Announcement

Collapse
No announcement yet.

How can I externally id an engine?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • How can I externally id an engine?

    I have a '00 LIM and I have a 3400 UIM how can I tell what the engine is? I was told that it was a 3100 and it was removed because it had piston slap. The dealer bought a complete engine to replace it. It was in Anchorage AK and the emissions laws won't let you swap a larger displacement engine in (can't put a 3400 in place of a 3100 and drive it in Anchorage). can I identify it by a block #? what are the identifying caracteristics?
    White '89 Beretta GTU with a 3400 under the hood. only a tranzgenic CAI so far!

  • #2
    Look on the side of the block (either tranny side or timing cover side, can't remember) and it will have either a 3.1L or a 3.4L cast into it. That will tell you if its a 3100 or a 3400.
    -Brad-
    89 Mustang : Future 60V6 Power
    sigpic
    Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

    Comment


    • #3
      even if its a 3400 - they shouldnt know the difference if you put a 3100 plenum on? i doubt they would go searching for #'s on a stock looking engine.

      Comment


      • #4
        Originally posted by patgizz
        even if its a 3400 - they shouldnt know the difference if you put a 3100 plenum on? i doubt they would go searching for #'s on a stock looking engine.
        They look at the block # and verify it is the correct displacement for the car/ year. I had a buddy with a '79 3/4 T Chevy, it originally had a 350 in it and still did BUT the new engine was a LD emissions engine and it came with a HD emissions engine so they would NOT pass it for emissions. Externally they were identical looking.
        White '89 Beretta GTU with a 3400 under the hood. only a tranzgenic CAI so far!

        Comment


        • #5
          Originally posted by bszopi
          Look on the side of the block (either tranny side or timing cover side, can't remember) and it will have either a 3.1L or a 3.4L cast into it. That will tell you if its a 3100 or a 3400.
          is this on the front side or rear side? with the engine in the car.
          White '89 Beretta GTU with a 3400 under the hood. only a tranzgenic CAI so far!

          Comment


          • #6
            Well, that won't work, since its under the timing cover...

            On the tranny side of the engine, most likely on the firewall side, look for a letter A or B cast into the block (near the head). A will be 3100 and B will be 3400.
            -Brad-
            89 Mustang : Future 60V6 Power
            sigpic
            Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

            Comment


            • #7
              It's a 3400!

              Originally posted by bszopi
              Well, that won't work, since its under the timing cover...

              On the tranny side of the engine, most likely on the firewall side, look for a letter A or B cast into the block (near the head). A will be 3100 and B will be 3400.
              Thanks for the help, I found the B on the engine painted red. I would be happy if it was a 3100 but I still would have probably have put a 3400 in it later, now I got what I wanted and didn't even realize I already had it!

              One inconsistancy though, Another site said that the 3400 timing cover has a boss to install another idler pulley and the cover that was installed on the engine when I got it does not. the cover was still bolted on and they had no reason to take it off so I am pretty sure that it belongs to the engine. does the front cover differ from car to car?
              Last edited by scrappy; 09-17-2006, 10:56 AM.
              White '89 Beretta GTU with a 3400 under the hood. only a tranzgenic CAI so far!

              Comment


              • #8
                Yes, the front covers will vary depending on the application.
                -Brad-
                89 Mustang : Future 60V6 Power
                sigpic
                Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

                Comment


                • #9
                  Ok guys, I know I'm resurrecting an 11 year old thread here, but I happened to be searching the forum, trying to find out how to tell a 3400 from a 3100. Upon reading this post, I realized that the 3100 I have sitting in my garage, which I pulled from my Lumina, has a B stamped on it. I'm also pretty sure that when I swapped in the 3400, I looked to make sure the stamp wasn't the same letter B, and the engine I swapped in had an A stamped on it. Is it possible that you guys have it reversed and the 3100 is the B, and the 3400 is the A, or did I somehow manage to swap in a motor that was really weak, for a downgrade? The original motor was a dog and it is much more powerful since the swap. Only upgrades are ported intake manifolds and a 65mm TB and plenum opening

                  Comment


                  • #10
                    3100 is a B
                    3400 is a A
                    3500 is a C (non vvt Lx9)
                    1999 Olds Alero 2.4 to 3500 swap (running). totaled by a honda
                    1992 lumina 4 door 3500 3spd auto 15.020 @93.5 mph
                    1984 Cavalier type 10 hatch 3100 5spd!!!
                    14.96@91.47 in the 1/4
                    9.63@74.36 in the 1/8th
                    14.30 on slicks! scrapped due to rust!

                    Comment


                    • #11
                      PHEW!!! LOL

                      Comment

                      Working...
                      X