My problem is with the #3 cylinder intake
valve rocker arm, It started tapping
about 3 months ago so I tighten it and it
was ok untill a couple weeks ago now I have to tighten it every week. Could it be the
stud going loose, or the roller lifter going
bad I need to fix it. Thanks for any help.


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86 T/A L98 with T-5(orig an LG4)
Hooker headers
Performer RPM intake
holley 750cfm carb
cast iron 76cc heads with
2.02-1.60 valves
B&M ripper
Richmond 4.10's
Flowmaster
9.43@74mph 1/8 mile.

 

sounds like the locknut is bad. replace the nut and the stud if possible (if they're screw-in studs).

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Kyle Osterholt
Okarche, Oklahoma
ASE Master Certified
86 T/A 383 TPI
89 TTA #1002 T-top/Leather
89 TTA #1358 Hardtop/Leather
80 T/A Pace Car
73 Opel GT
73 bronco
2000 Ducati 996 Monoposto
83 MSE #52

 

They are push in stud's, could the stud be
coming loose?

 

take a compression test on that cylinder if you find out it is not a stud backing out. if the compression is low then you lifter has not been rotating on the cam lobe causing the lifter to be wedged shaped and wearing out. you then have to reset the lifter, which is just masking a greater problem with the cam and lifter. been there done this! 454 bbc.

 

Check the overall hieght of the stud if they are stock press in studs, compare it to others..I would bet its coming out of the head.

------------------
ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...

R.I.P. #3
"He can see air"

[This message has been edited by Engineboy (edited November 20, 2001).]

 

I would also bet it is coming out of the head. When you add up the most likely posabilitys this one is definately on the top of thelist if it is not the nut.