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D6D engine overheating
- Thread starter .RC.
- Start date
.RC.
Senior Member
Yea, it is more red paint you can see than rust, but a bath would not do any harm. It will be DIY, I would not even know who locally would do acid bathing but no doubt they would charge a mining tax.
Might even do an electrolysis bath. I already have all the ingredients for that.
OzDozer
Senior Member
I use citric acid for my acid baths, it's safe, effective and simple and it doesn't eat into good metal. Once it's pulled from the bath, all it needs is a pressure wash. I spray the cleaned item with about a 10% solution of phosphoric acid ("Ranex" - get it from Bunnings) and this prevents flash rusting.
.RC.
Senior Member
Thanks, not having any citric acid here at this point in time, I made up an electrolysis bath.
After 10 hours I pulled it and washed it and there was a lot more gunk and rist on it then I thought.
I have it back in the bath for another run at the moment.
After 10 hours I pulled it and washed it and there was a lot more gunk and rist on it then I thought.
I have it back in the bath for another run at the moment.
.RC.
Senior Member
I am not as pleasing on the eye as pkw is in this photo in his thread here https://www.heavyequipmentforums.com/attachments/20220603_175404-jpg.261003/
So here is just the new core.
So here is just the new core.
OzDozer
Senior Member
RC, was that core built locally, by someone like NATRAD?
.RC.
Senior Member
Yes locally built, the supplier told me the builder was Redback radiators whom only deal with agents.
This new core has more tubes connected to the headers then the old one. I will get a photo in the morning showing it.
www.redbackradiators.com.au
This new core has more tubes connected to the headers then the old one. I will get a photo in the morning showing it.
Redback Radiators
www.redbackradiators.com.au
.RC.
Senior Member
.RC.
Senior Member
Well my run of luck is certainly continuing.
I went to get a tube of rtv silicone from a shop yesterday, sorry no stock, so I thought I would just get it elsewhere. I went to the bolt shop, that also sells other odds and ends. Ahh they had some tubes so saved me a trip to another auto supply store.
I used it today. It came out of the tube sort of not what I expect of silicone, but it was still very sticky and a brand I had not used before. Until on the second gasket the nozzle just blocked up and I pulled out some cured stuff, then it just refused to come out. Cutting open the tube and the photo tells the story.
The **** must have been sitting on their shelf for years. No date of manufacture on the tube. I might shove it up their arses tomorrow. Or just politely ask for my $50 back.
Was hoping to get it all back together today and install tomorrow. I just hope the gaskets I used it on will still seal (I suspect they will). Otherwise is another $150 pissed up against the wall as the big gasket is $90 alone.
I went to get a tube of rtv silicone from a shop yesterday, sorry no stock, so I thought I would just get it elsewhere. I went to the bolt shop, that also sells other odds and ends. Ahh they had some tubes so saved me a trip to another auto supply store.
I used it today. It came out of the tube sort of not what I expect of silicone, but it was still very sticky and a brand I had not used before. Until on the second gasket the nozzle just blocked up and I pulled out some cured stuff, then it just refused to come out. Cutting open the tube and the photo tells the story.
The **** must have been sitting on their shelf for years. No date of manufacture on the tube. I might shove it up their arses tomorrow. Or just politely ask for my $50 back.
Was hoping to get it all back together today and install tomorrow. I just hope the gaskets I used it on will still seal (I suspect they will). Otherwise is another $150 pissed up against the wall as the big gasket is $90 alone.
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OzDozer
Senior Member
A maximum of 12 months on the shelf is the recommended lifespan for RTV, silicone and urethane sealants.
I'd get right up the sellers, selling crap like that is a good way to make purchasers avoid a business.
I'd get right up the sellers, selling crap like that is a good way to make purchasers avoid a business.
.RC.
Senior Member
Got my money back no problems, they said they had only had it on the shelf for eight months, but who knows how long it had been in the suppliers warehouse, or maybe this was just a quirk that only that tube had gone off, they did offer me a replacement tube.
In any case I have some JBweld grey silicone now. I used to use a bit of loctite stuff like 510 or 515, but the price for that stuff has gone ballistic.
In any case I have some JBweld grey silicone now. I used to use a bit of loctite stuff like 510 or 515, but the price for that stuff has gone ballistic.
Welder Dave
Senior Member
That would be a royal PIA when you're ready to do final assembly. I'd be really ticked off since my property is an hour away and even more ticked off if I had someone meeting me to help.
.RC.
Senior Member
Well it was another $30 in fuel to get a replacement tube. I have the radiator tanks bolted on now. I have decided to make up some blanks for the inlet/outlet and when the silicone is cured pressure test it under water with air, to see if there are any leaks.
The designer of the radiator tanks also did something sneaky. One bolt hole top and bottom is 5mm out of alignment with all the others. The manufacturer never picked up on this so I had to dremel a header hole out a bit.
The designer of the radiator tanks also did something sneaky. One bolt hole top and bottom is 5mm out of alignment with all the others. The manufacturer never picked up on this so I had to dremel a header hole out a bit.
.RC.
Senior Member
Pretty much ready to go back in. Leak tested and a bolt not done up tight was the only temporary problem. No leaks when held at 12psi and none at 15psi which is when the pressure cap opened.
I put some dense foam rubber between the two radiators to fill in the small gap and made up inserts to fit the other gaps.
I put some dense foam rubber between the two radiators to fill in the small gap and made up inserts to fit the other gaps.
Welder Dave
Senior Member
As long as the foam doesn't melt. I don't how much heat different types of foam can handle though. That would just be my concern.
.RC.
Senior Member
It is high density rubber foam. It will only see 80C max with this new radiator. 
Pony
Senior Member
I reckon it was at least that hot out in the sun today.
Good luck with it.
Good luck with it.
.RC.
Senior Member
I was starting to put it in yesterday and it was about 35C and 120% humidity, then a brief shower came over and the sun came and bumped the humidity up to 150%.
Queenslander
Senior Member
You weren’t under some of those big falls around CQ last night?
.RC.
Senior Member
No, long way away from here. I see 240mm south of Emerald and widespread 100+falls from the gemfields, all the way down through the arcadia valley.
Looks like here at 8am it is 30C already and 80% humidity.
$6/kg for steers here we come I hope with all this rain.
Looks like here at 8am it is 30C already and 80% humidity.
$6/kg for steers here we come I hope with all this rain.