New Game CMP Brain Teaser Trivia

[Phil Waterman]

Hi

Richard raises an interesting point, which I'll have to verify the next time I have a Chevy gear box out on the bench to see if the level changes depending which gear is selected.

Tony is getting very close but lets see if anybody can add to the reason.

Cheers Phil

[Richard Farrant]

Originally Posted by Phil Waterman

I'll have to verify the next time I have a Chevy gear box out on the bench to see if the level changes depending which gear is selected.

Hi Phil,
The level should not alter where ever the gears are as they are only displacing the oil from one side to the other. I was thinking this a trick question as never seen any reference to it in the publications.

[Phil Waterman]

Hi Richard

I've gone back to see if I pick this up from any manual and didn't find this in any of them either. This is just something you pick up after lots of years taking care of Chevy CMPs.

I had to stop and think about the displacement change, I was thinking of the 3rd to high engagement on the main shaft but that is above the static level of lube in the transmission.

A hint this is both about checking the level and putting lube in. If you have ever had trouble get lube in this may explain why.

Cheers Phil

[Tony Wheeler]

Originally Posted by Phil Waterman

A hint this is both about checking the level and putting lube in. If you have ever had trouble get lube in this may explain why.

I'm only guessing here, but if the filler hole is obstructed internally it can cause the oil to flood back out suddenly, giving the impression of full. I recall this happening on some car gearboxes in the past, and you have fill them very slowly to avoid floodback. It taught me not to trust floodback as an indication of full, and always wait for it to subside and do the finger check again. The temptation is to quickly put the filler plug back in to avoid a big mess on the floor, but that can lead to underfill.

I must confess though it never occurred to me to change gears, perhaps because I was working on lots of different cars and I never became familiar enough with their gearbox internals. However the problem is severe enough on some cars that you can't even insert the filler nozzle properly, and you have to hold it place and pump the oil in excruciatingly slowly. Maybe that's the case with the Chev gearbox in neutral...?

[Lynn Eades]

It has to be about moving 1st gear (mainshaft, big. gear) out of the way.
So my guess. You put the trans into 1st gear.

[Keith Webb]

Here's one for those outside Australia to answer (Mike C please hold off for a moment)

Why is the cowl vent on most CMPs found in Australia a different shape to those elsewhere?

[Tony Wheeler]

Here's one for Australian CMP owners, although anyone can have a crack at it:

In what way do chassis siderails produced for Australia differ from all others?

[Howard]

Originally Posted by Keith Webb

Here's one for those outside Australia to answer (Mike C please hold off for a moment)
Why is the cowl vent on most CMPs found in Australia a different shape to those elsewhere?

Is Ganmain counted as outside Australia?
No?

[Grant Bowker]

Originally Posted by Keith Webb

Why is the cowl vent on most CMPs found in Australia a different shape to those elsewhere?

A. They were already tooled up for that shape for another model (but I've no idea what model that might be)
B. Just to be different
C. To provide an identifying point for restorers 70 years in the future.