Valvetrain noise help shop or advice needed

R

redvtech07

New Member
So I just finished getting my car together. 91 5.0. I put 1.7 roller rockers on it and they are NOISY. I have tried relashing them more times than I care to admit along with longer push rods.

Anyone know a good shop around here that won't kill me to take care of this problem? I really don't want to pay to have it done but I don't see much of an alternative.

Thanks!
 
Chris0nllyn

Chris0nllyn

Well-Known Member
redvtech07 said:
So I just finished getting my car together. 91 5.0. I put 1.7 roller rockers on it and they are NOISY. I have tried relashing them more times than I care to admit along with longer push rods.

Anyone know a good shop around here that won't kill me to take care of this problem? I really don't want to pay to have it done but I don't see much of an alternative.

Thanks!
Click to expand...

Where is "here"?

I assume you adjusted them at TDC?
 
bcp

bcp

In My Opinion
Sounds like you might have originally tightened down too much and possibley collapsed a lifter.
When you set the rockers did you make sure the lifter was on the cams base circle? (high point)
and last, are or were any of the pushrods bent.
 
StadEMS3

StadEMS3

Well-Known Member
PREMO Member
redvtech07 said:
So I just finished getting my car together. 91 5.0. I put 1.7 roller rockers on it and they are NOISY. I have tried relashing them more times than I care to admit along with longer push rods.

Anyone know a good shop around here that won't kill me to take care of this problem? I really don't want to pay to have it done but I don't see much of an alternative.

Thanks!
Click to expand...

Thought we had you fixed when you asked on SoMD Mustang Club Facebook page?

What BPC and Chrisonlynn said. Hope it works for ya.
 
R

redvtech07

New Member
I had the timing set wrong. I've actually tried it a couple of ways. Watched the exaust open, adjust intake...ect.

Crane says to find TDC on the valve and then go two revoloutions and make sure it is at TDC. I tried this today.. Still noisy. I am getting between 1/4 and 1 turn on all of them. I just dont get it.

I cranked it over for a 30 seconds before I stuck the covers back on....It's getting oil.

Rods are straight Lifters were new when the motor went back together.
 
R

redvtech07

New Member
I know this isn't right. But I had the stockers in which I think are 6.25 maybe and they were noisy. So I bought a set of 6.3 rather than actually measuring. I didn't want to take off the intake and convert a lifter.

After zero lash with the 6.3 rods its close to 1 full turn. at 20# torque
 
bcp

bcp

In My Opinion
back in the day we would tighten to zero backlash, the back off 1/4 to 3/8 of a turn.
then we would take a valve cover that we cut a section of the top out so a socket would get through it (keeps the oil from spewing) put it on, start the engine then following the firing order we would tighten the rockers down till they were silent.

one more question, are you certain that the lifters filled with oil? from what you said you are not using solid lifters.
 
GWguy

GWguy

*
bcp said:
back in the day we would tighten to zero backlash, the back off 1/4 to 3/8 of a turn.
then we would take a valve cover that we cut a section of the top out so a socket would get through it (keeps the oil from spewing) put it on, start the engine then following the firing order we would tighten the rockers down till they were silent.
Click to expand...

I used to do that too, on both solid and hydraulic lifters.

But if the rods are the wrong length, it could make a mess.
 
Chris0nllyn

Chris0nllyn

Well-Known Member
I'm thinking you should get a pushrod length checker and make sure you have the right length.

Who knows, if it is the pushrods, you could easily change them without dropping the coin for a mechanic to do it.
 
Gilligan

Gilligan

#*! boat!
PREMO Member
bcp said:
back in the day we would tighten to zero backlash, the back off 1/4 to 3/8 of a turn.
.
Click to expand...

Problem with that is..that was WAY back in the day. :buddies: Rocker arms have been torque-to-tighten with zero intrinsic adjustability for a long time now...since the late 60s on the Ford small block, for example.

I use rocker pedestal shims to "dial in" the lifter preload to about 1/2 turn from "initial contact and zero lash". That said, some of my roller rocker setups have always made some noise no matter how carefully I set them up.


Ford Racing M-6529-A302 - Ford Racing Rocker Arm Pedestal Shim Kits - Overview - SummitRacing.com
 
bcp

bcp

In My Opinion
Gilligan said:
Problem with that is..that was WAY back in the day. :buddies: Rocker arms have been torque-to-tighten with zero intrinsic adjustability for a long time now...since the late 60s on the Ford small block, for example.

I use rocker pedestal shims to "dial in" the lifter preload to about 1/2 turn from "initial contact and zero lash". That said, some of my roller rocker setups have always made some noise no matter how carefully I set them up.


Ford Racing M-6529-A302 - Ford Racing Rocker Arm Pedestal Shim Kits - Overview - SummitRacing.com
Click to expand...

almost all roller rockers make a certain degree of noise.
 
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