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Fan assisted oil cooler
Posted by: shadowmxd ()
Date: November 15, 2017 11:16PM

My fan assisted oil cooler.
It seems to work well. When ambient temperatures in San Diego Ca. were 100+ degrees. My oil temp gauge stayed well below 250 degrees fahrenheit.

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Re: Fan assisted oil cooler
Posted by: RobertC ()
Date: November 16, 2017 12:32AM

What does "stayed well below 250 degrees Fahrenheit" mean?

245 degrees? Or, 180 degrees?

Or, below the 250 degrees mark on your gauge? And, above the 220 degree mark?

Though the installation is impressive, I would expect the same temp from a stock oil cooler / stock oil pan...

Where is the sender for the temp gauge mounted?



Edited 1 time(s). Last edit at 11/16/2017 12:34AM by RobertC.

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Re: Fan assisted oil cooler
Posted by: jjohnsonjo ()
Date: November 16, 2017 05:09AM

That is an impressive looking piece of equipment, but it looks like your dumping the heat you just removed from oil into the cooling system. With the stock system the heat goes right out the back door. Maybe a good way to improve heater performance??

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

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Re: Fan assisted oil cooler
Posted by: Wagon Master ()
Date: November 16, 2017 05:56AM

Just for my reference, what oil temps. were you seeing before in hot San Diego Ca. were 100+ degrees are the norm. Same gauge and sender location used before and after cooler install?

'64 Monza Coupe 140 4 speed
'61 700 Lakewood 95 4 speed
'69 Monza Convert. 140 Auto.

Been aircooled since 1973
Northwest Ohio

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Re: Fan assisted oil cooler
Posted by: john.jackson ()
Date: November 16, 2017 09:15AM

Wagon Master Wrote:
-------------------------------------------------------
> Just for my reference, what oil temps. were you
> seeing before in hot San Diego Ca. were 100+
> degrees are the norm. Same gauge and sender
> location used before and after cooler install?

Just FYI, 100+ temperatures are quite unusual here in San Diego. But we do get them on occasion. Last summer we had quite a few record heat days.

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Re: Fan assisted oil cooler
Posted by: cnicol ()
Date: November 16, 2017 09:30AM

While the installation is impressive, the reported maximum temperature baffles me a bit.

I put about 100k miles on my 140-powered high-roof FC camper. This combo was heavier than a car of course had had a very large frontal profile.

In my rig, oil temp was measured in the sump of an Otto oil pan using a VDO gauge. The rig had a stock 12-plate cooler with side plates.

For me 230-degrees was the "panic point" and I only got there while towing my dune buggy up a grade on a smokin' hot day.

I'm not sure why your reported temperatures are as high as 250F when your car is smaller and lighter and your oil cooler looks so much larger.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts




Edited 1 time(s). Last edit at 11/16/2017 09:31AM by cnicol.

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Re: Fan assisted oil cooler
Posted by: dryenko ()
Date: November 16, 2017 10:35AM

Because the cooler bypass valve is open ??

Bob C aka Dryenko
Dobson, NC 27017

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Re: Fan assisted oil cooler
Posted by: MattNall ()
Date: November 16, 2017 10:45AM

Over the years with Sandcars... [ hillclimbing ] IF the bottom end [ crank and rods / /rod bearings were built "tight" then sump temps increased dramatically.

Opening up Rod side clearances really helped..







MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Fan assisted oil cooler
Posted by: shadowmxd ()
Date: November 16, 2017 11:43PM

After I made this post I realized I didn't give enough information.
I have owned and driven corvairs since 1970. In all honesty I have never had an oil temp gauge on any of my early 'vairs. I had 110's and 140's all stock with the 12 plate oil cooler.
A little about this engine:
- 3.0L, 2-44idf weber carbs on modified 140 heads, cam similar to an OT-30, 409
oil pump gears.
oil temp sender is located near the block were the cooled oil returns to the
engine.

Ambient temp 100+, 3500 RPM for 50 mile run oil temp reading 215-225 degrees f.
Ambient temp 100+, 2500-2800 RPM for 50 mile run oil temp reading 200-212 degrees f.
These were some of the hottest days we have had in San Diego. I drove to the Inland Empire...it was hotter. My temp never reached 250 degrees f.
Engine has full shrouds, Otto finned valve covers and oil pan.

Would a stock oil pan and stock 12 plate oil cooler give the same readings as RobertC pointed out? I don't know.
jjohnsonjo makes a good point about dumping the extracted oil cooler heat back into the cooling system. I have opened the engine hood after a hot drive, the air generated by the fans is actually cooler.

Wagon Master - I don't drive my Corsa that much these days or for extended trips. My truck, motorcycle and daily driver were down so I had to drive the Corsa. Those days were so hot, I payed close attention the the oil temp. However, when I have driven the car on less hot days(75-80 degrees f) my temp would hover around 200 degrees.

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Re: Fan assisted oil cooler
Posted by: azdave ()
Date: November 17, 2017 04:55AM

shadowmxd Wrote:
-------------------------------------------------------
> I have opened the engine hood after a hot
> drive, the air generated by the fans is actually
> cooler.

Those are some magic fans. smiling smiley

If it works for you then that's all that matters. If I were to install a remote oil cooler, I would probably place it in the left or right fender (with sheet metal mods) to exhaust the hot air under the car. My A/C condenser already pre-heats my engine cooling air. No desire to make that one step worse.


Dave W. / Gilbert Arizona
66 Corsa 140 4-speed w/factory A/C
66 Corsa 140 4-speed w/factory A/C
66 Corsa 140 4-speed
65 Corsa 140 4-speed
66 Corsa 455 Toro V8
65 Monza 455 Toro V8
65 Monza 110 Convertible
65 Monza 4DR 140 PG w/factory A/C
65 Monza 4DR EJ20T w/5-speed




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Re: Fan assisted oil cooler
Posted by: Spectre ()
Date: November 17, 2017 05:06AM

The heat load dumped from the oil cooler can't be as bad as the heat from an AC condensor that ALL of the cooling air passes through.

David Clamp


1965 Corsa convertible - 140 4spd/3.55/AM-FM

2013 Mustang GT convertible - 5.0, 6spd auto, Procharger i-1

2003 Miata SE - 6spd manual (wife's toy)

"Victory is mine!" - SG

Oklahoma City, OK

Click for Oklahoma City, Oklahoma Forecast

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Re: Fan assisted oil cooler
Posted by: azdave ()
Date: November 17, 2017 05:16AM

Spectre Wrote:
-------------------------------------------------------
> The heat load dumped from the oil cooler can't be
> as bad as the heat from an AC condensor that ALL
> of the cooling air passes through.

True. But you can turn off the A/C for a few minutes if you have a brutal mountain pass to climb.


Dave W. / Gilbert Arizona
66 Corsa 140 4-speed w/factory A/C
66 Corsa 140 4-speed w/factory A/C
66 Corsa 140 4-speed
65 Corsa 140 4-speed
66 Corsa 455 Toro V8
65 Monza 455 Toro V8
65 Monza 110 Convertible
65 Monza 4DR 140 PG w/factory A/C
65 Monza 4DR EJ20T w/5-speed




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Re: Fan assisted oil cooler
Posted by: American Mel ()
Date: November 17, 2017 10:07AM

azdave Wrote:
-------------------------------------------------------
> shadowmxd Wrote:
> --------------------------------------------------
> -----
> > I have opened the engine hood after a hot
> > drive, the air generated by the fans is
> actually
> > cooler.
>
> Those are some magic fans. smiling smiley
>
> If it works for you then that's all that matters.
> If I were to install a remote oil cooler, I would
> probably place it in the left or right fender
> (with sheet metal mods) to exhaust the hot air
> under the car. My A/C condenser already pre-heats
> my engine cooling air. No desire to make that one
> step worse.

Dave, no need to be facetious.
Shadowmxd does not say it, but it sounds like he was not using an actual thermometer, and moving air will always FEEL cooler even if it is somewhat warmer than still air. (why do we put fans in our houses in the summer?)
But yes, you are correct that there is some heat added to the incoming cooling air.

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater

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Re: Fan assisted oil cooler
Posted by: Max Roeder ()
Date: November 17, 2017 02:09PM

Anytime you can help pull heat out of the oil it's a good thing. I'd be interested in seeing how you tapped into the flow circuit. I am assuming you replaced the 12 plate cooler with the cooler with the fans.

What one has to be aware of is introducing additional pressure drop when you are pulling oil out of the discharge port from the pump. The pressure drop or loss of pressure is unavoidable no matter what you do but you want to be aware of this fact. You won't see it on your gauge because that gauge port is well after the oil has been sent through the cooler. You don't know how hard the pump has to work to create the pressure you see on the gauge. If you could put a pressure tap every turn in the oil pressure path we could see how much additional work the pump, bronze distributor gear and distributor pinion gear has to do to get the oil out and up through the engine.

I'm posting some pics of the standard oil cooler adapter and the seals in the compressed or "crushed" state in a simple fixture so you can see some of the small problems that add up to additional pressure drops. These images you never see because their hidden behind structures like the OEM coolers or adapters.

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