Results 1 to 7 of 7
  1. #1
    David 1 FAST VE's Avatar
    Join Date
    Jun 2005
    Location
    Southaven, MS
    Posts
    1,958
    +1
    1

    Throttle Body Modification

    Do you think that the 58mm is to much??


    I looked around at the car TB's to gauge how the performance shops sized them.

    The 1800cc Honda's use 65mm

    65/1800=.036111mm per cc

    So .036111x1500=54.16mm

    These numbers seem to be based on a NA engine.

    56mm would be safe but do you think 58mm with the SC would be any better??


    Any thoughts would be appreciated!!



    David


  2. #2
    CRS's Avatar
    Join Date
    Jul 2005
    Location
    Auckland, NewZealand
    Posts
    335
    Les is boring them to 60mm

  3. #3
    Got Boost? psycho rxp's Avatar
    Join Date
    Jul 2005
    Location
    Port St. Lucie, FL
    Posts
    5,430
    +1
    177
    At 58mm I believe you would have to bore the intake manifold to match it. I'm running the 56mm TB with the "B" kit charger. Very nice throttle response

  4. #4
    HOSS's Avatar
    Join Date
    Aug 2005
    Location
    Kenner, LA
    Posts
    4,700
    +1
    21
    I`m getting mine done.

  5. #5
    David 1 FAST VE's Avatar
    Join Date
    Jun 2005
    Location
    Southaven, MS
    Posts
    1,958
    +1
    1
    I am going to do the 58mm and if I loose any performance due to it being to large then that only means that I need more go fast parts

  6. #6
    EZ Dock of Long Island Shibby1485's Avatar
    Join Date
    May 2005
    Location
    Long Island, NY
    Posts
    9,466
    +1
    3
    bore out the intake manifold inlet... y not?

  7. #7
    If these things realy are Alpha-N tuning.... Changing the throttling device will have a huge effect effect on the bottom end tuning of the fuel maps. Depending on the map readings between the throttle and the turbo has a huge effect on the turbo output. Turbos hate to suck, they love to blow. Generally you want to keep the airflow in the throttle body in the 75 MPH range. The spread sheet I posted in another post covers some of this.

    AW

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Intake manifold modification and 60mm throttle body
    By Green Hulk in forum Yamaha PWC Performance (4-stroke)
    Replies: 74
    Last Post: 01-22-2016, 07:22 AM
  2. Bored throttle body
    By Green Hulk in forum 4-Tec Performance
    Replies: 61
    Last Post: 09-10-2007, 01:01 PM
  3. Procedure for swapping ECUs and Throttle Bodies?
    By Jarrett in forum 4-Tec Performance
    Replies: 6
    Last Post: 05-29-2006, 12:40 AM
  4. Intake manifold? Throttle body?
    By 01xdime in forum 4-Tec Performance
    Replies: 21
    Last Post: 10-06-2005, 11:22 AM
  5. WTB Throttle Body for project
    By 1 FAST VE in forum 4-Tec Performance
    Replies: 2
    Last Post: 08-18-2005, 10:45 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •