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Air-flow of V6

sgo

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Can anyone tell me how much air a stock V6 sucks, (cu.ft/min ?)
as I want to use a non-stock intake/filter and would'nt want to restrict the flow.
 

fazz1977

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Do your math and you should be right. Generally speaking a larger air box, intake and filter will flow higher than stock. ALWAYS a good thing.
 

VT-565

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i think it is up around 650cfm @ 5000rpm...
very rare for an automotive air filter manufacturer to give you a cfm rating though.....good luck mate
 

jules

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a couple of quick calcs and i get 332 cfm at 5000 rpm for 3.8 litres at 100% volumetric efficiency. it's probably around 300 as it won't get 100% efficiency.
 

VT-565

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convert engine capacity to cubic feet and multiply by rpm=cfm
3800cc = 0.1341957cubic feet x 5000rpm = 670.978cfm at 100%VE
 

jules

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yeah but being a 4 stroke, it only takes in air every second stroke, so you need to half that and you'll get my figure :)
 

sgo

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Thanks all for the info. and the maths lesson.
(I did see some some filters in a shop that had a rating of 600cfm on the box.)
 

VT-565

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jules said:
yeah but being a 4 stroke, it only takes in air every second stroke, so you need to half that and you'll get my figure :)
ha ha ha....apologies.
need to up the caffiene intake.....however......1.suck 2.squeeze 3.bang 4.blow....thats down, up, down, up then intake on the next down. just for clarification
 

jules

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hey you're right.. i should have said it takes in air every second rev :)
 

sgo

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filter fitted

Well I ended up using a "Lynx ram-flow 600" filter and works fine, but:
One post in here mentioned their pod being noisy when cold but ok when the engine warmed up, and I thought that sounded unlikely, well that is exactly what my system does!
Also I didn't expect to notice any difference in driving, but it definitely is crisper and has a bit more "go".
Strange, but not complaining.
 
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