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  • #31
    [quote=GT-R]
    Originally posted by "Eco_JUNK":3d20q5p5

    No but seriously. If you slapped a turbo on there... you would sooner or later have the desire to port the heads.
    Negative. The turbo does all the work. Any gains by porting the heads would be extremely minimal.[/quote:3d20q5p5]


    ...... Im sorry I have to disagree. More air coming into the engine is going to increase the need to smooth out all the rough edges of the stock heads, as well as increasing the sizes of the intake an exhaust ports. You want to jam as much air in as fast as possible, and expel as much gas as quickly as possible. Theres no way to reach the engines full potential on stock heads. Plain and simple. GM wouldn't design them that way because of fuel comsumption issues.
    2007 G5 Base Model
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    • #32
      [quote=Eco_JUNK][quote="GT-R":2ssjx4az]
      Originally posted by "Eco_JUNK":2ssjx4az

      No but seriously. If you slapped a turbo on there... you would sooner or later have the desire to port the heads.
      Negative. The turbo does all the work. Any gains by porting the heads would be extremely minimal.[/quote:2ssjx4az]


      ...... Im sorry I have to disagree. More air coming into the engine is going to increase the need to smooth out all the rough edges of the stock heads, as well as increasing the sizes of the intake an exhaust ports. You want to jam as much air in as fast as possible, and expel as much gas as quickly as possible. Theres no way to reach the engines full potential on stock heads. Plain and simple. GM wouldn't design them that way because of fuel comsumption issues.[/quote:2ssjx4az]

      I think what GT-R's trying to say is that there would be an overlap in performance gains, as the turbo would do MOST of what a port polish would do, by forcing air in regardless of port size. Port polishing on top of turboing would be even better, but the gain would not be as significant as it would on a N/A engine.

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      • #33
        That is very true, porting heads benefits N/A motors a lot more than a turbo engine, but I wouldn't go so far as to say gains would be minimal. As if anyone has turbocharged and ported the heads on the 3.5L G6 yet.
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        • #34
          Originally posted by Eco_JUNK
          That is very true, porting heads benefits N/A motors a lot more than a turbo engine, but I wouldn't go so far as to say gains would be minimal. As if anyone has turbocharged and ported the heads on the 3.5L G6 yet.
          Well, we're pretty much ALL speculating here.

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          • #35
            Ben does have a flow bench.. he knows all about porting and polishing 60 degree v6 engine parts and is who i plan to purchase from when i do my turbo 3400/3500 (possibly stroker) hybrid... just so that you know im also hoping for an easy 400hp
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            • #36
              Originally posted by El_Diablo
              Ben does have a flow bench.. he knows all about porting and polishing 60 degree v6 engine parts and is who i plan to purchase from when i do my turbo 3400/3500 (possibly stroker) hybrid... just so that you know im also hoping for an easy 400hp
              With what transmission/driveline?
              Originally posted by colinpeddle
              They'll begin missing us soon. Once all the threads stay on topic thru 14 pages... oh they'll miss us, our wit and our insane ability to wander off topic so effortlessly. Some day, a g5er will stop and say

              Go tell the G6ers, passerby,
              That here, by G6er law, we lie
              Stranger, tell the G6ers that we behaved as they would wish us to, and are buried here.
              THIS IS G6PERFORMANCE!!!!!!!!!!!!!!

              KJHLKAJDHLKJHLKAAHHHHHHHHHHHH<- battle cry.

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              • #37
                Originally posted by Eco_JUNK
                That is very true, porting heads benefits N/A motors a lot more than a turbo engine, but I wouldn't go so far as to say gains would be minimal. As if anyone has turbocharged and ported the heads on the 3.5L G6 yet.
                It's a proven fact, that on a turbo or supercharged engine, porting of the intake or heads will yield minimal gains. Either turbos or superchargers force air into the engine, therefore the effects of porting or polishing are not very noticeable. Now, you can alter the intake or head design to change where within the rpms max hp, and torque will be generated.

                On an N/A most definitely, since the engine itself has to draw the air into the combustion chamber, and the smoothest and straightest path creates more efficiency, which in turn, creates the opportunity to make more power.

                Again, let me stress the fact, that with either a turbo or a supercharger making lots of power is not the issue here. Keeping the power within a usable range of the drivetrain is.

                Making more power with a turbo or supercharger is fairly easy. Play with the wastegate, use a good intercooler, or just increase the size of the compressor.

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                • #38
                  Originally posted by carsuperfreak
                  Originally posted by El_Diablo
                  Ben does have a flow bench.. he knows all about porting and polishing 60 degree v6 engine parts and is who i plan to purchase from when i do my turbo 3400/3500 (possibly stroker) hybrid... just so that you know im also hoping for an easy 400hp
                  With what transmission/driveline?

                  Kaaaaaaaaaaabooooooom Not on a stock G6 drivetrain

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                  • #39
                    [quote=GT-R]
                    Originally posted by carsuperfreak
                    Originally posted by "El_Diablo":2xophg57
                    Ben does have a flow bench.. he knows all about porting and polishing 60 degree v6 engine parts and is who i plan to purchase from when i do my turbo 3400/3500 (possibly stroker) hybrid... just so that you know im also hoping for an easy 400hp
                    With what transmission/driveline?

                    Kaaaaaaaaaaabooooooom Not on a stock G6 drivetrain[/quote:2xophg57]

                    Not gonna happen! I'm only aiming for mid-3s and I need new internals for my tranny. Not to mention the torque steer is gonna be enough as it is!

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                    • #40
                      [quote=PrimeGTP]
                      Originally posted by GT-R
                      Originally posted by carsuperfreak
                      Originally posted by "El_Diablo":3ezaqgu8
                      Ben does have a flow bench.. he knows all about porting and polishing 60 degree v6 engine parts and is who i plan to purchase from when i do my turbo 3400/3500 (possibly stroker) hybrid... just so that you know im also hoping for an easy 400hp
                      With what transmission/driveline?

                      Kaaaaaaaaaaabooooooom Not on a stock G6 drivetrain
                      Not gonna happen! I'm only aiming for mid-3s and I need new internals for my tranny. Not to mention the torque steer is gonna be enough as it is![/quote:3ezaqgu8]

                      Mid-3's, Bit ambitious don't you think... I guess maybe solid fuel rocket might work.... that would definitely require a tranny overhaul though
                      2006 6.0 LS2 GTO Metallic Black
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                      • #41
                        [quote=PwrG6Guy]
                        Originally posted by PrimeGTP
                        Originally posted by GT-R
                        Originally posted by carsuperfreak
                        Originally posted by "El_Diablo":3hjitigh
                        Ben does have a flow bench.. he knows all about porting and polishing 60 degree v6 engine parts and is who i plan to purchase from when i do my turbo 3400/3500 (possibly stroker) hybrid... just so that you know im also hoping for an easy 400hp
                        With what transmission/driveline?

                        Kaaaaaaaaaaabooooooom Not on a stock G6 drivetrain
                        Not gonna happen! I'm only aiming for mid-3s and I need new internals for my tranny. Not to mention the torque steer is gonna be enough as it is!
                        Mid-3's, Bit ambitious don't you think... I guess maybe solid fuel rocket might work.... that would definitely require a tranny overhaul though [/quote:3hjitigh]

                        Ha! My thoughts exactly!

                        And GT-R, even though the *charger is forcing air into the engine, why wouldn't smoothing out the intake tract help? I'm pretty close to the max speed of my supercharger currently, so I'm looking for other ways to get air through the engine before a power adder swap. Granted, the exhaust side needs a whole loot more work than the intake side, but I still don't see why it wouldn't be effective.
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                        • #42
                          *charged or uncharged, wouldn't making the airflow as smooth as possible continue to help?

                          Porting/Polishing effectively raises the CFM that can flow through a cylinder head, so why wouldn't porting/polishing a boosted engines head help in the same way?

                          I mean, doing just one or the other, you can probably get to the same end on stock parts. But a boosted engine, with the addition of a ported head, and a higher lift, longer duration cam, plus a good flowing exhaust, I would think would still have gains?

                          Maybe our terminology is just off here. When you say minimal performance gains, how much is minimal? 2%, 5%, 10% ?
                          Originally posted by colinpeddle
                          They'll begin missing us soon. Once all the threads stay on topic thru 14 pages... oh they'll miss us, our wit and our insane ability to wander off topic so effortlessly. Some day, a g5er will stop and say

                          Go tell the G6ers, passerby,
                          That here, by G6er law, we lie
                          Stranger, tell the G6ers that we behaved as they would wish us to, and are buried here.
                          THIS IS G6PERFORMANCE!!!!!!!!!!!!!!

                          KJHLKAJDHLKJHLKAAHHHHHHHHHHHH<- battle cry.

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                          • #43
                            Originally posted by carsuperfreak

                            Maybe our terminology is just off here. When you say minimal performance gains, how much is minimal? 2%, 5%, 10% ?
                            Minimal, as in not worth the cost. You'll make more power per $$, by increasing the effectiveness or efficiency of the turbo or supercharger. Now, if you want to clean up the chamber area, that's money well spent, because it decreases the chances for detonation.

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                            • #44
                              [quote=PwrG6Guy]
                              Originally posted by PrimeGTP
                              Originally posted by GT-R
                              Originally posted by carsuperfreak
                              Originally posted by "El_Diablo":2a7mqzqs
                              Ben does have a flow bench.. he knows all about porting and polishing 60 degree v6 engine parts and is who i plan to purchase from when i do my turbo 3400/3500 (possibly stroker) hybrid... just so that you know im also hoping for an easy 400hp
                              With what transmission/driveline?

                              Kaaaaaaaaaaabooooooom Not on a stock G6 drivetrain
                              Not gonna happen! I'm only aiming for mid-3s and I need new internals for my tranny. Not to mention the torque steer is gonna be enough as it is!
                              Mid-3's, Bit ambitious don't you think... I guess maybe solid fuel rocket might work.... that would definitely require a tranny overhaul though [/quote:2a7mqzqs]

                              Alright, you got me there, har har har!

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                              - Painted Headlights, 35% Tint, Silver Emblem Overlays
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                              • #45
                                Personally Im aiming for a small steel snail taking me at least to mid 14's. Faster with N20, suspension, and weight reduction
                                2007 G5 Base Model
                                Black 5 Speed

                                Walmart - A store where you can buy a shot gun, ammunition, a ski mask, a baseball bat, a meat cleaver and map of the middle east, but you can't buy a CD that has a "Parental Advisory" sticker.

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