stock bottom end f1A
I love seeing direct comparisons like this to get an idea of the direct differences between the two. I'm at the limit of my D1SC and am considering an F1-? on my setup, which is a forged 347, so seeing the comparison is very relevant to me. Any other changes made Evan like intercooler size or inlet or cam or was it a direct swap between D1SC to the F1-A?
I still have trouble wrapping my head around bigger vs smaller blower: obviously a bonehead like me can understand that a bigger blower is capable of pushing more air volume and pushing it with more efficiency
(less cannibalizing of power, better/ lower IATs etc,,,) for peak numbers. I also know that boost is never a measure of power. What I cant understand is how a certain level of boost (a measurement of resistance) can produce more power than the same level of boost (same level of resistance) in one blower to another. In this case its even more of a divergence as the boost is lower at 9.5# to the smaller blower @ 11#.
Did I just answer my own question ( is it all in the efficiency ) ?
I still have trouble wrapping my head around bigger vs smaller blower: obviously a bonehead like me can understand that a bigger blower is capable of pushing more air volume and pushing it with more efficiency
(less cannibalizing of power, better/ LOWER IATs etc,,,)
Did I just answer my own question ( is it all in the efficiency ) ?
I've seen F1D's outperform a D1SC the very same way.(Same boost. Different performance.)
So yes....You answered your own question.
Thanks for clearing that up for me. Sometimes the obvious answer is the right answer.
The current impeller speed you have right now puts the F1A at a disadvantage.
It takes more engine speed to peak higher at a loss across the board.
From the looks of that graph, the D1SC would've kept climbing had you run further out in RPM's like the F1A.
Having both peak boost/peak RPM's equally would be a perfect comparison.
Thanks for sharing.
It takes more engine speed to peak higher at a loss across the board.
From the looks of that graph, the D1SC would've kept climbing had you run further out in RPM's like the F1A.
Having both peak boost/peak RPM's equally would be a perfect comparison.
Thanks for sharing.
Last edited by Firehawk441; Sep 5, 2014 at 04:48 PM.
next year I will be pullying it for 12#s and adding some meth so we will see what happens then, right now its fun just having the car back together after being apart for 9 months.
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