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AL4SPN - Evo Drivelined Gtae

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    #31
    Originally posted by kaputt 323 View Post
    Those custom mounts mean serious business -you may want to invest in a HANS system.

    I really dig the ITBs (like who doesn't?). Are they 45mm each? Once read somewhere about velocity/runner length being an important factor on naturally aspirated engines, but the article never clarified if the same applied to forced induction.

    Keep posting!
    Yeah the engine and gearbox has very little movement as the nolethans mounts are pretty hard :D

    Yeah they are 20v 4age quad throttles, 50mm at the mounting face but taper to 45mm i think at the butterflys. i have read that to not sure fot turbo motors but i do have 40mm long velocity stacks inside the plenum as well

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      #32
      Originally posted by tym2pla7 View Post
      Complete noob question but wouldnt the main shaft be short ??
      main shaft? not sure i no what you mean

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        #33
        Hey, everybody. Let's wish NoBoDy_nz and his countrymen a swift recovery form the deadly earthquake.

        Stay safe, mate.
        Scott F. Williams
        Team Director
        Usually Sideways Rally Team
        www.usrallyteam.com
        856.456.3335

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          #34
          I've been glued to the TV since it happened.

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            #35
            Cheers guys,

            myself and family live in auckland so am not directly affected by the quake but my work does have a few sites in christchurch one which has major damage but no one was hurt.

            Looks like the city is a pretty big mess

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              #36
              Originally posted by kaputt 323 View Post
              Once read somewhere about velocity/runner length being an important factor on naturally aspirated engines, but the article never clarified if the same applied to forced induction.
              The same technical advice applies to forced induction. However, the % gain from a properly-tuned intake runner is much smaller with boost compared to normal aspiration. Basically, you'll notice it much in terms of throttle response and faster turbo spool.

              My company is working on a plug n' play ITB setup right now for the B6T, btw. I forget the exact dimensions, but... it was something like 16" runners (measured from valve center to end of velocity stack) that'd put the torque peak in the 5500rpm zone. I could dig up my calculations if there's interest.
              Scott F. Williams
              Team Director
              Usually Sideways Rally Team
              www.usrallyteam.com
              856.456.3335

              Comment


                #37
                Originally posted by NoBoDy_nz View Post
                main shaft? not sure i no what you mean
                sorry about that but i meant the main shaft from the gear box to the engine because of the adapter plate or is there enough length on it for it to work
                handed down to my old man : 1994 Escort gt
                Race car: 1991 EGT BP/bpt
                http://www.wihandyman.com/forum/show...racecar-s-life
                daily: 2004 mazda 6
                http://www.wihandyman.com/forum/show...678-TheSexySix


                Welcome to Canada

                ''It's a shame that today's car forums have "fashionistas" instead of gear heads''

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                  #38
                  Originally posted by tym2pla7 View Post
                  sorry about that but i meant the main shaft from the gear box to the engine because of the adapter plate or is there enough length on it for it to work
                  Sure is i have a custom made flywheel and everything was worked out so the input shaft goes far enough in to the quatermaster twinplate clutch, also one plus is that the Evo gearbox does require a spigot bearing.

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                    #39
                    Originally posted by NoBoDy_nz View Post
                    Sure is i have a custom made flywheel and everything was worked out so the input shaft goes far enough in to the quatermaster twinplate clutch, also one plus is that the Evo gearbox does require a spigot bearing.
                    okay... and once your done ill take two cant wait to see this go
                    handed down to my old man : 1994 Escort gt
                    Race car: 1991 EGT BP/bpt
                    http://www.wihandyman.com/forum/show...racecar-s-life
                    daily: 2004 mazda 6
                    http://www.wihandyman.com/forum/show...678-TheSexySix


                    Welcome to Canada

                    ''It's a shame that today's car forums have "fashionistas" instead of gear heads''

                    Comment


                      #40
                      Originally posted by Scott@USRT View Post
                      The same technical advice applies to forced induction. However, the % gain from a properly-tuned intake runner is much smaller with boost compared to normal aspiration. Basically, you'll notice it much in terms of throttle response and faster turbo spool.

                      My company is working on a plug n' play ITB setup right now for the B6T, btw. I forget the exact dimensions, but... it was something like 16" runners (measured from valve center to end of velocity stack) that'd put the torque peak in the 5500rpm zone. I could dig up my calculations if there's interest.
                      Thanks for clearing that up. I recently read another article about Mazda's 91 Lemans winner which had automated, telescopic runners.

                      I recall a photo you once posted of the ITB set-up featuring the side mounted tank and vacuum station. How's it coming along? What other go-fast products does your company make for the 323?

                      Comment


                        #41
                        Originally posted by kaputt 323 View Post
                        Thanks for clearing that up. I recently read another article about Mazda's 91 Lemans winner which had automated, telescopic runners.
                        Ha, yeah! Well don't expect technology like that for this Mazda project. That's... Well, that's literally Le Mans stuff.

                        Originally posted by kaputt 323 View Post
                        I recall a photo you once posted of the ITB set-up featuring the side mounted tank and vacuum station. How's it coming along? What other go-fast products does your company make for the 323?
                        Right, the research and development on that package is now complete. Mazda Miata and 323 people will never pay for that. Instead, we're casting the intake manifolds in aluminum and will mate them to inexpensive 45mm bike throttles similar to what others are doing here. We'll also supply proper length runners and plenum for a bolt on package. It might even run acceptably with the factory ECU! (However, I'm making no promises about that.)

                        If we can sell maybe... 15 kits to the BFMR crowd and 35 to those with early Miatas (B6-powered), then I'd be happy to release the full package for less than $1200. If NoBoDy_nz doesn't mind further discussion in this thread, then I'll show off the CAD drawings and photos of our casting process. (I don't want to hijack this thread.)

                        I did find this data, though:
                        Runner length (measured from intake valve center to plenum floor or inlet radius) : 14” = torque peak at 6050rpms
                        *intake port area: 1.73sq” (1.69" stock)
                        Turbo: "BIG"

                        Runner length: 15.27” = torque peak at 5500rpms
                        *intake port area: 1.59sq” (1.69" stock)
                        Turbo: VJ14/11 hybrid

                        Runner length: 16.8” = torque peak at 5000rpms
                        *intake port area: 1.45sq” (1.69" stock)
                        Turbo: stock VJ14

                        *Port area calculation is for normal aspiration/pre-spool performance.

                        P.S. We've never produced anything for these Mazdas except for my own car. I'm the boss, so what I say "goes". I say we're making Mazda bits this time. So, it's happening. We might do some BFMR shifter bushings next (since they seem to be in demand and nobody else is making it happen).
                        Last edited by Scott@USRT; 02-24-2011, 05:10 PM.
                        Scott F. Williams
                        Team Director
                        Usually Sideways Rally Team
                        www.usrallyteam.com
                        856.456.3335

                        Comment


                          #42
                          Thanks for the data. At less than 1200, the package sounds real interesting. I'm currently negotiating with a gentleman who wants that much for just the throttle bodies -Jenvey throttle bodies. Will be watching for your thread.

                          BTW, What's your opinion on NoBoDy's set-up so far?

                          Comment


                            #43
                            Originally posted by kaputt 323 View Post
                            Thanks for the data. At less than 1200, the package sounds real interesting.
                            I hope I don't dissapoint but that $1200 probably does not include the throttle units themselves. Over here they cost $75 - $200 depending on where you find'm. We'll help people source them, though.

                            I'm currently negotiating with a gentleman who wants that much for just the throttle bodies -Jenvey throttle bodies. Will be watching for your thread.
                            Yep, and that's actually a good price for the Jenvey stuff. My method is a deliberate bridge between rough "do it yourself" and "just buy it complete". We're going to take the high price pain away but also deliver a product that's technically superior to available options.

                            BTW, What's your opinion on NoBoDy's set-up so far?
                            Simply put, his overall excution is superb. The plenum is 100% perfect (if not better). I'm even a bit jealous maybe. The only thing that looks to be a compromise is the intake runners. They're much too short to help with low-rpm cylinder filling. Again, though, this is more of a concern with normally aspirated engines vs. boost. Yeah, it's a damned good build. I can tell that a lot of thought went into it.
                            Scott F. Williams
                            Team Director
                            Usually Sideways Rally Team
                            www.usrallyteam.com
                            856.456.3335

                            Comment


                              #44
                              Fuel lines all finished :D

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                                #45
                                Got a few things finished off, and got a gizzmo shiftlight and launch control to put in as well

                                Ecu and relays mounted, oil cooler mounted, battery mounted and pump mount

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