Cam installed now ticking
08-24-2011, 09:10 PM
#1
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Location: Millington, NJ
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Cam installed now ticking
I bought a matched cam kit from AI (220/226) with the exception of the 1.6 rockers. I bought those about 1 year ago from a board member. Install went fine. New LS7 lifters too. Using the pushrod tool the measurement came to 7.1. Soaked the lifters in oil prior to putting them in. I was not there for start up but pretty sure it made the noise from start up. Will ask tomorrow. It is definitely coming from the passenger side. Sounds like it is fron the rear area (used stethescope). Oil pressure is fine (same as before the cam install) Car drives fine (small trip around the block) Did a search and possible problems are:
Loose rocker - checked them while it was running all felt good. He is going to check them again in the morning when it is cold.
Collapsed lifter
Exhaust leak at the header flange. (I have Kooks with permaseal gaskets) Will have him check but it did not make the noise before cam install
Injector ticking - injectors were swapped over to powdercoated intake with new o-rings used (precautionary)
Loose sparkplug
It is definitely coming from the passenger side. Driver's side is the nomal sewing machine type sound
below are the videos first is idleing and second is idle and reving.
Let me know what you guys think. I have a dyno tuing appointment on Sat so I have to figure this out ASAP
http://s202.photobucket.com/albums/a...rrent=idle.mp4
http://s202.photobucket.com/albums/a...urrent=rev.mp4
Loose rocker - checked them while it was running all felt good. He is going to check them again in the morning when it is cold.
Collapsed lifter
Exhaust leak at the header flange. (I have Kooks with permaseal gaskets) Will have him check but it did not make the noise before cam install
Injector ticking - injectors were swapped over to powdercoated intake with new o-rings used (precautionary)
Loose sparkplug
It is definitely coming from the passenger side. Driver's side is the nomal sewing machine type sound
below are the videos first is idleing and second is idle and reving.
Let me know what you guys think. I have a dyno tuing appointment on Sat so I have to figure this out ASAP
http://s202.photobucket.com/albums/a...rrent=idle.mp4
http://s202.photobucket.com/albums/a...urrent=rev.mp4
Last edited by 97 CAIVIAROSS; 08-24-2011 at 09:34 PM. Reason: Fix the link
08-24-2011, 09:27 PM
#3
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Re: Cam installed now ticking
Oh and my other buddy said to check for a loose spark plug so I will add that to the list above
08-27-2011, 07:54 AM
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Re: Cam installed now ticking.. updated 08/27
Dam Hurricane...no dyno tune today!!
Actually it is quiet when first started but starts ticking again when it is warms after I have been driving a little while?? I picked it up let it idle for about 3 mins (no ticking) and drove about 20 miles when I pulled into the parking lot I heard the ticking. I have not had a chance to pinpoint where it is exactly coming from but when I stuck my head under the hood really quick it sounds like the passenger's side again?? What would cause it to do it once warmed up?? Any ideas or should they be adjusted again?
Actually it is quiet when first started but starts ticking again when it is warms after I have been driving a little while?? I picked it up let it idle for about 3 mins (no ticking) and drove about 20 miles when I pulled into the parking lot I heard the ticking. I have not had a chance to pinpoint where it is exactly coming from but when I stuck my head under the hood really quick it sounds like the passenger's side again?? What would cause it to do it once warmed up?? Any ideas or should they be adjusted again?
08-27-2011, 10:38 AM
#11
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Re: Cam installed now ticking
I know you put in "new" lifters, but I wonder if one of them is having a problem. Might not be a bad idea to install some new ones on that side....or swap all the ones on the drivers to the passengers side(and vice versa). See if the problem moves sides.
On the pushrod length.....have you done anything like decking the heads or block? If not, I see no reason to shorten the pushrod length from the stock 7.2".
For the possible header leak issue....loosen all the flange bolts and retighten them from the center out. Tightening them from the ends to the center could bind the flange and not allow it to seal.
On the pushrod length.....have you done anything like decking the heads or block? If not, I see no reason to shorten the pushrod length from the stock 7.2".
For the possible header leak issue....loosen all the flange bolts and retighten them from the center out. Tightening them from the ends to the center could bind the flange and not allow it to seal.
Last edited by ACE1252; 08-27-2011 at 10:50 AM.
08-27-2011, 10:53 AM
#12
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Re: Cam installed now ticking
I know you put in "new" lifters, but I wonder if one of them is having a problem. Might not be a bad idea to install some new ones on that side....or swap all the ones on the drivers to the passengers side(and vice versa). See if the problem moves sides.
On the pushrod length.....are you still running 1.5 rockers? Have you done anything like decking the heads or block? If not, I see no reason to shorten the pushrod length from the stock 7.2".
On the pushrod length.....are you still running 1.5 rockers? Have you done anything like decking the heads or block? If not, I see no reason to shorten the pushrod length from the stock 7.2".
I am running comp cams 1.6 pro magnum rockers and the heads have never been off the block. As instructed by AI the measuring tool included in the kit was used to get the measurement of the pushrods. It came out to 7.1. They said it should be between 7.1 and 7.2?
09-25-2011, 10:04 PM
#13
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Alright I have tried to adjust the rockers on pass side like 3 times.. 1/4, 1/2, 3/4 and eve went a little past that. They are still ticking on passenger side!!! WTF I loosened the poly lock and nut until I can hear it clacking, turned the nut back down until it stoped then set the preloaded from there. Anybody in north jersey that can stop by to take a look?
Thanks Derek
Thanks Derek
Last edited by 97 CAIVIAROSS; 09-26-2011 at 04:52 AM.
09-26-2011, 05:06 AM
#15
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Re: Cam installed now ticking
Dont remember the exact name on it but it was the adjustable one with the sizes etched right on the side that you turned to make it longer or shorter. One of my orginal lifters was tack welded so the plunger would not compress, sharpie was used on the valve stem tip to see the wear patter after the motor was turned over by hand. I was not at the shop for this step, but the guy that helped me out is a GM tech with 20+ years experience. I would bring it back for him to look at but a health issue came up and he wont be at the shop for a while. Pushrods are trickflow I ordered exactly what AI instructed me to (obviously minus the length) and verified the size on the package prior to installing them.