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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 05-03-2012, 06:51 AM   #1
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sr20det timing question

Edit- Thanks for the comments guys, I got the idle to be very steady at 1200rpm after doing the timing. Im gunna turn the idle down on the iacv to try and get 900. Sadly it is still running super rich and bogging like a mofo. I replaced the ECU Temperature Sensor thinking that might be the problem but nothing. Do you think its my injector seals or o2 sensor that would cause me running super rich?


So i just installed a new sr, and the timing was off. I followed frsport how to ( How To Set Crank Angle Sensor (CAS) Timing on the SR20DET Engine ). My question is why is my crank pulley so far off the markings when everything else is lined up? Will it line up once i get it running and use a timing gun?




Last edited by billiam; 05-04-2012 at 12:26 AM..
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Old 05-03-2012, 07:50 AM   #2
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you have to keep hand cranking it until all three line up
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Old 05-03-2012, 11:00 AM   #3
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Forget about using the colored links. There is another procedure which involves counting the links ...so set the crank to timing mark... With both cam lobes on cylinder one facing outward (intake &exhaust cam) you will be at tdc cylinder 1...then you can count the links and adjust accordingly.I can't remember the count off the top of my head but its out there somewhere ...IIRC RS enthalapy had it on their site
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Old 05-03-2012, 11:38 AM   #4
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So all three have to line up?

What makes the crank line up with the timing chain and cams?
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Old 05-03-2012, 11:39 AM   #5
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FORGET ABOUT THE MARKS ON THYE CHAIN. spin the crank pulley until its at TDC, making sure that the piston number 1 cam lobes are facing away (or outward). now, make sure that exhaust cam PIN, that holds the cam gear in place, is facing 12 o' clock and count 10 links fron the exhaust cam dot to the intake cam dot.

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Old 05-03-2012, 03:35 PM   #6
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Hey my chain does not have any marks on it, so i always set the TDC when the notches on the cam sprockets are on top like they should be.. But im having a small issue right now with the timing jumping around..
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Old 05-03-2012, 08:51 PM   #7
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Quote:
Originally Posted by jvega View Post
Hey my chain does not have any marks on it, so i always set the TDC when the notches on the cam sprockets are on top like they should be.. But im having a small issue right now with the timing jumping around..
Umm...well let's think for a second...if your cams and crank are/were missaligned you process will never work..read above...also you jacked the op's thread.. search this shit has already been covered
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Old 05-03-2012, 10:06 PM   #8
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Quote:
Originally Posted by japslapsilvia View Post
Umm...well let's think for a second...if your cams and crank are/were missaligned you process will never work..read above...also you jacked the op's thread.. search this shit has already been covered
What if you stop and think for a second.. I was just letting him know that i had a similar problem, and i didn't "jack" any thread, we are all here to help each other out in any way possible.
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Old 05-03-2012, 10:12 PM   #9
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Quote:
Originally Posted by jvega View Post
Hey my chain does not have any marks on it, so i always set the TDC when the notches on the cam sprockets are on top like they should be.. But im having a small issue right now with the timing jumping around..
The timing light will never be consistant as far as where it shows up on the crank, nor will it be consistant in consult/NDS unless you lock the car into timing mode. There is no way for timing to 'jump around' on the mechanical sense of it all.
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Old 05-03-2012, 11:19 PM   #10
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Thanks for the replys, updated the first post.
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