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setting the idle 87 tr

Discussion in 'Boxers/TR/M' started by JohnP, Jun 17, 2009.

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  1. JohnP

    JohnP Karting

    Nov 23, 2007
    159
    Richmond Hill
    Full Name:
    John
    #1 JohnP, Jun 17, 2009
    What is the right way? do i close both adjusters all the way, open them a turn each and start from there? keeping them the same. What should the idle be at? I played a little last night and it seems to have improved off the idle response. The right bank was only out about a 1.5 turns out and the left was way out. I tried to close it but after about 3 turns i stopped since i didn't want to get to far from where it was.
     
  2. KENCO

    KENCO Formula 3

    Nov 1, 2006
    2,396
    FL
    Full Name:
    KJG
    #2 KENCO, Jun 17, 2009
    Oh man..............you will be playing with it for weeks! LOL!

    There actually is a written procedure for setting up everything, very involved, I will try and locate it for you.
     
  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,766
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #3 Steve Magnusson, Jun 17, 2009
    Last edited: Jun 17, 2009
    What engine family TR? F113A040 (US), F113A (early euro), F113B (late euro)?

    With regard to the overall set-up, the (complete) TR WSM has a good description for a US KE-Jet with Lambda, but the bottom line is that you want the following conditions when at warm idle with the O2 sensors unplugged (so you need to be able to measure the vacuum level in each intake manifold to ensure that they are "balanced"):

    Condition 1
    Air bypass screws fully closed
    Pressure (vacuum) in each manifold equal (but not necessarily the same value as in Condition 2) -- the throttle plate rest position is adjusted to achieve this condition
    engine speed = 700 RPM
    A/F ratio = may be a little rich (this is set in Condition 2)

    Condition 2
    Open the air bypass screws to give 1000 RPM
    Keeping the pressure (vacuum) in each manifold equal
    A/F ratio = 1%~1.5% CO upstream of cats

    Another way to say this is -- if you've got Condition 2 (the normal operating set-up) right, when you fully close the air bypass screws, you should have Condition 1. (1.5 turns opened from fully closed on the right bank's air bypass screw is quasi-reasonable; more than 3 turns on the other bank is not.)
     

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