Re: T&D rocker problem
[Re: oldguy]
#1890772
08/13/15 02:06 AM
08/13/15 02:06 AM
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Joined: Jan 2003
Posts: 19,395 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,395
Las Vegas
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And FWIW I have NEVER broken a T&D part and most here would think we run pretty high spring loads, up to 1270lbs open. Everything has to be correct if you are having an issue like this there is something not right.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: T&D rocker problem
[Re: oldguy]
#1890868
08/13/15 10:39 AM
08/13/15 10:39 AM
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Joined: Dec 2003
Posts: 901 oh
julian2007
super stock
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super stock
Joined: Dec 2003
Posts: 901
oh
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I have the very same problem with a set of -1 heads I for get the exact lash but what we found was the lash was too loose and it let the push rod drop and work on the cup. I lashed them .005 tighter and fixed the problem. what is your lash procedure? ie temp, how much ect.
Sorry I don't know you and not to sound like a ass but you cannot lash them cold per card specs if you do on t&d's you will have that exact problem when it gets hot they will be way too loose and destroy the edge of the cup. Those heads will grow quite a bit when you warm them up and you will loose lash
Again I had the same problem we were trying different setups and got them too loose and it did the same thing. Bruce
Last edited by julian2007; 08/13/15 10:41 AM.
God made cold beer,good friends,hot ladies and race cars don't spit in his face by pi$$ing and moaning about how life sucks!!!
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Re: T&D rocker problem
[Re: oldguy]
#1891051
08/13/15 03:26 PM
08/13/15 03:26 PM
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Joined: Jan 2003
Posts: 19,395 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,395
Las Vegas
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The rocker is not riding off the backside of the stem is it??? Sure looke like it might be getting close. How does the sweep look?
Last edited by Al_Alguire; 08/13/15 03:27 PM.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: T&D rocker problem
[Re: Al_Alguire]
#1891082
08/13/15 04:31 PM
08/13/15 04:31 PM
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Joined: Dec 2003
Posts: 901 oh
julian2007
super stock
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super stock
Joined: Dec 2003
Posts: 901
oh
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what are you lashing them at?
God made cold beer,good friends,hot ladies and race cars don't spit in his face by pi$$ing and moaning about how life sucks!!!
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Re: T&D rocker problem
[Re: julian2007]
#1891087
08/13/15 04:35 PM
08/13/15 04:35 PM
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Joined: Dec 2003
Posts: 901 oh
julian2007
super stock
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super stock
Joined: Dec 2003
Posts: 901
oh
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sorry re read your post .010 cold. aluminum block or iron? what are they growing too?
God made cold beer,good friends,hot ladies and race cars don't spit in his face by pi$$ing and moaning about how life sucks!!!
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Re: T&D rocker problem
[Re: oldguy]
#1891223
08/13/15 07:35 PM
08/13/15 07:35 PM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Well, the pushrod tips and the adjusters that that happened to are not usable anymore. Those adjusters are shallow to begin with, and now they are damaged enough that even tighter lash will likely not solve the problem. New pushrods and adjusters with tighter lash settings will fix ya up. The only way that would happen is if either the pushrod is contacting something and deflecting it, or the lash is to wide at the temps it runs.
"use it 'till it breaks, replace as needed"
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Re: T&D rocker problem
[Re: TRENDZ]
#1891384
08/13/15 10:30 PM
08/13/15 10:30 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
I Live Here
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I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
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looks to me like the rocker shaft needs to be raised, tip is too inboard on the tip at no lift and the roller is to far out at lift, looks like the geometry is off, should be more centered to the valve tip at both ends of the sweep and the roller in the center at mid lift,,just my opinion your opinions may vary.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: T&D rocker problem
[Re: dartman366]
#1891468
08/13/15 11:59 PM
08/13/15 11:59 PM
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Joined: Jul 2013
Posts: 561 USA
B3RE
mopar
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mopar
Joined: Jul 2013
Posts: 561
USA
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looks to me like the rocker shaft needs to be raised, tip is too inboard on the tip at no lift and the roller is to far out at lift, looks like the geometry is off, should be more centered to the valve tip at both ends of the sweep and the roller in the center at mid lift,,just my opinion your opinions may vary. I agree, the shaft needs to be raised considerably. We may disagree on the sweep, but right now it has to be over .100". For example, even a net valve lift of .750" will have less than .050" sweep when properly set up. Raising the shaft will also straighten the pushrod out when the valve is on the seat.
Mike Beachel
I didn't write the rules of math nor create the laws of physics, I am just bound by them.
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