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  • #1

    Im back on the road.....

    Kinda.... I got the lower end together and the motor back in the car and running. The machine shop saved the crank by using basicly a custom main bearing with a .040 over thrust surface. I was happy about that.

    The car runs like S**!!! though. Every time I disconnect the battery, I gotta go through this. The computer has to relearn. It spits and sputters, backfires on decel, etc.. Its very frustrating. I now think that its because the calibration is so far out of whack. I am having Ion with MadZ28 do an OBDI program for the stroker setup. Hopefully, this corrects the problem.
    96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
    11.6 @ 123mph (1.6 60' - getting there )
    Tags: None
  • #2
    Glad you could fix it.
    97 Trans Am A4 more or less stock (Mods: WS6 Ram Air with Fernco & K&N, 12 disc CD changer, power antenna, SLP Fan Switch, LS1 Aluminum DS, Borla Cat back, McCord power plate, Spohn tower brace, Sirius, HID fog lights)


    1and1 Web Hosting

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    • #3
      Nice now when do i get to see that thing out on the track ?
      -Nick-
      95 A4 Z28

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      • #4
        Well, Im getting the new PCM within a day or two. I should break in the new bearing for a few hundred miles, so probably the begining the June.
        96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
        11.6 @ 123mph (1.6 60' - getting there )

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        • #5
          Re: Im back on the road.....

          Originally posted by N20LT4Bird
          Kinda.... I got the lower end together and the motor back in the car and running. The machine shop saved the crank by using basicly a custom main bearing with a .040 over thrust surface. I was happy about that.

          The car runs like S**!!! though. Every time I disconnect the battery, I gotta go through this. The computer has to relearn. It spits and sputters, backfires on decel, etc.. Its very frustrating. I now think that its because the calibration is so far out of whack. I am having Ion with MadZ28 do an OBDI program for the stroker setup. Hopefully, this corrects the problem.
          Glad to hear you got everything back together Sean. Man I wish my crank could be finished that fast!

          I've been over 2 months now for my forging to be ready at Callies!

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          • #6


            Don't know about the .040 bearing though. Not to make you paranoid, but it may be prone to wiping the bearing again.

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            • #7
              The bearing itself is not .040, just the thrust surface. The rest of the crank was mint. The machine shop that did it is very reptuable and builds many race engines. He new it was a nice balanced stroker crank that would be severely abused. He didnt seem to have a problem with it.

              But thanks for making me paranoid
              96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
              11.6 @ 123mph (1.6 60' - getting there )

              Comment

              • #8
                Re: Re: Im back on the road.....

                Originally posted by fastTA
                Glad to hear you got everything back together Sean. Man I wish my crank could be finished that fast!

                I've been over 2 months now for my forging to be ready at Callies!
                Yes, these guys are good. I told them my scenario and that I needed it ASAP and they took care of me. Charged me, but took care of me

                You must be getting a custom forging to be 2 months???
                96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
                11.6 @ 123mph (1.6 60' - getting there )

                Comment

                • #9
                  Originally posted by N20LT4Bird
                  The bearing itself is not .040, just the thrust surface. ...
                  I'm not sure I know what that means.
                  Rob B 95Z A4 Tech Page (Part numbers / locations, how to's, schematics, DTC's...) Home Page - shbox.com

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                  • #10
                    could it be

                    maybe he is talking aobut 40 over thrust bearings? I have seen oversized ones...just making it sound strange by adding the main bearing comment...
                    NBM '02 Z, SLP Lid, Corsa Cat-Back
                    (SOLD 07/03/2004)

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                    • #11
                      Originally posted by Rob B (shoebox)
                      I'm not sure I know what that means.
                      OK, the rear main bearing controls the endplay of the crank. The surface that the crank hits to keep it from walking back and forth is the thrust surface of the bearing. The thrust surface on the bearing was wiped out and grooved the crank, not on the journal itself, but on the thrust surface. I had about an 1/8 inch of endplay (as opposed to .006"). This surface was machined flat and an oversized thrust bearing was used.
                      96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
                      11.6 @ 123mph (1.6 60' - getting there )

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                      • #12
                        sorry but i heard crank and walk in the same sentence and coudlnt help but think DSM ....
                        -Nick-
                        95 A4 Z28

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                        • #13
                          Originally posted by N20LT4Bird
                          OK, the rear main bearing controls the endplay of the crank. The surface that the crank hits to keep it from walking back and forth is the thrust surface of the bearing. The thrust surface on the bearing was wiped out and grooved the crank, not on the journal itself, but on the thrust surface. I had about an 1/8 inch of endplay (as opposed to .006"). This surface was machined flat and an oversized thrust bearing was used.
                          Doh, ok, for some reason I was not thinking of the rear main. I am familiar with the thrust surfaces and oversize bearings.
                          Rob B 95Z A4 Tech Page (Part numbers / locations, how to's, schematics, DTC's...) Home Page - shbox.com

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                          • #14
                            what kinda power gains did you notice from the 350 to the 383? I am currious because I have the same project in the garage. but I am totally building the engine from top to bottom with after market parts, from the carb to the heads, to the fuel pump, etc. Anyways.....better HP, or just more torque?
                            82 camaro x2:
                            82 z28 w/ 305 (for now) 4 speed saginaw
                            82 berrlinetta with 350 .060 over...3 speed auto

                            The Z28 is back under the knife, after the transmission, now its the entire engine....will post pics when all finished.

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                            • #15
                              Re: Re: Re: Im back on the road.....

                              Originally posted by N20LT4Bird
                              Yes, these guys are good. I told them my scenario and that I needed it ASAP and they took care of me. Charged me, but took care of me

                              You must be getting a custom forging to be 2 months???
                              Yeah, it is going to be cross-drilled, and knife-edged. They do all of it in one process. It is just taking forever!

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