Fighting some knock issues

Discussion in 'E85 Technical Forum' started by czimpel, Jul 13, 2017.

  1. Ttype6

    Ttype6
    Expand Collapse
    Well-Known Member

    Joined:
    Aug 17, 2004
    Messages:
    2,887
    Likes Received:
    153
    Offline
    Those should be OK.
     
  2. dynoman

    dynoman
    Expand Collapse
    Well-Known Member

    Joined:
    Nov 30, 2009
    Messages:
    1,385
    Likes Received:
    161
    Offline
    No not necessarily , but every car is different and many like to run non-projected tip plugs on E85 & TR6 . These are a good , cheap & readily available option .
     
  3. BEATAV8

    BEATAV8
    Expand Collapse
    The Engine Whisperer

    Joined:
    Feb 14, 2002
    Messages:
    4,569
    Likes Received:
    366
    Offline
    Did you get to fix the wide band ground? The wide band ground has to carry the amps for both the sensor controller and the sensor heater. Grounding it to the powerlogger block stands a good chance of overloading that circuit (through the powerlogger / ECM).

    The ECM is grounded to the engine, so if you ground the wide band to the engine you should have near zero ground offset. The WB controller reading should then match well with it's analog output.
     
  4. BEATAV8

    BEATAV8
    Expand Collapse
    The Engine Whisperer

    Joined:
    Feb 14, 2002
    Messages:
    4,569
    Likes Received:
    366
    Offline
  5. dynoman

    dynoman
    Expand Collapse
    Well-Known Member

    Joined:
    Nov 30, 2009
    Messages:
    1,385
    Likes Received:
    161
    Offline
    This is the plug I switched to after the non-resistor plug issues myself and others had a while back . No problems now .
     
    • Like Like x 1
  6. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    I haven't yet, but will do this tomorrow.
    Just for info, I have it still grounded to the body, but added a second eyelet with a ground wire to the PL #6.
     
  7. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    I took it out for a run quick this morning after turning my boost controller down, but my boost actually went up. I'm including this run file to see that the KR actually wasn't as bad. I'm still going to ground the WB to the block, pull the plugs, and unhook my WG rod for a low boost pull.
     

    Attached Files:

  8. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    I moved the ground this morning and it seems to be a lot close of reading. Also pulled a plug from each bank. It was hard to get in focus close ups, let me know if you need some better pics to see what you are looking for.
    IMG_7071.JPG IMG_7072.JPG IMG_7073.JPG
     
  9. BEATAV8

    BEATAV8
    Expand Collapse
    The Engine Whisperer

    Joined:
    Feb 14, 2002
    Messages:
    4,569
    Likes Received:
    366
    Offline
    Best to look at them through a magnifying glass but from here they look nice. No speckles apparent.
     
  10. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    Also found this.Could this be causing it. IMG_7069.JPG
     
  11. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    Made a couple runs with the WG rod disconnected. One was clean the other had some KR. Still get 15-16 lbs of boost with it disconnected.
     

    Attached Files:

  12. BEATAV8

    BEATAV8
    Expand Collapse
    The Engine Whisperer

    Joined:
    Feb 14, 2002
    Messages:
    4,569
    Likes Received:
    366
    Offline
    The low boost pulls are pretty rich. Might be "rich knock" like you were suspecting.
     
  13. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    I richened it up to 11.3 today and made a couple pulls with very little KR. One thing that I notice is that it always seem to appear right at 4800 RPM. Could this be from some weird harmonic that the motor is creating with something that rattles?
     
  14. TurboTGuy

    TurboTGuy
    Expand Collapse
    Gray Beard Member

    Joined:
    Sep 24, 2010
    Messages:
    3,190
    Likes Received:
    820
    Offline

    Is there catalytic converter on the car? Could it be corroded out and start rattling once it hits that RPM?

    Seems you're grasping at straws now, so..........WTH, thought I'd throw that out there.

    Always something with these cars..... gotta love 'em! :):(:)
     
    #34 TurboTGuy, Jul 21, 2017
    Last edited: Jul 21, 2017
  15. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    No cat. Thanks for the idea though.
    I've slowly been looking for rattling pieces and parts. I think it was actually a combination of my WB being off due to my ground and being a little rich for what my motor likes. I was just nervous about running it too lean, but it seems the leaner I go the less KR I'm seeing.
     
  16. Pronto

    Pronto
    Expand Collapse
    A Lannister always pays his debts.

    Joined:
    Dec 9, 2002
    Messages:
    10,984
    Likes Received:
    651
    Offline
    Does your wb require calibration? Maybe it's not reading accurately or needs replacing.
     
  17. czimpel

    czimpel
    Expand Collapse
    Boost...gotta get some!

    Joined:
    Aug 16, 2012
    Messages:
    675
    Likes Received:
    132
    Offline
    It's not the one that can be calibrated. It's an AEM 34-3100???
     
  18. BEATAV8

    BEATAV8
    Expand Collapse
    The Engine Whisperer

    Joined:
    Feb 14, 2002
    Messages:
    4,569
    Likes Received:
    366
    Offline
    That motor mount could certainly cause a false signal. I had one once with a broken bolt (bracket to block bolt)
     

Share This Page