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2000 cc (= 2.0 litre)?
2300 cc (= 2.3 litre)?
Those are the volumes displaced by the up and down movement of the pistons.
Volume of a cylinder = area X height of cylinder
Area = Pi X Radius squared or 3.14 X 2025("R" of 90mm bore squared)
Volume= area (6358mm) X height (or stroke 78mm for 2.0 engine)= 496cc
Times 4 for 4 cylinders = 1985cc for 2.0L
replace 90mm stroke for 2.3L engine (2290cc)
Just thought I'd share that.
 

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Discussion Starter · #4 ·
Those are the volumes displaced by the up and down movement of the pistons.
Volume of a cylinder = area X height of cylinder
Area = Pi X Radius squared or 3.14 X 2025("R" of 90mm bore squared)
Volume= area (6358mm) X height (or stroke 78mm for 2.0 engine)= 496cc
Times 4 for 4 cylinders = 1985cc for 2.0L
replace 90mm stroke for 2.3L engine (2290cc)
Just thought I'd share that.
yes, thats why im after it, that all calculates the swept area of the bore, then i need the clearance volume aka the chamber volume, to calculate compression ratio so i can play with some ideas.
 

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yes, thats why im after it, that all calculates the swept area of the bore, then i need the clearance volume aka the chamber volume, to calculate compression ratio so i can play with some ideas.
Kinda tough to calculate compression ratio, but I guess you could take the listed stock compression ratio and then figure what the volumme (cc) must be after subtracting the swept displacement.
Use the two "knowns" to calculate the unknown.
If you don't mind, what ideas are you gonna play with?
 

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just want to find a way to dial in the CR i want
Not sure how (or why) you'd lower it easily.
"Milling" the head will raise CR, just check valve piston clearance. We used to use clay on top of the piston with the "milled" head back on and torqued down.
manually rotate the engine a few revolutions.
Then take the head off and measure the thickness of the clay.
The problem with this is our engines have hydraulic lifters that can and will pump down.
 
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