Bracket Talk
Adjuster nut on T&D shaft rockers
July 12, 2020, 01:52 PM
MatrixAdjuster nut on T&D shaft rockers
Give me some possible reasons why an adjuster nut may back off. My uncle is running a set on his brodix 16 degree heads and the #8 intake adjuster nut keeps backing off after maybe 15 runs. Kept him from running in the finals last night.
July 12, 2020, 02:17 PM
Mike RietowCheck the valve springs.
Valve float
Spring surge possibly too.
July 12, 2020, 03:56 PM
1320racerIs he torquing them to 20 ft./lbs.?
July 12, 2020, 04:15 PM
HR3377Check the lifter too
July 12, 2020, 04:18 PM
TheBlueTruckI'd vote also with underlying problems. If everything is right they wont move that much.
Regan Wilson Super Street 469C
July 12, 2020, 06:53 PM
imakehpFlat tappet cam?
.
Dave
F J B
July 12, 2020, 08:00 PM
MatrixMike - car didn't shift in the semis and bumped the limiter so that may be it
Ed - Good point. Ill find out
July 12, 2020, 11:32 PM
rustybad threads on adjuster and or nut ,seat area not machined square anymore,wild longshot look at the cup and pushrod for wear,maybe poor lube and combination af things,the pushrod is trying to turn the adjuster.this could be from bent pushrod
honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224
July 13, 2020, 08:48 AM
RPROGASX 3 on checking for something else that can cause the problem, like maybe a lifter. Worth looking into before something far worse /more expensive dies.
Bob
July 13, 2020, 10:00 AM
Curly1I would say you have some other issue causing it. Wrong length push rods, coil bind, valve float, lash problem or something.
https://postimg.cc/gallery/np3zpruo/"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.
Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.
4X NE2 CHAMPION. 2020 TDRA NE2 Champion
July 13, 2020, 06:02 PM
MatrixOk so he just text me and said that he adjusted the valves cold. He got lucky. Pushrod wasn't bent but he's gonna replace it. The cup for the pushrod on the rocker arm was pretty beat up too.
July 13, 2020, 06:49 PM
1320racerno issue with adjusting them hot or cold. IMO, no reason to adjust them hot after the first time. adjusting them "cold" is safer and no mess
July 13, 2020, 09:53 PM
rustyadjusting cold is fine but must be tighter than hot setting.and i will add after setting them cold and checking hot and rechecking cold i have learned that all of them dont grow exactly the same.close enough though
honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224
July 13, 2020, 10:27 PM
Curly1The first time I adjust them I do it hot to specs. Then I let it cool and check it again to get the cold specs. It is about .002 difference on my motor. Really does not matter if you do it hot or cold as long as you end up with right lash when it is hot.
https://postimg.cc/gallery/np3zpruo/"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.
Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.
4X NE2 CHAMPION. 2020 TDRA NE2 Champion
July 15, 2020, 08:01 AM
MatrixHe may not have checked them hot. Not sure. All he said was he checked them cold. We will see this coming weekend.
July 15, 2020, 08:59 AM
Mike Rietowquote:
Originally posted by Matrix:
He may not have checked them hot. Not sure. All he said was he checked them cold. We will see this coming weekend.
Look on the bright side.
If it ever doesn't make the shift again, on time. Ya'll will now know the maintenance needed to make it up for the following round.
July 15, 2020, 09:06 AM
TheBlueTruckHe needs to call Sheldon at T&D and get some spare rockers. And so do I lol
Regan Wilson Super Street 469C
July 17, 2020, 05:34 PM
Matrixquote:
Originally posted by Mike Rietow:
quote:
Originally posted by Matrix:
He may not have checked them hot. Not sure. All he said was he checked them cold. We will see this coming weekend.
Look on the bright side.
If it ever doesn't make the shift again, on time. Ya'll will now know the maintenance needed to make it up for the following round.
You got that right lol