E34 M20 2.5 problems |
Post Reply |
Author | |
Nigel
Moderator Group Joined: 09-November-2002 Status: Offline Points: 6941 |
Post Options
Thanks(0)
Posted: 24-June-2011 at 23:13 |
I've no idea how it was done, apparently is was a "thing of the time", not just BMW.
|
|
Best Wishes
Nigel |
|
Sponsored Links | |
gilescooperuk
Groupie Joined: 29-December-2005 Location: Peterborough Status: Offline Points: 56 |
Post Options
Thanks(0)
|
Well I picked it up tonight - the garage have put some k-chem in the
cooling system which seems to be stopping the loss. They checked it this afternoon and it wasn't losing anything. I will check the car in the morning and if the water level holds up use it tomorrow and see what it is like after that. Hopefully this may have fixed it for the moment - otherwise I was probably looking for a replacement engine..... How on earth did they press the head from a blank, it is far too complex to work, with both sides needing to be different shapes and thicknesses. You might be able to press a rough shape but it will need a lot of machining to get it correct? |
|
Nigel
Moderator Group Joined: 09-November-2002 Status: Offline Points: 6941 |
Post Options
Thanks(0)
|
Hello Giles I've had two M20 engined E34 525i's, and I'm afraid, with age, the heads were a bit of an issue. It was to do with the way they were made, pressed from balls of hot alloy, rather than pure molten metal, so I was told. They had a reputation for becoming porus. I had one fail on my first car, although that cracked. One "test" I suggest you do, is with the car cold, squeeze the top hose with your fingers, then start the engine and do it again, if it's gone "rock hard", I'm afraid it is likely to be the head. Good luck |
|
Best Wishes
Nigel |
|
gilescooperuk
Groupie Joined: 29-December-2005 Location: Peterborough Status: Offline Points: 56 |
Post Options
Thanks(0)
|
Just had my car in the garage as it was losing water from what
seemed to be the water pump but I couldn't locate the source. The garage has rung me back their was a problem with the pump gasket but it won't hold pressure. They have done an exhaust gas test and it is either the head gasket or a crack somewhere. Now the head will be a pig to remove as the exhaust manifold is stuck on with some sealant (a bodge job by a garage who I got to change the manifold gaskets and broke some of the studs...). So what would you advise? Thanks Giles |
|
Post Reply | |
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |