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Thread: Torque Plate to Gap Rings?

  1. #1
    Join Date
    Jul 2011
    Location
    Bay Area, California
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    591
    My Cars
    M3 w/Gt35r

    Torque Plate to Gap Rings?

    How is everyone gapping their rings? With or without a torque plate?

    My new engine consists of:

    87mm JE 9:1 pistons
    Eagle rods
    ARP mainline (S54)
    Torque plate honed
    Line honed

    I've noticed that even before filing any of the rings, that the end gap is slightly larger towards the inside. The inside to outside difference is around .0001". This is with no torque plate installed. I'm tempted to see how the results very when using one.

  2. #2
    Join Date
    Aug 2011
    Location
    philadelphia PA
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    461
    My Cars
    1993 325is
    The "right" way to do it would be gap them with the torque plate.

    The "realistic" answer is it doesn't matter. The ring gap doesn't need that kind of precision to work well.

    Since it sounds like you have a plate already handy why not just do it. Certainty cant hurt.

  3. #3
    Join Date
    Apr 2006
    Location
    Minnesota eh?
    Posts
    6,155
    My Cars
    86 325es
    A torque plate would be of no benefit


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  4. #4
    Join Date
    Feb 2012
    Location
    Birmingham, Alabama, USA
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    8,369
    My Cars
    1995 BMW M3
    I had my block bored and honed with no torque plate and I gapped the rings without one as well. Not saying its the right way, but 10k miles later at 700whp I have no issues and compression is exactly 165psi across all 6.

  5. #5
    Join Date
    Nov 2009
    Location
    Long Island, NY
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    67mm 325i, RAM 1500
    You'll be fine.

  6. #6
    Join Date
    Oct 2012
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    washington, dc
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    96 E36 Vert 03 E39 M5
    Nice . What hg and are you cut ringing the head at 87mm ?


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  7. #7
    Join Date
    Jul 2011
    Location
    Bay Area, California
    Posts
    591
    My Cars
    M3 w/Gt35r
    Quote Originally Posted by Turbohugh View Post
    Nice . What hg and are you cut ringing the head at 87mm ?


    Sent from my iPhone using Tapatalk
    Yes, i'll be using a cutring head gasket.

    Appreciate the help everyone.

    Also, can anyone recommend a decent ring filer? I bought one off of Amazon and it ended up flaking the ring coating ever so slightly. It has a slight wobble from side to side. I was thinking about making a homemade dremel ring filer as an alternative. Thoughts?

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