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Throttle Body Port Polish

Discussion in 'General Tech and Maintenance' started by auggiereg, Apr 29, 2003.

  1. auggiereg

    auggiereg Member

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    I just bought a throttle body from a 95 Civic Si for my Dx and I wanted to know where and how much it would cost to get it port and polished. Southern California locations are preferred. More precisely anywhere near West Covina would be even better. Thanks for the info.
     
  2. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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  3. pills_PMD

    pills_PMD Super Moderator

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    you should just put a 60mm b series throttle body on it... more cost effective.
     
  4. solblu

    solblu Senior Member

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    Easy cheap and effective. Any OBD1 B series would work well.
     
  5. auggiereg

    auggiereg Member

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    I already bought the thing and has been shipped to me. If I were to port and polish it would I also need to port and polish match the intake manifold? The throttle body is already at 62mm would it be pointless to port and polish it?
     
  6. solblu

    solblu Senior Member

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    From my site, Re-measure it on the side that goes to the Manifold it's only 56mm stock, I'm sure it wasn't bored out to 62; however if it is, it's already ported and yes you wil need to port match the manifold. It's easy to do yourself. Put the TB on the IM and mark it with a marker, then dremel it out.

    Honda/Acura Throttle Body Inside Diameters (in mm)

    B18C1 60
    B18C5 62
    B18A 58
    B18B 60
    B16A SiR 58
    B16A SiR2 / B16A2 60
    B16A3 58
    B20B/Z 60
    F20C 62
    D15B7 56
    D16A6 55
    D16Y7 56
    D16Y8 56
    D16Z6 56
    ZC 55
    D16A1 55
    D16A8 55
    H22A / H23A 60
    F22/ F23 60


    Note most Honda Throttle Bodies are tapered and the outside diameter is larger than the inside diameter
     
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