Quote:
Originally Posted by mx_masta
Just so I'm not being picky for the sake of it.
Here is a quick sketch of how I see your best option with the current runner length.
You would of course have to cut the runners off square to the runner rather than the plenum centreline as you have now.
But that shouldn't change the inlet characteristics too much from where you are now. It would be a very minimal change to effective length (measured at the centre of the port.)
And would get you a lot more plenum volume.
Sure it would be harded to make 'cos you would need to use plate instead of tube.
But your'e going to all of this effort, may as well do it the better rather than the easy way.
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i agree, here are some rough calcs (my trig is rusty):
isosceles trapezoid in shape: a=2", b=4", h=3" (50.8mm^2, 101.6mm^2, 76.2mm^2)
A=((a+b)*h)/2=5806.44 mm^2
length is 12" (304.8mm^2)
V=A*L=1769802mm^3=1770cm^3=1.77L
plenum volume vs. displacement %=1.77L/2.5L=70.8%
calculations for angle to cut runners:
tan(x)=3/1:x=71.56 degrees (measured counterclockwise from base of firewall side flanges, viewing from driver side perspective)
machine shop will love me with these cut specs
reuben