The BSFC chart thread (post 'em if you got 'em)

[Daox]

Here is the BSFC chart for Toyota's original 1ZZ-FE when they developed it back in 1998. Interesting how the lowest BSFC is so high in the rpm band. It would be really great to get updated info on the newer versions of the 1ZZ. I know there were some fairly descent changes to it over the years.

1ZZ-FE:
4 Cylinder
1.8L
16 Valve

[MetroMPG]

Interesting - what's the displacement?

EDIT: and valves/cyl?

[Daox]

Edited the post to include that info.

This post could probably be stickied too.

[MetroMPG]

Originally Posted by fabrio.

Could you tell me how I can find the bsfc of my car?

I'm not really sure. Persistent Google searches?

I wasn't able to find one for my engine when I first started looking. And the one Tasdrouille found for it wouldn't have come up in a Google search anyway - the relevant information was within the image itself, not the text.

[Daox]

I'm wondering, has anyone called up a dealer to see if they have this information avaliable? Obviously legacy info may be a problem, but at least current production maybe?

[holypaulie]

Where can I find BSFC map for civic 03 ?

[tasdrouille]

Here's for the ALH TDI engine 1999.5-2003

[MetroMPG]

Interesting - so far I think that one wins for peak efficiency at lowest RPM.

[TEiN]

Originally Posted by tasdrouille

Here's for the ALH TDI engine 1999.5-2003

So what can we glean from this map? Does it indicate that peak efficiency for acceleration would be at nearly full throttle (up to and including full throttle?) from ~1500 rpms to ~2200 rpm?

Could we say >75% TPS from 1500-2200 rpms would be best for the pulse portion of P&G?

[dcb]

You could say that, my guess is that since it looks like only half an "oval" that just floored between 1500-2200 RPM is more optimal. That little 197 dot is pretty close to the torque curve.