port & polish, (pros & cons)

[beetle]

need infos po. tnx.

[ebbfolls]

There are three (3) reasons to port a head. One is to reshape the ports to achieve laminar flow, another is to smoothen the sharp irregularities in the path of the air flow, and third is to enlarge the ports to match larger valves and/or intake runners. Usually, porting also involves the polishing of the ports and the combustion chamber. The reason for polishing is two-fold: one is to enhance airflow and two is to minimize the accumulation of carbon deposits.

For DIY'ers, the porting job should only be limited to the smoothing out of the airflow through the ports, i.e., the rounding off of sharp edges. After the ports are smoothed out, polishing should be done to minimize carbon buildup and to further enhance flow efficiency.

[wildthing]

cons, pag palpak ang trumabaho, maaari niyang mabutas ang engine up to the water jacket

[jeff108]

try matonetics ok dun medjo mahal nga lang

[speedyfix]

the number one thing to remember here is not to overdo it. there are limitations to the work that should be done to the head depending on what has been done to the engine.

turbo and naturally aspirated engines will need different port work.

[caps5625]

try matonetics ok dun medjo mahal nga lang

san po to?

[vinj]

Question: will the sought-after effects of PnP still be similar with the newer engines nowadays as compared with the old engines of yesteryear?

[woodfire]

Question: will the sought-after effects of PnP still be similar with the newer engines nowadays as compared with the old engines of yesteryear?

Good Question! With the advent of CNC machining of modern engines, even the lower-end engines are flow efficient already. PnP will be more effective with old engines that require headworks and modifications.

[CLAVEL3699]

mga how much yung budget for this?

at ano yung mga stages na tinatawag?

[FrankDrebin]

san po to?

Sa Banaue QC bossing. From DelMonte pagkalagpas ng China Town Rest. at bago mag-Chinese na Drugstore (Nakalimutan ko na yung name pero bago mag-Atok st.) Puro China ba?