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Cockroach Individual M3 9/12/2026 PFC BBK, Euro Headers, MSW Engine Mounts

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    M3 has been used for house stuff,
    Untitled by Sam DaJam, on Flickr
    Untitled by Sam DaJam, on Flickr

    Can transport of 10ft PVC pipe
    Untitled by Sam DaJam, on Flickr

    Can move tables
    Untitled by Sam DaJam, on Flickr
    Untitled by Sam DaJam, on Flickr

    But we finally got the house moved in sort've. So I wanted to start using the shop and buying tools so I can do stop doing things out of a toll roll bag or borrowing a shop.

    I fixed the horn button, that got messed up fiddling with steering wheel hub at Road Atlanta. Checked the freon.
    Untitled by Sam DaJam, on Flickr


    And the project I was very excited on,
    Untitled by Sam DaJam, on Flickr

    I found one of these guys:


    Untitled by Sam DaJam, on Flickr

    Old Forum copy and pasta said it fit with the stock fan clutch so we gave it ago.

    PWR 5966

    + 25% additional cooling capacity
    + all aluminum construction - no plastic!
    + direct bolt-in alternative, even with factory fan shroud, fan, A/C condenser, oil cooler, and even supercharger kits and accessories*
    + proven under intense endurance racing conditions

    $1,029 NEW.

    The PWR all aluminum radiator is known throughout the world for its superior cooling capabilities. PWR products and technology are used in a multitude of racing classes ranging from F1, BTCC, WRC, Grand-Am, SCCA, Australian V8 Supercars, and NASCAR. Turner Motorsport uses PWR components in our E46 M3, E92 M3, and M3 GT racecars. PWR’s cutting edge design utilizes aircraft-grade aluminum and an oven brazed bonding technology to assure trouble free and reliable cooling even in the harshest conditions. Other radiators use a standard epoxy-seal assembly which can eventually become fatigued and crack due to constant heat cycling and vibration. The PWR radiators used in our own racecars offer an additional 25% cooling capacity, direct bolt-on fitment for E46 M3 (no modifications required to front core support) and precision-machined and TIG-welded end tanks. Each radiator is pressure-tested during manufacturing. We have used this radiator with several E46 M3 builds in our shop, including using the Turner oil cooler kit and AA/HKS Stage 2 supercharger packages (intercooler + s/c oil cooler). Professional installation under these circumstances is strongly advised to ensure the correct fitment and routing of these components. The PWR radiator for the E46 M3 proved to be a vital component to the TMS Racing effort and can easily carry over to your race car or street car for years of reliability.


    This is a giant 55mm single pass radiator. I had 4 to compare too total. Bimmerworld C&R, Koyo, 2016 Date code Modine E46 M3 and this PWR. The C&R while looking the most complex, highest fin density and being a triple pass wasn't something I want to try yet as triple passes don't seem to work well at low air speeds. I still put many many street mile on this so the PWR was what I was after.

    Here are my measurements of core volume, which is a very crude way to compare. However the fin count, and tube counts didn't look very different. C&R was only one that really too out.
    Click image for larger version  Name:	image.png Views:	0 Size:	81.1 KB ID:	359830

    I also had a CSF E36 M3 rad to compare to out of a s54 swapped car for shits n giggles.

    Anyways this PWR is no joke, and it was a very very tight squeeze but it fit. I have some Morehead mounts I'll install for the engine. As well as some crude zipties to make sure the rad doesn't get closer to the fan at all.

    The aftermarket upper rad hose started leaking so I bought OE top hose and a new expansion tank. I had a used one to use in interim to wait for the Genuine BMW stuff.
    Untitled by Sam DaJam, on Flickr


    That came in:
    Untitled by Sam DaJam, on Flickr

    Highway was 176F with OBC saying that ambient and A/C on. A/C off is like 171-172.
    Untitled by Sam DaJam, on Flickr


    Stopped traffic it was sitting at 194. Very happy with that. Now this doesn't say fuck all about if it will fix my car running hotter than I'd like in 85F + at Road Atlanta, but definitely running cooler on the street than before. Why I put in the bigger rad

    Untitled by Sam DaJam, on Flickr
    Untitled by Sam DaJam, on Flickr

    Bluebus and header update next
    Untitled by Sam DaJam, on Flickr
    Last edited by samthejam; 06-27-2026, 09:29 PM.
    Build Thread:
    https://nam3forum.com/forums/forum/m...-new-pb-at-msr

    Comment


      Originally posted by samthejam View Post
      M3 has been used for house stuff,
      Can transport of 10ft PVC pipe
      Can move tables
      Honestly, my friends would joke that the E46 is always *just* big enough for whatever it is that you want to transport hahaha
      2005 ///M3 SMG Coupe Silbergrau Metallic/CSL bucket seats/CSL airbox/CSL console/6 point RACP brace/Apex ARC-8s
      Build Thread | Community Patch | MSS54 DS2 Tool

      Comment


        I'd be skeptical if the radiator reduces the peak coolant temp but should cool down faster.

        Comment


          €uros by Sam DaJam, on Flickr
          €uros by Sam DaJam, on Flickr

          Heat has been brutal
          Hood clearcoat cracked in some spots and my mirror melted. So oval mirror is on the way, also with the Bluebus, deleted the CD changer. Got the different amp bracket, and and trunk carpet

          Headers came in, just need to lay on back and install them. They got coated

          €uros by Sam DaJam, on Flickr
          €uros by Sam DaJam, on Flickr


          Build Thread:
          https://nam3forum.com/forums/forum/m...-new-pb-at-msr

          Comment


            Howdy, still alive.

            Car hasn't got touched until a couple days ago. I have just been working.
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on FlickrUntitled by Sam DaJam, on Flickr

            Which has been work and this WRL car. I did a bunch a work on it and it actually did take home a win in GP1 at the WRL Watkins Glen Race Saturday.

            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr

            Well, it has kinda be in my only workspace area. So I bought some dollies to take car of some stuff I wanted to on the M3 because I have some events I wanted to do soon.

            MSW Engine mounts to try and prevent the mech fan from partying with anything. While engine mount arm was off I did the headers. I also got a NOS PFC BBK, so I did the fronts as my front pads were getting pretty low. I'll install the rears at some point but it will delete the rear ebrake and I'll wait for that fun.

            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr
            Untitled by Sam DaJam, on Flickr










            Build Thread:
            https://nam3forum.com/forums/forum/m...-new-pb-at-msr

            Comment


              Essentially just took out some stuff I've already and replaced and upgraded for better stuff. I am about to reach 50k mile soon I have put in the car. I have a set of OE bearings to get WPC treated and will be doing a new oil pump at that time as well. If the bearing wear looks decent at 50k, will stretch it out further on next interval is what I am thinking. I have no real reason to do them again besides paranoia.
              Build Thread:
              https://nam3forum.com/forums/forum/m...-new-pb-at-msr

              Comment


                Just read through this whole thread, what a doozy! I've semi-followed the process of this car's build through Instagram stories, but it was cool to see everything all laid out in a proper thread. This car has come such a long way, glad it's been mostly good to you. Any time you can drive that far to multiple track days and get home under your own power is a good time.

                Comment


                  Originally posted by dannyzabolotny View Post
                  Just read through this whole thread, what a doozy! I've semi-followed the process of this car's build through Instagram stories, but it was cool to see everything all laid out in a proper thread. This car has come such a long way, glad it's been mostly good to you. Any time you can drive that far to multiple track days and get home under your own power is a good time.
                  Yeah the cockroach has been a fun journey, I need the parts prices to chill out though. Glad you enjoyed reading through it!
                  Build Thread:
                  https://nam3forum.com/forums/forum/m...-new-pb-at-msr

                  Comment

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