90mm TB CFM ?
05-12-2006, 04:02 PM
#2
It flows a LOT.
This thread claims a shop flowed it to 1200 cfm.
https://ls1tech.com/forums/generation-iii-external-engine/493553-nw-90-mm-tb-question.html
Another method: Pipe flow can be determined by (cross sectional area x 115) = CFM. The 90mm NW I have sitting here is right at 3.5" ID in the smallest part.
PiR^2 x 115 = 3.1415[(3.5/2)^2] x 115 = 1106cfm. You'll have to subtract a bit for the blade/shaft. Compare that to however big of holley you are wondering about. Not sure how accurate this is, but you get the picture.
You'd need one helluva holley to flow the same.
This thread claims a shop flowed it to 1200 cfm.
https://ls1tech.com/forums/generation-iii-external-engine/493553-nw-90-mm-tb-question.html
Another method: Pipe flow can be determined by (cross sectional area x 115) = CFM. The 90mm NW I have sitting here is right at 3.5" ID in the smallest part.
PiR^2 x 115 = 3.1415[(3.5/2)^2] x 115 = 1106cfm. You'll have to subtract a bit for the blade/shaft. Compare that to however big of holley you are wondering about. Not sure how accurate this is, but you get the picture.
You'd need one helluva holley to flow the same.
