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-   -   Compression Ratio of a 1.6? (https://www.miataturbo.net/engine-performance-56/compression-ratio-1-6-a-57579/)

Techsalvager 05-05-2011 06:36 PM

Compression Ratio of a 1.6?
 
Does anyone happen to know the Dynamic Compression Ratio of the 1.6l motor (manual trans motor)?

nitrodann 05-06-2011 02:12 AM

Dynamic compression ratio is very specific.

The static compression is 9.4 where as the dynamic ratio changes based on tune, rpm, throttle opening boost. basically Dynamic compression is the static ratio multiplied by the map value making it into the cylinder (in kpa) divided by 101.

Dann

Techsalvager 05-08-2011 12:09 PM

8.21:1 for DCR

nitrodann 05-09-2011 09:23 PM

Sorry how did you eventually come up with that conclusion, Either your asking for a different thing to what I thought or ive got something way wrong here.

Dann

Techsalvager 05-09-2011 09:49 PM

http://www.wallaceracing.com/dynamic-cr.php

I did at 200ft alt
Boost pressure doesn't seem to change DCR, inlet valve closing ABDC does by a lot.
Sure its DCR for reason, and this probably at one point


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