engine knocking - FirebirdV6.com/CamaroV6.com Message Board

Announcement

Collapse
No announcement yet.

engine knocking

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

  • engine knocking

    hey guys, just started my car up for a bit since i never drive it anymore, and i can hear a knock coming from the engine.

    it really sounds like it is coming from the rear, and i can "feel" the knock in the shifter.

    when i press the clutch in the knock noise seems way less but i can still feel it in the shifter.

    the knock is not present until the engine warms up and the oil pressure drops (oil pressure is going a tiny bit lower than the halfway point between 60 psi and 0, and im also not getting 6-psi at 2000 prm like i used to)

    any ideas other than internal engine knocking?

    im still unsure if i should rebuild the 3.8 or drop a sbc in.

  • #2
    Re: engine knocking

    get the car up on jacks and fire it up on the stands, see if you can see anything.

    When I broke my exhaust pipe at the cat it came up and knocked on the floor...I was ****ting myself thinking I blew motor.

    Just make sure it's not some suspension part hitting something, you shouldnt feel engine knock in the shifter...both times my motor went I never did...even when my piston came through block I just felt it in the pedal the instant it happened...and I drove about 150k with it knocking...what I did feel when I drove though is the engine bogged and felt powerless...probably because kr showed about 15* (which is maxed on hp tuners) at all times...I was running on about 3* timing lol

    2002 SOM Z28 Camaro - 12.9 @ 104 mph
    1996 3800 Camaro - 13.43 @ 100.77 mph


    Project Cars | How To Guides | Scratch Repair | Synthetic Oil

    Comment


    • #3
      Re: engine knocking

      i loked under the car, and there is no signs of the exhaust hitting. i cant really hear the knocking noise outside the car, but it is extremely loud inside

      Comment


      • #4
        Re: engine knocking

        The symptoms sound like rod knock to me.

        Comment


        • #5
          Re: engine knocking

          Originally posted by Cool81z28 View Post
          The symptoms sound like rod knock to me.
          thats what im thinking, since it only does it once the engine warms up and the oil pressure starts to drop, and it gets louder the lower it goes..

          i know nothing about rebuilding these engines.. how much would it cost me to fix it.. just thinking the crank needs polished/re ground, and the bearings replaced.. I would also want to hone the cylinders and get new rings

          Comment


          • #6
            Re: engine knocking

            Other peop[le here can answer that better than me but I would think it needs to be torn down first to see exactly what machine work needs to be done.

            Comment

            Latest Topics

            Collapse

            • Andy H
              Transmission removal help!!
              by Andy H
              Hey everyone! I've been trying to remove my transmission for two days now! I need to replace the clutch. Only thing I've got left holding the transmission...
              2 weeks ago
            • 2.8 Bird
              Abs inop
              by 2.8 Bird
              Hello, so I changed the front bearings on the bird and the ABS inoperative light came on. I made a mistake of not removing negative battery cable. Now...
              3 weeks ago
            • fishin
              Intermittent Headlight Function 97 Firebird
              by fishin
              I usually have to double, triple my headlight switch for them to come up on my 97 Firebird. I cleaned all connections. Could it be the headlight switch...
              3 weeks ago

            FORUM SPONSORS

            Collapse
            Working...
            X