CGT Restoration - Update

[Phil Waterman]

Hi Bob

I'm really going to take a look at a way of confirming flow rates, there are a couple of things that I'm curious about 216 vs 235/261 pumps and the effect of the flex type radiator hose vs the smooth or formed hoses. We used use some relatively cheap flow meters on some of the big mechanical projects I did in my consulting days.

Next step is to bring the original 216 engine down from the loft of the barn so that I really can start comparing dimensions to figure out how this really should work.

Does your Pat 11 have the mini shroud meant to control the sonic boom at the tip of the fan blades? Just kidding, at max RPM the tips of the blades are only moving at Mach .2126 only sounds like they are breaking the sound barrier. But does your truck have the shroud pictured below?

[Phil Waterman]

Hi Bob

I've gone with 30W detergent oil though did add a two quarts of 20W when the oil line T broke off. I went over to running synthetic 2 cycle oil mixed with the gas when breaking in an engine a few years ago, something like the 50 to 1 ratio to start and then less as things go along. I also lube the engine parts like crazy with the gooey assembly oil. Then before fire an engine I put the block heater on it bring it up to 120F prime the oil system up to full pressure with the drill driving the oil pump. Then I turn the engine over by hand or with the starter with the drill driving the oil pump. Let it sit then do it again the next day before trying to start the engine.

[Walde Libera]

Phil
Been away playing in the snow in the Caribou, none in Vancouver. Lots of high tech talk on the old 1929 designed stove bolt. Good stuff gentlemen.
I used to rebuild Detroit's and just before I dyno'd the engines it was standard practice to pre-lube freshly rebuilt engines mostly to ensure valve trains were adequately lubricated. It takes a minute or 2 for oil to reach the valve train, if couldn't do this in the field I used the the starter with just a non-firing to spin over for a minute. Also just pouring a quart of oil along the top of the head with the valve cover off. You tend to get a bit of splash but its a good idea to observe how things are moving. I have found even the best mechanics find issues with things breaking at start up, like keepers popping out of valve stems, rockers breaking and things like that. Also at first fire up in the initial run just to observe oil pressure beginning to ooze out of the the rocker shafts. After oil pressure checks and a final check for coolant air pocket traps in the head the the cover goes back on for a warm up run, usually babied until 110F then mid-speed until the thermostat cycles, this is where leaks start to show up. Caution is to stay away from hot water blasts from vents and rad overflows, been caught a few times. Most of the time its a hose tightening, others times its a revelation in jobber rebuild quality like leaking water pump seals. So it is normal to find issues (sometimes). With the engine cooling down I spray it down a little with thinners to wash the external oil spills off. Just make note of the fumes and enclosed spaces near ignition sources. Than tested it in chassis, with no major issues, just a leaky radiator, since replaced with a good one. I painted the engine light grey, but it looks too white for my liking. Then I made a temporary driving station and drove the CGT around to my back yard, tarped it and proceeded to the next project; making a couple of CGT fuel tanks.
Walde

[Bob Carriere]

Hi Walde

You should take a look at the .....%$#@@%$... hate to say the word...."New Ford Grey" engine color..... nice mid range grey with a touch of blue tint...... looks very much like some of the old grey chev blocks..... at least to my eyes anyways....... even available at Cdn Tired!!!!

Bob

[Gunner]

There may have been different specs during WWII but all my references and many RCEME oldtimers have told me that the DND spec for painting rebuilt engines (usually done by contractors but sometimes inhouse) is "light" or "industrial" grey. Sure makes spotting leaks easier!



Mike

[Bob Carriere]

.... and they used the same light grey on Chev or Dodge engines.....

Although I have seen complete rebuilt GM 6 cyl. engines ..."drop ins" for CCKW in the plywood crate that were OD green..... complete from bell housing, clutch, carb, and water pump... starter and gen......no fans.... probably all made into Toyota bumpers by now....

My M43 had a rebuilt 251 engine with 900 miles on it..... painted a shinny dark Bell Canada green like late 80 civvy/ military trucks.....Marcel had a primer red in his M43 with less than 500 miles... both trucks came from Petawawa in 73 or 74.... they had special breakin instructions glued to the inside driver's windshield....

If you look at paint samples for the 1940 factory medium grey with a blueish tint..... it is very close to the new Ford grey currently available at Cdn Tire.

Mike.... are you still trying to dig yourself out...???

Boob

[cletrac (RIP)]

During the war when the motors were rebuilt they came out with a coat of khaki but the tappet cover and accessories stayed the original grey and black. Two of my Chev motors are like this.