Can't get bank 2 camshafts / sprockets to sit right

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Benzito82
Posts: 4
Joined: Sun Sep 17, 2023 7:19 pm
Car: 2004 Nissan Murano

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Yes, I am a rookie, so be gentle, but I didn't put my motor on top dead center like a dumb a** and now I have bank 1 lined up and the rest of the timing chain components but bank 2 just will not line up. I need help because I have the sickest feeling that my cams are bent, or maybe even worse. And by the way, the little nipple on the big sprocket broke as well.


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VStar650CL
Technical Expert
Posts: 11960
Joined: Thu Nov 12, 2020 1:25 pm
Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

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If you tried to turn the crank with the chains off, there's a pretty good possibility that a piston is ramming a valve and preventing one or more of the cams from moving. You need to turn all four cams in the same direction as you turned the crank until you reach a point where everything will line up again. It's a PITA, you open a giant can of worms when you pull the chains on an interference motor without lining up on #1 TDC first.

Benzito82
Posts: 4
Joined: Sun Sep 17, 2023 7:19 pm
Car: 2004 Nissan Murano

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Thanks appreciate the reply and so at this point I have the chain back on it and hitting all the marks got it turning pretty smoothly and I think I have everything lined up tdc.. both of the little pins broke on my sprocket so I had to modify them. I'm not sure how that's going to go so I drilled out where the pins broke off on the sprockets and drove a little small nails and then put washers behind the nail heads this will not be long-term, but just temporary until I get to go back to the junkyard I just want to see if it will start. Do you know what degrees are for the cams? Also, how do I match the cam caps?

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VStar650CL
Technical Expert
Posts: 11960
Joined: Thu Nov 12, 2020 1:25 pm
Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

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Dunno what you mean by degrees, but you can get the camshaft diameter and runout specs on EM-139 here:
https://www.nicoclub.com/service-manual ... 4%2Fem.pdf
To my knowledge, Nissan doesn't publish lift and duration specs for any of their cams.

The #1 cam bearing cap is different from the other three. The cam journals are precision-machined and bearingless, if oil clearance exceeds the spec (about 0.006" across the board) or the inner/outer journal diameters are out of spec, then you replace the cam, head, or both as necessary.


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