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Block Girdles and Sleeving

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Block Girdles and Sleeving

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    Block Girdles and Sleeving

    I dont really see too many tech posts floating aorund here, so im gonna start contributing some........Lately we have been selling quite a few block girdles and we sell what i feel the to be the nicest one available, the ERL girdle. Here's a tech email i recieved from them, and to be honest alot can be learned from this. We also sell quite a few of their sleeved blocks, and this also gives you an idea of why an Align Hone is so important regardless of who sleeves your block. Even if its not goint to be sleeved its a great thing to check(main cap alignment) as many blocks from the factory will twist as time goes on. This is something that could be the difference in your rebuild lasting 6000 miles instead of 60,000. Premature bearing failure and broken oil pumps can easily be caused by mis-aligned mains.

    "The Billet CNC ERL Performance Girdle will fit under a GSR (B18c) factory
    pan or the Moroso aftermarket. Use the GSR oil pick-up. This eliminates the
    header, ground, etc. clearance issues by lowering the whole pan with a
    plate. The girdle is a truss design (ie. bridge, ceiling truss,etc.) which
    is many times the strength of a flat plate design. Just as you box a frame
    to increase it's strength, The girdle boxes the main bearing caps to
    strengthen and reduce bearing movement (Honda did this on the newer F23 and
    went to a full split case on the K and F20 motors). We have discovered by
    inspecting hundreds of blocks and wear patterns on the bearings that they
    shift as they stress relieve (and if you notice Honda opened up the #3
    clearance over time). Another troubling discovery is finding stress cracks
    particulary on the #1 journal on previosly boosted motors. The cast in
    sleeve is a major structural member in the block design and when you remove
    them, the block is weakened. This is why we always align hone every block we
    do. Benefits; It reduces the movement of the main journals and elimenates
    cap walk. Cap walk occurs when you over power the retaining ability of the
    main bolts (and more importantly the aluminum threads)and the cap is forced
    off it seat(the block) by high cylinder pressures, clutches,etc.. The girdle
    with its truss design uses the surrounding main bolts to aid the bolts of
    the cylinder under pressure (one fires at a time). Another benefit of
    maintaining the main bearing alignment is that as the crank rotates the oil
    feed holes in the mains for the rods maintains an even flow, rather than the
    bearing working as a wiper at the area of small clearance caused by
    mis-alignment. This gives more uniform oil flow to the rods. It requires a
    special ARP stud kit and instructions with the proper proceedure for seating
    studs in an aluminum block. It also comes with 10 hollow dowels for the
    girdle. ALWAYS ALIGN HONE AFTER INSTALLATION OF ANY GIRDLE OR EVEN GOING TO
    MAIN STUDS!!
    "

    If anyone has any questions, id be more than happy to answer em. Remember this is a good thing for all blocks seeing as how it ties all 5 mains together, not 3 like the gsr and other aftermarket girldes.

    #2
    Oh yeah, the pic....

    Comment


      #3
      thanks for the info. Is there some webbing or something on the underside of the girdle? because from the outside it does just look like a plate.

      Comment


        #4
        This is definately some good info. I would also be interested to hear how it is different/better than the ones from z10, and Function7. I am sure there are others out there to compare, and I mean no disrespect to the ERL Performance Girdle. A side-by-side would be great comparing weight, strength, design, clearance, etc, and how they compare in price. Both places below are "Call for price"...... even a ballpark figure would be usefull.

        http://www.z10eng.com/
        http://www.function-7.com/a0-eng.html

        Comment


          #5
          The Z10 unit is avery nice piece and ive seen it in persona few times. A shop that buys parts from us has bout them both and done some testing. It comes down to the fact that the Z10 isnt gonna cut it for a street car. It doesnt allow enough oil to get to the mains, you have to have their dry sump system in oprder to effectively use it. Gonna end up being a 4000.00 setup. Im not thta familiar with the fucntion 7 but it is competitively priced with ERL's. It looks nice, but who knows how much r&d actually went into it....

          Retail is 499.99 for the ERL

          Comment


            #6
            Originally posted by strikeback03
            thanks for the info. Is there some webbing or something on the underside of the girdle? because from the outside it does just look like a plate.
            Your welcome, Im not certain about the webbing, but i have 3 coming in this week so ill check and take some better pics...

            Comment


              #7
              cool. and somebody makes a dry sump conversion for the B-series? wow.

              Comment


                #8
                Originally posted by strikeback03
                thanks for the info. Is there some webbing or something on the underside of the girdle? because from the outside it does just look like a plate.
                If you read the post you will notice it is mentioned that it is a truss design.

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                  #9
                  yeah, I saw that, and was wondering what they were referring to. are they saying it forms a truss structure with the main caps, or that the girdle itself is a truss structure?

                  Comment


                    #10
                    i believe its the girdle itself, but ill double check with them..

                    Comment


                      #11
                      Originally posted by strikeback03
                      cool. and somebody makes a dry sump conversion for the B-series? wow.
                      z10 makes them, Moroso, and some others. They are available with some looking. I just ran accross them not looking for it.


                      Originally posted by strikeback03
                      thanks for the info. Is there some webbing or something on the underside of the girdle? because from the outside it does just look like a plate.
                      Also, if you click the links I put in, there are "some" pics on the sites that might help answer some questions.

                      Comment

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