ano advantage ng more valves in engine?

**buknoy2002** · December 11th, 2004 10:40 AM

example a carb engine na 1.3 lliter,
one is 12 valve and the other is 16 valve

whats the advantage?
better mileage? more hp? more torque?

thnx in advance

**yebo** · December 11th, 2004 11:33 AM

carb na 1.3? comparing ka ng corolla xl and mazda 323 ano?

well, answer is all of the above. generally speaking less pumping work and better engine breathing mean more power, torque and better mileage.

**hagiber** · December 11th, 2004 11:49 AM

Bakit yung ibang highperformance Mercedes SL models ay 3 valves per cylinder lang?

**van_wilder** · December 11th, 2004 11:53 AM

depende rin kung anong made... for example benz is 3 valves lang per cylinder pero masmalakas siya... depende... bigay ka ng specific example...

**hagiber** · December 11th, 2004 12:20 PM

I think the Merc SL55AMG is a 3valve per cylinder machine... just wondering why Merc doesnt use 4 valves ?

**van_wilder** · December 11th, 2004 12:33 PM

i dont know... pagka-alam ko handmade kasi at designed yun makina ng 3valves per cylinder ata...

**ian_rex** · December 11th, 2004 01:15 PM

ok. put it this way, less is more. more is less. less valve means more mileage. also, less horsepower since less fuel is contained in the chamber. consequently more is less. more valves means less mileage, but more horsepower. self-explanatory, since more fuel is burned thus more energy is produced.

as in the case of mercedes, 3V / cyl? well, check out its displacement and internal attributes such as supercharger or turbocharger, it is well compensated.

hope my point is taken. :D

**5Speed** · December 11th, 2004 01:21 PM

point taken.... I agree w/ you Ian....

**jojo_mouth2** · December 11th, 2004 10:05 PM

Originally posted by buknoy2002
example a carb engine na 1.3 lliter,
one is 12 valve and the other is 16 valve

whats the advantage?
better mileage? more hp? more torque?

thnx in advance

3 valves/ cyl engine and 4 vales/ cyl has the same 2 intake valves. therefore same volume of fuel&air mixture that goes to the chamber. advantage lang 4 valves/cyl is it has 2 exhaust valves meaning guaranteed na lalabas almost lahat (if not all) ng burned gases from the combustion chamber after firing, result would be- the volume of air&fuel mixture in the next cycle is close to 100%. then more power is produce...

**hagiber** · December 12th, 2004 09:34 PM

Siguro yung single exhaust valve ng 3valve engines is also a little larger in size than the intake valves.. it might improve the reliability of the engine since fewer yung moving parts :-)