Author Topic: Volumetric efficiency of 1.6td? (Read 2087 times)

zaprzal · « **on:** August 04, 2008, 01:28:07 pm »

What is Volumetric efficiency of stock 1.6td, 1.6td with ported head, 1.6td with 1.9 head?

dillenger1 · « **Reply #1 on:** August 04, 2008, 02:00:02 pm »

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.

gigaz2 · « **Reply #2 on:** August 04, 2008, 03:10:23 pm »

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

zaprzal · « **Reply #3 on:** August 05, 2008, 07:29:51 am »

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?

gigaz2 · « **Reply #4 on:** August 05, 2008, 09:23:59 am »

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