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omega2

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Here's one for you engineers/techies. Four years back we cooked our Port engine, but managed to recover it as it did not freeze, however we then had oil getting into the water jacket and clogging up the header tank stack, this was no big deal as we have spares for nearly everything on these 35 year old Sabre 180's, so from time to time we removed the stack and put a clean one in. Every avenue was explored to determine the cause but we got nowhere until we were advised that maybe the block itself was cracked in an area were the oil gallery is close to the water jacket. Steel seal was administered and the problem went away for a while i.e we stayed cool and not much oil was being lost, so we carried on, the boat is used purely for fishing and distances no greater than 10/15 miles are traveled. In any case we got two! Recently we now find that water is getting into the sump i.e the oil level is rising, at first we thought of selling it to the Arabs as a new way of oil production. People have been suggesting that the head gasket has gone but I am not convinced, I pressure tested the water jacket via the header tank filler to 15 lbs per sq inch and it held for over 20 minutes, with the engine cold, then released the pressure and tested with the engine warming up and as the thermostat opened at about 55 degrees the tester gauge rose to about 17 lbs and remained stable, there is quite a lot of steam and "blowing" coming out of the rocker box, and our bottle and tube from the breather is gathering a lot more water than ever. There are traces of water in the rocker box but no mayo yet nor on the dip stick, the engine starts and runs fine, no hydraulicing Lots of smoke on start up to be expected with these old Fords, slight white smoke when under load, But we are sure that one of these days one or all of the pistons will come flying out of the engine box. When if ever this weather warms up I am afraid that the port engine will get pulled out and replaced, got another one in the garage.
 
So what is the question?
If you had a crack which you "repaired" it's pretty obvious that it had opened up or got worse isn't it?
Your solution appears to be sitting in your garage.
Good luck!
 
Not entirely sure it is/was a crack and others on here may be able to shed a light on it. I wanted opinions regarding the cylinder head theory, and if possible the oil gallery/water jacket close proximity. But if the post offends then I am sorry.
 
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Have you tried running with the pressure cap off, see bubbles if head casket or cracked block ? sounds like my Volvo 940 estate with head problem, in that case it was change the oil and get it in the auction fast, yours sounds like the garage.

Brian
 
Always difficult to diagnose but....... have the oil cooler checked, it is possible that your getting a little water into the oil and then it's evaporating off when the engine is warm hence the steam from the rocker box.

Late starter is the man for this one.

Tom.
 
If you had oil leaking from the pressure side into cooling system the level would drop eventually running out of oil, not the case.

Where was this crack in the block ?

The old fords do breathe even when they are good on the pistons and rings so don't worry about that unless its a pulsed emission of smoke from the oil cap then I'd say you have and issue.

Do you know if your engines have chrome liners or cast liners in the bore?

If chrome they can move , the seal on the head gasket can fail allowing water in the sump.

A friend had a later Volvo tamd 74 which emitted steam from the breather filter He thought it was a major problem but it turned out the exhaust manifold had cracked prior to him buying the boat ,a new one had been fitted but the dealer didn't change the oil, coolant had fallen into the sump through the exhaust ports past the rings .
He drained the sump to find a large amount of water in the bottom .
It was thus that turned into steam when the oil temp rose above 100 deg c boiling it.

Maybe this is your problem .
 
You can get a kit that checks for Co2 in the header tank, that will tell you what's wrong.
Could be head gasket and poss worth trying as they do age.
 
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