I’m getting real tired of people who know nothing about performance engines HARPING about this.
Let me explain in a way most people can understand.
The connecting rod was light by 2.7 grams.
2.7 grams is about the weight of one dime
A racing engine rotating assembly is balanced to tolerances of +or- .02 grams it is preferred to have .00grams +or- . plus the balance engine parts are piston,wrist pin,rings and circlips plus .8 grams for oil.
NASCAR picks one connecting rod out of 1 engine per manufacture at random the 20 car just happened to be that car.
TO HAVE A BALANCED ENGINE EVERY ROD MUST WEIGH THE SAME!!
So if one rod was light they all were for a total of 21.7 grams letting the engine reach high revolutions faster that is not counting the pistons, rings and piston wrist pin's

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SST tonight.

yes i know no one cares about nascrap but as an engine builder im tired of people who know nothing making comments on other sites and i just wanted to vent

I care Tim.. I wanted to know why that made a difference. To me it seemed like a disadvantage...

It's a huge source for debate up here in Wisconsin/Kenseth land. If the articles that have been published up here are correct, TRD and its suppliers have major quality control issues. The weight of the rods was all over the place. The neighboring rod was supposedly 4 grams overweight.

trooper before assembly all parts are made to weigh the same (mostly bi grinding weight off weight) if they do not weigh the same the engine will shake itself apart
contact any engine builder and they will say the same thing

I get the concept, but am still trying to weed through all of the BS. Several reports that I have read, including one on nascar.com said that the neighboring rod was 4 grams overweight.

TRD in their release said that they don't check every item that comes in from their vendors - that they rely on ISO certification. Perhaps that's a poor practice on their part. Either way, there's more questions than answers....

true there

I'm calling BullShit on TRD's response.
They are the engine builders,they have to know what components weight.
It's major part of engine building

you're so right

we're supposed to believe TRD engines are not balanced?

right

Thanks for the post because I didn't think it made that big of a big difference. I am now better informed

I know exactly what you mean Tim, either TRD really sucks at quality control which I could believe for lesser teams but not for a team such as JGR or they are blowing a lot of crap out there ass which is more likely in this case. Just my opinion.

Not to mention what JGR has done in the last 24hrs sending back a bunch of engines ...

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