Wiseco Low Compression Piston Changes In Cc's
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QUOTE (Dmitry @ Dec 14 2005, 08:15 AM)
no really!
only bore and stroke influence on cylinder displacement. it doesn't matter what shape is pistons.
with 83 mm bore (on 2.0 engine with 93.5 stroke) you will get 2022.5 cc.
Changine head gasket thickness and/or pistons dish will influence ONLY in compression ratio.
only bore and stroke influence on cylinder displacement. it doesn't matter what shape is pistons.
with 83 mm bore (on 2.0 engine with 93.5 stroke) you will get 2022.5 cc.
Changine head gasket thickness and/or pistons dish will influence ONLY in compression ratio.
that is right actually. the dished out area wont have any affect on displacement.
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Yes it will. Displacement, no matter how you measure it, is a measurement of the VOLUME in the cylinder. If the Piston top is lowered/dished, then you are creating more volume in the cylinder above that piston. Right? So even if the stroke and radius doesn't change, you are still adding volume to the cylinder by creating a dish.
Ex. If you take one cylinder with a flat top piston, and another cylinder with a dished piston, and then poured water into each. Which one do you think will hold more water? Duh! The dished one. Therefore, it counts as part of the Volume.
Ex. If you take one cylinder with a flat top piston, and another cylinder with a dished piston, and then poured water into each. Which one do you think will hold more water? Duh! The dished one. Therefore, it counts as part of the Volume.
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no no and again no nana.gif
cylinder volume is volume without combustion chamber! and with dished pistons you increase ony volume of combustion chamber and not cylinder volume.
cylinder volume is measured from bottom dead point to top dead point, if you have dished pistons dead points will be both lower.
cylinder volume is volume without combustion chamber! and with dished pistons you increase ony volume of combustion chamber and not cylinder volume.
cylinder volume is measured from bottom dead point to top dead point, if you have dished pistons dead points will be both lower.
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yeah, nevermind. displacement is not the measure of volume at bdc. its the amount of volume displaced by the moving piston. a dished piston will displace the same amount of volume as a flat one, because the dish is present at bdc and tdc, leaving displacement unchanged.
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QUOTE (tibby01 @ Dec 14 2005, 11:09 PM)
yeah, nevermind. displacement is not the measure of volume at bdc. its the amount of volume displaced by the moving piston. a dished piston will displace the same amount of volume as a flat one, because the dish is present at bdc and tdc, leaving displacement unchanged.
exactly smile.gif