Oil only warm?

gcg

Member
A little concerned about oil flow - I ran the '41 9N about a half hour yesterday, quite a bit of time at half throttle or so. It was about 38 degrees outside. I was showing 24 lbs of oil pressure on the new gauge and a couple drops came out of the governor as usual (I have more work to do here). So I have pressure and apparently have oil flow. After shutting it off, I noticed the oil filter housing was only warm. I pulled the dipstick and the oil was just barely warm. All external oil lines are clear and filter housing torn down and cleaned up as part of the restoration. Pump gears looked to be in good shape when the pan was off over the summer. Does the oil just not get hot in these engines? As always - thanks!
 
Do you have a t-stat installed? (see tip # 25 at the link below)

If you don't have a t-stat, then barely warm oil at 38* ambient temp doesn't surprise me.
75 Tips
 

Hi Bruce - yes, brand new thermostat that was tested before installing (also double-checked the direction it was installed).
 

thanks - I'll give that a shot. What really surprises me is the efficiency of this new radiator. The water going in is obviously extremely hot; by the time it gets into the lower radiator hose, it's just warm. Very large quantity of warm air blowing out the front as well. Now that the hood is on, of course, it's not safe enough to feel the temp on the upper hose above the t-stat anymore so I only check that after shutting the engine off - I can see why temp gauges are valuable :)

Gary
 

A few of the senior folks here told me in the past that the 8N was over engineered when it came to cooling.

I ran mine without a T-stat for a year because I had a blown head gasket and I wanted to eliminate all back pressure and the water rarely hit 140 degrees in mid summer.
 
warm air blowing out the front? are you using a pusher fan?

as was mentioned block off part of the radiator. my naa has a temp gage i have about half of the radiator covered when running in low temps - teens and below. without it the gage never seemed to get into the normal range.
 
(quoted from post at 20:47:54 12/08/14) warm air blowing out the front? are you using a pusher fan?

as was mentioned block off part of the radiator. my naa has a temp gage i have about half of the radiator covered when running in low temps - teens and below. without it the gage never seemed to get into the normal range.

Yep, it is pushing air to the front - and as far as I can tell it is the original fan - I simply assumed this was just how they were set up - thoughts?
 
The pusher fans were used on those tractors and if you think about the location of the air filter intake under the hood a puller fan would be blowing dirt toward that intake.

Mark
 
" I simply assumed this was just how they were set up "

Nope.

That was a dealer extra....like headlights.

They are really nice when you are bushogging, etc, and stirring up a lot of chaff that will get caught in the radiator fins.
75 Tips
 
I never did understand the advantages of a pusher fan.
It seems to me when it comes to chaff getting caught in the radiator it would still get sucked in to the fins but it would be on the back side and much harder to remove by hand.
Also, if you did much high speed driving it seems a pusher would cancel out any cooling you would get from the wind.
But they are popular. They will sell on Ebay for 2-3 times the price of the more common puller fan.
 
Seems perfectly normal considering the air temp. You can try to run the engine warmer, as others have suggested.

Colin, MN
 
gcg.........yep, semi-warm oil filter at 38* sounds normal. Yer 6-qt oilpan is acting like an oil cooler/radiator. As mentioned, always use the in-the-hoze thermostat. ........Dell
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top