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2.8L M20 9.8:1 stroker build: my 323i reincarnated

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    Happened to have a DA polisher lying around so I thought I'd try my hand in some paint correction.

    Washed, clayed, took before pictures, medium cut 6" foam pad + Harbor freight DA + Meguires 205, then wax.

    Results



    Hood before



    Hood after



    It looks even better in person, super deep and shiny. I dropped it off at the shop right after, not sure what they'll think lol. Some fine quality turd polishing
    '86 Burgundrot 325 2.8 stroker.

    Build thread

    Other cars:
    2000 Porsche Boxster
    2006 Subaru Outback XT 5MT
    1972 Porsche 914

    Comment


      the base color is beautiful
      JP
      WTB: Z3 1.9 lever, plastic bumpers, 19# injectors, Anthracite Cloth Sport Seats


      Current
      88 325 super eta
      00 528i/5 (daily)
      02 530iA sport

      Former
      04 525iA sport
      87 325is
      91 325i
      97 528i

      Comment


        Originally posted by AC_Schnitzel View Post
        the base color is beautiful
        totally agree.

        I want to see this thing with tags and a dyno!! Im waiting to start buying and building
        Simon
        Current Car:
        -2017 i3 REx, 21st Century E30
        -1975 Alfa Romeo Giulia Nuova Super 1300, the never-ending name & project



        Make R3V Great Again -2020

        Comment


          Originally posted by 2mAn View Post
          totally agree.

          I want to see this thing with tags and a dyno!! Im waiting to start buying and building
          My car was at the shop- it's done now! I was getting the AFM readjusted but also getting the transmission dowels put in so my starter will be better aligned, it was noisy before, now it's nice and quiet.

          Apparently I had set it too rich, so the oxygen sensor was overcompensating and leaning it out a ton. Now everything is good, and apparently pulls waay harder above 3k. Am super excited to check it out after work! I might just take it straight to the smog place after.
          '86 Burgundrot 325 2.8 stroker.

          Build thread

          Other cars:
          2000 Porsche Boxster
          2006 Subaru Outback XT 5MT
          1972 Porsche 914

          Comment


            Originally posted by betz View Post
            My car was at the shop- it's done now! I was getting the AFM readjusted but also getting the transmission dowels put in so my starter will be better aligned, it was noisy before, now it's nice and quiet.

            Apparently I had set it too rich, so the oxygen sensor was overcompensating and leaning it out a ton. Now everything is good, and apparently pulls waay harder above 3k. Am super excited to check it out after work! I might just take it straight to the smog place after.
            Make sure you warm up the cats by... spirited.... driving
            Simon
            Current Car:
            -2017 i3 REx, 21st Century E30
            -1975 Alfa Romeo Giulia Nuova Super 1300, the never-ending name & project



            Make R3V Great Again -2020

            Comment


              Originally posted by 2mAn View Post
              Make sure you warm up the cats by... spirited.... driving
              Yes... to warm up the cat...
              '86 Burgundrot 325 2.8 stroker.

              Build thread

              Other cars:
              2000 Porsche Boxster
              2006 Subaru Outback XT 5MT
              1972 Porsche 914

              Comment


                Failed again... Damn. This time it passed the 15mph but failed the 25 mph even worse.

                Going to try plugging in the stock ECU and take it from there.

                '86 Burgundrot 325 2.8 stroker.

                Build thread

                Other cars:
                2000 Porsche Boxster
                2006 Subaru Outback XT 5MT
                1972 Porsche 914

                Comment


                  Originally posted by betz View Post
                  Failed again... Damn. This time it passed the 15mph but failed the 25 mph even worse.

                  Going to try plugging in the stock ECU and take it from there.

                  Ive heard that this is a good reason to go with the Miller MAF setups because you can have a tune specifically for smog and another for performance. Of course its a lot of time on the dyno so its not a cheap solution and then you have to hope that the smog guy doesnt notice that its a MAF conversion
                  Simon
                  Current Car:
                  -2017 i3 REx, 21st Century E30
                  -1975 Alfa Romeo Giulia Nuova Super 1300, the never-ending name & project



                  Make R3V Great Again -2020

                  Comment


                    UHHH another fail. I'm so freaking close dammit! Below's the results of the three tests

                    It seems a big part of the failed smog checks was that my temp gauge has been going to about 3/4 pretty consistently even when driven fairly normally. I replaced both the thermostat sensors and now the needle stays dead center.

                    After fixing that, I first I tried putting in the stock ECU (spare 179 ECU w/ E30 chip). It was shaking a ton at idle and super lean at the stock setting. Putting the AFM wheel back at the setting the shop had set it and it was fine. I changed out my AFM for a spare that hasn't been tampered with. Started up the car and it just dies immediately. Elbow for the ICV popped out changing the AFM - no big deal, but that could be the source of a vacuum leak. Pop it back in and it runs totally fine, maybe a little bit of shudder at idle that goes away given any gas. Surprised since the seemingly stock setting of the old AFM it was shuddering like a mofo. Drive it around and it's very slow but I have experienced this before and it's just the ECU doing its learning thing. After driving it a bit it seems perfect. A bit slower than with the Sssquid tune, but that's what I think I would want for smog.





                    Way I see it, I have three options-
                    1- Put the ECU with the tune back in, since it will probably deliver more fuel. Although, it will have advanced ignition timing and that could push it over the edge. Will probably do this regardless.
                    2- Let the shop play with the AFM again, possibly messing up the AFM again but possibly richening it up a bit to pass smog.
                    3- Use the stock ECU and up the fuel pressure, either with the bavauto or the 944 regulators. Or an in-line screw that some Mercedes have for adjustment, if I can find one. This way the timing is still retarded a bit but there's more fuel at all RPMs.

                    If anyone else has any other ideas, I'm all ears.
                    '86 Burgundrot 325 2.8 stroker.

                    Build thread

                    Other cars:
                    2000 Porsche Boxster
                    2006 Subaru Outback XT 5MT
                    1972 Porsche 914

                    Comment


                      Custom burnt chip tuned on dyno or Ms pnp....
                      89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                      new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                      Comment


                        Originally posted by digger View Post
                        Custom burnt chip tuned on dyno or Ms pnp....
                        No idea where I'd find someone who does custom burnt chips on dyno in California.

                        I have been considering the MS PNP. Dear Santa...
                        '86 Burgundrot 325 2.8 stroker.

                        Build thread

                        Other cars:
                        2000 Porsche Boxster
                        2006 Subaru Outback XT 5MT
                        1972 Porsche 914

                        Comment


                          Headers in (finally)! Ceramic coating took forever.

                          I'm going with S52 injectors to rule that out and hopefully have more than enough flow. At this point running too rich would be a welcome sight.

                          Going on snowboarding trip, so probably won't see any more progress until next year.



                          Beer for scale
                          '86 Burgundrot 325 2.8 stroker.

                          Build thread

                          Other cars:
                          2000 Porsche Boxster
                          2006 Subaru Outback XT 5MT
                          1972 Porsche 914

                          Comment


                            Hoping some spark plug whisperers can chime in here.

                            Here are what my 6 spark plugs look like

                            Cylinder 1 looks different from the others. It appears to be either rich or oil contaminated. Not too sure, nor do I know what it means for me...
                            '86 Burgundrot 325 2.8 stroker.

                            Build thread

                            Other cars:
                            2000 Porsche Boxster
                            2006 Subaru Outback XT 5MT
                            1972 Porsche 914

                            Comment


                              Originally posted by betz View Post
                              It seems a big part of the failed smog checks was that my temp gauge has been going to about 3/4 pretty consistently even when driven fairly normally.
                              Considering excess NOx is caused by the combustion temp being too hot, that's a good place to start :). I had one hell of a time bleeding the cooling system on a buddies early style cooling system last weekend. The car would start to creep to around 3/4 only at idle after a few minutes. After bleeding the car over the course of a few days, letting it sit over night, try again the next day, ect. it seems I finally got all the air out of the system (fingers crossed anyways, seems to be OK now). I've bled at least 10x e30 cooling systems over the years but this was the first early style cooling system I've dealt with. Not sure if I just got a stubborn one or if early cars are just a bit trickier, but if the temp continues to climb even after replacing those temp sensors you mentioned, its just a thought. Awesome build man keep it up.
                              Last edited by KIRIEIW; 01-10-2018, 12:19 AM.


                              1992 M tech 2 Convertible - S50 Swap
                              1992 e34 Touring- S50 Swap
                              1992 325i-S50 Swap (SOLD)

                              1995 e36 M3 Mugello Red - S50 (SOLD)
                              1991 325i Convertible Laguna Green (SOLD)
                              1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
                              1988 325i Convertible Alpine White (SOLD)
                              1991
                              Brilliantrot Convertible 80k Miles (SOLD)
                              1992 325i Convertible Schwarz (SOLD)
                              1992 318i Convertible Project-Finished (SOLD)

                              Comment


                                Thankful no emissions testing required for my E30 here in Illinois. You West Coast guys must get awfully frustrated trying to get a passing grade.

                                Thanks for a thread that's making me eager to start my 2.8 stroker build this Spring.

                                Comment

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