Winnies 747 TD42 GQ

[nissannewby]

Hmm. Could have been a possible gasket/head issue and has ingested some water causing a hydraulic situation.

[PeeBee]

Hmm. Could have been a possible gasket/head issue and has ingested some water causing a hydraulic situation.

Matt, how much water would you need at say 2000rpm to give a hydraulic lock up? This would be more than a weeping leak wouldn't it?

[nissannewby]

Not much. Probably not even a tablespoon. What can happen is you can have a blown gasket or cracked head, while running this may not be a problem. Its when the vehicle is stopped and it can leak some coolant into the bore. Then when you start it next time it can bend the rod. There are many other variables and consideratios to take into account. But not returning coolant and having a pressurised system (coolant being pushed out of expansion tank.) Can be a sign of conbustion pressure entering the cooling system.

[Rossco]

Fark winnie, shattered mate that really sux, not what you really need at all. On the plus side pretty cool shed she's sitting in lol. Yell out if need a hand more than happy to swing a spanner or two, getting pretty down pat pulling these things in & out lol . .

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[PeeBee]

Not much. Probably not even a tablespoon. What can happen is you can have a blown gasket or cracked head, while running this may not be a problem. Its when the vehicle is stopped and it can leak some coolant into the bore. Then when you start it next time it can bend the rod. There are many other variables and consideratios to take into account. But not returning coolant and having a pressurised system (coolant being pushed out of expansion tank.) Can be a sign of conbustion pressure entering the cooling system.

Would you feel any vibration from a bent rod - assuming it can still cycle about the rotation? If its bent its going to sit in a different part of the cylinder as well I guess. I don't know much about this sort of stuff.

[BigRAWesty]

Yea fark Chris not a pleasant finish.
Unfortunately I think that rad leak may have been a good contribution.
As Matt mentioned it's not while running that's the issue..
Hopefully that pump isn't impacted

[mudnut]

Bugger! Bugger! Bugger!

[Woof]

Bugger mate......

[Winnie]

Not much. Probably not even a tablespoon. What can happen is you can have a blown gasket or cracked head, while running this may not be a problem. Its when the vehicle is stopped and it can leak some coolant into the bore. Then when you start it next time it can bend the rod. There are many other variables and consideratios to take into account. But not returning coolant and having a pressurised system (coolant being pushed out of expansion tank.) Can be a sign of conbustion pressure entering the cooling system.

I'm no expert but surely I would not have gotten 150km up the road if that were the case though?

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[mudnut]

Yep. The bent rod can cause the bore to wear unevenly and the bottom rings to pull down further than usual and eventually fail.