tap tap tap..
Thread Starter
TECH Regular
Joined: Jun 2006
Posts: 440
Likes: 0
From: Alamo Heights, Texas
tap tap tap.. I am getting a tapping sound that matches rev speeds.. it's never there when I start the car, but it's there after it warms up for a bit. It's pretty ******* loud, if I have the hood popped, it's really loud.
Loud enough to where I can actually hear it a bit in the car with open long tubes, but only at idle, or barely moving.
Any idea?
*edited title for inappropriate language.
Loud enough to where I can actually hear it a bit in the car with open long tubes, but only at idle, or barely moving.
Any idea?
*edited title for inappropriate language.
Last edited by JasonShort; Jan 9, 2007 at 07:10 AM.
On The Tree
Joined: Jul 2006
Posts: 101
Likes: 0
From: USS Abraham Lincoln
I'd say header leak? Had that problem before. Also, I managed to burn plug wires, and the arcing was sorta like that for me. Oh, and I also somehow got a plug to keep backing out, and you could hear the air going past it. Was mean. Between that, and the burned wire, I was loosing a lot of power.
how is it running besides the tapping? you might have a loose rocker arm you might check into it one way to tell if its an exhause leak is to put your car into first and take off you should be able to hear the ticking get up to about 35-40 and just let out of the gas and let it coast if it is still ticking then its not an exhaust leak
Last edited by My01SSCamaro; Jan 8, 2007 at 08:11 PM.
Yea, could be the Rockers if you have them. I got a tick too, but it hasn't gotten worse, and been there since I built the Motor. Everything is in the correct lash adjustments also.
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probably not an exhaust leak. it would leak when the motor is cold. I'm going to guess loose rocker. Prolly just need a little tightening.
Although this is pretty rare but since your saying that the noise is LOUD Check your oil for shavings because i had a very loud tap myself. That would lead you to a cam/lifter problem. It happend to me.
http://www.lt1engine.com/soundlib/40lt1badlifter.mpg
http://www.lt1engine.com/soundlib/41lt1badlifter.mpg
Stock cam and lifter:
http://www.lt1engine.com/soundlib/lifter1.jpg
http://www.lt1engine.com/soundlib/lifter2.jpg
Although this is pretty rare but since your saying that the noise is LOUD Check your oil for shavings because i had a very loud tap myself. That would lead you to a cam/lifter problem. It happend to me.
http://www.lt1engine.com/soundlib/40lt1badlifter.mpg
http://www.lt1engine.com/soundlib/41lt1badlifter.mpg
Stock cam and lifter:
http://www.lt1engine.com/soundlib/lifter1.jpg
http://www.lt1engine.com/soundlib/lifter2.jpg
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Originally Posted by luckyou03
probably not an exhaust leak. it would leak when the motor is cold. I'm going to guess loose rocker. Prolly just need a little tightening.
Although this is pretty rare but since your saying that the noise is LOUD Check your oil for shavings because i had a very loud tap myself. That would lead you to a cam/lifter problem. It happend to me.
http://www.lt1engine.com/soundlib/40lt1badlifter.mpg
http://www.lt1engine.com/soundlib/41lt1badlifter.mpg
Stock cam and lifter:
http://www.lt1engine.com/soundlib/lifter1.jpg
http://www.lt1engine.com/soundlib/lifter2.jpg
Although this is pretty rare but since your saying that the noise is LOUD Check your oil for shavings because i had a very loud tap myself. That would lead you to a cam/lifter problem. It happend to me.
http://www.lt1engine.com/soundlib/40lt1badlifter.mpg
http://www.lt1engine.com/soundlib/41lt1badlifter.mpg
Stock cam and lifter:
http://www.lt1engine.com/soundlib/lifter1.jpg
http://www.lt1engine.com/soundlib/lifter2.jpg
*edited for inappropriate language
Last edited by JasonShort; Jan 9, 2007 at 07:17 AM.
motor just started tapping one day, and got progressively louder. Only made noise at idle and low rpm. I dont know if it was the cam or lifter that failed. This problem is a good thing tho, it made me build the car i never thought i would.
well thats good atleast something good came of it 
looks like something got inbetween the cam/lifter like dirt and ground it but damn it would have taken awhile i'd think
looks like something got inbetween the cam/lifter like dirt and ground it but damn it would have taken awhile i'd think Thread Starter
TECH Regular
Joined: Jun 2006
Posts: 440
Likes: 0
From: Alamo Heights, Texas
Yeah, my engine sounds like yours... anyway for e to double check if it's rockers instead? Cause I swapping engines anyway... so not camming this one, but I wanted to sell this complete swap from my car, and I can't sell junk ;p
I had a chirping sound that kind of sounded like metal on metal. Here is the thread on that whole shabang. Turns out it was a rocker that came off the valve.
https://ls1tech.com/forums/showthrea...8&page=1&pp=20
Pull off your valve covers and re-adjust the valves at zero lash with the proper pre-load. It is pretty easy to do, and I'd imagine that could be your problem.
Here is a nice writeup Shoe Box did on adjusting them:
http://shbox.com/1/4th_gen_tech2.html#adjust_valves
https://ls1tech.com/forums/showthrea...8&page=1&pp=20
Pull off your valve covers and re-adjust the valves at zero lash with the proper pre-load. It is pretty easy to do, and I'd imagine that could be your problem.
Here is a nice writeup Shoe Box did on adjusting them:
http://shbox.com/1/4th_gen_tech2.html#adjust_valves
