Rebuild

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  • NKRoberts
    E30 Modder
    • Aug 2010
    • 909

    #1

    Rebuild

    I am looking into rebuilding my m20b25. I think that when brought back to stock spec that it makes enough power. I am curious what others do for a little more power. Just wanted to check my options.
    I am still going to drive this 3-4 a week so keep that in mind. Thanks

    Or if you can point me in the write direction to some info that would be great.

    Vinyl Lettering
  • nando
    Moderator
    • Nov 2003
    • 34827

    #2
    for a stock rebuild check out what the specE30 guys are doing.
    Build thread

    Bimmerlabs

    Comment

    • eugeman
      Grease Monkey
      • Sep 2007
      • 306

      #3
      Presumably you want more than what a E.A.T. Mark D. chip can offer? The big question is if you have emission testing where you live, it makes a difference how you build a motor + your budget.

      Comment

      • NKRoberts
        E30 Modder
        • Aug 2010
        • 909

        #4
        Well i just found a real nice motor with about 50k miles. So i think I am going to build that up a bit. I was thinking about a cam and some headwork. Any recommendations on a cam? I don't want to go crazy. Is it possible to get a performance cam for under $300?

        Vinyl Lettering

        Comment

        • Anthony88ac
          Untrustworthy, Buyer beware!
          • Jan 2009
          • 251

          #5
          Ireland sells you $190 reground just send your core in.

          Comment

          • nando
            Moderator
            • Nov 2003
            • 34827

            #6
            add another $100 for oversized eccentrics.

            screw regrinds, either just buy a new stock cam, or save for a catcams or schrick ~272.
            Build thread

            Bimmerlabs

            Comment

            • NKRoberts
              E30 Modder
              • Aug 2010
              • 909

              #7
              Originally posted by nando
              add another $100 for oversized eccentrics.

              screw regrinds, either just buy a new stock cam, or save for a catcams or schrick ~272.
              Do you know about how much those cost?

              Vinyl Lettering

              Comment

              • straight6pwr
                No R3VLimiter
                • Sep 2004
                • 3450

                #8
                Originally posted by nkroberts
                do you know about how much those cost?
                ~475

                Comment

                • NKRoberts
                  E30 Modder
                  • Aug 2010
                  • 909

                  #9
                  Originally posted by straight6pwr
                  ~475
                  thanks

                  Vinyl Lettering

                  Comment

                  • e30Squid
                    E30 Addict
                    • May 2008
                    • 471

                    #10
                    Check out VAC motorsports...they have pretty good prices on the schrick cam.

                    Duration: 272° / 272°; 284° / 272°; 288° / 288°; 304° / 304°.

                    Comment

                    • Jon325i
                      R3V OG
                      • Oct 2003
                      • 6934

                      #11
                      Another area to consider is the intake....stock is quite restrictive. Miller Performance has something to address it. Beauty of this option is everything is a simple bolt-on process.

                      Rides...
                      1991 325i - sold :(
                      2004 2WD Frontier King Cab

                      RIP #17 Jules Bianchi

                      Comment

                      • 619E30
                        E30 Mastermind
                        • Feb 2010
                        • 1753

                        #12
                        m50b25 swap...
                        Originally posted by audiquattrot
                        bimmers b4 b*tches....remember that.
                        1990 Alpinweiss 325i - secret 500whp build
                        2000 Audi S4 B5 Laser Red
                        1990 Nissan 240sx - Drift Missile
                        2006 CBR600RR

                        Comment

                        • Sagaris
                          R3VLimited
                          • Sep 2009
                          • 2243

                          #13
                          Originally posted by Jon325i
                          Another area to consider is the intake....stock is quite restrictive. Miller Performance has something to address it. Beauty of this option is everything is a simple bolt-on process.

                          http://millerperformancecars.com/ind...mart&Itemid=30
                          I'd really have to take a ride in someones car with the MAF conversion or go against them in a drag race. I am still not convinced that there is an actual gain to be had from the MAF itself (not the software and not the percieved increase due to better response).

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