DIY: Port and Polish

[BB DC294 NHCT]

i threw my head into the parts cleaner bin and cleaned the card deposits.

[YatesTunes]

There is no need to polish the ports, fuel needs to hit the ruff port so that it can jump around and mix with the air, thats how power is made! Removing casting defects is about all you need to do.

He's right. Turbulence is needed to propagate atomization. The "polishing" term is from the 60's and 70's when sand casting was horrible.

i disagree..fuel i misted into the port,not just sprayed.so it mixes as its in cycle

You're wrong, especially for using words like "misted" and "mixes in cycle".

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And again, dude. Not to burst your bubble or anything but a port and polish is a hit or miss deal. Hogging out a port and checking the volume doesn't work, adding the vacuum makes even less sense without a manometer. Increasing the ports inner diameter while reducing velocity and turbulence just makes for a shit head... except maybe on rotaries, but rotaries are garbage. That's why it costs upwards of 1000$ for a CNC porting job, it's a science. Most of these guys wouldn't even benefit from any port work regardless. At least buy the porting kit from MAC tools and save your hands some of that sandpaper labor.

[Bsickteen]

YatesTunes really knows the deal, thanks for backing me up man.

[civic8891]

port and polish is such a tricky business like everyone says and i didnt realize it til i read sooo much about it, what i do doesnt hurt the heads but prob doesnt do much for them either., idk gotta keep pluging away on this

[ridehard]

injen782 - thanks just for that ill do a head for free for you!!! hit m,e up 609-661-8314

jdmdikk and bones4 thanks your two let me know if your need help on anything i mean it

wat do u charge dude thatshit looks nice lit me know