Thread: Authenticity of a 1” GMR Chain

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  1. #1 Authenticity of a 1” GMR Chain 
    GT Level Member 94GrandPrixSE's Avatar
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    Can someone please tell me how to correctly measure a real 1” gmr chain? In comparison to let’s say a 15/16”? These made by borg? Any help Is appreciated.
    02 GTP - Cartuning Turbo Kit VS67 3" DP, 80#INJ, N*,LQ4 MAF, Custom Cam, Roller Rockers, 130#, P&P Heads, Meth, AL103's, Corn fed, 522WHP on a mustang dyno, HP Tuners by me.
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  2. #2 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member Turbocharged400sbc's Avatar
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    the GMR in front of me is a Morse (on link plates) hy-vo with a squirrel figure in profile after the vo (this may be a batch demarcation)

    046 74607 is on the dark blue link. chain measures 1.060 OD from outer guide plate to outer guide plate .940 across the id
    ~James~ Psychotic Gearhead
    projects: 84 Cressida waGN~ 90 LN3 3800, equal length headers, T70, 89 700r4, misc parts,
    1994 Oldsmobile 442 (462ci-4wd-2 engines) L67/4t80e^2,
    00 Turbo Regal 608 fwhp 575ftlbs at 5500rpm, 98 WhippledRiv, 97 GTP
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  3. #3 Re: Authenticity of a 1” GMR Chain 
    GT Level Member 94GrandPrixSE's Avatar
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    Thank you!
    02 GTP - Cartuning Turbo Kit VS67 3" DP, 80#INJ, N*,LQ4 MAF, Custom Cam, Roller Rockers, 130#, P&P Heads, Meth, AL103's, Corn fed, 522WHP on a mustang dyno, HP Tuners by me.
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  4. #4 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member GTPpower's Avatar
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    A 1" open end wrench will not fit around a 1" chain. But it will fit on the 15/16 and 7/8.
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  5. #5 Re: Authenticity of a 1” GMR Chain 
    GT Level Member 94GrandPrixSE's Avatar
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    I received the chain today it does appear to be an authentic chain but it was sold to me as new and was wondering what you guys thought and how much play a new gmr would have between links. Also seems to have wear marks on one side.
    8297-ECE0-1-D3-A-445-F-8-B54-8-B7-D453358-D7 — ImgBB
    5099-EEC4-8-D89-432-A-A6-E5-95-A8968-BC944 — ImgBB
    02 GTP - Cartuning Turbo Kit VS67 3" DP, 80#INJ, N*,LQ4 MAF, Custom Cam, Roller Rockers, 130#, P&P Heads, Meth, AL103's, Corn fed, 522WHP on a mustang dyno, HP Tuners by me.
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  6. #6 Re: Authenticity of a 1” GMR Chain 
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  7. #7 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member GTPpower's Avatar
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    The on
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  8. #8 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member GTPpower's Avatar
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    Whoops. The only way you can check wear is by installing it. The manual has a procedure for it with the chain installed.
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  9. #9 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member Turbocharged400sbc's Avatar
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    the wear is from the links contacting the ISS tone wheel under heavy IS loading (slip n grip traction event at high power)

    probably should sell the TR's 2.93 1" GMR
    ~James~ Psychotic Gearhead
    projects: 84 Cressida waGN~ 90 LN3 3800, equal length headers, T70, 89 700r4, misc parts,
    1994 Oldsmobile 442 (462ci-4wd-2 engines) L67/4t80e^2,
    00 Turbo Regal 608 fwhp 575ftlbs at 5500rpm, 98 WhippledRiv, 97 GTP
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  10. #10 Re: Authenticity of a 1” GMR Chain 
    GT Level Member 94GrandPrixSE's Avatar
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    Do you see this chain any weaker or would have any problems holding 650-700whp?
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  11. #11 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member Turbocharged400sbc's Avatar
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    oh it'll hold, it still destroys the tone wheel/ISS sensor but the chain survives.... but your still pulling it apart....

    the 7/8ths will handle 700whp...provided you dont slipngrip.

    11 times we've broke transaxles. dyno's at 608fwhp e85 18psi. this last time we broke it was at 28psi and we spun the slicks at 105mph. IFR shows we woulda been at 700+ whp at the slipngrip
    ~James~ Psychotic Gearhead
    projects: 84 Cressida waGN~ 90 LN3 3800, equal length headers, T70, 89 700r4, misc parts,
    1994 Oldsmobile 442 (462ci-4wd-2 engines) L67/4t80e^2,
    00 Turbo Regal 608 fwhp 575ftlbs at 5500rpm, 98 WhippledRiv, 97 GTP
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  12. #12 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member Turbocharged400sbc's Avatar
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    quick pic fer ya
    GMR 1inch, GMR 2.93 sprockets (from statama bftgt), GMR armet 100 IS

    7/16ths pitch 4t80e stuffs above it....

    enjoy the GMR Pr0n
    GM Racing GMR 1 inch chain and 2.93 sprockets, 1200hp GMR IS, 4t80e chain above - Google Photos

    ~James~ Psychotic Gearhead
    projects: 84 Cressida waGN~ 90 LN3 3800, equal length headers, T70, 89 700r4, misc parts,
    1994 Oldsmobile 442 (462ci-4wd-2 engines) L67/4t80e^2,
    00 Turbo Regal 608 fwhp 575ftlbs at 5500rpm, 98 WhippledRiv, 97 GTP
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  13. #13 Re: Authenticity of a 1” GMR Chain 
    GXP Level Member Turbocharged400sbc's Avatar
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    ~James~ Psychotic Gearhead
    projects: 84 Cressida waGN~ 90 LN3 3800, equal length headers, T70, 89 700r4, misc parts,
    1994 Oldsmobile 442 (462ci-4wd-2 engines) L67/4t80e^2,
    00 Turbo Regal 608 fwhp 575ftlbs at 5500rpm, 98 WhippledRiv, 97 GTP
    Reply With Quote  
     

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