engine idle sound tick tick tick
Le Mans Master
Joined: Oct 2007
Posts: 6,149
Likes: 11
From: Greater Detroit Metro MI, when I'm not travelling.
Substituting the thick heavy cast iron exhaust manifolds for thinwall headers will allow a lot more valvetrain noise to come out. I started noticing it a lot more after my Kooks header install; it sounds like a metallic ticking.
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Does it sound like this?
Mez's engine on YouTube
The ticking or sewing machine sound is from the lifters and/or rocker arms due to the more aggressive cam profile. Not the headers. I did not notice any ticking sounds after the installation of the headers (Dynatech).
Mez's engine on YouTube
The ticking or sewing machine sound is from the lifters and/or rocker arms due to the more aggressive cam profile. Not the headers. I did not notice any ticking sounds after the installation of the headers (Dynatech).
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Drifting
Joined: May 2008
Posts: 1,621
Likes: 2
From: Petal Ms
St. Jude Donor '08-'11
Mine has the same noise, and my motor is not even the stock motor, but the first time I put it on the lift I could hear it big time and thought something was wrong. After taking a stethoscope to every part of the engine I decided it was just a noise that was resonating out of the headers. It almost seemed like it was coming mostly from the catalytic converters. I have since gutted them and will see if they still make the noise when I get it back together.
Le Mans Master<br><img src="/forums/images/ranks/5k-6k.gif" border="0">
Joined: May 2007
Posts: 5,404
Likes: 1
St. Jude Donor '08-'09
That can come from improperly torqued header bolts. Get your torque wrench and do them all over again. I had the same problem. I was amazed how little torque they require.
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Hell
Does it sound like this?
Mez's engine on YouTube
The ticking or sewing machine sound is from the lifters and/or rocker arms due to the more aggressive cam profile. Not the headers. I did not notice any ticking sounds after the installation of the headers (Dynatech).
Mez's engine on YouTube
The ticking or sewing machine sound is from the lifters and/or rocker arms due to the more aggressive cam profile. Not the headers. I did not notice any ticking sounds after the installation of the headers (Dynatech).
soo what should i do in this case replace the lifters and rockers or what ? please advise ....
Pro
Joined: Sep 2007
Posts: 747
Likes: 0
From: S. Jersey .............. Low 11sec club
St. Jude Donor '11
Installed my Kooks today and have the same low ticking sound come from the headers, but not a leak.
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
I agree for stock motors. In my case, when the new cam was installed, the noise was definitely more noticeable. So it probably is both lifters from the cam plus the stock injectors. Funny thing, after a couple thousand miles, the noise has decreased. Weird.
