Compression Ratio, Will I be able to tell the difference? Options

[sdoolin]

Rebuilding(ish) my 2056. On my first build I was able to achieve a compression ratio of very nearly 9.0:1. With this build, I am having to add .020 spacers below the jugs to get any measurable deck height in the jugs. I am calculating a compression ratio of 8.6:1.

Will I notice the loss in compression ratio?

[technicalninja]

Measured deck height in the jug, with an .020 spacer below the jug, is just at .6mm. Add the 1mm in the HAM heads (do NOT start a separate conversation about this) and you get 1.6mm. Which is a lot. Without the .020 spacer the pistons rise above the top of the jugs. Which scares me.

No fire rings in the heads.

Please post a picture of the combustion chamber of those HAM heads.

You're either running .024" deck height OR .064"

At .064" you are leaving 5-10% of the obtainable performance on the table AND the engine will be MORE prone to detonation.
You're building a turd. (IMG:style_emoticons/default/stromberg.gif)

At .024" it will most likely disintegrate directly after start up... (IMG:style_emoticons/default/blowup.gif)

And if you are not open to the assistance of others regarding everything about this why in the world did you post at all?

If I had $$$ HAM heads and I was unsure of what I was doing I'd want as much feedback as possible.

Both me and the Hawk are serious engine builders, we both know what we are doing, sometimes we disagree but it is ALWAYS about minor things.

If you DON"T want help...
(IMG:style_emoticons/default/ninja.gif)