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Thread: Intake runner porting-TIII mainly!

  1. #1
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Intake runner porting-TIII mainly!

    Maybe I am overthinking but I have a large plenum, ported head but the runners, aprox 4 inchs long, are untouched. Should I open them up or leave them stock?

    2 reasons, in my mind, to leave them stock-keep up some port velocity to make it more driveable and help reduce lag so to speak.

    Or will porting it make the whole package better and stop overthinking, this isn't an N/A engine.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  2. #2
    turbo addict Turbo Mopar Contributor Dave's Avatar
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    Re: Intake runner porting-TIII mainly!

    It depends on your power band. What RPM are you revving to now and what will you plan to rev later?

  3. #3
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: Intake runner porting-TIII mainly!

    99% street with some drag duty. I rev at the track from 7-7500 if needed.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  4. #4
    turbo addict
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    Re: Intake runner porting-TIII mainly!

    Do you have a spare intake ? If so get creative with the spare one over the winter that way you can do a comparison. then run the on that work for you.

  5. #5
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: Intake runner porting-TIII mainly!

    Trouble is, the one in my van is heavilly modified.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  6. #6
    turbo addict
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    Re: Intake runner porting-TIII mainly!

    if it was me and its not . i would hog it out

  7. #7
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    Re: Intake runner porting-TIII mainly!

    open it up. bigger at the opening and gasket matched or matched to your head at the bottom That seems to work well on my modified 2 piece.

  8. #8
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: Intake runner porting-TIII mainly!

    Ironically, I had to grind off the lower port on the head as there was a big mismatch, aprox 1/8 of an inch.

    Guess I will finish porting it this winter.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  9. #9
    turbo addict Turbo Mopar Contributor Dave's Avatar
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    Re: Intake runner porting-TIII mainly!

    7,500... I'd hog the crap out of the them. Especially on the size of your turbo, the amount of pressure you're running, and how efficient that engine is, it handle a bunch of porting... in fact I'd go as far to shorten the runner length if you could. 4" may be a tad long for 7,500.

  10. #10
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: Intake runner porting-TIII mainly!

    Its pretty short, check the photo's in my lounge thread.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

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