Port and polish

[niky]

Good day mga bossing curious lang po ano ang silbi ng pagport and polish ng engine.pareho lang ba to ng overhaul.ano advantages and disadvantages nya kung meron man.anong parts ang replace sa engine pagginagawa to.

For what car?

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Porting and polishing will require nothing more than a new headgasket. They can help unlock the potential of the engine, but should not be undertaken lightly.

Answer these questions:

1. Have you changed your air-filter?
2. Have you had a properly designed, long-tube air intake installed?
3. Have you installed the best possible intake manifold for your engine? (if Honda B-series... there are several intake manifolds that will fit)
4. Have you had a full exhaust installed?
5. Is it a professional job? Are your headers the best you can buy?
6. Have you changed your cams? Cam gears?
7. Have you installed an aftermarket tuning solution? Standalone EMS? Piggyback?
8. Has your engine been blueprinted and rebuilt?

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If you've answered yes to all of the above... then go ahead and PnP.

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There are some engines with very woeful head designs that can benefit from PnP right off the bat, but it's a process that requires opening up a perfectly useable engine for what is basically a top-overhaul (so add about 6-8k in labor on top of the labor for the PnP) and a process that cannot be undone.

For modern DOHC or SOHC Japanese engines, which already have decent headflow stock, any of the above modifications listed will be better bang-for-the-buck than PnP.