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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Sound Deadening Rocker Covers ?

  • Thread starter Thread starter KiwiGT
  • Start date Start date Jan 14, 2009
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KiwiGT

Member
Apr 1, 2005
95
0
6
Australia
Jan 14, 2009
#1
  • Jan 14, 2009
  • #1
In a previous post I learned that my noisy tappets on my Roush 342R engine are a feature of an hydraulic roller cam + roller rockers. The 5.0 mustang Cobra of 94/95 used factory dual layer rocker covers with a sound deadening epoxy material to quieten down the rattling of the roller rockers. I would like to diminsh the noise of my roller rockers.

I live outside the U.S and don't have easy access to a Ford dealership to attempt to purchase the factory cobra covers (if they are stil available - I can't see them listed in the FRPP catalogue)

Can anybody suggest a source for factory or aftermarket sound deadening rocker covers to suit 5.0 AFR heads and roller rockers please ?
 

65ShelbyClone

Founding Member
Sep 9, 2000
4,675
38
119
Antelope Valley, SoCal
Jan 14, 2009
#2
  • Jan 14, 2009
  • #2
You could use the latemodel covers with spacers. Cast aluminum is going to be better than aftermarket steel.

I don't know why your valvetrain is noisy enough to be a nuisance. Hydraulic cams are typically are not. I have a hydraulic roller with '93 Cobra rockers(Crane rollers) and I can only slightly hear them on occasion, but usually I cannot.
 
K

KiwiGT

Member
Apr 1, 2005
95
0
6
Australia
Jan 14, 2009
#3
  • Jan 14, 2009
  • #3
Thanks. My rockers are really noisy - the engine clatters away like a diesel in the rocker area !

i presume the late model valve covers have the sound deadening material in them ?
 

65ShelbyClone

Founding Member
Sep 9, 2000
4,675
38
119
Antelope Valley, SoCal
Jan 14, 2009
#4
  • Jan 14, 2009
  • #4
KiwiGT said:
i presume the late model valve covers have the sound deadening material in them ?
Click to expand...

I have never heard anyone say that they do and I know for sure that nothing prior to '94 did. Actually, I haven't heard that any of them have sound deadener.

My 302 has cast Mickey Thompson valve covers with no baffles and the valvetrain noise is faint at worst. It was the same way when I had stock '89 covers on it too.
 

mrmustangman357

Member
Feb 11, 2007
763
3
18
Jan 14, 2009
#5
  • Jan 14, 2009
  • #5
your lifters should not make a noticeable noise, especially for hyd. cam. did you go finger tight +3/4 turn on the lash?
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Jan 14, 2009
#6
  • Jan 14, 2009
  • #6
The 93 Cobra's 5.0 was the only application for these covers I'm aware of. Try Ebay. As for the noise, are you sure it's the valve train and not detonation?
 

67coupestang

Founding Member
May 31, 2002
509
2
19
Jan 15, 2009
#7
  • Jan 15, 2009
  • #7
I Wonder if you could paint them with something? Like a truck bed liner, although i dont know about the temps... but like previously mentioned are you sure you're not masking some other problem?
 

DK832

New Member
Apr 11, 2006
291
0
0
Copenhagen, DK
Jan 15, 2009
#8
  • Jan 15, 2009
  • #8
[edit]
 
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