Announcement

Collapse
No announcement yet.

whats this noise??

Collapse
X
Collapse
Who has read this thread:
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • whats this noise??

    this is with no serpentine belt or ac belt at idle. noise kinda goes away in gear and giving some throttle but still there. doesnt do it cold. some guys are saying flexplate and another is scaring the shit out of me saying thrust bearing. sorry for the shitty video from my android. cant believe how badly it takes videos

    http://www.youtube.com/watch?v=6RxRKGHujgo
    Last edited by Formula Z; August 30th, 2012, 06:56 PM.
    sigpic
    11.84 @ 117 w 1.66 60' (previous na best)

    - - 5.3/4L80e/T7875 - -
    - Huron Speed Turbo Kit -

    1998 Formula

  • #2
    video is private and wont play...
    sigpic
    1992 Chevy Camaro 25th Anniversary-SOLD
    1992 Chevy Camaro 25th Anniversary
    1997 Chevrolet Corvette

    The Original
    Originally posted by meissen
    I actually agree with Darren on everything he said...
    Originally posted by 81DaytonaPaceCar
    Yep, pretty much...not too often I agree 100% with Darren, but there it is...


    Comment


    • #3
      what? ok ill try again

      http://www.youtube.com/watch?v=6RxRKGHujgo
      Last edited by Formula Z; August 30th, 2012, 06:55 PM.
      sigpic
      11.84 @ 117 w 1.66 60' (previous na best)

      - - 5.3/4L80e/T7875 - -
      - Huron Speed Turbo Kit -

      1998 Formula

      Comment


      • #4
        hmm. i have heard that noise a few times. since it has good oil pressure I think is a lifter roller. I have seen this more and more lately. no explanation. I blame it on the lack of zinc in todays oils

        Comment


        • #5
          lifter getting ready to seize up? I'd definitely check them before you could potentially wipe out a lobe

          1998 Camaro Z28 - Bright Red, 6.0 TR224, 4l60e, 3.42 Eaton TrueTrac
          1989 Camaro IROC-Z Convertible - 355 big tube TPI, WC T5, 3.42 Zexel Torsen, CTS-V/C4 brakes
          1955 Bel Air 2 Door Post - 357 TPI, Muncie M20, 4 wheel disc

          2006 Saab 9-7x 5.3i Daily Driver

          Comment


          • #6
            nice. guess thats better then a main bearing?
            sigpic
            11.84 @ 117 w 1.66 60' (previous na best)

            - - 5.3/4L80e/T7875 - -
            - Huron Speed Turbo Kit -

            1998 Formula

            Comment


            • #7
              Have you listened to the oil pan with a sethoscope or extension? Try pulling the plug wires one at a time to see if you can narrow it down to one cylinder.

              Comment


              • #8
                no i havent tried that. cant really tell where exactly its coming from. dont want to wipe out a lobe either. this cam is for sale. im sure the lsk lobe on this comp cam are the culprit
                sigpic
                11.84 @ 117 w 1.66 60' (previous na best)

                - - 5.3/4L80e/T7875 - -
                - Huron Speed Turbo Kit -

                1998 Formula

                Comment


                • #9
                  Re: whats this noise??

                  Well we dropped the ls2 today and pulled the heads and cam. Valvetrain was good, cam was as good as it was when installed, but it does seem that a valve hit the #6 piston. Didnt get to the bottom end due to dustin being sick so we dont know if a wristpin or bearing is the culprit, or if the cam is just too freakin big. Valve looked fine but will have to be checked. Anyone wanna buy a. 657 lift comp cam???

                  Sent from my SPH-D710 using Tapatalk 2
                  sigpic
                  11.84 @ 117 w 1.66 60' (previous na best)

                  - - 5.3/4L80e/T7875 - -
                  - Huron Speed Turbo Kit -

                  1998 Formula

                  Comment


                  • #10
                    Re: whats this noise??

                    Seems #6 bearing spun causing the noise and piston/valve crash. odd as it still had good oil psi

                    Sent from my SPH-D710 using Tapatalk 2
                    sigpic
                    11.84 @ 117 w 1.66 60' (previous na best)

                    - - 5.3/4L80e/T7875 - -
                    - Huron Speed Turbo Kit -

                    1998 Formula

                    Comment


                    • #11
                      Re: whats this noise??

                      2nd motor ive had that spun bearings. wtf am i doing wrong?

                      Sent from my SPH-D710 using Tapatalk 2
                      sigpic
                      11.84 @ 117 w 1.66 60' (previous na best)

                      - - 5.3/4L80e/T7875 - -
                      - Huron Speed Turbo Kit -

                      1998 Formula

                      Comment


                      • #12
                        That's weird. Same pan/ pickup? Gonna use them on the new setup? I would measure the pan to pickup clearance .
                        did the other have marks in the pistons . Wonder if the piston hit first and when it did , it was enough to go thru the oil film and bearing hit the crank. What oil do you use
                        Last edited by 1BADAIR; January 12th, 2013, 10:55 PM.

                        Comment


                        • #13
                          Re: whats this noise??

                          Yeah same pan and pickup off my original ls1. yes gonna use them again

                          Sent from my SPH-D710 using Tapatalk 2
                          sigpic
                          11.84 @ 117 w 1.66 60' (previous na best)

                          - - 5.3/4L80e/T7875 - -
                          - Huron Speed Turbo Kit -

                          1998 Formula

                          Comment


                          • #14
                            Re: whats this noise??

                            Im still thinking that aggressive cam and bouncing off my 6900 rpm rev limiter, which i didnt do the day it happened

                            Sent from my SPH-D710 using Tapatalk 2
                            sigpic
                            11.84 @ 117 w 1.66 60' (previous na best)

                            - - 5.3/4L80e/T7875 - -
                            - Huron Speed Turbo Kit -

                            1998 Formula

                            Comment

                            Working...
                            X