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A professional stock eliminator engine builder would have measured the valve the right way and in Irvin's case with no number on top of the piston would have called California for clarification. You can't assume these motors are going to be right when you get them.
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Greg Hill 4171 STK |
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He explained that some aftermarket manufacturers would submit a piston and then build a different piston with the same numbers for a customer. After listening to the stump speech for what seemed like an eternity. I explained (or tried to for about the 3rd time) that the pistons in question were not stocker pistons. But stock assembly line pistons, that came in ever 2.5 turbo mopar ever built (a couple of million). When I explained that a .375 difference would make any diesel proud. He looked at me with a bewildered look. The outcome was they let california make the call. I was not allowed to race that weekend and was never offered a refund. Even though I was totally legal (as per california). Another go round was when they tossed me for having my pistons to far down the bore. He told me it could be an advantage allowing more piston to valve. But then told me I could run any thickness head gasket. I miss Gregg X's common sense.
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Art Leong 2095 SS |
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That is who I would be blaming, not MOPAR. Who takes an OEM engine and just runs it? Do that and you deserve what you get. Ever hear of production tolerances? The "engine builder" had to have access to NHRA's specs. Why was everything not measured?
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Ed Wright 4156 SS/JA |
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You could hardly call these OEM motors - they are complete "race ready" spec motors from Arrow Racing and two of them had been through NHRA tear down before and passed I know Arrow built these as good as any engine builder out there - they just did not know MOPAR made a mistake - they used the valve which was identifed to go in the heads - stock size for a Gen IV viper engine - The TI sheet was submitted to NHRA after the engine building started - the valves used were appearently incorrectly measured by MOPAR engineering - used a blue print to figure out how to do it - LMFAO "this is not your father's Oldsmobile" Ron
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time is our most precious resource, you can always make more money but you can never make more time spend your time wisely with the ones you love - Ron Durham Last edited by Andys dad; 05-01-2012 at 12:11 PM. |
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#5 |
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What you do is measure everything against NHRA specs. That's what you go by.
If that is who built it, they should not have assumed. I would be concerned if I owned one. I hope they don't charge much. LOL
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Ed Wright 4156 SS/JA |
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No Problem - all MOPAR had to do was submit the corrected TI sheet Its a beautiful thing Ron
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#7 |
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Comes down to one thing: all the engine builder had to do was measure everything. That simple. That is who is at fault. If I couldn't do my own I would use a known builder of NHRA legal engines. Not some road racers.
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Ed Wright 4156 SS/JA |
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Greg Hill 4171 STK |
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Could be the vendor (chances are MOPAR didn't actually make the valves.) missed the spec. Can't blame MOPAR. It's the builder.
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Ed Wright 4156 SS/JA |
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I am glad MOPAR was willing to help all of the people out who really made the mistake and changed the TI sheet with NHRA
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time is our most precious resource, you can always make more money but you can never make more time spend your time wisely with the ones you love - Ron Durham Last edited by Andys dad; 05-01-2012 at 05:40 PM. |
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