D24T.com - Head gasket & over heating

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The oil feed for the cylinder head is located around the cylinder head bolt on the injection pump side between cylinders 3 and 4. Or right behind the vacuum pump.
There is several drains, but I would highly doubt those would cause an oil leak.

Quote:

Originally Posted by anders (Post 10092)

Very true.. But there is only steam holes on the injection pump side, the manifold side of the head gasket is for coolant flow, notice the picture of the head gasket, the coolant passages on the manifold side get larger from cylinders 1 to 6.

Yes indeed. Those holes are to direct coolant at the exhaust ports.

That's good to know thanks, the engine is fitted to a boat, I have just remembered that about 4 years ago the sea water pump which is located just over the front of the engine leaked saltwater over the engine, it is possible that the end of the camshaft has become rusty and damaged the seal. I may just put up with it until the end of the season as I don't have time at the moment to strip it down.
Thank you for your help.

Quote:

Originally Posted by FJ40Jim (Post 10091)

Don't do this. Srsly.
The coolant flow through the engine starts with the WP shoving cold coolant in the front of the block. Coolant moves to the rear of the block, circulating around all cylinders. At the rear of the block, coolant moves upward through large openings in the HG. It then flows forward through the cylinder head. exiting out the front side of the head to go to radiator.
HTH

Yes, I agree with you. The only way I could see this working is if the bypass is blocked/removed and the coolant is always pushed through the block, head and back.
The Evans waterless coolant is high viscosity that concentrated antifreeze, almost a mineral oil.
The printed instructions I got said remove the Tstat and all any bypass.
The UK instructions on line say don't do any of that, leave the mechanics alone and clean and fill.

The two extreme modes for the cooling system in my application are:
1. WOT up 10% grade to 14k feet, blowing 20psi of boost, pushing 8,000#. Here I need to suck all the heat out I can.

2. I stop at 14k ft and have lunch, the engine cools off. The engine idles 90% of the way back. Any heat produced is sucked out and I get white smoke and rough idle.

I think I am really pushing the thermal loading envelope.
So I added an extra cooling circuit for the inter-cooler, turbo and oil cooler. I can turn the pump and fan on/off separately.

Quote:

Originally Posted by Hecklebone (Post 10103)

The two extreme modes for the cooling system in my application are:
1. WOT up 10% grade to 14k feet, blowing 20psi of boost, pushing 8,000#. Here I need to suck all the heat out I can.

2. I stop at 14k ft and have lunch, the engine cools off. The engine idles 90% of the way back. Any heat produced is sucked out and I get white smoke and rough idle.

I think I am really pushing the thermal loading envelope.
So I added an extra cooling circuit for the inter-cooler, turbo and oil cooler. I can turn the pump and fan on/off separately.

Wow.Sounds awesome. I would really love to see&hear all this. I wish you had a G()Pr() cam!

Yes, I have two of the 4k GPs. I'll put one facing the engine when it get it running. Getting closer....

Please post a link to your videos. Thanks a lot.