I haven't the first idea how you make Excel do that! thanks James, really appreciate the help.
I gave you durations at 0.05 lift. At 0.06 which I think is what you've used they are 270/280. This is giving 59 degrees overlap which sounds about right. Feeding in the exact data I have on chamber size/deck clearance etc the dynamic ratio comes out at 8.2:1 so I'll stop worrying now!
Sounds like my engine is fairly similar specs to yours. You've obviously gone into this in some detail. Have you guesstimated what sort of power it should produce? I was hoping for about 400hp but trying to keep the low down power decent as well.
Thanks again for the help
Lloyd
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Lloyd B
De dion Dax - 383 SBC with AFR 195's, how much more can this thing cost?! - Ah that much more! |