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Case Tractors Discussion Forum
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David Brown squish height

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huskarl

05-08-2006 06:29:26




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I have a Case 1394 with the deck milled down so that the pistons are now 0.030" above the deck.

This is a 4-cylinder 219 CID engine with a turbocharger. It develops 77 HP.

My gasket thickness is 0.042, which would leave me 0.012 of squish at the top. This can't be enough, can it?

I'm trying to use online compression calculators to find the exact squish I need, but isn't there just a number I could use? Like 0.030" above the piston top?

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Baz

05-09-2006 00:21:24




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 Re: David Brown squish height in reply to huskarl, 05-08-2006 06:29:26  
The piston height above the block is a maximum of 0.013" Just skim the tops of your pistons to suit. I have never worried about the valve pockets.
The compression ratio is 17:1

Barry.



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huskarl

05-09-2006 06:13:36




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 Re: David Brown squish height in reply to Baz, 05-09-2006 00:21:24  
the ratio given in my I&T book is 16:1, which seems right since the measured ratio became 17:1 after milling.

I can restore compression to 16:1 by

using a 0.060" gasket that will give me 0.028" squish.

or by using the 0.042" gasket and skimming the pistons squish would be 0.029".

Any reason to prefer one over the other ?



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