the help and the linky... Much appreciated. Another good resource I need to add to my favorites list right Dave! ;)

Yeah, well the metal impeller ones have faults as well - I don;t recall the specifics, but BMW actually shit-canned those after a while and went back to plastic. Mike Miller (Tech Talk guy in Roundel - also does the same column for Bimmer) can explain it - I can't.

The Stewart Products one is supposed to be light years better, especially in an engine that will see some serious use.

But you are just putting this in a daily driver for some little old lady, right? :giggle:

[DTRguy]

Yeah, well the metal impeller ones have faults as well - I don;t recall the specifics, but BMW actually shit-canned those after a while and went back to plastic. Mike Miller (Tech Talk guy in Roundel - also does the same column for Bimmer) can explain it - I can't.

The Stewart Products one is supposed to be light years better, especially in an engine that will see some serious use.

But you are just putting this in a daily driver for some little old lady, right? :giggle:

Well, umm yeah.... that's what it's for:twisted:

[matt]

BMW uses composite water pump impellers now.

[DTRguy]

so then is there particularily anything wrong with the metal (welded sheetmetal type? I have apparently two of them.

[matt]

They had bearing issues, I think. BMW switches suppliers for no reason sometimes though. There might be nothing wrong with either of them.

Keep in mind, these cars need waterpumps almost like M20s need timing belts...

[DTRguy]

Interesting... Learning more and more. Never heard about this until today... Yesterday I learned about the Oil pump nut fix issue I have to work on! More to buy more to buy!