ticking, need help. video
ticking, need help. video I have a 03 Z06 with 7,000 miles on it and I recently installed AFR heads, MTI G1 cam, electric water pump, new timing chain, ported oil pump, 30 lb injectors, hardened pushrods, yella terra rockers, ASP pulley, and dynatech headers. I heat cycled the springs for 4 times. I have driven the car several times and the car has been tuned. Since the install I have put approximately 150 miles on the car. The car and the valve train have been extremely quiet until today. I drove the car to a buddy’s house and there was no sound just the normal sewing machine and injector sounds. I took the car out and got on it one time and then when I came back there was a loud ticking sound.
The sound is not coming from the rockers because they are quiet but it sounds like it is coming from the center of the engine right below the throttle body. I took off the belts and ran it to make sure it wasn’t a pulley. I pulled the rockers and the pushrods and they are all fine and the springs are good too. My oil pressure is 40 and increases like it should when I increase RPM’s. The tick is also related to engine speed. More engine speed = quicker tick. The car runs good and drives good. What could the sound be? I have attached a short video for the ticking sound.
Ticking Video
The sound is not coming from the rockers because they are quiet but it sounds like it is coming from the center of the engine right below the throttle body. I took off the belts and ran it to make sure it wasn’t a pulley. I pulled the rockers and the pushrods and they are all fine and the springs are good too. My oil pressure is 40 and increases like it should when I increase RPM’s. The tick is also related to engine speed. More engine speed = quicker tick. The car runs good and drives good. What could the sound be? I have attached a short video for the ticking sound.
Ticking Video
Usually that tick sound is a valve train. It is fairly loud (which a video usually makes it sound worse than it is...)
How did you check the springs? Just visually to make sure none of them are broken?
I have never actually heard a lifter tick, but that is another thing to consider especially if you are sure it is coming from inside the motor.
What are the specs on that cam?
How did you check the springs? Just visually to make sure none of them are broken?
I have never actually heard a lifter tick, but that is another thing to consider especially if you are sure it is coming from inside the motor.
What are the specs on that cam?
Originally Posted by 99 TA
I have a 03 Z06 with 7,000 miles on it and I recently installed AFR heads, MTI G1 cam, electric water pump, new timing chain, ported oil pump, 30 lb injectors, hardened pushrods, yella terra rockers, ASP pulley, and dynatech headers. I heat cycled the springs for 4 times. I have driven the car several times and the car has been tuned. Since the install I have put approximately 150 miles on the car. The car and the valve train have been extremely quiet until today. I drove the car to a buddy’s house and there was no sound just the normal sewing machine and injector sounds. I took the car out and got on it one time and then when I came back there was a loud ticking sound.
The sound is not coming from the rockers because they are quiet but it sounds like it is coming from the center of the engine right below the throttle body. I took off the belts and ran it to make sure it wasn’t a pulley. I pulled the rockers and the pushrods and they are all fine and the springs are good too. My oil pressure is 40 and increases like it should when I increase RPM’s. The tick is also related to engine speed. More engine speed = quicker tick. The car runs good and drives good. What could the sound be? I have attached a short video for the ticking sound.
Ticking Video
The sound is not coming from the rockers because they are quiet but it sounds like it is coming from the center of the engine right below the throttle body. I took off the belts and ran it to make sure it wasn’t a pulley. I pulled the rockers and the pushrods and they are all fine and the springs are good too. My oil pressure is 40 and increases like it should when I increase RPM’s. The tick is also related to engine speed. More engine speed = quicker tick. The car runs good and drives good. What could the sound be? I have attached a short video for the ticking sound.
Ticking Video
That sounds like a lifter. I was at first gonna say pushrod/loose plug wire/loose rocker nut,but if its coming from the center and is that loud I would say lifter. That was very loud.
He stopped over my house today.
When he first got to my place, the car sounded normal. He went for a drive to gather some data for me. When he got back, I made a few minor changes to the tune, Idle table. He took the car for a ride again and when he came back 20 min later, we noticed a slight tick, and then as it idled more, it got louder to the level in the video.
With all the belts off, its in the engine for sure, it sounds like a metallic clicking/hitting in person.
When he first got to my place, the car sounded normal. He went for a drive to gather some data for me. When he got back, I made a few minor changes to the tune, Idle table. He took the car for a ride again and when he came back 20 min later, we noticed a slight tick, and then as it idled more, it got louder to the level in the video.
With all the belts off, its in the engine for sure, it sounds like a metallic clicking/hitting in person.
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I double checked the pushrods, rockers, exhaust flange bolts, ect and everything is tight and right. I think it might be a lifter because the sound is coming from the center of the engine and not the sides. Would any of the pushrods be loose is the lifter collapsed/bad? What would cause a lifter to go bad? The valve springs are the AFR upgrade springs good for .650 lift and the cam is a MTI G1 228/232 .588/.575 113 LSA. I just don’t know why a lifter would go bad when they only have 7,000 miles on them and the car has run like a champ the past few days. The oil pressure is also good. Anyone have a recommendation for good replacement lifters if needed?
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Originally Posted by 99 TA
I double checked the pushrods, rockers, exhaust flange bolts, ect and everything is tight and right. I think it might be a lifter because the sound is coming from the center of the engine and not the sides. Would any of the pushrods be loose is the lifter collapsed/bad? What would cause a lifter to go bad? The valve springs are the AFR upgrade springs good for .650 lift and the cam is a MTI G1 228/232 .588/.575 113 LSA. I just don’t know why a lifter would go bad when they only have 7,000 miles on them and the car has run like a champ the past few days. The oil pressure is also good. Anyone have a recommendation for good replacement lifters if needed?
I've heard to stay away from CompR lifters. Morels are the best. 
Teching In
Joined: Apr 2006
Posts: 16
Likes: 0
Originally Posted by 99 TA
I double checked the pushrods, rockers, exhaust flange bolts, ect and everything is tight and right. I think it might be a lifter because the sound is coming from the center of the engine and not the sides. Would any of the pushrods be loose is the lifter collapsed/bad? What would cause a lifter to go bad? The valve springs are the AFR upgrade springs good for .650 lift and the cam is a MTI G1 228/232 .588/.575 113 LSA. I just don’t know why a lifter would go bad when they only have 7,000 miles on them and the car has run like a champ the past few days. The oil pressure is also good. Anyone have a recommendation for good replacement lifters if needed?
that is exactly what my car does, and i have also checked for exhaust leaks (non) taken off my intake to make sure it wasnt leaking, retorqued (not it) taken the rockers off and check them, retorqued, as well as checked the pushrods (not it either) so im left to assume its a lifter as well. i'd like to know what you come up with, so ill subscribe to this thread. my car also runs great despite this ticking...
Jon
Jon
Teching In
Joined: Apr 2006
Posts: 16
Likes: 0
Originally Posted by SilverStreak1830
that is exactly what my car does, and i have also checked for exhaust leaks (non) taken off my intake to make sure it wasnt leaking, retorqued (not it) taken the rockers off and check them, retorqued, as well as checked the pushrods (not it either) so im left to assume its a lifter as well. i'd like to know what you come up with, so ill subscribe to this thread. my car also runs great despite this ticking...
Jon
Jon
ok, looks like he is not going to get on line....
He pulled the valve covers off and checked all the usual stuff, springs, rockers, pushrods. Everything looked perfect. He put the stock rockers back on for the hell of it and it still made the noise. After that he put everything back the way it was and was thinking that maybe he should pull the front of the engine apart.
Pulled the water pump off, then the timing cover and BAM, there it was, A CAM SPROCKET BOLT WAS LOOSE HITTING THE TIMING COVER! There were some nice marks on the timing cover and the bolt head got a tad buggered up.
He couldn't beleive it. He used Blue Loctite and torqued it to spec. He is very **** like myself when doing this **** and doubles or triple checks everything.
Car is back together now with no problems...
He pulled the valve covers off and checked all the usual stuff, springs, rockers, pushrods. Everything looked perfect. He put the stock rockers back on for the hell of it and it still made the noise. After that he put everything back the way it was and was thinking that maybe he should pull the front of the engine apart.
Pulled the water pump off, then the timing cover and BAM, there it was, A CAM SPROCKET BOLT WAS LOOSE HITTING THE TIMING COVER! There were some nice marks on the timing cover and the bolt head got a tad buggered up.
He couldn't beleive it. He used Blue Loctite and torqued it to spec. He is very **** like myself when doing this **** and doubles or triple checks everything.
Car is back together now with no problems...
Originally Posted by Billiumss
ok, looks like he is not going to get on line....
He pulled the valve covers off and checked all the usual stuff, springs, rockers, pushrods. Everything looked perfect. He put the stock rockers back on for the hell of it and it still made the noise. After that he put everything back the way it was and was thinking that maybe he should pull the front of the engine apart.
Pulled the water pump off, then the timing cover and BAM, there it was, A CAM SPROCKET BOLT WAS LOOSE HITTING THE TIMING COVER! There were some nice marks on the timing cover and the bolt head got a tad buggered up.
He couldn't beleive it. He used Blue Loctite and torqued it to spec. He is very **** like myself when doing this **** and doubles or triple checks everything.
Car is back together now with no problems...
He pulled the valve covers off and checked all the usual stuff, springs, rockers, pushrods. Everything looked perfect. He put the stock rockers back on for the hell of it and it still made the noise. After that he put everything back the way it was and was thinking that maybe he should pull the front of the engine apart.
Pulled the water pump off, then the timing cover and BAM, there it was, A CAM SPROCKET BOLT WAS LOOSE HITTING THE TIMING COVER! There were some nice marks on the timing cover and the bolt head got a tad buggered up.
He couldn't beleive it. He used Blue Loctite and torqued it to spec. He is very **** like myself when doing this **** and doubles or triple checks everything.
Car is back together now with no problems...
Jon
Yep I couldn’t believe it myself. I have done several cam installs on my vehicles and my friends and I have never had a problem. I don’t know why there was a problem this time but the more I listened to it the more it sounded like it was coming from directly behind the water pump. The only thing that sucked is because it is a vette I had to pull the steering but the problem is fixed. I have a double timing chain and it seems like the stock bolt are short. I put in longer bolts that I had and put red loctite on this time. I still don’t know why the blue didn’t work or if it was because the stock bolts were not long enough but at least it’s fixed.
I still don’t know why the blue didn’t work or if it was because the stock bolts were not long enough but at least it’s fixed. 
