External Oil Cooler, let me see some pictures Options

[DanT]

that is very nice (IMG:style_emoticons/default/biggrin.gif)

[gothspeed]

Heres a hardline setup I made for a 912E... The customer wanted the stock front mount 911 oil cooler setup. Used a Mocal sandwich thermostat.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i97.photobucket.com-3502-1278872083.1.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/i97.photobucket.com-3502-1278872083.2.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/i97.photobucket.com-3502-1278872084.3.jpg)

That is one of the best looking setups I have seen on a 4 cylinder (IMG:style_emoticons/default/smile.gif)!!!

I am building a carbed 2.0 4 cylinder GT replica and want to run a small 'front' oil cooler between the bumper and valence to 'complete' the GT look (yes even though it is a 4 cylinder) and would love to have a setup like this!!!

What size thread is that thermostat you used?

[BigD9146gt]

What size thread is that thermostat you used?

It was the Mocal BSP thread, which I drilled and re-tapped to an M22x1.5, just the right amount of material to get away with it. I used the early/small 911/9146 case fittings. The tubing is all 22mm (.875) OD.

[jhadler]

Elephant sells an adjustable fan switch (160 to 200 F). In use here on a 3.2. This car a factory -6 that I didn't want to hack up. This is just a street car so cooling requirements are not so high. Seems to do well. Temp measurements using an infrared thermometer are erratic, but there seems to be 20F difference in vs out.

I like this setup from a convenience and compactness standpoint.

What would people think about cutting some sheet metal away and ducting the waste air from the cooler directly down and under the motor with a shroud?

-Josh2

[tradisrad]

Elephant sells an adjustable fan switch (160 to 200 F). In use here on a 3.2. This car a factory -6 that I didn't want to hack up. This is just a street car so cooling requirements are not so high. Seems to do well. Temp measurements using an infrared thermometer are erratic, but there seems to be 20F difference in vs out.

I like this setup from a convenience and compactness standpoint.

What would people think about cutting some sheet metal away and ducting the waste air from the cooler directly down and under the motor with a shroud?

-Josh2

I think the important part is to make sure that hot air is not going into the combustion chamber, so ducting it out the bottom should be ok.

[brp986s]

The fan is exiting up here. The fan is 20% less efficient in push-mode according to the manufacturer. Until I learned that I considered ducting down and using that air as input to the heat exchangers since the engine came with block-offs. I balked at the cost of custom HE's and just run MSDS headers. Don't need heat in So Cal anyhow.

[tradisrad]

a little follow up:
Before I installed the oil cooler I was seeing engine temps climb into and past the 220 degree mark on my commute home. Yesterday afternoon I had my first commute with the oil cooler and my oil temps never climbed more than a needle width above 180 degrees. I am seeing a 40 degree difference!

It seems that the oil takes a little longer to heat up to operating tempratures and my over all oil pressure is higher with the cooler oil temps.

now I am wondering if my oil pressure is too high. My gauge is pegged at 80psi until I reach the 180 temps then I see 60+ psi on the freeway at 3400 rpm. Idle oil pressure is 20psi. I am thinking of playing with the relief springs to see if I can drop it a little. I've got the long relief valve and stiff spring at the first by pass and I don't remember what spring plunget I have at the rear bypass.

I guess my question on this post is do I need to lower my oil pressure or am I ok? Also does one of the oil by-passes controll over all oil pressuse or do they work togeather? Am I worried about noting?

thanks
-Rob

[ME733]

a little follow up:
Before I installed the oil cooler I was seeing engine temps climb into and past the 220 degree mark on my commute home. Yesterday afternoon I had my first commute with the oil cooler and my oil temps never climbed more than a needle width above 180 degrees. I am seeing a 40 degree difference!

It seems that the oil takes a little longer to heat up to operating tempratures and my over all oil pressure is higher with the cooler oil temps.

now I am wondering if my oil pressure is too high. My gauge is pegged at 80psi until I reach the 180 temps then I see 60+ psi on the freeway at 3400 rpm. Idle oil pressure is 20psi. I am thinking of playing with the relief springs to see if I can drop it a little. I've got the long relief valve and stiff spring at the first by pass and I don't remember what spring plunget I have at the rear bypass.

I guess my question on this post is do I need to lower my oil pressure or am I ok? Also does one of the oil by-passes controll over all oil pressuse or do they work togeather? Am I worried about noting?

thanks
-Rob

..............I think you are not going to fine tune your oil system and get a much better result than you already have....The general rule of thumb is 10 psi of oil pressure for every 1000 RPM,s. Having 20 psi at idle with the engine hot is fine. The high side of 80 psi ...until temps reach 180 + is good also. keeps you from hammering on it until the engine is hot...a good thing.(at 3400 rpm) you have 60 psi.....your just a little high at this rpm but nothing to worry about at all....as your rpm,s reach 5000 I,m betting you do not have 100 psi., probably only 60-70. I think its far more important to have good idle oil pressure, as the engine sees a lot of time there., and you don't want it low., and if the TEMPERATURES get really hot (ambient air) the CRANKCASE expands and oil thins out dropping PSI....I think you are good to go as is.

[VaccaRabite]

I finished my Setrab with fans last night, under the rear trunk. Took it for a quick spin, no leaks, and the fans were working when I got home.

Going to take it for a longer drive this afternoon - one that had my oil temps at 240 earlier in the summer. Hopefully, now they will be at 220 or lower, given everyone elses experiences - and 220 is fine.

[VaccaRabite]

It was 93 during my 30 mile test. Prior oil temps were around 240 on ~85 degree days. Today I kept RPM between 3500 and 4500 to make sure the oil would get hot.
The oil never got over 200 today!!! 40 degrees difference.

[jaxdream]

It was 93 during my 30 mile test. Prior oil temps were around 240 on ~85 degree days. Today I kept RPM between 3500 and 4500 to make sure the oil would get hot.
The oil never got over 200 today!!! 40 degrees difference.

(IMG:style_emoticons/default/aktion035.gif) (IMG:style_emoticons/default/aktion035.gif) Now show us some pics , please .

Jack / Jaxdream

[VaccaRabite]

I'll take some tomorrow.
This is the cooler that I am using (the bigger one with 2 fans):
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.aircooled.net-1435-1279501692.1.jpg)

I was SUPER impressed with the difference in oil temps today. I fully expected to be running at 220, and that would have been good. I was amazed to see myself running no higher then 205 or so, especially on a hot day.

Zach

[tradisrad]

I'll take some tomorrow.
This is the cooler that I am using (the bigger one with 2 fans):
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.aircooled.net-1435-1279501692.1.jpg)

I was SUPER impressed with the difference in oil temps today. I fully expected to be running at 220, and that would have been good. I was amazed to see myself running no higher then 205 or so, especially on a hot day.

Zach

Very cool... it seems like you are having similar results to mine. I would like to see how you routed the hoses and what you did for a thermostat. We need pictures.
-Rob

[maf914]

I'll take some tomorrow.
This is the cooler that I am using (the bigger one with 2 fans):
I was SUPER impressed with the difference in oil temps today. I fully expected to be running at 220, and that would have been good. I was amazed to see myself running no higher then 205 or so, especially on a hot day.

Zach

Zach, Please don't forget to post some photos of your installation. I want to see that dual fan cooler in place. Thanks.

[VaccaRabite]

I will. Grad school classes started up again this week, and this time the class I am taking is a good 70 miles one way from my house, and it is a 3 hour and 45 minute class - after work. Its only 2 days a week, but on those 2 days I don't get home till 11pm. The other days my wife is in classes and I am watching my son. Chances are I will not be able to get pictures until Friday. But I will get them and post them.

Zach

[woodst]

Very impressive installations shown here.
I wonder if I should consider an additional cooler too.

I am building a 2336 engine and intended to use as many stock parts as possible, so the engine seems to be "original" when you look at it.
But will the original oil cooler be able to handle the bigger engine?

I don't get into racing or 2hr rides - just for fun on the street. Ambient temp uses to be 25 to 32°C in summer.

Do I have to install a setup similat to those presented here???

Cheers!
Malte

[VaccaRabite]

Malte, I would.

Zach

[qa1142]

What size is the oil filter thread? 18 x 1.5? 20 x 1.5? 22 x 1.5? (IMG:style_emoticons/default/popcorn[1].gif)

[McMark]

3/4" x 16

[qa1142]

So this?

http://www.jegs.com/i/Derale/259/25770/10002/-1

or

http://www.jegs.com/i/JEGS/555/51712/10002/-1

or

http://www.jegs.com/i/Moroso/710/23693/10002/-1


Thoughts and inputs?