Why idle before shut off?

[Don87]

ok i see your point and can agree on that because the oil will be in the rings groves created during the honing process not the piston rings but in the cylinder its self but it cant be very much oil to change the level like others have stated thats what i was getting at because if thats the cause it would smoke and would be a weak motor

Yes sir, you are correct, it's not enough oil to cause a drop in the pan, but oil has to be there or the rings would heat up and sieze.

 

[whodat526]

and in some peoples case just cause they see it dont mean its there i have road in a truck with a mad like that now talk about scarry 8 hour ride

but it shouldn't use enough oil to drop the oil level unless u dont change it when u need to and let the oil break down and thin out

 

[whodat526]

Yes sir, you are correct, it's not enough oil to cause a drop in the pan, but oil has to be there or the rings would heat up and sieze.

and i have seen rings sieze to cylinder walls and break but figured that was because somebody over heated the engine which could be the case on some occastions. but u make all the sense in the world with that because everybody thinks the water is for cooling and oil is for lube but oil is also used for cooling down

 

[Don87]

and i have seen rings sieze to cylinder walls and break but figured that was because somebody over heated the engine which could be the case on some occastions. but u make all the sense in the world with that because everybody thinks the water is for cooling and oil is for lube but oil is also used for cooling down

Yes sir, and thank you.........oil is used for lubrication and cooling.
Most people don't understand the concept, but that is the case.
That is why they put 'oil coolers' on vehicles that are going to be doing a lot of towing or working in the fields.

 

[whodat526]

i just have one more dump question if a farmall cub does not have a water pump, but is water cooled. would that be a exception to the rule or not? because it does have a thermostat does it hurt the motor to just shut it down before idling down.

i am just curious how that motor cools the water is all i have never worked on one of the motors in a farmall and is curious to know

 

[whodat526]

maybe people that was saying it would drop the pan level will read the last few post, so they will understand the concept of the internals of a engine and how the work

 

[Transit]

Do not think that the temperature is a constant 3,000 deg. from the center to the cylinder wall. The cylinder walls will be cool enough to keep the oil from burning off if the engine is not over stressed. Once the oil is gone the piston rings will shatter.

 

[whodat526]

i understand that 100%

 

[Don87]

i just have one more dump question if a farmall cub does not have a water pump, but is water cooled. would that be a exception to the rule or not? because it does have a thermostat does it hurt the motor to just shut it down before idling down.

i am just curious how that motor cools the water is all i have never worked on one of the motors in a farmall and is curious to know

I personally have never worked on a cub, so I can't answer the question.
But I am looking to possibly buy one...........and after looking over the water circulation process, I'll be sure to post my findings here.

But since you told me about the 'no water pump'........I may have to rethink my ideas.

 

[johnrex62]

i just have one more dump question if a farmall cub does not have a water pump, but is water cooled. would that be a exception to the rule or not? because it does have a thermostat does it hurt the motor to just shut it down before idling down.

i am just curious how that motor cools the water is all i have never worked on one of the motors in a farmall and is curious to know

That is a great question! :anyone:

I would expect that convection circulation is in effect and the running state of the engine would be irrelevant other than to provide an oil bath to certain parts until they cooled sufficiently. I don't know if the engine temperatures get hot enough for this aspect of cooling or metalurgy to be critical though.