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When is too big too much?

Discussion in 'Engine Building' started by ThatGuy4life, Jul 24, 2007.

  1. ThatGuy4life

    ThatGuy4life The Riced Sleeper

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    So i've decided to kinda re-do my build a little since I have to pull the head anyway to fix my compression leak. Reason it's taken me so long to fix is cause i've been debating if I wanna change out parts already. My main question here is on an all motor setup such as mine when is too big of a throttle body too much? Here's the current list: bolded are things that I'm upgrading with new mods next to them all Skunk2
    Built 2000 B18C5-type R motor
    2000 Si tranny
    Stage 2 port and polished head
    Crower rods
    JE pistons
    12:1 compression
    STR Cam Seal SKunk2 cam seal
    Skunk 2 stage 2 camshafts Pro 2 cams
    Skunk 2 intake manifold Pro series manifold
    REV Valves Springs & Retainers Pro series valvetrain
    Act Flywheel
    RPS Six Puck Sprung Hub Clutch
    TrePerformance 255lph fuel pump
    Vission Fuel Pressure Guage
    440cc fuel injectors
    AEM Cam Gears Pro series cam gears
    AEM Fuel Rail
    AEM Fuel Pressure Regulator
    AEM V2 cold air intake
    OBX high flow cat Undecided
    OBX JDM ITR 4-1 headers Undecided
    Throttle body spacer Replaced with pro series throttle body
    APC Cat-Back Exhaust Skunk2 mega r exhaust
    NGK Blue Performance wires
    NGK Iridum plugs
    Will be getting the IM and TB port matched but before ordering the tb wanted to know if bigger is better for my setup?
     
  2. TurboMirage

    TurboMirage YEEAAAHHH VIP

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    well in the mirage n/a world bigger is always better. stock ive got a 48mm opening, and right now im at 56. 1.5 sohc

    the 1.8 sohc guys run the 60mm tb. stock is 52.

    definately a big difference when i put the bigger throttlebody on, with the phenolic spacers.

    my next upgrade will be some sort of custom intake manifold.
     
  3. ThatGuy4life

    ThatGuy4life The Riced Sleeper

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    But would the 70mm tb be overkill?
     
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