Announcement

Collapse
No announcement yet.

Porting??

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Porting??

    Ok i had no idea where to post this, and since i have a 1st gen I decided to post in here...question. How does one go about learning how to do port work? I got some tools for it, and I would like to learn. Now would I be best off, just getting some old scrap heads and start experimenting? Theres a couple of guides that ive found on the web, that are pretyt informative. Should I just do that, or does anyone have any suggestion or tips?? THanks
    Eat ****.

    #2
    Post up what you've found. I'm interested.
    My ClubProtege.com Feedback Thread


    MOSI Race Dynamics
    - Aftermarket Parts Sales & Services MOSI Race Dynamics Feedback Thread

    Comment


      #3
      get a dremel grinding stones and have at her. take lots if pics. good luck
      When you turn your car on... does it return the favor?

      Originally posted by goldstar
      Yes, still have it. It was my attempt to immortalize you in verse.

      A Protege driver named Brock
      Once said 7 seconds he'd clock.
      So his engine he goosed
      With much too much boost,
      And drove a rod through his block.

      Comment


        #4
        Heres some info I found its real informative...

        SBOBET88 adalah salah satu situs judi online terkenal di Indonesia yang menyajikan link SBOBET asli langsung dari SBOBET Asia.
        Eat ****.

        Comment


          #5
          start reading every fluid dynamics book you can. that's all it is...
          "Never run out of real estate, traction & ideas at the same time"
          -93 MR2, 129 ES
          ClubProtege.com Tech Articles

          Originally posted by WTF
          Remember low compression makes more space for AIR, HEEELLOOOO!

          Comment


            #6
            also, you'll have to get a good idea of how each componet of the engine plays with power production. certain things will help low lift flow, while others will help only in the upper portions while huring low lift flow, etc.
            "Never run out of real estate, traction & ideas at the same time"
            -93 MR2, 129 ES
            ClubProtege.com Tech Articles

            Originally posted by WTF
            Remember low compression makes more space for AIR, HEEELLOOOO!

            Comment


              #7
              Originally posted by JesseSays
              start reading every fluid dynamics book you can. that's all it is...
              How smart do you have to be to understand the ****??
              I'm pretty smart (or so I think) but I'm not a genius. I don't really know a whole lot about physics for example, I would assume that part of fluid dynamics has to do with physics, and I really suck at technical math.
              Ryan The middle child is always ignored
              BP powered 97LX Touring Edition
              Vibrant strut tower brace, KVR front brake pads, Tungsram Megalicht H4 headlight bulbs, Phillips Halogen H3 foglight bulbs.... 91 GT rims w/ 195 60 14 Yokohomo Mirada GTX sport

              Comment


                #8
                you need to get the basic feel for it....even if you can't break down the math into specific numbers. But you need to understand how fluids move through pipes and how changing shapes, lengths, fluid viscosity, etc, etc all change that stuff.
                "Never run out of real estate, traction & ideas at the same time"
                -93 MR2, 129 ES
                ClubProtege.com Tech Articles

                Originally posted by WTF
                Remember low compression makes more space for AIR, HEEELLOOOO!

                Comment


                  #9
                  also, check out other message boards...

                  such as: www.theoldone.com

                  by the way, unless you have specific technical questions for that board, please JUST BROWSE until you get a very good idea of what you're talking about. I don't post about actual cylinder head stuff there...just learn.
                  "Never run out of real estate, traction & ideas at the same time"
                  -93 MR2, 129 ES
                  ClubProtege.com Tech Articles

                  Originally posted by WTF
                  Remember low compression makes more space for AIR, HEEELLOOOO!

                  Comment


                    #10
                    you know what sucks big time. Im one of those people that learn by doing hands on things. When I sit down to read it just goes in through my eyes and out through my ass..lol. I guess thats why im never gonna be an engineer.
                    Eat ****.

                    Comment


                      #11
                      Thats an awesome site Jesse, thanks. Im learning already....says that mirror like finishes on the ports is not a good thing....
                      Eat ****.

                      Comment


                        #12
                        Originally posted by JesseSays
                        you need to get the basic feel for it....even if you can't break down the math into specific numbers. But you need to understand how fluids move through pipes and how changing shapes, lengths, fluid viscosity, etc, etc all change that stuff.
                        Hmmm. Sounds simple enough. In school last year, there was a course on pumps, positive displacement non-positive etc. Afterall an engine is basically a pump in a way. but they taught us about friction loss through pipes of varying materials, shapes and sizes. It was always water, but hey, hats a fluid right??
                        Don't worry, I don't plan on posting anything. ****, on the "other" board I didn't even register for months after I started reading.
                        Ryan The middle child is always ignored
                        BP powered 97LX Touring Edition
                        Vibrant strut tower brace, KVR front brake pads, Tungsram Megalicht H4 headlight bulbs, Phillips Halogen H3 foglight bulbs.... 91 GT rims w/ 195 60 14 Yokohomo Mirada GTX sport

                        Comment


                          #13
                          Guys, porting a head and getting great results from low lifts to high valve lifts is not simple. The biggest mistake you can do is start enlarging the cross sectional area. It takes skill and a flow bench to do things right. I also highly recommend to perform a 3 angle valve job, since this achieves great results at low valve lifts on intake and exhaust valves.

                          BTW I'm an engineer and I've specialized in dynamics and behaviour of compressible fluids (air, exhaust, etc), I'm a rocket scientist in other words, work for the aerospace industry. I've done half a head and the other half of the head was done from a porting expert (28 years experience) and I've achieve similar results on the exhaust ports as he did but on the intake ports at low valve lift (below 0.150") my side got bad results. He had patience to show me my mistakes, I guess you learn as you practise.

                          The best way to learn how to port a head properly is to speak with an expert and make them show you what's required and why, and also to use a flow bench. The intake ports are the hardest since you don't want to increase the area, the exhaust ports are the simplest since all you need to do is polish them to a mirror finish and you can enlarge the area but I would only enlarge them a bit, since enlarging them too much will affect the reversion during overlap period at low rpms (idle - 4000rpms).


                          BTW when my BP head was ported from the expert, he was able to improve the intake side by 16% at 0.375"lift and 14% on the exhaust side at same lift. I also ported and polish the intake manifold and knife edge areas that will eliminate turbulence.
                          92 323 with BP DOHC
                          ported/polished head, regrinded cams, JUN adjustable cam gears, ported AFM, ported/knife edged intake manifold.

                          N/A project dropped.

                          Comment


                            #14
                            umm, yeah...

                            if you read the stuff on the website that I had up earlier, you'd see that getting low lift flow is exactly what he tries NOT to do, as it aids reversion.
                            "Never run out of real estate, traction & ideas at the same time"
                            -93 MR2, 129 ES
                            ClubProtege.com Tech Articles

                            Originally posted by WTF
                            Remember low compression makes more space for AIR, HEEELLOOOO!

                            Comment


                              #15
                              Originally posted by JesseSays
                              umm, yeah...

                              if you read the stuff on the website that I had up earlier, you'd see that getting low lift flow is exactly what he tries NOT to do, as it aids reversion.
                              Low lift flow is the most important. Below 0.040"lift you don't care and but between 0.050"to 0.200"this is the most importan range since your valve spends more time in that range.

                              Reversion is a function of valve lift during overlap period and during intake valve closing event, in our case (BP engine) our vavles are not even 0.030"during overlap period, same goes with intake closing point.
                              92 323 with BP DOHC
                              ported/polished head, regrinded cams, JUN adjustable cam gears, ported AFM, ported/knife edged intake manifold.

                              N/A project dropped.

                              Comment

                              Working...
                              X