Announcement

Collapse
No announcement yet.

GTX vs. GTR intake manifold pics!

Collapse
This is a sticky topic.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    GTX vs. GTR intake manifold pics!

    here it is guys. the post that shows the things people talk about.

    the difference mainly is the internal workings of the plenum. there are a no real other small differences that are going to make or break hp/trq gains/losses. this is 100% an internal difference only.


    pic #1 you will see is the gtx intake plenum. its just your basic chamber.

    pic #2 you will see is the gtr intake plenum. now note the "waves" internally. this is what makes it so much nicer. it equals the flow and causes less turbulance.

    both pics you will notice they have the t/b water jacket. the t/b inlet is the same flange and same bore. tho the part number between the gtx t/b and gtr t/b is different there is no difference in it. they are both 4 wire tps t/b's.

    pic #3 you will see the head flanges. once again no difference. the runners are the same bore. some people have said that the runners are tuned. well from all i can see the only difference is the plenum end of them is tuned. so if that is what they mean by tuned then ok. but some people have said the whole runner is different. i don't have a fiber optic camera eye but the runner and the rest looks to be 100% the same as the gtx.

    pic #4 here you can see what is the passenger or left side. the plenum is the same size externally. all your vac lines are the same size also. once again nothing really changed externally.

    hope you like the couple pics. any input from you guys is welcome.

    NEUMAN
    Attached Files

    #2
    Awesome pics! I always thought the runners were different as well. I'll sticky this for some time
    -------------------------
    '91 LX
    '03 Mazdaspeed Protege #235
    -------------------------

    Originally posted by pigeon
    well if you're a fan of inaccuracy and uncertainty.... then by all means, go set your timing by feel and sound

    while you're out there, you might as well adjust your air/fuel ratio by smell... and your tire pressure by ride height

    Comment


      #3
      looks great. I was always curious on the actualy performance benfits of it. It probably benefits more at higher airflow volumes.

      Some of the aussie guys installed the GTR manifold on a GTX car and said he felt no difference. Any idea about this Neuman since you have both manifolds?

      Comment


        #4
        I've heard that it's better flowing but I highly doubt it'll make a noticable difference while driving.
        -------------------------
        '91 LX
        '03 Mazdaspeed Protege #235
        -------------------------

        Originally posted by pigeon
        well if you're a fan of inaccuracy and uncertainty.... then by all means, go set your timing by feel and sound

        while you're out there, you might as well adjust your air/fuel ratio by smell... and your tire pressure by ride height

        Comment


          #5
          There has been some discussion about volume vs. velocity. I’m wondering if a GTR intake is mainly designed as a racing, high rpm augmentation. If I were to put that on my GTX, my low end torque would take it in the shorts.

          The engine would have to also be designed to flow that much air i.e., head ports, huge turbo, exhaust, ect.

          Wouldn’t you have to have a larger displacement to off set the loss of air velocity in order to keep from loosing torque?

          A noob question I know.
          1991 Protege LX with GTX swap, DD
          1990 4WD Protege with GTX swap, Project/garage decoration
          2006 Mazda 3 with 2.3, Her car
          1980 Ford F100 Short bed with 300ci 6 cylinder, work truck/home for moss

          Comment


            #6
            Read over this thread:


            Although, it is not specifically about intake manifolds, it should answer the basis of your question in depth.

            Originally posted by 1st Gen
            There has been some discussion about volume vs. velocity. I’m wondering if a GTR intake is mainly designed as a racing, high rpm augmentation. If I were to put that on my GTX, my low end torque would take it in the shorts.

            The engine would have to also be designed to flow that much air i.e., head ports, huge turbo, exhaust, ect.

            Wouldn’t you have to have a larger displacement to off set the loss of air velocity in order to keep from loosing torque?

            A noob question I know.
            -------------------------
            '91 LX
            '03 Mazdaspeed Protege #235
            -------------------------

            Originally posted by pigeon
            well if you're a fan of inaccuracy and uncertainty.... then by all means, go set your timing by feel and sound

            while you're out there, you might as well adjust your air/fuel ratio by smell... and your tire pressure by ride height

            Comment


              #7
              If you notice in Pic #4 the PCV hookups are different also. I havn't been able to study many Manifolds, but Corksports GTR manifold has the same Rounded L as Neumans. And all the GTX ones I have seen have the T type.


              Mexican: "You wanna race for titles?"
              Mormon: "lol, no, I don't want your car."

              Comment


                #8
                The longer runners make me think that the GTR is made more for top end like you said.

                As you mentioned, the motor would need to flow more air, which with the better designed Exhaust manifold, and the sectioned manifold that neuman so kindly posted pics of, I would say thats the little extra flow there... sure its not much, but it is "better" than the GTX stuff.


                Side note -
                The GTR has the same restrictions as the GTX head (both have the same Bp stamp) that Idenetity_X posted about. W/O those restrictions the GTX is said to feel way weaker.

                The T3 BP MX-3 conversion has begun, and is taking forever & will kill me.

                Comment


                  #9
                  that tee style nipple is no biggy just a different part. there is nothing internal about it that i can see. as in there is no check valve or something like it.

                  the runners on both intakes are the same length. the only reason they look a little different is due to camera angle.

                  i have not run a gtr on a motor yet. but a buddy of mine has. he noticed no true difference. he also has an n/a head. he raced his cousin who has the same set-up just gtx stock stuff and the cars ran the same 1/4 times. they had 4 or 5 head to head runs at PIR in portland oregon.

                  Comment


                    #10
                    I put a gtr manifold on my bpt gtx. I had to turn my boost controller down by a few psi after the swap. Lag was cut by some amount as well. I have a NA protege head installed, as wide open an intake tract as can be had without getting rid of the AFM, a freaking huge IC, and a very wide open exhaust. i know Greg D. didn't see much difference with his install, but this is what I got out of it. --Jay
                    '90 AWD Protege, full GTR drivetrain swap, ~320 whp daily driver, RIP, and
                    '90 AWD Protege, yet another GTR swap, Open class rallycar with a Toyota GT4 gearbox swap, thus crossing the line between hobby and mental illness. And a Brabus E55 K8, removing all doubt.
                    http://www.wihandyman.com/forum/vbpi...?do=view&g=110
                    http://www.cardomain.com/ride/2599486

                    Comment


                      #11
                      Originally posted by neuspeedescort
                      that tee style nipple is no biggy just a different part. there is nothing internal about it that i can see. as in there is no check valve or something like it.
                      Ya but have you seen any L shaped ones on GTX manifolds??


                      Mexican: "You wanna race for titles?"
                      Mormon: "lol, no, I don't want your car."

                      Comment


                        #12
                        bugs look at pic #4 you can see the nipple you speak of perfectly. its only design difference not function. also that is just a breather tube anyways for blow by.

                        NEUMAN

                        Comment


                          #13
                          Thanks for clearing this up! +1 point for j00!

                          Comment


                            #14
                            bugs and i chatted on AIM lastnite. my gtr is new from mazda in 2004. the gtr intake manifold on the CS protege is a stock one from 90-94 what ever year it was built. it has the tee style pcv line like the gtx pictured above. we came to the conclussion that its just and updated design from the original stock units.


                            NEUMAN

                            Comment


                              #15
                              I scored a GTR PLenum and GTR Manifold so I have both to compare. The Exhaust Manifold is also a great improvement on the GTX one.

                              GTR Plenum looks the same except the inside. The Throttle body is stamped difference but i think they are both exactly the same.
                              1987 Ford Laser TX3 4WD with BPT FWD LSD
                              GT2876R, Turbosmart Ultragate, Weisco Forged Pistons, GTR Conrods, Race Flowed Head, HPC Tube Manifold, GTR Plenum, 550cc RX7 Injectors, Custom Fuel Rail, Infini LSD Diff, Straight Cut PAR 3rd Gear, FMIC, 4" Intake etc.
                              320HP at 24psi Pump Fuel & 12.5 @ 122mph Street Tyres

                              Comment

                              Working...
                              X