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  1. D

    Loose harmonic balancer AND crank pulley

    I had that happen on One Lap of America. The bolt fell out at the Indy dragstrip and fortunately one of the spectators saw it and brought it to me. I questioned the garage and found out they did not use the special tool to seat the damper before installing the bolt. I did my best to get it...
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    Oil Filter Recommendations

    Per Steve-Indy use the SRT filter for your application.. I did all the dyno work and tested a ton of filters. The production engines were having debris in the bearings and I found the filter bypass was being pushed open because of the high oil flow in the Viper. In effect no oil was getting...
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    1999 GTS - Exhaust Manifolds Glowing Red

    I would just interrogate the spkadv address and it gives the delivered spark with all multipliers and adders.
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    1999 GTS - Exhaust Manifolds Glowing Red

    Here is the base spark for a 98 coupe and idle speed is 700 rpm. I would think a 99 coupe would be similar but I did not spend a lot of time looking for the 99 version. The left column is rpm and base spark for the 704 rpm line is 10.000 degrees. The columns are divided by map. Idle would...
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    1999 GTS - Exhaust Manifolds Glowing Red

    I would suspect the reflash but it sure is an odd set of circumstances. I used to retard the ignition timing to get those glowing header photos in the Viper brochures. Are both headers glowing red?
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    2004 Dodge Viper Gen 3 - lost oil

    I have seen filters form a hairline crack in the rolled seam where the can meets the top. A lot of testing was done on oil filters and SRT came out with their own filter. My second choice would be a Wix gold. I believe they have been purchased by Mann but still should be a good choice.
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    Car will not start unless fuel pump unplugged first

    I would venture the warm startup prime shot is too large. But if I recall correctly there is no prime shot above a certain coolant temperature. The injector fueling rate may have drifted over time and small pulsewidths may now be too large or they are leaking slightly. It certainly appears to...
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    HELP! Electronic throttle control light - limp mode - running rough - won’t start

    Start with reading the fault codes. Some will be set and that will give you information on what to check next.
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    Priming Motor that sat for 6 months. Did I screw up?

    It's fine. Drive it!
  10. D

    What the hell is wrong with this dyno test...

    What were the weather conditions that day? If intake charge temps are elevated the ecu will pull out a good amount of timing. What year is your car?
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    Upgraded Viper running rich?

    The moisture on cold start is normal and is a byproduct of the combustion process. All engines do it. The black spots is most likely the moisture picking up soot in the exhaust system and is not an indicator of running rich. The decel popping could be how the calibration is done. If the...
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    Hard Start and Fuel Pressure Regulator

    That sounds like the fuel pump outlet check valve is leaking. When the car is shut off the fuel line should remain pressurized. It could also be the regulator.
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    Gen 3 - Crankshaft pulley bolt --add me to the list.

    The damper must be seated all the way before torquing the bolt. There is a tool to do this. Trying to pull the damper on with the bolt will not bottom it. That is why it comes loose. It wasn't assembled properly.
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    Troubling Dyno results for Stock 2006???

    How high were the intake charge temperatures? The engine becomes more knock sensitive with elevated temperatures and pulls spark and adds fuel to compensate. If I remember correctly this starts to happen about 95 degrees F intake charge temp. Chassis dynos are notorious for not having...
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    Car & Driver does it again.......

    At One Lap the word on the GTR was that is only fast on the XBOX.
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    Hennessey 2008 ACR in One Lap of America ..... looking good !!!!

    Chris unhooked the rear swaybar for the wet skid pad and he is deeply regretting it. The car oversteered badly resulting in the poor performance. But he is a man possessed and with some help will knock Davia off the top of the heap.
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    2008 Long tube headers need tuned ??

    Yes, specifically what I've mentioned is about the '08.
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    2008 Long tube headers need tuned ??

    After working on these engines for the last couple of years I would venture to say that you should be able to pull some fuel out, maybe quite a bit, at top end with headers. I never got the chance to run any headers but I would expect them to want the exhaust cam timing to have an earlier...
  19. D

    Im doing the comp coupe cam

    Never,EVER put a cam in without degreeing it in (unless it's your lawnmower). There can be significant power to be had so make sure it is correct. A stock '00-'06 cam should have the intake centerline at 120-122. You will find a lot of them at 127-128 and it kills the torque curve down low...
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    08 Viper parts work on 03-06 Vipers?

    The engine is basically the same design but many features are very different. The fasteners are now all metric. The pushrod angle has changed. The lifter bores have rotated upward with respect to the cam bore centerline to straighten out the pushrod angle. The oil pump is larger and the way...
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    Official ACR info

    Trust me. It's BAD ASS!
  22. D

    So With 600HP In The 2008s, What The Heck Will A Supercharger Produce?

    Broken parts.:smirk:
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    SRT Engineer Chat HERE on September 19th!

    Thanks Hollywood and Winkey.
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    08 forged bottom end ??

    No, it does not. It uses the piston/rod assemblies from the 6.1L Hemi.
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    PCM says engin too cold: Code 1281

    It won't run in closed-loop nor update any fuel adaptives.

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