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Pressure test port thread and identification

Posted by GSX_Dan, Jun 14, 2019

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  1. GSX_Dan

    GSX_Dan Proven Member

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    I'd like to monitor the pump pressure and clutch pressures by installing a pressure sensor in the test ports on the exterior of the trans, I didn't see anything about these ports in the service manuals I'm using, anyone know what size they are and what they do? Doesn't look like 1/8BSPT.. From left to right they're labelled:
    RD, DR, DA, RC, FC
     
  2. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    I'd venture to say the RC and FC stand for Rear Clutch and Forward Clutch packs, but I'm not sure on the other 3. I will see what I can find in my transmission manual.
     

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  3. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    15606080513073741511308653861213.jpg 15606084173856285098297699632714.jpg 15606084389458099928171840664361.jpg
     

    252  17

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

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    1998 Eagle Talon TSi
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    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM

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    1990 Eagle Talon TSi AWD
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  4. GSX_Dan

    GSX_Dan Proven Member

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    Thanks for taking the time to post those pics @1990TSIAWDTALON

    Now where is the darned "line pressure" tap so I can see what pressure it's pumping?(Kiggly talks about this line pressure) I think it would also be useful to see if it's gulping air on launches.

    Those diagrams dont mention the DA tap, I think it stands for "damper apply" but not sure what it means.
     
  5. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    I'll try to find it for you. Im right there in my auto after changing the front clutches out for Kiggly 5 paks.
     

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    1967 Chevrolet Camaro RS
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  6. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    I don't know if this helps. I can't find a line pressure tap tho. There HAS to be one for checking, look at that picture real hard, maybe it will spur a thought! :)
    Marty 15606490633424449060339162335062.jpg
     

    252  17

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 348  4

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 3K  17

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
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    1990 Eagle Talon TSi AWD
    13.612 @ 107.760 · 1G DSM
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  7. GSX_Dan

    GSX_Dan Proven Member

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    Kiggly talks about the rear clutch seeing the full line pressure in his writeup on pressure recommendations. Maybe that's the only spot?
     
  8. GSX_Dan

    GSX_Dan Proven Member

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    Just a partial update, the threads are m8x1.25 with o-ring seal... I'm not having any luck finding this adapter to 1/8" npt so I can plug in my pressure sensor.
     
  9. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    Have you looked for an 8an ORB fitting? Like my AFPR has on it for a plug on the back but it is a 6an ORB.
     

    252  17

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 348  4

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 3K  17

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM

    4K  24

    1990 Eagle Talon TSi AWD
    13.612 @ 107.760 · 1G DSM
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  10. GSX_Dan

    GSX_Dan Proven Member

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    AN fittings are SAE/standard sizes not metric.

    After many hours/days of creative searching I found it! It's an adapter used in a transmission service machine I believe, listed for the KM transmissions but it works! Doesn't come with o-ring but its made for it, just swap from the plug you're removing. It's $6 select fitting "A"

    https://www.g-tec.com/store/p57/Transmission_Pressure_Gauge_Fitting_Kit.html
     
    1990TSIAWDTALON likes this.
  11. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    Good Deal!!! :thumb:
     

    252  17

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 348  4

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 3K  17

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM

    4K  24

    1990 Eagle Talon TSi AWD
    13.612 @ 107.760 · 1G DSM
    Loading...
  12. DogWhistle

    DogWhistle Proven Member

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    Thank you! We will be ordering one.
     

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