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2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

What do we gain with a port and polish intake manifold???

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Old Oct 3, 2011 | 11:50 AM
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BIG SS TC
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What do we gain with a port and polish intake manifold???
My landlord(nice guy) owns an Auto machine shope and it got me wondering what a port and polish would gain??? also what about porting the exhaust on the turbo???? thanks guys
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Old Oct 3, 2011 | 12:24 PM
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Horsepower! Did I win?
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Old Oct 3, 2011 | 12:32 PM
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I wouldn't do the intake manifold but the TB will make a minimal gain.
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Old Oct 3, 2011 | 01:43 PM
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Originally Posted by CudaJoe
Horsepower! Did I win?

maybe lol
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Old Oct 3, 2011 | 01:43 PM
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I believe somebody did do it but can't remember who and they said the gains were very minimal
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Old Oct 3, 2011 | 01:45 PM
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I don't see the IM or TB being a big restriction on stock turbo. No set hp, it will have diff gains depending on your initial HP.
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Old Oct 3, 2011 | 03:21 PM
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what about the head???
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Old Oct 3, 2011 | 03:33 PM
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porting a head almost always has gains
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Old Oct 3, 2011 | 05:21 PM
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Originally Posted by BIG SS TC
what about the head???
DI heads must be ported very carefully, I would only trust ZZP to do this. A local had the head ported and he was having so much issues with it that he bought a new stock head.
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Old Oct 7, 2011 | 07:44 AM
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Im working on my extra head now. All I did was smooth out the short turn radius under the valve seats and smooth out the machine marks and do a light port match on the intake side with my spare manifold. Basically smoothed everything out without removeing to much material. Also clearanced the topside for the Super Tech Springs
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Old Oct 7, 2011 | 09:44 AM
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not bad i wanted to put the spings in at the same time
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Old Oct 7, 2011 | 10:43 AM
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I would clean up the intake side and then gasket match the exhaust side. When you do the exhaust side, match the manifold as well!
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Old Oct 7, 2011 | 10:46 AM
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I got it done by BYT and there are minimal gains. I got it done while cleaning out the intake manifold
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Old Oct 9, 2011 | 10:10 AM
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I'd polish the exhaust side before I touched the intake side, it doesn't take much work to increase air flow variation between cylinders and you do not want that.
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Old Oct 9, 2011 | 10:46 AM
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Didn't ZZP try this and found out that it's not worth it because of the high possibility of messing up airflow on a DI engine?
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Old Oct 9, 2011 | 11:43 AM
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They offer a ported head package They said it has to be done a certain way, which I get after looking at it. Which I why I suggested leaving the intake side alone and opening up the tiny exhaust side.
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