Water in engine valley

[tokarev]

Water collecting in engine's valley - is there a drain hole I'm not seeing?

 

[BLK HMMWV]

yes it's in the very back end of valley. drivers side.
It drains out of the block.

 

[gimpyrobb]

Do they ALL have those? I thought only the ones with the tubes on the back had them?

 

[BLK HMMWV]

Not sure . I've only seen the ones with the tube in the back.

 

[gimpyrobb]

I've run across a few with out, thats why I asked.

 

[BLK HMMWV]

The drain hole in the valley seems about 1/8" in diameter compared to the drain tube about 1/4"

 

[86humv]

Only on later 6.5's

 

[tokarev]

The engine was replaced in 07 (tag on valve cover)

 

[Barrman]

I can look at the blocks in my class next week. But, somewhere around 1992-1994 when they changed over to the 6.5. The drain went from the small hole at the back with no tube to the bigger hole with the tube.

I like the tube because it puts oil, coolant or fuel leaking over to the side instead of inside the bell housing. Both for leak checking and to keep from burning up a clutch disc.

As as far as the leak itself. Coolant can only be coming from the front thermostat housing cross over which includes the thermostat, any sensor ports, heater hose and the actual attachments to the heads on each side or the two rear cross over block offs.

 

[TOBASH]

I like the tube because it puts oil, coolant or fuel leaking over to the side instead of inside the bell housing. Both for leak checking and to keep from burning up a clutch disc.

Clutch in a HMMWV?

 

[Wire Fox]

I need to unclog mine, apparently. My 6.5 GEP just holds water in the valley and I've bailed it out once when it rained while I had the hood open. I'm just glad that it apparently has a drain, because i was originally annoyed, thinking it didn't have one.

 

[86humv]

They drain tube goes down forward of the flywheel and is pinched to clear it.
Then its round again and comes out close to the 2ea. oil hose fittings.

 

[Barrman]

No, no clutch in a HMMWV. But thousands of engines from these trucks were sold as surplus. Who knows what they ended up in or might end up in. Someone searching 5 years from now for information about the valley drain might happen upon this thread.

With the older engines valley drain fuel leaking from the IP and running down the back of the block could make people think it is a bad rear main seal. Or cause a clutch to slip. That is why I wrote what I did a few post up.

 

[tokarev]

The water is from good old rain - another thing to do on Sunday after the fuel pump install.