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Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Apr 25, '03 From Miami, FL Currently Offline Reputation: 9 (100%) ![]() |
Eyo, wutup my peoples? Lol. Sry, I'm a little hyper. But yeah, I'm about to buy a T3 turbo. I'm undecided between the 60 trim and Super 60. Super 60 sounds cooler and very expensive... So I want to know what the difference between those two are. THANKS.
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Mar 31, '04 From Summerville, SC Currently Offline Reputation: 5 (100%) ![]() |
That CFM formula is totally wrong. You can't use liters, you have to use cubic inches, and you didn't multiply by .5 for a 4-stroke engine, among other things.
Think about it. CFM means Cubic FEET per Minute. You can't calculate feet from liters unless you convert the numbers first. ![]() Okay cool, you can do that, by multiplying the number by .0353! (Google says, "1 liters = 0.0353146667 cubic feet") But you still need to multiply by .5. Here's another formula: (All this really does is save you one calculation). 1.8 liters x 6500 (max RPM) x .5 (4 stroke engine) x .90 (approx. VE) x 0.0353 = 185.8 CFM Everything from here on is the same If he's running about 7.5 psi (he actually wants to run 6), then that's a pressure ratio of 1.5, 15 psi being about 2.0. 185 x 1.5 = 278 cfm at 7.5 psi 185 x 2.0 = 371 cfm at 15 psi At sea level and 85* (less than ideal conditions), the weight of a cubic foot of air is .073 pounds. 278 cfm x .073 = 20 lbs 371 cfm x .073 = 27 lbs playr158, you better change that tech file!!! ![]() This post has been edited by Dr_Tweak: Dec 5, 2005 - 1:20 AM -------------------- -Dr Tweak, 6GC's resident engine swap wiring expert extraordinaire Click here to see my swaps drtweak@phoenixtuning.com |
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