|
Re: 470 stroker valvetrain issues
[Re: JohnRR]
#1284127
08/13/12 12:58 PM
08/13/12 12:58 PM
|
Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
Too Many Posts
|
Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
|
Quote:
Quote:
and who cares how many turns
And who cares how many turns you have!!
Some people care and it does matter, if his pushrods are too long or too short it could cause issues .
I mentioned that in my post, correct oiling.
|
|
|
Re: 470 stroker valvetrain issues
[Re: Texas_Charger]
#1284128
08/13/12 09:32 PM
08/13/12 09:32 PM
|
Joined: Feb 2005
Posts: 4,333 Prospect, PA
BSB67
master
|
master
Joined: Feb 2005
Posts: 4,333
Prospect, PA
|
Quote:
I turned the pushrods with my finger and slowly tightened the adjusters until i felt resistance, then tightened 2.5 turns for .08 the first time and 1.25 turns for .04 the second.
With many lifters it is very difficult to "feel" when you are at zero preload. It takes awhile to acquire the feel, and it is best to do it while watching the lifter to verify the results.
With the lifter on the base circle and the rocker adjustment sloppy loose, put the allen wrench in the adjuster and with it between your thumb and index finger turn slowly with no downward force and don't turn or even touch the pushrod. When you meet the slightest resistance, you're probably at zero. Adjust from there.
I think that others have said that the aluminum rockers are a little noiser than the steel ones on fast rate cam. I don't know this to be true.
|
|
|
Re: 470 stroker valvetrain issues
[Re: BSB67]
#1284129
08/13/12 10:11 PM
08/13/12 10:11 PM
|
Joined: May 2008
Posts: 322 San Diego, CA, United States
Texas_Charger
OP
enthusiast
|
OP
enthusiast
Joined: May 2008
Posts: 322
San Diego, CA, United States
|
I really appreciate all the responses. Hopefully I can get enough liberty tomorrow to pull the valve covers off and check everything over again. I'll set the preload at a more reasonable .03 and see if it solves anything.
One thing I hadn't thought of until now... isn't it true that the rocker shafts can be installed backwards as well as upside down? (i.e., there are four configurations that are possible and only one is right)?
I know they are not upside down but I never thought to check if they were backwards. One more thing to do tomorrow...
1971 Dodge Charger SE 470/727/3.91 Suregrip 2016 Dodge Challenger Hellcat, 6-speed 1980 Pontiac Trans Am, Y84, WS6 2002 Ram 2500 Cummins/6-speed/2WD/QC 1971 Ford F-350 Ranger
|
|
|
Re: 470 stroker valvetrain issues
[Re: Texas_Charger]
#1284131
08/13/12 11:34 PM
08/13/12 11:34 PM
|
Joined: Mar 2008
Posts: 5,746 Ontario, Canada
Dodgem
master
|
master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
|
As said above! I would be looking at the push rods binding on the outside of the intake ports. You always have to clearance them on stealth heads. friends was noisy as hell and I had clearanced them quite a bit as we were trying to get the lash right walla ports were holding some way over making it seem tight. More clearancing in car (not nice) and problem solved! Well that's my
|
|
|
|
|
|