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  #1  
Old 02-03-2008, 03:58 PM
KTWillys
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CFM

I have been looking around for a formula for calculating the CFM of the HD engine and the one that I came up with is

RPM X DISPLACEMENT
---------------------
3,456

now with a 95 inch engine and considering max RPM at 6000 I have come up
with a CFM of 167.67939 for this displacement.

So I suppose my question is with this amount of CFM do we really need a super size airfilter.. I have K&N filter rated at around 400 CFM.. so why change.
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  #2  
Old 02-03-2008, 04:02 PM
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TerryMiller TerryMiller is offline
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The answer is no, you don't need a super sized air filter. Freer flowing is better.

You can also get more than 100% cylinder fill but that's usually where the torque peak is, well below 6,000 rpm.

The filter will be flowing a lot less just before ya clean it.
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Old 02-03-2008, 04:09 PM
KTWillys
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Thanks Terry I thought so, guess I just needed confirmation...

So How Is My gAZINTA friend doing these days... all is well I hope...
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Old 02-03-2008, 04:28 PM
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TerryMiller TerryMiller is offline
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I'm doing well. Almost all better.

Work is so nuts that there's almost no recreational time. Hopefully I can get that under control by summer time.
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Old 02-03-2008, 04:33 PM
KTWillys
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Glad to hear it.. figure the whippin from the wife was the worst part...

I know the feeling about too much work,,, but alas it pays the bills....

Hope to see you at the palooza...
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