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View Full Version : sr20det timing question


billiam
05-03-2012, 06:51 AM
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 (http://www.frsport.com/How-To-Set-Crank-Angle-Sensor--CAS--Timing-on-the-SR20DET-Engine_t_25.html) ). 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?



http://i183.photobucket.com/albums/x81/williampatrick/yuppp.jpg

obsolete
05-03-2012, 07:50 AM
you have to keep hand cranking it until all three line up

japslapsilvia
05-03-2012, 11:00 AM
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

Jybfan04
05-03-2012, 11:38 AM
So all three have to line up?

What makes the crank line up with the timing chain and cams?

05-03-2012, 11:39 AM
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.

http://i26.photobucket.com/albums/c140/mr3kgt/JDM%20240sx/Rebuild/IMG_2148Large.jpg

jvega
05-03-2012, 03:35 PM
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..

japslapsilvia
05-03-2012, 08:51 PM
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

jvega
05-03-2012, 10:06 PM
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.

codyace
05-03-2012, 10:12 PM
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.

billiam
05-03-2012, 11:19 PM
Thanks for the replys, updated the first post.