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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Jan-09-2019, 12:37:21 PM   #11
Obioban
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

I'm going back to OE. Before I do so, I plan to send it here to be cleaned:
http://www.oilcoolers.com/

They have a very positive reputation in the air cooled community, and are pretty cheap:

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..We are the world’s largest FAA Repair Station for aircraft oil coolers. We also service a large number of automotive oil coolers, radiators, and heat exchangers. We put the automotive units through the same exacting cleaning and repair process that the aircraft units go through, but at a fraction of the aircraft cost. The results speak for themselves, with very high quality results.

The basic overhaul cost for automotive units is $125.00 each. That is to decontaminate the inside and outside and assess any repairs that are needed. For your unit, we can either re-attach any broken off fittings that you’ve got – or machine new ones and weld them into place. Please note that the repairs are billed at our normal shop rate of $100. Per hour, on top of the standard overhaul cost of $125.00 per oil cooler. Also know that we can do a lot of work in an hour, so it is rare that anyone spends more than $225.00 for the overhaul AND the repairs, combined.

We normally will need your oil cooler for about one week to rejuvenate it. We will be happy to examine it for needed repairs and quote those to you before we begin work. No matter the case, if we can’t repair it and make it work for you (which sometimes happens if there are core leaks caused by corrosion), then there is no charge at all.

So put it in a box along with any broken parts you have that need to be welded back on and send it to us...
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Old Wed, Jan-09-2019, 01:22:43 PM   #12
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

I have had alot of luck with Setrab coolers in the past
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Old Wed, Jan-09-2019, 01:50:16 PM   #13
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

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Originally Posted by Drewster View Post
For your specific setup - that I've seen pictures of - I was surprised you didn't exit through the fender (like the newer M2, ZL1, etc.).. that would probably give you the airflow you need, and get it further away from the radiant heat of the headers.

Thatís what Paffy did and he reported back that it worked well. I wanted to get it higher up so itís protected from impacts. But if OEMs are locating coolers there then I probably shouldnít be so worried about damage.

One adjustment Iím going to make is duct the enclosure from the headlight instead of the fog light area. Worst case, I cave and move the cooler to the lower bumper area.



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Old Wed, Jan-09-2019, 02:29:37 PM   #14
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

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Originally Posted by bigjae1976 View Post
Thatís what Paffy did and he reported back that it worked well. I wanted to get it higher up so itís protected from impacts. But if OEMs are locating coolers there then I probably shouldnít be so worried about damage.

One adjustment Iím going to make is duct the enclosure from the headlight instead of the fog light area. Worst case, I cave and move the cooler to the lower bumper area.
Dumb question, but if you're going to that level, do you already have a vented hood? Still retaining A/C? Sorry, I'm not familiar with your car/setup.
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Old Wed, Jan-09-2019, 04:26:00 PM   #15
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

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Originally Posted by TrackRat951 View Post
Dumb question, but if you're going to that level, do you already have a vented hood? Still retaining A/C? Sorry, I'm not familiar with your car/setup.

I have the N15 hood vents and no AC. I have a build thread in the member forum which includes all of the good stuff Iíve done and none of the bad stuff

My OE oil cooler is pretty beat up. Honestly, replacing that should have been the first thing I did before adding a second cooler.


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Old Wed, Jan-09-2019, 04:32:43 PM   #16
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

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I took out my OE oil cooler a while back, and flushed it. You wouldn't believe the amount of crap that came out, not just from the outside. Oil lives there you know.. flushing it removes any buildup and restores its original performance. That's the best bang for buck for street driven car with occasional track day. I were building a race car, I'd do two oil coolers in series.
How did you flush it and what did you use?
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Old Wed, Jan-09-2019, 09:00:10 PM   #17
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

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Originally Posted by bigjae1976 View Post
I have the N15 hood vents and no AC. I have a build thread in the member forum which includes all of the good stuff I’ve done and none of the bad stuff

My OE oil cooler is pretty beat up. Honestly, replacing that should have been the first thing I did before adding a second cooler.

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Cool! I'll check out the build thread. Without AC, I'd honestly either get a new OE unit, or just grab a decent sized Setrab and mount it in front of the radiator. Duct the lower opening in the bumper to the Setrab, and let the exhaust air mix with the air headed into the radiator. Yeah, it will affect the radiator's ability to cool a bit, but with the vented hood this shouldn't be a problem.

Edit - After seeing your build thread, definitely ditch that secondary cooler. Grab the 9 series Setrab, weld up a mount to locate it behind the bumper support, and use your fiberglass skills to make a decent duct in the lower bumper opening.

Last edited by TrackRat951; Wed, Jan-09-2019 at 09:06:36 PM.
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Old Wed, Jan-09-2019, 09:25:11 PM   #18
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

Loving this thread
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Old Wed, Jan-09-2019, 09:33:12 PM   #19
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

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Originally Posted by TrackRat951 View Post
Edit - After seeing your build thread, definitely ditch that secondary cooler. Grab the 9 series Setrab, weld up a mount to locate it behind the bumper support, and use your fiberglass skills to make a decent duct in the lower bumper opening.

Werd. Iíve also been looking at a front mount in front of the radiator. My water temps are 195-200 on track. Thatís peak, temps sit around 185-190 most of the time. Figure I can give up some water cooling.

Iíve been looking at the ductwork in front of the radiator. Most of the airflow goes in the lower bumper and then up and through the radiator. You also get flow through the kidney grills.

Iím thinking I want to install a big azz Setrab in the front and then fab ductwork to seal the backside of the cooler to radiator.

Heck...Iíve been contemplating installing a non-M radiator if I go with a front mount.


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Old Thu, Jan-10-2019, 10:00:08 PM   #20
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Default Re: Best Oil Cooler (CSF, C&R, OE??)

It's seeming like my options are to get hooked up with a CSF for $475 OR do a new OE cooler for $415 which includes the FCP lifetime warranty.. stock with warranty is sounding very enticing. I feel like throwing extra weight low in front of the car is not something I want right now
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Discussing Best Oil Cooler (CSF, C&R, OE??) in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)