Piston/deck height
☠☣☢ Semper Ebrius ☢☣☠
Joined: Jun 2001
Posts: 83,301
Likes: 4
From: Virginia
Cruise-In IV-V-VI-VII Veteran
St. Jude's Donor '06
Originally Posted by SpinMonster
Do the pistons come out of the block as with the LS1/6....if so how much?
The chamber volume is 64.45cc and the displacement per cylinder is 745.451829 cc.
The compression ratio is 10.9:1. So the uncompressed volume is obviously the total of the two plus (4*pi)*x where x is the gasket thickness.
The total volume not counting the gasket is 809.901829 cc. One 10.9th of this is 74.30292 cc. Or, in other words, more than the chamber volume. The extra 9.85292 cc would require a gasket of at least 0.78 inches in thickness with a 4 inch bore in order for the piston to have gone past the top of the block.
This is all guesses, however, since I don't know the gasket thickness and can't figure it into the compression calculation.
Unless I'm missing something.
Edit: ci corrected to cc
Last edited by Scissors; Apr 15, 2005 at 04:38 PM.
Le Mans Master
Joined: Aug 2000
Posts: 5,529
Likes: 1,943
From: Austin Texas
Originally Posted by Scissors
I don't believe so.
The chamber volume is 64.45cc and the displacement per cylinder is 745.451829 cc.
The compression ratio is 10.9:1. So the uncompressed volume is obviously the total of the two plus (4*pi)*x where x is the gasket thickness.
The total volume not counting the gasket is 809.901829 ci. One 10.9th of this is 74.30292 ci. Or, in other words, more than the chamber volume. The extra 9.85292 ci would require a gasket of at least 0.78 inches in thickness with a 4 inch bore in order for the piston to have gone past the top of the block.
This is all guesses, however, since I don't know the gasket thickness and can't figure it into the compression calculation.
Unless I'm missing something.
The chamber volume is 64.45cc and the displacement per cylinder is 745.451829 cc.
The compression ratio is 10.9:1. So the uncompressed volume is obviously the total of the two plus (4*pi)*x where x is the gasket thickness.
The total volume not counting the gasket is 809.901829 ci. One 10.9th of this is 74.30292 ci. Or, in other words, more than the chamber volume. The extra 9.85292 ci would require a gasket of at least 0.78 inches in thickness with a 4 inch bore in order for the piston to have gone past the top of the block.
This is all guesses, however, since I don't know the gasket thickness and can't figure it into the compression calculation.
Unless I'm missing something.
Make the "9.85292 ci" into "9.85292 cc" and
I believe you get 0.78mm as the piston below cylinder head bottom at TDC.
☠☣☢ Semper Ebrius ☢☣☠
Joined: Jun 2001
Posts: 83,301
Likes: 4
From: Virginia
Cruise-In IV-V-VI-VII Veteran
St. Jude's Donor '06
Originally Posted by MitchAlsup
Make the "809.901829 ci" into "809.901829 cc" and
Make the "9.85292 ci" into "9.85292 cc" and
I believe you get 0.78mm as the piston below cylinder head bottom at TDC.
Make the "9.85292 ci" into "9.85292 cc" and
I believe you get 0.78mm as the piston below cylinder head bottom at TDC.
What he said.
(Damn, can't believe I got the math right but screwed up the units.
)
