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The answer depends on what other modifications are performed on the engine. A completely stock engine with "ported & polished" heads might run worse than factory, depending on how much the ports are enlarged, what shape they are ported to, how smooth they are polished etc... To receive the benefit of a good port job, there needs to be a reason to do so, such as a larger (more lift) cam, larger carburetor (or larger throttle body), more compression (different pistons), or valve size (larger diameter or reduced stem size) etc.. This is true for any piston powered 4 stroke engine. Sorry to be vague, but this is a general question.
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∙ 15y ago
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How can you make a 2-stroke 125cc dirt bike go faster?
put an expansion chamber on it You can install a big bore kit, shave the heads, pro cut the piston, and have it ported and polished.
Should two 12 inch insignia sub speakers be ported?
i love ported boxes because it's less wear and tear on the subs because the air isn't pushing against the sub, but leaving the port. so i found out that you get a louder, better performance with ported boxes.
How much horse power does a 103 harley Davidson engine have?
2007 Road King 103 inch motor with heavy breather d-d 2 into1 se255 cams stock heads flowed and ported stage b2 race kit 10.0 to 1 also t hundermax closed loop computer results 98.2 hp 102.3 ft lbs hope this helps hotrod 1200.
What is the best enclosure for Alpine Type R 12's?
a ported box is better i have tried a sealed as well as ported and the ported dilivers far more power
How is ported on the browning gold shotgun different on a browning silver shotgun.?
Depends on what application it was ported for and by what process.
Should a 350 have vacuum to distributor at idle?
NO. It needs ported vacuum. This means that it should only have vacuum on it when you bring the rpms up off of adle.
What is the value of colt 45 caliber government model 1911 serial 352933 in excellent condition?
This gun was polished and ported by famed gunsmith Richard Heine -- and his name is stamped into the barrel. Comes with 4-5 genuine colt mags. Fewer than 500 rounds have been fired with it.
Is a sealed or ported box better for kicker comp subs and would a 1000 watt pyle amp be good for these subs?
a ported box will hit the lows better than a sealed box. and they will hit harder.. but a ported box will be louder.
What is a ported barrel?
A barrel with ports cut in it.
Is a sealed box better than a ported box?
It depends on what your looking for a ported box gives off more bass but a sealed box is a clearer sound
How much hp does a 350 Chevy have 30 over 292 cam 64cc pro comp heads ported and polished flat top pistons stock stroke roller rockers and 780 double pumper?
400 hp give or take..my friend has a machine shop and has very good luck with pro comp heads..
That would be dependent on your device. It will show any video signal ported to the HDMI port.?
That would be dependent on your device. It will show any video signal ported to the HDMI port.
