head/head gasket

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tommype30cab
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Sat Jun 30, 2007 4:17 pm

hi guys, my car is a 1986 e30 cab pre-facelift loom, it was a 325i but i stuck a 2.7 in it winkeye

it has been loosing alot of water recently, i knew the rad was leaking so i fitted a brand new one, HOWEVER, the problem continued, the coolant light would come on 10-15 miles after topping up! it never got hot though and the temp remained just under half at all times. i had my thoughts that it was head gasket or even head :cry: and yesterday it went on to 5 cylinders and got hot, had to get towed home.

Today i whipped the head off to find the head gasket had blown, much to my relief!

However when i inspected the head i found that the water channels were pretty coroded, ill up load pics in a minute, also the 2 bolts that go in to the head at the front and hold the dizzy on are useless cos the thread is rung off in the head and i cant tap it, therfore i have to hold the timing cover on with a cable tie round the thermostat housing. The head has been re-built 25thousand miles ago though so i am reluctant to swap it for a 100k one i have. what would you do?

Also no6 piston area was covered in oil and the car has been smoking at high revs, i thought it would be piston rings worn but could it be this? pics to follow, thanks for the help
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Tom
"Racing is life. Anything that happens before or after is just waiting" Steve Mcqueen
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tommype30cab
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Sun Jul 01, 2007 10:56 pm

bump, please help :)
"Racing is life. Anything that happens before or after is just waiting" Steve Mcqueen
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Brianmoooore
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Mon Jul 02, 2007 12:07 am

Have the head skimmed and see what the corrosion looks like then. If it still goes under the fire ring, then the head is scrap. I presume it's been running on water rather than antifreeze lately, which can corrode the head at an alarming rate.
Picture isn't clear enough, but it could be a faulty injector making 6 run rich.
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tommype30cab
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Mon Jul 02, 2007 4:51 pm

brian, i hold my hands up! while the car has been loosing so much coolant i have topped it up with water so many times that there is probably no antifreeze in it at all

apologies for the pics, but dad has lost the digital camera so its samsung power only im afraid, a faulty injector is a possibility but it wouldnt cause the headgasket and head around no.6 piston to be caked in oil surely... thanks for the help brian.
"Racing is life. Anything that happens before or after is just waiting" Steve Mcqueen
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