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

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    #31
    Doing all this work and not going to a full standalone seems like a waste.
    AWD > RWD

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      #32
      Damn this is motivating me to get going on mine!
      - Greg
      α Team Founding Member
      1984 BMW 325 Henna Rot - Sarah -Uber project
      2011 BMW 335d LeMans Blau - Daily Diesel Torque monster

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        #33
        Burgundrot and euro bumpers? I'm a fan already. And stroker? I'll be watching this build

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          #34
          Originally posted by betz View Post
          the car has passed smog


          Would like to hear more about these plans. Wouldn't running such an aggressive non-stock setup be a surefire way to fail smog? Not trying to sound like a smart ass, generally curious as a California native who wants to build an engine.


          Sent from my iPhone using Tapatalk
          1984 Delphin 318i 2 door

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            #35
            Originally posted by wworm View Post
            Would like to hear more about these plans. Wouldn't running such an aggressive non-stock setup be a surefire way to fail smog? Not trying to sound like a smart ass, generally curious as a California native who wants to build an engine.
            For our cars they basically just need to pass the sniffer test. That is, get the right C02s and 02s and HCs and whatnot. An overly agressive cam is an easy way to fail. But if I've got a good catalytic converter, and a mild cam I'll probably be good for smog. There is some leeway to the allowed limits.

            The timing of the engine will be critical, but as long as everything is dialed in I should be okay.
            '86 Burgundrot 325 2.8 stroker.

            Build thread

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

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              #36
              Still waiting on the valves, package was delayed. Meanwhile I bolted on some accessories to the block, nothing too major.
              There's a hole pointing down towards the oil pan on the intake side next to the bitch tube, looks like a plug should go in there. Can't find what went in there in my boxes of stuff though, so idk. Another problem for future me.

              '86 Burgundrot 325 2.8 stroker.

              Build thread

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

              Comment


                #37
                Originally posted by betz View Post
                For our cars they basically just need to pass the sniffer test. That is, get the right C02s and 02s and HCs and whatnot. An overly agressive cam is an easy way to fail. But if I've got a good catalytic converter, and a mild cam I'll probably be good for smog. There is some leeway to the allowed limits.



                The timing of the engine will be critical, but as long as everything is dialed in I should be okay.


                Good to know. Really looking forward to this.


                Sent from my iPhone using Tapatalk
                1984 Delphin 318i 2 door

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                  #38
                  Sounds really similar to what I just finished building. If it helps at all I LOVE mine, really wakes the car up. Excited to see your results!

                  Not running an oil cooler with it?

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                    #39
                    Originally posted by sert57 View Post
                    Sounds really similar to what I just finished building. If it helps at all I LOVE mine, really wakes the car up. Excited to see your results!

                    Not running an oil cooler with it?
                    Fun is the goal :) I'm excited its finally coming together

                    2.9, did you use custom pistons?

                    Also never considered an oil cooler. Should I?
                    '86 Burgundrot 325 2.8 stroker.

                    Build thread

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

                    Comment


                      #40
                      So that mystery hole that sits next to the bitch tube and goes into the oil pan.

                      I may have figured it out. I didn't those mad Germans could come up with anything so clever.

                      It's the dipstick.
                      Last edited by betz; 09-20-2017, 07:13 PM.
                      '86 Burgundrot 325 2.8 stroker.

                      Build thread

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

                      Comment


                        #41
                        2.85 using s50us crank and a thicker MLS HG. oem pistons and eta rods, and a little bit of block grinding...
                        MY CR ended up being 9.7:1, so a really similar setup.
                        I have a bimmerheads 272, IE longtubes, and M52 pink tops, but thats about it for the rest of the mods. mines a solid street motor.

                        Oil cooler wouldn't hurt. I know etas didn't have them but the i models did. I've got one laying around if you're interested.
                        Ive never seen actual numerical data for oil temperatures with and without though, so you may be fine. Also not sure how hard they are to retrofit to an early model.

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                          #42
                          Originally posted by betz View Post

                          Also never considered an oil cooler. Should I?
                          keep an eye on temps so add a gauge if you dont have one. many say the stock one has minimal cooling capacity
                          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

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                            #43
                            Originally posted by digger View Post
                            keep an eye on temps so add a gauge if you dont have one. many say the stock one has minimal cooling capacity
                            Would you recommend one of these to plug in a temperature sender?

                            '86 Burgundrot 325 2.8 stroker.

                            Build thread

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

                            Comment


                              #44
                              Rear main seal


                              Oil pan



                              Sprockets harmonic balancer etc
                              '86 Burgundrot 325 2.8 stroker.

                              Build thread

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

                              Comment


                                #45
                                Graduated to the garage :)

                                '86 Burgundrot 325 2.8 stroker.

                                Build thread

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

                                Comment

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