The V6 has had a small water leak over the last few weeks which i put down to a leaky rad. I'd run the motor up for an hour in the workshop with some cardboard underneath but nothing showed up on it but its been in the back od my mind that this wasn't the cause ofthe leak.
Footwells are both dry so its not the matrix, HBV has been done and can't feel or see any leaks at the back of the engine.
OK, head gasket. Got the motor hot, no steam etc from exhaust, no oil in coolant or coolant in oil, took it for a run down the A11 and it pulls like a train and no missfire.
Anyway that was last week and as i'm upto my eyes in a Manta rebuild for another customer i've put off doing the rad so last night the other half tells me the low level coolant message is on again.
I had some coolant already mixed up in the boot so i put two+ Ltrs in a cold engine and the coolant is P***ing out.
Ran the car back upto the workshop and on the ram and there is coolant dripping down the very back of the block on the passangers side. Took the inlet manifold off to see if i could get a better view and also check the hoses etc.
Found nothing, all the hoses clean and dry and no matter how hard i pushed my hand down the back of the motor i couldn't feel anything wet.
So the conclusion is the the N/S head gasket has gone on the bottom back corner. Its taking the contents of the expansion bottle without any pressure in the system and then stops so i would say that the coolant level is getting down to the height of the block .
So unless anyone has a better idea then its engine out at the weekend.
I've a spare engine in the workshop that was earmarked for the Manta but thats on the back burner, got a '70 Opel GT to build first so i think the quickets and cheapest thing to do is stick a new belt kit on the spare motor check it out and swap them over in a weekend.
There was a post the other week and some had put up a picture of a headgasket with the oil and water ways maked out, had a look but can't find it anywhere, does anyone have a copy
wish me luck
Andy