Roddie's water-cooling bottle for bench-running

getback wrote:Looks about ready buddy !

roddie wrote:Yes Brad! Here's my test-station..







There's over 25 min. (00:25:38) of cooling capacity using the 2L. bottle with med. size silicone fuel-line feeding a coil of 1/8" Alum. tubing. The outlet hose ID is approx. 3/32" ID and air/water temperature was 70 degrees F. A transparent (clear) bottle gives a visual reference of the water level.. and in case I wasn't watching; I placed a small inverted pan in the kitchen sink to provide an audible cue to alert me when the flow stopped...   (I can't help it..)


 Now that's a scientific experiment right  There ,, Looks Good !!    

The only thing I could improve on would be to put a little check-valve on the vent, for ease of filling. As it was; I squirted water all over the kitchen counter putting the full-bottle into its stand.

robot797 wrote:I always use a pump up plant sprayer for water cooling tests

but I must say your way is also great
do add a valve inbetween the tank and the engine
that way you can slow the flow
some engines dont like running when to cold

rsv1cox wrote:Nice run roddie, I enjoyed watching it.

Steam smoke or both?  Hot.  Could you incooperate a fan like the Cox Corvette and others?  How did you start it, pully off a starter or hand flip the flywheel?  

rdw777 wrote:Nice work on testing the marine engine roddie….Your set up looks like something found in a lab!!…. Lots of fun tinkering with these things

roddie wrote:

robot797 wrote:I always use a pump up plant sprayer for water cooling tests

but I must say your way is also great
do add a valve inbetween the tank and the engine
that way you can slow the flow
some engines dont like running when to cold

Hey Peter, I like that idea.. and I do have a pump-sprayer. Did you watch my vid? I don't know what to "take" from running that engine yesterday. I don't have a tach/app. to know the avg. rpm. There was a lot of steam coming off the head. Maybe it was just condensate flashing-off? I was concerned that the coil wasn't providing the level of cooling.. as compared to running an OEM Cox heat-sink.. but that's not likely. Water was flowing through the coil while the engine was running. It was the "steam".. that was freaking me out. The bench-run area had become "wet" in the 30 some-odd minutes prior to my capturing the video of the engine running.

It didn't seem like the engine was being over-cooled.. but who knows. This was my 1st "choke-tube" test... and I modified it with a velocity-stack. The velocity-stack may be key to getting more needed air through the venturi.. and into the crankcase. We'll see.

balogh wrote:Roddie I believe the water line should be closed and cooling provided only after the engine has started and is running. The cooling while cranking the engine takes away compression heat and makes starting more difficult. On the IC engine powered boats I have seen  the cooling only starts when the boat is placed in water and the propeller drives water into the intake scoop behind the prop, and through the cooling circuit.

robot797 wrote:
looks more like oil burning of to me
I have ran cox engines hot enough to melt the backplate
and that one does not look close to that XD