Oval Chamber Pistons
- Thread starter Fingers
- Start date
Everything has a breaking point. Just don't know where that point is for these pistons. Apparently north of the current installations.
Thanks for the PM, sent you some more questions. Let me know. Interested and ready to make a move on something.
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Brett has made at least ten 9sec passes on cast fingers pistons at 148mph in his
C10 with vgt twins. I am almost 1100hp with vgt twins and single cp3 on cast fingers pistons. I have sled pullers running these pistons in 1200+hp setups and so far we have not had a single issue with them. We are extremely pleased with the performance!:thumb:
C10 with vgt twins. I am almost 1100hp with vgt twins and single cp3 on cast fingers pistons. I have sled pullers running these pistons in 1200+hp setups and so far we have not had a single issue with them. We are extremely pleased with the performance!:thumb:
I was wondering, for use "budget" guys, use stock LB7 pistons and cut the oval into them. I would guess the oval would not be the sames as on the cast and forged pistons, but with your simulation showing that the oval is stronger the just delipping, something like this would better? I would of loved to use your piston in my build, couldn't, that is why I am asking.:thumb:
That wouldn't be the same. The point of the oval is to keep the CC's the same but add more material in the bottom of the oval area where the wrist pin is at.
The oval ports in fingers pistons can be/are the same volume as factory... If you cut the oval into factory pistons you would make the chamber so large that compression would suffer. Besides the way the oval is designed it puts more piston material parallel with the wrist pin, which is where they like to crack. A stock piston that had a oval chamber cut in it would have the same amount of material over the wrist pin therefore making it just a weak as a stocker with really low compression.
Almost regardless of the required compression, I leave the same amount of material over the pin. That material is already gone on the stock piston bowl, and that is what make these oval pistons "different". Most any compression can be dialed in by adjusting the volume of the end chambers.
I'll say I was very impressed with how much more material these have over the wrist pin once I got them in my hands. I can definitely see how these will be much less likely to crack.
In case anyone is curious, my scale says these piston assemblies (piston, rings, pins, clips) are 80 grams lighter than a stock LMM piston assembly.
In case anyone is curious, my scale says these piston assemblies (piston, rings, pins, clips) are 80 grams lighter than a stock LMM piston assembly.
i received my pistons jon, these pistons are a work of art!! i almost wannna sit a set on a shelf and just look at em haha. very good craftsmanship:thumb:
