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BP4W and VVT head AWD/FWD Intake Manifolds

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    #31
    I was planning to use this: http://949racing.com/skunk2-throttle-body-miata.aspx I havent really looked into it, but it's supposed to be direct oem replacement for the miata. So iac shouldn't be a problem? What are your thoughts? Other than that, I was going to order a 4wire bullfrog TB.
    Before you criticize someone, first try walking a mile in their shoes. Because then you'll be a mile away, and you'll have their shoes...

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      #32
      Originally posted by KaleoXtreme View Post
      I was planning to use this: http://949racing.com/skunk2-throttle-body-miata.aspx I havent really looked into it, but it's supposed to be direct oem replacement for the miata. So iac shouldn't be a problem? What are your thoughts? Other than that, I was going to order a 4wire bullfrog TB.
      My reasoning for getting away from the Bp throtle bodies was that the skunk 64mm one is the largest available, that I am aware of, and the stock iac uses some sort of cast chamber to deliver the idle air. At least that's my understanding. Also, I feel going through the effort and cost to swap in a higher flowing head and a sheet metal intake, 65mm would be the smallest I would go. I choose 70mm based on offerings for other 4 cylinder big horse engines.

      Personally iac isn't a concern for me. I won't be driving this car except to and from competitions/shows, at said competitions and the occasional sunday drive.
      Ian Boyd- Bellingham, WA (click vehicle to view)

      1988 BF GTX

      1990 x2 BG AWD Protege

      1991 Escort GT- SOLD

      1975 911 S Widebody 3.6 conversion

      2005 Corolla

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        #33
        Interesting. Are you using a 3" charge pipe? My IC piping is all 2.5 and I'm not sure if going bigger than 2.5 at the TB will make much difference. I'm also worried that using 3 IC pipe on my (soon to be) 2.0 displacement might hurt spool time, throttle response, etc. Of course, none of this is proven. It's only my own speculation. So I'm definitely interested in any information to the contrary.
        Before you criticize someone, first try walking a mile in their shoes. Because then you'll be a mile away, and you'll have their shoes...

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          #34
          70mm is 2.75 inches and 65mm is 2.55 inches. I am and will be running 2.5" charge piping. What I gathered online is that your throttle body ideally should be as large or slightly larger than the charge piping. I agree that 3" is probably too large.
          Ian Boyd- Bellingham, WA (click vehicle to view)

          1988 BF GTX

          1990 x2 BG AWD Protege

          1991 Escort GT- SOLD

          1975 911 S Widebody 3.6 conversion

          2005 Corolla

          Comment


            #35
            Ok cool. So 64mm (2.519") is not adequate?
            Before you criticize someone, first try walking a mile in their shoes. Because then you'll be a mile away, and you'll have their shoes...

            Comment


              #36
              Originally posted by KaleoXtreme View Post
              Ok cool. So 64mm (2.519") is not adequate?
              I don't know that I would say that, it'll probably depend on the amount of air you are trying to flow. Initially I will be pushing 60lbs/min. Then maybe more later. If you aren't going to be shooting past 350hp, then you are probably fine on stock size. But after that I'd say go larger.

              This is not scientific just what I've gathered on different forums. That being said people have made big power on stockish throtle bodies.
              Ian Boyd- Bellingham, WA (click vehicle to view)

              1988 BF GTX

              1990 x2 BG AWD Protege

              1991 Escort GT- SOLD

              1975 911 S Widebody 3.6 conversion

              2005 Corolla

              Comment


                #37
                that skunk 2 throttlebody is freaking cool. the miata TB is interchangeable to the BP correct????
                ---Has ClubProtege helped you in someway? show your support by Contributing--- Click Here---

                1992- project FE3..... 313 WHP @ 9.3psi




                I pet my dash when I get into the car..."good car"
                he actually has a mazda tree, parts grow on it

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                  #38
                  Originally posted by FE3-323 View Post
                  that skunk 2 throttlebody is freaking cool. the miata TB is interchangeable to the BP correct????
                  I am about 80% sure it is the same.
                  Ian Boyd- Bellingham, WA (click vehicle to view)

                  1988 BF GTX

                  1990 x2 BG AWD Protege

                  1991 Escort GT- SOLD

                  1975 911 S Widebody 3.6 conversion

                  2005 Corolla

                  Comment


                    #39
                    Ok, time for more discussion.

                    I've been trying to get a list of npt fitting sizes to ferdi.

                    I need some one to accurately measure the I.d. Of the brake booster nipple. Please!

                    Also, recommendations for universal iac setups would be nice.
                    I've found this:

                    And this


                    The second one there looks like it needs to be bolted to the body of the manifold or welded. I'd prefer to not have it bolted as it would likely be a source of failure, and welding would take more of ferdi's time and my dollars lol. So the first looks best but I am always open to hear other suggestions.

                    Fittings I have pretty much picked out are as follows:

                    Bov reference: 1/8" npt

                    Map sensor reference:1/8" npt

                    Boost gauge reference: 1/8" npt

                    Fpr reference: 1/8" npt

                    Brake booster port: tbd

                    Iac: tbd


                    I feel like that is alot of ports but idk. Lets collect some feedback
                    Ian Boyd- Bellingham, WA (click vehicle to view)

                    1988 BF GTX

                    1990 x2 BG AWD Protege

                    1991 Escort GT- SOLD

                    1975 911 S Widebody 3.6 conversion

                    2005 Corolla

                    Comment


                      #40
                      Just a friendly bump to show that I haven't forgotten about this and am still interested. I know Ferdi's a busy man, and I'm not in any particular hurry to get this going. But I do have some funds set aside for it.
                      Before you criticize someone, first try walking a mile in their shoes. Because then you'll be a mile away, and you'll have their shoes...

                      Comment


                        #41
                        Originally posted by KaleoXtreme View Post
                        Just a friendly bump to show that I haven't forgotten about this and am still interested. I know Ferdi's a busy man, and I'm not in any particular hurry to get this going. But I do have some funds set aside for it.
                        Ferdi more than likely is a busy man. The lack of updates probably has more to do with me though.

                        I probably think about this project a couple times a month but haven't done anything about it in awhile. I apologize Ferdi.

                        Last I recall I had gotten a mustang throttle body and mock up bp4w head casting out to ferdi. I still owe him info on vacuum port number and sizes. If there is more I am finally starting to be able to work on my cars again so I can hopefully get this wrapped up for ferdi soon.
                        Ian Boyd- Bellingham, WA (click vehicle to view)

                        1988 BF GTX

                        1990 x2 BG AWD Protege

                        1991 Escort GT- SOLD

                        1975 911 S Widebody 3.6 conversion

                        2005 Corolla

                        Comment


                          #42
                          Cool, thanks for the update!
                          Before you criticize someone, first try walking a mile in their shoes. Because then you'll be a mile away, and you'll have their shoes...

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