2270 Deck Height and CR, Pistons sitting proud of the deck, how many shims is too many shims? Options

[vjb206]

Hey folks! I have the bottom-end of my 2270 assembled and spinning freely. Thanks to all who helped me get to this point!

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To quickly recap: I bought the 2257 kit from AA Pistons (78mm stroke, 5.158" rods, etc.). And when I threw a P&C on for a test-fit last weekend, I immediately noticed the piston sitting proud of the deck height at TDC (negative deck) by about 2mm.

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Before I overreact, or buy the wrong stuff, I thought I'd ping the community...

1. Is this normal for a stroker set-up?
2. Can you stack multiple shims when getting up into the .06 >> .09 range?
3. (If no-stack) What's the best place to have custom shims cut?
4. I recall Jake saying using large shims requires lots of advance, anyone have experience here? What am I looking to adjust for upon start-up?

Once I figure out whether or not this is normal (I.E. verifying that I don't have to backtrack), I'll get into the CR questions (just waiting on clear plastic from Amazon so that I can measure my CC volume this weekend) (IMG:style_emoticons/default/biggrin.gif)

Thanks!

[technicalninja]

I'm planning on re-using the original Mahle cylinders and having them bored due to the posts I've seen on here.

The original German stuff is BETTER quality than what is available now. (with the exception of Nickies).

It will actually be MORE expensive to have my cylinders bored out than to just purchase new but I will be able to control P-B clearance better and will end up with a plateau honed surface.

The biggest area that the new cylinders seem to have trouble with is length.
The original German stuff looks to have a variation in length under .001" and the Chinese junk seems to run =/- .005.

On an engine with P to CYL head clearance above .065 this will not matter at all.

I build engines with as tight a quench number (p-cyl or "deck") as I can get away with.

I'll be under .040 on cast and .045 on forged and a .005 variation means DESTRUCTION of engine.

So I'm starting with used parts that will cost more to prepare than just buying new.