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I have installed N1 cams in my ve following JWT instructions (except for using 1/4" extension to block the sprockets when torquing them down to 100 ft lbs). I also noticed when I was tightening the intake side sprocket the bolt was rotating freely and then had more resistance then was rotating freely again (until I got it torqued down), indicating that possibly the sprocket was not going on evenly. During the first startup today, I noticed a knocking sound :mad
3 min after the startup), getting pretty loud which I wanted to ask on your opinions of what it might be , here is the video:
The noise seems to be louder in the front of the engine (sprocket area or chain tensioner/guide):
video-2011-11-14-20-26-02.mp4 video by wojtekj - Photobucket@@AMEPARAM@@file=http%3A%2F%2Fvid93.photobucket.com%2Falbums%2Fl56%2Fwojtekj%2Fvideo-2011-11-14-20-26-02.mp4@@AMEPARAM@@file=http%3A%2F%2Fvid93.photobucket.com%2Falbums%2Fl56%2Fwojtekj%2Fvideo-2011-11-14-20-26-02.mp4
I only idled it for 10 min after which I could not bare the noise before shutting down.
Here is the view of the sprockets before and after the install:
Before (stock cams):
![](http://i93.photobucket.com/albums/l56/wojtekj/2011-11-12192138.jpg)
After (N1s)
![](http://i93.photobucket.com/albums/l56/wojtekj/2011-11-13194605.jpg)
Let me know if you had similar issues, and the fix for this.
Thanks.
![:(](images/emoji/upset/frown.gif)
The noise seems to be louder in the front of the engine (sprocket area or chain tensioner/guide):
video-2011-11-14-20-26-02.mp4 video by wojtekj - Photobucket@@AMEPARAM@@file=http%3A%2F%2Fvid93.photobucket.com%2Falbums%2Fl56%2Fwojtekj%2Fvideo-2011-11-14-20-26-02.mp4@@AMEPARAM@@file=http%3A%2F%2Fvid93.photobucket.com%2Falbums%2Fl56%2Fwojtekj%2Fvideo-2011-11-14-20-26-02.mp4
I only idled it for 10 min after which I could not bare the noise before shutting down.
Here is the view of the sprockets before and after the install:
Before (stock cams):
![](http://i93.photobucket.com/albums/l56/wojtekj/2011-11-12192138.jpg)
After (N1s)
![](http://i93.photobucket.com/albums/l56/wojtekj/2011-11-13194605.jpg)
Let me know if you had similar issues, and the fix for this.
Thanks.
Last edited by Wojtekj
on 2011-11-15
at 02-35-35.