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Volumetric efficiency of 1.6td? by zaprzal on 04 Aug, 2008 10:28
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What is Volumetric efficiency of stock 1.6td, 1.6td with ported head, 1.6td with 1.9 head?
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#1 by dillenger1 on 04 Aug, 2008 11:00
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I thought that had to do with turbos?Ive never heard an engine rated in those terms.It may just be me though,im still a newb.
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#2 by gigaz2 on 04 Aug, 2008 12:10
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VE has to do with flow, cam and basically all the other physical dimensions of the engine.
if you change headers, VE changes.
I don't remember if the SAE paper adresses that, but its a good read nonetheless -
#3 by zaprzal on 05 Aug, 2008 04:29
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do you know how much is it for 1.6td with stock cam? It isn't constant, it change a bit in differen rpm range? right?
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#4 by gigaz2 on 05 Aug, 2008 06:23
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its a curve, follows the torque curve, but not quite.
I couldn't found any plots online, and don't recall seeing one for a 1.6, I'm pretty sure that if there is one, its on the SAE papers.
you can also calculate it from the torque VS BSFC curve I believe.
wiki:
http://en.wikipedia.org/wiki/Volumetric_efficiency
better:
http://tunertools.com/articles/volumetric-efficiency.asp