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working out compression ratios

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working out compression ratios
JonE Offline
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#3
29-09-2018, 06:28 PM
I'll let you know when I get the naffing head off!

I'm also advised that if at TDC the pistons are level with the top of the block (ie deck height is zero) then compression ratio is:

(Cylinder swept volume + combustion chamber volume + gasket volume) divided by
(combustion chamber volume + gasket volume)

So with the 3 from Chris's post...

193.5 + 30 + 3
30+3

is a tad higher at 6.86 : 1 (standard LC head is 5:1)

So if my pistons are shy of the top, that is going to bring it down a touch, right? I'll be hoping they are...
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Messages In This Thread
working out compression ratios - by JonE - 29-09-2018, 02:20 PM
RE: working out compression ratios - by Chris KC - 29-09-2018, 03:35 PM
RE: working out compression ratios - by JonE - 29-09-2018, 06:28 PM
RE: working out compression ratios - by jansens - 29-09-2018, 10:43 PM
RE: working out compression ratios - by jansens - 30-09-2018, 07:12 AM
RE: working out compression ratios - by JonE - 08-10-2018, 08:28 PM
RE: working out compression ratios - by jansens - 30-09-2018, 11:14 AM
RE: working out compression ratios - by JonE - 30-09-2018, 12:34 PM
RE: working out compression ratios - by jansens - 30-09-2018, 08:57 PM
RE: working out compression ratios - by JonE - 01-10-2018, 08:59 PM
RE: working out compression ratios - by GK5268 - 08-10-2018, 10:00 PM
RE: working out compression ratios - by JonE - 09-10-2018, 09:39 AM
RE: working out compression ratios - by JonE - 10-10-2018, 08:53 PM
RE: working out compression ratios - by JonE - 12-10-2018, 11:04 AM
RE: working out compression ratios - by JonE - 11-10-2018, 07:36 AM
RE: working out compression ratios - by jansens - 11-10-2018, 08:14 AM
RE: working out compression ratios - by JonE - 11-10-2018, 10:00 AM
RE: working out compression ratios - by jansens - 11-10-2018, 10:17 AM
RE: working out compression ratios - by Dave Mann - 11-10-2018, 10:23 AM
RE: working out compression ratios - by Dave Mann - 11-10-2018, 08:30 PM

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