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Thread: Rocker arm ratio?

  1. 11-18-2009, 02:51 PM #1
    turbovanman²
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    Rocker arm ratio?

    Anyone know what it is? Thanks.
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  2. 11-18-2009, 07:19 PM #2
    86Shelby
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    Re: Rocker arm ratio?

    1.x Should be easy to figure out with a dial caliper. I'll try to remember to measure tonight after work.
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  3. 11-18-2009, 07:28 PM #3
    2.216VTurbo
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    Re: Rocker arm ratio?

    Hmm, for some reason I thought the TIII rockers were 1:1? Had to do with the pivot point not being centered in the rocker...

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  4. 11-18-2009, 11:31 PM #4
    Force Fed Mopar
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    Re: Rocker arm ratio?

    Get out your calipers...

    http://www.gregsengine.com/rocratio.htm
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  5. 11-19-2009, 03:29 AM #5
    turbovanman²
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    Re: Rocker arm ratio?

    Thanks, I'll do that tomorrow.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
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    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

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  6. 11-19-2009, 11:17 AM #6
    turboshad
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    Re: Rocker arm ratio?

    Except that diagram is for a pushrod engine. For an overhead cam rocker, take the length of the rocker from the lifter contact to the valve stem contact and devide it by the length of the rocker from the lifter contact to the cam contact. Neons and SRT4s seem to be around 1.75 so I would think you would find something close to that.
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  7. 11-19-2009, 01:48 PM #7
    Force Fed Mopar
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    Re: Rocker arm ratio?

    Quote Originally Posted by turboshad View Post
    Except that diagram is for a pushrod engine. For an overhead cam rocker, take the length of the rocker from the lifter contact to the valve stem contact and devide it by the length of the rocker from the lifter contact to the cam contact. Neons and SRT4s seem to be around 1.75 so I would think you would find something close to that.
    I was thinking that common sense would tell him that, buuut...
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