dry block

[TOM 77]

does anyone ru a dry block in a diesel

 

[wi50]

i don"t personaly run one myself but know some fella"s and work on some tractors that do run dry.

Works fine and when the engines come apart for work you really can"t tell weather they have coolant or not. The blocks are dry with nothing special done. The heads get filled with a grouting compound, Embeco 885 is common and some guys use regular Hardblock, some use a fiber material.

 

[buickanddeere]

Pressure oil spray lube and cooling on the piston bottoms will make up for dry cylinder walls. Keeping the very top of the bore and deck cool wet heads.

 

[mshultz]

check around on piston clearance and ring end gap clearances. I'm pretty sure there's a formula that guys use for figuring them out based on your bore. You should expect a little extra heat build up and expansion so you need to build in extra tolerance so things don't get tight when it gets hot.....

 

[Tyler W]

We run our limited pro stock completely dry. No water anywhere in the motor. We did not change anything internally when we made the change. We drained the water, removed the radiator, and water pump. The heads are hard blocked totally solid. We do not drive it around in the pits and are very careful with starting it and running it other than a warm up at the pull and running down the track. We have made approximately 30 hooks the last 2 season this way. We are running around 1600 degrees on the exhaust temperature.

 

[buickanddeere]

So endurance is limited to thermal mass and the heat absorbed by the block, heads and the lube oil.
Spark ignition engines will become detonation prone as the cylinder head surfaces heat up.
I can see dry blocks with lots of lube oil cooling. However keeping the very top of the bore, block deck, head deck and combustion chambers is problematic unless the heads are wet.
Some of the dry block and dry head enthusiasm originated with top fuel dragsters. The heads and blocks are not strong enough to withstand the pressures and stress if hollow with coolant jackets. Every ounce of weight counts too.
It's easier and cheaper too, scratch building heads and blocks from a solid billet aluminum and not machining in coolant passages.
Not every tractor engine is so stressed. Although head gasket sealing is simplified with massive overbores with dry blocks and sometimes with dry heads.