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  1. #1
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    Default Tips for Resetting Cam Timing

    So the race car rolled off the trailer about 3-4' with the car and gear and it seems to have caused it to jump timing.

    I have read around about cam installs and timing chain/tensioner swaps but can't find a nice down and dirty way to just open up the top and reset the cam timing.....anyone give me a quick cheater way to set it?

    I know about how many links, TDC etc....specific questions, can I do this with the cams in and the gears on, by just turning the cam back to where it should be?

    appreciate the help.

  2. #2
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    HOW TO: Check camshaft timing

    Set crank pully at 0*. Intake cam at 10 o'clock. Exhaust cam at 12 o'clock. 20 pins inbetween.
    Cant go wrong.

  3. #3
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    Default

    thanks, great link....now say when I get in there and the cams are off.....unslack chain, set cams, install new tensioner....good to go?

  4. #4
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    If you set everything as described in link. You should be fine. Turn engine a few times by hand before starting.

  5. #5
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    crappy cell phone pic, but seems to be at 10 and 1, so just untension, move the Intake cam in place and button back up?


  6. #6
    The Repair Man
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    correct remove the tensioner and rotate the cam by hand. when your done you should have 11 links from the mark on the cam gear to the other mark on the other cam gear.
    Mike
    92 SE-R SR20VE-T 6262 Powered 535whp and 380lbft @22psi
    http://www.cardomain.com/id/cortrim1
    http://www.av-engineered.com/

  7. #7
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    Default


  8. #8
    The Repair Man
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    Quote Originally Posted by georgethefierce View Post
    you have 11 links in the picture but from the position of the key I can see that your off by 1 tooth on the cam gear.
    Mike
    92 SE-R SR20VE-T 6262 Powered 535whp and 380lbft @22psi
    http://www.cardomain.com/id/cortrim1
    http://www.av-engineered.com/

  9. #9
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    Default

    ok, but if I move it a tooth I will lose the 11 links.

  10. #10
    The Repair Man
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    Quote Originally Posted by georgethefierce View Post
    ok, but if I move it a tooth I will lose the 11 links.
    yeah I just though of that. pull the slack out of the chain by rotating the motor counter clock wise and everything should line up then. I forgot when the chain is not tight the intake cam tends to sit at 1 and not 12.
    Mike
    92 SE-R SR20VE-T 6262 Powered 535whp and 380lbft @22psi
    http://www.cardomain.com/id/cortrim1
    http://www.av-engineered.com/

  11. #11
    The Repair Man
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    should look like this minus the colors links since they only line up every 100 revolutions.

    Mike
    92 SE-R SR20VE-T 6262 Powered 535whp and 380lbft @22psi
    http://www.cardomain.com/id/cortrim1
    http://www.av-engineered.com/

  12. #12
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    make absolutely sure you are at tdc. I usually put a big screwdriver in #1 cylinder. If there's some strecth in the chain on a high mile motor it can be a bit tough to eyeball. Ask me how I know.
    1991 NX - Stalking Horse - mild bolt-ons
    1993 Sentra - my freinds 4 door SE-R VVL USDM Tsuru Sunny Supersaloon conversion in progress
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    "Everybody's got a plan... and then I punch them in the mouth." Mike Tyson

  13. #13
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    I rotated it all the way around and it's balls on.....I assume the Dizzy is the next place to check?

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    changed dizzy, start car up, running like garbage with a CEL, the car has no ignition switch just toggles for fuel pump and push button ignition, how can I check the CEL? fwiw when i checked the timing after replacing the dizzy it was at 30*'s i could get it back to 15ish by cranking it all the way to the front.....still sounds like mechanical timing to me

  15. #15
    The Repair Man
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    Quote Originally Posted by georgethefierce View Post
    changed dizzy, start car up, running like garbage with a CEL, the car has no ignition switch just toggles for fuel pump and push button ignition, how can I check the CEL? fwiw when i checked the timing after replacing the dizzy it was at 30*'s i could get it back to 15ish by cranking it all the way to the front.....still sounds like mechanical timing to me
    are you running a stock pulley? How did you get the car into timing mode?.
    Mike
    92 SE-R SR20VE-T 6262 Powered 535whp and 380lbft @22psi
    http://www.cardomain.com/id/cortrim1
    http://www.av-engineered.com/

  16. #16
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    not a stock pulley, we marked TDC on the aftermarket pulley, I get it into timing mode by revving it up 3x and pulling the TPS sensor.

  17. #17
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    well, the problem is solved.....and you wont believe it

    I had been wrecked the last race....apparently i was hit hard enough to knock the daughter board loose off the pins.....went to check the ECU and heard a rattle, sure enough....

    thanks all for the help

  18. #18
    The Repair Man
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    Quote Originally Posted by georgethefierce View Post
    well, the problem is solved.....and you wont believe it

    I had been wrecked the last race....apparently i was hit hard enough to knock the daughter board loose off the pins.....went to check the ECU and heard a rattle, sure enough....

    thanks all for the help
    damn that sucks.
    Mike
    92 SE-R SR20VE-T 6262 Powered 535whp and 380lbft @22psi
    http://www.cardomain.com/id/cortrim1
    http://www.av-engineered.com/

 

 

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