The significance of 3.8 liters
05-11-2004, 06:52 PM
#12
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those oil pans....I hope you set him straight. Displacement is the amount of space the cylinders make when they move up and down.
05-11-2004, 08:57 PM
#14
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Originally Posted by Spiral
For example, a kid at my school said he is going to make his neon a 7 liter by adding a really big oil pan ?!?!? I was impressed by that statement none the less.
Remember
Displacement = (Stroke * (Pi) * (Bore/2)^2)* Number of Cylinders
Remember
Displacement = (Stroke * (Pi) * (Bore/2)^2)* Number of Cylinders
j/k
Displacement is more-or-less equal to the volume of combustible air/fuel mixture ingested during one cycle of all the cylinders. Thus, a four-stroke engine ingests its displacement in combustible mixture in two engine revolutions, while a two-stroke engine needs only one engine revolution to do so.
05-11-2004, 09:07 PM
#15
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Originally Posted by Spiral
I still dont understand why they use the imperial system and metic together when showing the displacement. Any other country represents the engine in CC and liters, but no, in America we need to do CI and liters. But none the less you would be surprised how many people out there talk about how much displacement they have without even knowing what the displacement is measuring. For example, a kid at my school said he is going to make his neon a 7 liter by adding a really big oil pan ?!?!? I was impressed by that statement none the less.
Remember
Displacement = (Stroke * (Pi) * (Bore/2)^2)* Number of Cylinders
Remember
Displacement = (Stroke * (Pi) * (Bore/2)^2)* Number of Cylinders
05-11-2004, 09:19 PM
#18
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Originally Posted by T-Keith
Actually we use CCs too. What do you think 3800 means. Technically we don't use CI anymore either, no US manufactorer has for years. People still cling to the CID because we still use Engligh/Standard measurements for everything else.
3800 is actually a rounded number... Just GM'* way of setting apart the xx00'* over the x.xL engines. 3400, 3800, 3900, etc, over 3.4 3.8, 3.9...Before it'* asked, compression ratio is the displacement of the combustion chamber @ BDC (bottom dead center), over TDC (top dead center) It shows how much the stroke of the piston compresses the air and fuel in the cylinder. The more you compress, the harder it is to control, and keep good ignition timing, which is why high compression or boosted cars, need high octane!
05-12-2004, 02:46 AM
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I have family in Germany and its a pain in the ARSE to convert their hp/tq systems to ours.
"Your Volkwagon gets 115kw to the parsec in one photon?....Ah, thats fast....I think. :? "
"Your Volkwagon gets 115kw to the parsec in one photon?....Ah, thats fast....I think. :? "