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  1. #1
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    Default How to set timing with S4 cams

    I just finished Up with swapping my motor and I'm bout to start it up and check for leaks. While I was assembling everything I figured I'd throw in my S4's while I was there. I usually install my stock cams first set timing and drive it around for a lil while to make sure everything is all good then I zip tie sprocket to chain to make sure I'm not off a tooth then put cams in. How do you guys check your timing with the rough idle of S4's?

  2. #2
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    Just put these in. Timing light and it will bounce around. Mine when the light flashes shows it either just before/at/or just after the paint mark. My question is where should the timing be sett with s4 cams?
    92WhiteNx2k
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  3. #3
    Endless Spinning
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    If idle is too crazy, raise your idle screw to get it to idle right first. Aim for an 900rpm or so. Some guys like running the S4 cams at 1k rpm or so to smooth out the idle.

    For getting into timing mode(and a bunch of other useful stuff), I'd suggest a Consult cable off ebay.

    Timing should be at 15*

    -G
    Last edited by gomba; 08-14-12 at 09:54 PM.
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  4. #4
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    Do you have JWT ECU?
    Jordan
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  5. #5
    OEM Plus.
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    Unplug TPS.

    Idle should be still.

    Use consult cable and go into timing mode the digital way can work also.

  6. #6
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    Yup I have JWT ecu

  7. #7
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    Quote Originally Posted by Se-R 4Me View Post
    Yup I have JWT ecu

    Okay, then according to JWT you should be at 15.
    Jordan
    '98 SE-R, '12 Versa Hatch & '14 Juke Turbo
    Music - - My SR20 website

  8. #8
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    Quote Originally Posted by Kyle View Post
    Unplug TPS.

    Idle should be still.

    Use consult cable and go into timing mode the digital way can work also.

    Occasionally I've noticed that after a cam install the engine will stall once the TPS has been disconnected, so you may just need another person behind the wheel to give it a little throttle. Interestingly, I've never noticed this on B13s, only B14s.
    Jordan
    '98 SE-R, '12 Versa Hatch & '14 Juke Turbo
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  9. #9
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    Probably due to that sensitive ass OBD 2 ECU

  10. #10
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    i've never been able to get my car to not die when i put it in timing mode

    stock u13 ecu
    1991 NX2000 SR20DEEP PNW
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  11. #11
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    Then your doing something wrong. lol.

    As far as optimum timing for the s4's. That depends on the setup. With full bolt ons my old se-r liked about 19* base timing with them.

    In turbo use, just stick to 15 deg. If everything is installed correctly as far as the cam install wise, the distributor with the bolt in the center should be fairly close to 15 deg.

    Get the idle where you want it first then go into timing mode and set timing.
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  12. #12
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    Quote Originally Posted by ashtonsser View Post
    Then your doing something wrong. lol.

    As far as optimum timing for the s4's. That depends on the setup. With full bolt ons my old se-r liked about 19* base timing with them.

    In turbo use, just stick to 15 deg. If everything is installed correctly as far as the cam install wise, the distributor with the bolt in the center should be fairly close to 15 deg.

    Get the idle where you want it first then go into timing mode and set timing.
    ^^^this
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  13. #13
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    So I just adjusted my idle a bit higher and advanced the timing a little bit on the DE. The idle had been loping around and dropping low since I installed Tomei 270's last week.. I set it at 1000rpms because of the lope. The weird thing is, I also have the JWT ECU with the S3/S4 cam program and I thought that was supposed to (among other things) raise the idle a bit to make it less lopey for the cams. Strangely, after 220 miles with the Tomei cams this never happened.
    Jordan
    '98 SE-R, '12 Versa Hatch & '14 Juke Turbo
    Music - - My SR20 website

 

 

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