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  4. M52 or S52 in an E30

M52 or S52 in an E30

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  • B
    B
    Boris3
    wrote on last edited by
    #2

    Which one are you less likely to blow up? I think in your case "abuse potential" needs to be the deciding factor.

    1990 325i racecar (ITS, former Spec E30); 2004 330i ZHP

    1 Reply Last reply
    0
    • i_love_carsI
      i_love_carsI
      i_love_cars
      wrote on last edited by
      #3

      i had to vote for S52, but I couldn't help myself. If I'm gonna have a modified car, I like taking it to car places and having something more unique that will create conversation with people. I think the S52 swap ticks that box a lot more than an M52. I tried to be objective about it for your sake based on your situation as you have described it, but honestly if the difference here is $1000 or less, then the S52 is actually the real no-brainer option. It's faster, more unique, and will make the car worth significantly more than the difference in financial cost between the 2 motors. 

      If money is an issue I will help you buy the motor and you can pay me back. 

      It is faster and cheaper to do an M52 (faster because you can source one locally right now and you may need to save money for longer if you want an s52)....but I just think if you are going to do a swap, you should go all the way and do a proper S motor.

      IMG6593.jpg

      2011 E92 M3 6MT ZCP - ESS 625 supercharged
      2007 Z4MR 
      2003 E39 M5
      2002 E46 M3
      2021 X5 40i

      1 Reply Last reply
      0
      • GunMetalGreyG
        GunMetalGreyG
        GunMetalGrey
        wrote on last edited by
        #4

        M52 with M54b30 crank is always an option? 
        Cheap way to get more displacement out of an m52.

        ...

        1 Reply Last reply
        0
        • straight6pwrS
          straight6pwrS
          straight6pwr
          wrote on last edited by
          #5

          you know where i stand.

          https://chicago.craigslist.org/nwc/pts/6113880236.html

          https://chicago.craigslist.org/wcl/cto/6111595461.html

          Dan
          yajsYRL.jpg.e5f350b4dfe961d76ac8b32efce2e1a6.jpg

          1 Reply Last reply
          3
          • HipMFH
            HipMFH
            HipMF
            wrote on last edited by
            #6

            Snap said:

            m20s are like family to me

            turning your back on your family...

            1 Reply Last reply
            2
            • B
              B
              B C
              wrote on last edited by
              #7

              My family has become dysfunctional. It was corrupted by boost addiction.

              1 Reply Last reply
              3
              • suspencefulS
                suspencefulS
                suspenceful
                wrote on last edited by
                #8

                I know nothing about E30s or their market with non-factory motors in them.

                $1000+ for a measly 20whp is not money well spent in my opinion.

                PS: Put an N54 in it.

                🎬 YouTube channel (60K+ subs): youtube.com/jakespence135
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                1
                • straight6pwrS
                  straight6pwrS
                  straight6pwr
                  wrote on last edited by
                  #9

                  suspenceful said:

                  I know nothing about E30s or their market with non-factory motors in them.

                  $1000+ for a measly 20whp is not money well spent in my opinion.

                  PS: Put an N54 in it.

                  however, his car will be worth at least $1000 more in the end, if not double that. (if that is an important factor to him)

                  Dan
                  yajsYRL.jpg.e5f350b4dfe961d76ac8b32efce2e1a6.jpg

                  1 Reply Last reply
                  0
                  • i_love_carsI
                    i_love_carsI
                    i_love_cars
                    wrote on last edited by
                    #10

                    straight6pwr said:

                    however, his car will be worth at least $1000 more in the end, if not double that. (if that is an important factor to him)

                    exactly. 

                    S52 is the way to go especially if a parts car with engine, harness, and trans can be sourced - they usually don't go for more than $3k which is well worth it. 

                    suspenceful said:

                    I know nothing about E30s or their market with non-factory motors in them.

                    $1000+ for a measly 20whp is not money well spent in my opinion.

                    PS: Put an N54 in it.

                    $1000+ for 20 whp is not money well spent to you because you're used to turbo cars where 75 hp can be gained with a tune =P  In the world of 200hp NA motors, 20 whp is a lot especially across the entire power band.

                    IMG6593.jpg

                    2011 E92 M3 6MT ZCP - ESS 625 supercharged
                    2007 Z4MR 
                    2003 E39 M5
                    2002 E46 M3
                    2021 X5 40i

                    1 Reply Last reply
                    0
                    • RobZRR
                      RobZRR
                      RobZR
                      wrote on last edited by
                      #11

                      No replacement for displacement!!!!

                      Any S-motor is an upgrade in the eyes of an E30 buyer. 

                      For FI the M52 is a better choice leaving $ in the budget for a spare.

                      1 Reply Last reply
                      0
                      • KaiserRollsK
                        KaiserRollsK
                        KaiserRolls
                        wrote on last edited by
                        #12

                        I vote s5x, or at least an m52 with M power valve covers

                        1 Reply Last reply
                        1
                        • jc43089J
                          jc43089J
                          jc43089
                          wrote on last edited by
                          #13

                          I have an M cover for you!!  I couldn't be "that guy" and leave it on my m50.

                          2/94 325i Sedan, Arctic Gray: UUC LTW FW, EVO 3 and DSSR, +.020 Maxsil pistons, ASC delete, Eibach shocks/springs, 16" contour reps 238k
                          3/93 325i Coupe, Schwarz 2, Sketchy stance action, ebay turbo, 300k
                          '89 325i Vert, Alpine White: 5spd swapped, sold.

                          '04 Toyota Sienna: 24V to 24V swap in progress

                          '05 Volvo V70R, 6spd.  200k
                          '85 Toyota LandCruiser: Lifted, gas hog. 205k
                          '99 Nissan Maxima: 5spd, Rusty but trusty winter beater. 252k RIP.

                          1 Reply Last reply
                          1
                          • B
                            B
                            B C
                            wrote on last edited by
                            #14

                            Makes me wonder how many M52 cars with S52 cams have been sold as S52 cars and how many S52 engines have been sold with M52 cams. Are there any markings on the block?'id thin there would have to be a stamp

                            1 Reply Last reply
                            0
                            • KaiserRollsK
                              KaiserRollsK
                              KaiserRolls
                              wrote on last edited by
                              #15

                              Snap said:

                              Makes me wonder how many M52 cars with S52 cams have been sold as S52 cars and how many S52 engines have been sold with M52 cams. Are there any markings on the block?'id thin there would have to be a stamp

                              Yes and no. Heads I believe are all casted the same (?)

                              Block should have markings

                              If not the vin is a give away "WBSxxxx" is ///M and "WBAxxxx" is non ///M iirc

                              1 Reply Last reply
                              0
                              • jc43089J
                                jc43089J
                                jc43089
                                wrote on last edited by
                                #16

                                Sticker on the back of the head. The same castings for both heads.

                                Sent from my 831C using Tapatalk

                                2/94 325i Sedan, Arctic Gray: UUC LTW FW, EVO 3 and DSSR, +.020 Maxsil pistons, ASC delete, Eibach shocks/springs, 16" contour reps 238k
                                3/93 325i Coupe, Schwarz 2, Sketchy stance action, ebay turbo, 300k
                                '89 325i Vert, Alpine White: 5spd swapped, sold.

                                '04 Toyota Sienna: 24V to 24V swap in progress

                                '05 Volvo V70R, 6spd.  200k
                                '85 Toyota LandCruiser: Lifted, gas hog. 205k
                                '99 Nissan Maxima: 5spd, Rusty but trusty winter beater. 252k RIP.

                                1 Reply Last reply
                                0
                                • KaiserRollsK
                                  KaiserRollsK
                                  KaiserRolls
                                  wrote on last edited by
                                  #17

                                  jc43089 said:

                                  Sticker on the back of the head. The same castings for both heads.

                                  Sent from my 831C using Tapatalk

                                  This, my tag came off when I had the head hot tanked

                                  1 Reply Last reply
                                  0
                                  • D
                                    D
                                    Daggerty
                                    wrote on last edited by
                                    #18

                                    KaiserRolls said:

                                    This, my tag came off when I had the head hot tanked

                                    So it's a S motor then

                                    1 Reply Last reply
                                    0
                                    • KaiserRollsK
                                      KaiserRollsK
                                      KaiserRolls
                                      wrote on last edited by
                                      #19

                                      Daggerty said:

                                      KaiserRolls said:

                                      This, my tag came off when I had the head hot tanked

                                      So it's a S motor then

                                      Yes, mines an s50

                                      1 Reply Last reply
                                      0
                                      • EarlE
                                        EarlE
                                        Earl
                                        wrote on last edited by
                                        #20

                                        Could buy this and then sell the chassis: https://minneapolis.craigslist.org/hnp/cto/6129059575.html

                                        museum sig 2earl.jpg

                                        1 Reply Last reply
                                        0
                                        • Bassboy3313B
                                          Bassboy3313B
                                          Bassboy3313
                                          wrote on last edited by
                                          #21

                                          "M3 engine" in the title and yet STILL no engine bay pics. People confuse the shit out of me

                                          CHECK OUT >>> RAGE DRIFT DESIGNS <<< FOR DECALS AND MORE!

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                                          0

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