Chris,
I won't try to guess at recalculating your figures, but I have an engine
builders guide that tells you how to compute for compression ratios. If you
like, I will copy and send it to you.
Rich - Ashburn, VA
-----Original Message-----
From: chris@slowcar.net [mailto:chris@slowcar.net]
Sent: Wednesday, July 18, 2001 4:23 PM
To: dakota-truck@buffnet.net
Subject: DML: Piston Dish Math
If anyone has a couple of moments would they mind telling me if
my math looks right?
This is for a 408 iron headed stroker, shooting for 9.3-9.5:1 compression
Bore Size: 4.03"
Piston Size: 4.026"
Stroke: 4"
Deck Height: 0.005"
Piston Ring Land: 0.3"
Piston Dome/Dish: 35 cc DISH PISTON
Head Gasket Bore: 4.18"
Head Gasket Height: 0.039"
Cylinder Head Volume: 55 cc
Cylinder Volume: 836.082 cc
Gasket Volume: 8.77 cc
Deck Volume: 1.045 cc
Total Volume: 936.021 cc
Engine Displacement: 408.17 cid
And I get a Compression Ratio of 9.37:1.
So I need to go with a 35 cc Dish? (heads are 55cc, just had them CC'd by
the porter).
Thanks,
Chris Bennight
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