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6.0 Aftermarket
My Redemption build
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[QUOTE="KCTurbos, post: 1381040, member: 13852"] I had a few questions that were asked on another forum that I am gonna copy and paste here... Just in case anyone else had similar questions. "Why are you testing a 64.5 vs a 68mm turbo? " "isn't the 64.5 doing more with less" You make a good point and I guess it would have been a good idea to compare/explain the turbo sizes before testing... but they are actually very similar in size. A lot of guys only focus one "compressor" measurement. But that is just one piece to the puzzle. The turbine side is just as important, maybe even more. The wheel Trim also greatly changes the shape/performance of a turbine wheel. Turbine wheels 74x70 vs 80x74 (that means the exducer of the s364.5 is bigger than the largest part of the stage 3 turbine wheel). 6mm bigger inducer 4mm bigger exducer Comp wheels 68x94 vs 64.5x88 3.5mm bigger inducer 6mm bigger exducer Even if you dropped down to the 68mm turbine wheel for the s364.5 it would still be a slightly larger turbine wheel because of the trim of the wheel... but simple math at least puts them closer on the turbine wheel side. I am sure at that point the s364.5 would lose at least a few HP and then put the stage 3 on top. That is all just theory... but I might buy a 68mm .91ar turbine housing and try it out. 74x70 vs 76x68 Although basically negligable the A/R housgins are .90 vs .91 so the s300 has a slightly bigger exhaust housing. So they are actually both VERY close in size. One has a larger comp wheel and the other one has a larger turbine. I would definitely not say that the s364.5 is "doing more with less". I would say it makes 5hp extra on the top end with extra lag down low. The closest comparison would probably be an s363 with 68 turbine vs stage 2.5 but I bought the s362 because it seems to be much more popular. So I guess the s362 vs Stage 2 will have to do for the smaller turbos. Turbine wheel - s300 is bigger 72x66 vs 76x68 4mm bigger inducer 2mm bigger exducer Comp wheel - stage 2 is bigger 64x88 vs 62x83 2mm bigger inducer 5mm bigger exducer So my theoretical testing pattern was S364.5 vs 68mm stage 3 turbo s362 vs 64mm stage 2 turbo My testing was not meant to say which turbo or turbo "type" was better. I just wanted good truthful data instead of the BS that gets regurgitated on the internet. [/QUOTE]
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