1993 80 series auto with 1HDt: 3inch body lift

[Bright Red]

Engine reco'd 243k, 253k started losing water to over-flow tank: Head off, planed, valves & injectors re-seated. Lasted 5 days before losing water again: Head off another test and over haul with new injectors and thickest head gasket: Lasted 3000k & doing it again.
There is no oil in the water, it appears to only be pressurizing the cooling system, some water could be going out exhaust but no visible sign. suggestions welcome.

 

[BILT4ME]

Engine reco'd 243k, 253k started losing water to over-flow tank: Head off, planed, valves & injectors re-seated. Lasted 5 days before losing water again: Head off another test and over haul with new injectors and thickest head gasket: Lasted 3000k & doing it again.
There is no oil in the water, it appears to only be pressurizing the cooling system, some water could be going out exhaust but no visible sign. suggestions welcome.

Sounds like a cracked head to me.

 

[bj70bc]

check the deck for flatness/true-ness?

 

[mudgudgeon]

Does it have a good radiator cap?

 

[TheBussman]

head was cracked on mine, couldn't see it until it was mag tested.

cap is the first step though.

 

[Bright Red]

Thanks for the info. New cap done first time it happened. Crack tested twice although I do not know if it was mag tested. No water in the oil either.