Hydraulic lifter noise? - Team Camaro Tech
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post #1 of 7 (permalink) Old Oct 2nd, 09, 01:23 PM Thread Starter
Tim
 
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Hydraulic lifter noise?

Hi guys, i'm a member from England with a 327 68 Camaro with a strange noise! Basically it sounds like all lifters rattling when backing of the throttle. If i apply slight throttle noise backs right off. Noise is def top end somewhere. Engine is standard spec with good oil pressure, any ideas before i start stripping it down.
Cheers...............Tim
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post #2 of 7 (permalink) Old Oct 2nd, 09, 04:10 PM
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Harry
 
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Re: Hydraulic lifter noise?

readjust lash might help ya.
if that dont work maybe the lifters are just worn out.
heres a good site to properly adjust HYD lifters.
http://www.centuryperformance.com/ad...h-spg-149.html


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post #3 of 7 (permalink) Old Oct 2nd, 09, 09:19 PM
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Re: Hydraulic lifter noise?

Is this on the road or stationary?
Have you a mechanics stethoscope they are only a few bucks
If backing off lifters till clack then tighten till no clack then 1/2 to 3/4 turn more dosent stop it...I would suspect detoation either from a curve to fast advamce or total too high or to miuch advance in the VA
Or a tappit is just touchiing the valve cover..inspect ..even with a magnificing glass
Or and this usually is real hard to trace the sound, a collapsed piston skirt ot cracked piston...both usually caused by too much adavance on a cold start.
The above one can hear with a mechanivs stethoscope, but tracing gets confusing, then put the car on a hoist and check the side of the block from underneath...usually one can hear it a little clearer normal underneath at certain rpms and load.

My Spelling is not incorrect...it is creative

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post #4 of 7 (permalink) Old Oct 7th, 09, 12:09 PM Thread Starter
Tim
 
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Re: Hydraulic lifter noise?

Cheers for the replies, the lifters and camshaft are fairly new but will try adjusting again to see if that cures the noise. Will keep you posted.
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post #5 of 7 (permalink) Old Oct 7th, 09, 01:32 PM
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Re: Hydraulic lifter noise?

Exhaust leak?

Steve
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post #6 of 7 (permalink) Old Oct 7th, 09, 01:50 PM
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Louie
 
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Re: Hydraulic lifter noise?

Camshaft broken in proper?

69 SS/RS Fathom Green 454 4 speed

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post #7 of 7 (permalink) Old Oct 8th, 09, 06:34 AM
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Charlie
 
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Re: Hydraulic lifter noise?

Could it be the throwout bearing if it's a standard shift car?

Charlie Knudsen 67 Camaro RS/SS 350 TKO 600, 4.10's, AFR 195 Street Heads, Comp 270H, Rhoads Lifters, Crane Ignition, Pertronix Dizzy, Performer RPM Q-Jet, Heavily Modified Q-Jet, Hooker Comp Headers, MagnaFlow 2 1/2", 144 Decibles(Alpine CDA-7998 Head Unit, RF X7 and RF 750X Amps, MB Quart Mid's & High's, Kicker L7 12" Solo Barics)
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