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Yea, first set he ordered only 3 arrived, the other 5 were backordered, next set came from bostic....Was that Murphy? He had to wait on a few so probably not.
I have always wanted to see a piston swap of 18.5:1 with the bowl vs a shaved piston 18.5:1 and no other changes. Engine dyno would be neat to see power differences, but also get them a set load and just burn 1/4 gallon of fuel till empty for mpg.Mahle offered pistons with two different Ricardo bowl depths. One was .158" The other was .064" I believe this was how the compression was lowered on the 6.5 but I never confirmed it. I've always wondered if compression was lowered on purpose or they increased the bowl depth to help with the dual swirl. Anyway if your going to have a set of pistons machined down I would suggest using the deeper bowls so you don't end up effecting the combustion process. I'm a big believer that the Ricardo bowl is necessary on an IDI and it should not be removed to lower compression.
I believe Mahle still offers the .010 decked pistons. Personally I would leave the compression stock myself. Guys are pushing square cups and stock compression to 500hp with great success.
Mahle still has the info on stuff older than the 6.2. Probably could call/ email them up to find outI thought I remembered reading that they changed the pin height
I would like to see information on that. Ive never come across that before. We need @n8in8or to measure some pistons for us. he has probably collected every version of the 6.5 ever built by nowI thought I remembered reading that they changed the pin height
Same here. I have research papers that show the dual swirl in detail. But I would love to see a comparison on a machined piston like what TSP does.I have always wanted to see a piston swap of 18.5:1 with the bowl vs a shaved piston 18.5:1 and no other changes. Engine dyno would be neat to see power differences, but also get them a set load and just burn 1/4 gallon of fuel till empty for mpg.
Then now with the way TSP has the taper cut to flare out across the piston- since I bought a set I obviously think that will do well.
There is the computer simulation of liquid/air flow- that would be great to see the difference- but wouldn’t be as accurate as to what end results are.