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topend noise

  • Thread starter Thread starter corey5988
  • Start date Start date Aug 22, 2010
C

corey5988

New Member
Mar 21, 2008
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Aug 22, 2010
#1
  • Aug 22, 2010
  • #1
I have a ticking coming from the rear of my drivers side head/valve cover. It does it on start up and doesn't go away. I bought the car already built (306c.i. forged Scat, 9.5:1 cr, worked GT40P heads, 1.7rr, and supposedly a custom cam that I don't have specs for, as far as internals). I'm thinking that it is a rocker since it doesn't go away on warm up. I was told by someone that they thought it was a broken pushrod, but I'm thinking against that as I haven't had a change in drivability/power. Verdict?
 

ACSPONY

20+ Year Stangneter
Oct 10, 2004
711
2
19
Ohio
Aug 22, 2010
#2
  • Aug 22, 2010
  • #2
Does the ticking increase with engine speed?
 
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corey5988

New Member
Mar 21, 2008
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Aug 23, 2010
#3
  • Aug 23, 2010
  • #3
ACSPONY said:
Does the ticking increase with engine speed?
Click to expand...

Yes.
 

will1992

Member
Aug 25, 2005
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16
Aug 23, 2010
#4
  • Aug 23, 2010
  • #4
have you pulled codes or anuthing. you might have developed an exhaust leak have you worked on the exhaust lately
 

ACSPONY

20+ Year Stangneter
Oct 10, 2004
711
2
19
Ohio
Aug 23, 2010
#5
  • Aug 23, 2010
  • #5
I'd check for an exhaust leak first. Get a mechanic's stethoscope if it's not the exhaust and poke around. I had ticking also and I need to get my rockers re-adjusted on cylinders 2 and 3.
 
C

corey5988

New Member
Mar 21, 2008
49
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0
Aug 23, 2010
#6
  • Aug 23, 2010
  • #6
will1992 said:
have you pulled codes or anuthing. you might have developed an exhaust leak have you worked on the exhaust lately
Click to expand...

Haven't pulled any codes. I haven't touched the headers since I've had it. It's coming directly from the valve cover.
 

RangerJoe

I leave the horn on while driving
15 Year Member
Apr 26, 2010
2,560
1,146
184
Georgia
Aug 23, 2010
#7
  • Aug 23, 2010
  • #7
Hey man, I have the exact same thing going on. Ticking from driver's side valve cover. I too bought my car already built (302, GT40's, 1.7 RR & TFS 1 cam).

I pulled the valve covers the other night and found that I could just barely rock to of the arms back and forth, just enough to make a clicking sound. I pulled the arms and checked the valve tips, the rollers on the arms, the pushrods and the lifters. None of them had any signs of wear or any damage.

My rocker arms are pedestal mount, I don't know if this is what you have or not. I suspect that the pushrods in my car could literally be a hair longer. I am planning on replacing my cam soon, so I just put it all back together. Since there was no wear or damage on the valvetrain, I figured no harm done. The car was built a little over a year ago, so it seems to be doing fine with the minor ticking.

You will have to check yours out and see what your condition is. For me, it wasn't bad. But I would check yours just to make sure.
 
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corey5988

New Member
Mar 21, 2008
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Aug 24, 2010
#8
  • Aug 24, 2010
  • #8
I pulled the drivers side valve cover yesterday and couldn't find anything visually wrong, so I started feeling of the rockers. There were two that had vertical play in them, so I'm hoping after I get them set properly and everything back together the tick will be cured.
 
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corey5988

New Member
Mar 21, 2008
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0
Aug 24, 2010
#9
  • Aug 24, 2010
  • #9
I'm at a loss. I got them all adjusted right and torqued to 26 ft. lbs. Still got the ticking. Can a rocker be bad and have no visual damage? Also I didn't notice on the drivers side, but when I was doing the passenger side there were 1/8"-1/4" steel spacers under the channel that the pedestals sit in. I'm guessing they ordered the pushrods too long and used them to shim so they could get it adjusted right. Shouldn't have anything to do with the click though, as it just started making the noise.
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
8,914
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a van down by the river
Aug 25, 2010
#10
  • Aug 25, 2010
  • #10
Hitting the valve covers?
 

93fox5.0

New Member
May 24, 2010
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Hallettsville, TX
Aug 25, 2010
#11
  • Aug 25, 2010
  • #11
maybe u need a valve adjustment? i have the exact same problem except on the passenger side i havent had the time or the will power to take a look at it yet tho
 
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corey5988

New Member
Mar 21, 2008
49
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0
Aug 26, 2010
#12
  • Aug 26, 2010
  • #12
If they were hitting the valve covers they would have hit them before. And I just adjusted the rockers and it's still doing it. I'm replacing the header gaskets today though.
 

93fox5.0

New Member
May 24, 2010
100
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0
Hallettsville, TX
Aug 26, 2010
#13
  • Aug 26, 2010
  • #13
let me kno if that solves ur problem who knos that may be my problem as well
 
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corey5988

New Member
Mar 21, 2008
49
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0
Aug 27, 2010
#14
  • Aug 27, 2010
  • #14
Problem solved...sort of. It stopped, but after a few miles started back up. I guess I didn't get the bolts tight enough. It was definatly the problem though.
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
8,914
1,332
204
a van down by the river
Aug 27, 2010
#15
  • Aug 27, 2010
  • #15
What you come up with?
 
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