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Thread: My 1999 M3 Progress Thread

  1. #426
    Join Date
    Oct 2015
    Location
    Richmond, VA
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    509
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    99 M3 Coupe, 99 Carrera
    No damage to the wheel fortunately, and I had a nice wide shoulder so while it sucks that it happened, I was fortunate it happened where it did. And yeah, really thankful for the full size spare. I've owned a few newer cars that don't have a spare at all and just come with one of those tire sealer kits...would have been useless in this scenario.

    Amazingly the Michelin was still holding air!

  2. #427
    Join Date
    Nov 2007
    Location
    Houston, TX
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    612
    My Cars
    1 Blue, 1 White, 1 Black
    Quote Originally Posted by sirhodjibob View Post
    Turns out RealOEM has the wrong part number listed for the diagnostic cap for OBDII cars (https://www.realoem.com/bmw/enUS/sho...diagId=12_1975). I had replaced it when the tether broke on my original with 12521724690 which has 4 pins. Correct part would be 12521703202 with 5 pins. Without the correct cover on the diagnostic port the OBDII port under the dash won't communicate. Anyways easy fix, hat tip to Brett for catching this.
    I was having the same issue with the OBD port in the car on mine, but I completely forgot about it. I'll have to check this on mine, as I replaced my cap with my tether broke also.

    Another win for BfC knowledge sharing.
    Past: '99 Hellrot/Dove M3 | '97 S14 1JZ | '06 Triumph Daytona 675 | '01 330I M-Tech I | '99 Silvia S15 | Current: '96 Estoril/Black M3

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  3. #428
    Join Date
    Oct 2015
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    Richmond, VA
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    509
    My Cars
    99 M3 Coupe, 99 Carrera
    Went to Katie's Cars and Coffee this morning. Saw another black E36 M3 heading the other way, sorry I missed you if you are on here. Also the top gurney flap came off because it contacted my bike carrier sorry Brett I promise to put it back on soon <3

    Last edited by sirhodjibob; 09-24-2022 at 10:40 AM.

  4. #429
    Join Date
    Oct 2015
    Location
    Richmond, VA
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    My Cars
    99 M3 Coupe, 99 Carrera
    Brought the car to RevTech in Sterling to get a baseline dyno graph before installing all the modifications I've been hoarding. Great group of guys and one of the shop owners has an S50 swapped 318ti.

    They use a Mustang dyno which can by stingy but I still can't help but feel a little disappointed. The car put down 181hp/199tq and the graph got a bit rough above 5300RPM. The dyno operater had a couple theories, including the car maybe just not liking the dyno, but it was in his words consistent with what other E36 M3s have put down on the same dyno. The plugs have about 15k miles on them, pretty fresh coil packs, and had a full tank of Shell 93. Vanos and all engine sensors except coolant temp are untouched (as far as I know). Tried 1 pull in 5th gear before settling on 4th.

    Nevertheless, a baseline is what I am after, so it will be interesting see how much of an improvement the upcoming maintenance and modifications will make.





    Got to love the induction noise from the Dinan intake:

    Last edited by sirhodjibob; 09-29-2022 at 02:35 PM.

  5. #430
    Join Date
    Oct 2005
    Location
    Tracy, CA
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    932
    My Cars
    e46 325XI, e36 M3
    Any idea what the shop owners s50 is making? Should be similar output as yours if anything

  6. #431
    Join Date
    Oct 2015
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    Richmond, VA
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    My Cars
    99 M3 Coupe, 99 Carrera
    220whp...but has bottom end work (not sure what specifically)

  7. #432
    Join Date
    Jun 2009
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    Earth
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    My Cars
    E34 M5, E36 M3, E90 M3
    Hm, that seems low. We had my stroker S52 E36 on a Mustang Dyno last year and it put down 297rwhp.. Maybe the correction method or how tight they strap the car makes a large difference?

    At least you have a baseline. I'm curious to see how your car does with a proper tune.

  8. #433
    Join Date
    Oct 2015
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    Richmond, VA
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    99 M3 Coupe, 99 Carrera
    Ordered a compression test kit...better safe than sorry

  9. #434
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    Oct 2015
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    99 M3 Coupe, 99 Carrera
    Cylinder 1 - 150
    Cylinder 2 - 148
    Cylinder 3 - 150
    Cylinder 4 - 150
    Cylinder 5 - 145
    Cylinder 6 - 150

  10. #435
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    E34 M5, E36 M3, E90 M3
    Was the test performed cold or hot?
    That looks very consistent throughout (which is a great sign)

  11. #436
    Join Date
    Oct 2003
    Location
    New Jersey
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    348
    My Cars
    E36 M3 / 991.2 911
    Per the service manual:

    Compression Pressure
    • Minimum - 10-11bar (142-156psi)
    • Maximum difference between cylinders - 0.5bar (7 psi)


    All the numbers look consistent so I would say you are in good shape.

  12. #437
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    Oct 2015
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    99 M3 Coupe, 99 Carrera
    Test was done warm, 8 full cranks on each one...Agreed, a good sign and the plugs looked good as well. As it should be though, the car doesn't smoke, runs smoothly, and only burns a quart or so between oil changes...but good to verify after that dyno test and before pulling the head off and throwing a bunch of new parts at it.

  13. #438
    Join Date
    Oct 2015
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    99 M3 Coupe, 99 Carrera
    No going back now. Should be dropping off the head at Tyson's Machine Shop in Sterling on Wednesday to get refinished. Any tips on cleaning the top of the pistons?



    Will be removing the cams before dropping off:



    Next part will be pulling the timing cover off to replace the guides and main chain. Thinking I'll get the cover, oil filter housing, and a few other bits vapor honed will they are out.

  14. #439
    Join Date
    Oct 2003
    Location
    New Jersey
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    E36 M3 / 991.2 911
    Quote Originally Posted by sirhodjibob View Post
    No going back now. Should be dropping off the head at Tyson's Machine Shop in Sterling on Wednesday to get refinished. Any tips on cleaning the top of the pistons?


    Next part will be pulling the timing cover off to replace the guides and main chain. Thinking I'll get the cover, oil filter housing, and a few other bits vapor honed will they are out.
    Good luck! This scope of work is likely in my future so I look forward to seeing how it goes. For the pistons, a good solvent like diesel fuel and a scotch brite pad should do the job. Could substitute with gas, mineral spirits, or perhaps wd-40. As always, less is more.

  15. #440
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    Oct 2015
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    Richmond, VA
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    99 M3 Coupe, 99 Carrera
    Your thread is motivating me to get this done. Once the head is back on I will be dropping the front subframe and oil pan too. Then hopefully done for a long long time.

    Edit: nvm forgot I still have to do the interior LOL

  16. #441
    Join Date
    Jan 2006
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    WD 40 and plastic pry tool set from Harbor Freight. Use of a stainless steel wire brush also helps too. Don't worry too much about the shit that will come off down the sides. You can blow it out with compressed air and then rotate the crank and wipe off the cyl walls with the piston on the down stroke. I finish mine off with an Adam's micro polisher and compound.

    Complete album here: https://ibb.co/album/pj3MyG

    Maybe this will help




















    Last edited by Braymond141; 10-31-2022 at 02:33 PM.

  17. #442
    Join Date
    Jul 2003
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    NoVA
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    1999 M3
    ^^^ Wowowowow!

  18. #443
    Join Date
    Jan 2010
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    Marietta, GA
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    95 M3, 87 535is
    Please be mindful of the valves that are open with the camshaft still installed.

  19. #444
    Join Date
    Oct 2003
    Location
    New Jersey
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    E36 M3 / 991.2 911
    Quote Originally Posted by Braymond141 View Post
    WD 40 and plastic pry tool set from Harbor Freight. Use of a stainless steel wire brush also helps too. Don't worry too much about the shit that will come off down the sides. You can blow it out with compressed air and then rotate the crank and wipe off the cyl walls with the piston on the down stroke. I finish mine off with an Adam's micro polisher and compound.

    Complete album here: https://ibb.co/album/pj3MyG

    Maybe this will help
    OK - I may be just a tad envious after looking at all that.

  20. #445
    Join Date
    Oct 2015
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    Richmond, VA
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    99 M3 Coupe, 99 Carrera
    I mean that car is impressive but I was most impressed seeing the engine in situ with the head off and the front subframe missing...was confused till I saw the rest of the album

    Quote Originally Posted by jayjaya29 View Post
    Please be mindful of the valves that are open with the camshaft still installed.
    Not obvious in the picture but the ends of the head are sitting on top of some extra QuickJack blocks so the valves aren't touching the ground (though they will be getting replaced)

  21. #446
    Join Date
    Jul 2011
    Location
    Austin, TX
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    2,180
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    S54 E36 M3, E32 740il
    Quote Originally Posted by jaysonx View Post
    OK - I may be just a tad envious after looking at all that.
    It's a shame to put it all back together - that's amazingly clean.

    Brett, how does a motor drive after it's had that done to it? I mean, I AM curious what the inevitable upgrades add, but I wouldn't expect cleaning alone to add much from a power perspective. But I'd expect it to feel - and maybe sound - different after having that done to it.

  22. #447
    Join Date
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    There’s no real butt dyno difference. You are effectively restoring stock like compression (less wear leakages) and cylinder fill though… for whatever that is worth. I mainly do it just because it offers me satisfaction.

  23. #448
    Join Date
    Oct 2016
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    Austria
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    e36 323i, M3 3.2
    Has this head been checked for cracks, and if yes what method did you use?

  24. #449
    Join Date
    Oct 2016
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    Austria
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    e36 323i, M3 3.2
    Looks like cracks cyl 3 spark plug hole to rear intake valve seat
    Last edited by samy01; 11-04-2022 at 12:16 AM.

  25. #450
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    Oct 2005
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    Tracy, CA
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    e46 325XI, e36 M3
    Quote Originally Posted by Braymond141 View Post
    There’s no real butt dyno difference. You are effectively restoring stock like compression (less wear leakages) and cylinder fill though… for whatever that is worth. I mainly do it just because it offers me satisfaction.
    in your experience rebuilding USs50/s52, was there noticeable wear to compression related components as opposed to for example an the euro motors or even s54 of similar mileage?

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