Yes , my head is hanging in shame because i REALLY do not know the answer to this so , here it goes .
We hear about our cars having 5.0 or 4.6 litre motors but , WHAT DOES ALL THIS LITRE STUFF MEAN ? I am used to things like CUBIC INCHES and this metric stuff is just making it into my overaged brain . Any explanation wouild be helpfull but keep it simple ... I'm on holidays .
Litre is a size that is determined by calculating the volume of each cylinder and multiplying that value by the number of cylinders the engine has.
Sorry but now I am REALLY confused . When you say the volume of each cylinder ... what are you refering to as far a mesuring tool is concerned and what is the measuring unit being used to make this calculaction ?
Its how much volum (or room) for air/fuel mixture the engine has. Its the addition of cylender volume and volume in the heads and intake. Its a big long math problem. When you bore your cylenders like say 30 over (.030 inches over the standard radius or diameter size of the sleve, .100 max), or port and polish heads and intake, or replace you pistion tops with a differnt style you can drasticly chang you liter size. Example, I have a 6.9 (or 7.0 liter) 429 cubic inche engine, its bored .035" over, its ported and polished heads and intake are hard to measure so I leave there litres standard, exhaust has no bearing, It has flat top pistions and opened valves for intake, After the math is done, my 429 CID is about 482 CID. To find the rough estimate for the volume measurments of a V8 multiply the liters by 61.7 for cubics or divide the cubics by 61.7 for litre, round to the nearest tenth. I'm sure some one will say it has nothing to do with intake and heads but then you talk to the ford engineers I play around with.
Like LunaticSVT said, you measure the volume (how much space it contains) of each cilinder in "cc" (cubic centimers) then you muliply that by the amount of cilinders.
So if one cilinder in a V8 is 500cc then you multiply that by 8, this equals 4000cc.
1000 cc = 1 Litre, thus 4000cc = 4 Litre.
Divide 4000cc by 16.387064 (2.54x2.54x2.54) and you will get your answer in cubic inches, 244ci
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