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Bogus Valve Adjuster - WTH ? #3225699 04/07/24 10:29 PM 04/07/24 10:29 PM
Joined: Jan 2003 Posts: 20,764 A collage of whims topside OP Too Many Posts
topside OP Too Many Posts Joined: Jan 2003 Posts: 20,764 A collage of whims	Something I've never seen before... This is a 340 with 273 rockers & hydraulic FT cam. Seems to run OK, no noises, etc, but pulled the left valve cover to fix a gasket leak, and found this. It's the only one, but needs replacement, if I can find one that'll match the others. Seems like a lot of thread on the others, though...

Re: Bogus Valve Adjuster - WTH ? [Re: topside] #3225702 04/07/24 10:47 PM 04/07/24 10:47 PM
Joined: May 2004 Posts: 854 Brisbane Australia 5 572B1 super stock
572B1 super stock 5 Joined: May 2004 Posts: 854 Brisbane Australia	Smith bros or manton and replace all of them in the correct length.

Re: Bogus Valve Adjuster - WTH ? [Re: 572B1] #3225714 04/08/24 05:22 AM 04/08/24 05:22 AM
Joined: Jul 2003 Posts: 4,769 Holland MI Ottawa 2 2boltmain master
2boltmain master 2 Joined: Jul 2003 Posts: 4,769 Holland MI Ottawa	I believe the adjuster WITHOUT the locking nut is the OEM adjuster. They are an interference fit designed to not use a locking nut. The others are an aftermarket replacement with the familiar adjusting screw with locking/lockdown nut. As mentioned, replace them all with Smith Bros components. Maybe ensure the surface the locking nut will seat down onto is filed down flat so the nut is not forced to seat against an irregular surface. Last edited by 2boltmain; 04/08/24 05:25 AM. Keep old mopars alive.

Re: Bogus Valve Adjuster - WTH ? [Re: 572B1] #3225749 04/08/24 10:15 AM 04/08/24 10:15 AM
Joined: Jan 2012 Posts: 2,645 Stuttgart, Arkansas rickseeman master
rickseeman master Joined: Jan 2012 Posts: 2,645 Stuttgart, Arkansas	Originally Posted by 572B1 Smith bros or manton and replace all of them in the correct length. That's what I think. Those look like 1-1/2" and that's too long. Get a set of 1-1/4". And these new ones will have a larger hex in the end. Mo better. 2011 Drag Pak Challenger

Re: Bogus Valve Adjuster - WTH ? [Re: rickseeman] #3225754 04/08/24 10:44 AM 04/08/24 10:44 AM
Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><]	Originally Posted by rickseeman Originally Posted by 572B1 Smith bros or manton and replace all of them in the correct length. That's what I think. Those look like 1-1/2" and that's too long. Get a set of 1-1/4". And these new ones will have a larger hex in the end. Mo better. The one oddball adjuster there is the factory original adjuster for those rockers. CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: Bogus Valve Adjuster - WTH ? [Re: an8sec70cuda] #3225760 04/08/24 11:12 AM 04/08/24 11:12 AM
Joined: Jan 2003 Posts: 20,764 A collage of whims topside OP Too Many Posts
topside OP Too Many Posts Joined: Jan 2003 Posts: 20,764 A collage of whims	Thanks, guys - guess I've never paid attention to stock 273 adjusters. Looks rather comical...as does the height of the other adjusters, for that matter. Sometimes, one just wonders...what were they thinking ?

Re: Bogus Valve Adjuster - WTH ? [Re: 2boltmain] #3225778 04/08/24 12:25 PM 04/08/24 12:25 PM
Joined: Jan 2003 Posts: 25,786 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,786 Rio Linda, CA	Originally Posted by 2boltmain I believe the adjuster WITHOUT the locking nut is the OEM adjuster. They are an interference fit designed to not use a locking nut. And when the interference fit becomes loose, only way to save the rocker is to run a tap through the threads and use an adjuster that needs a locknut. Last edited by John_Kunkel; 04/09/24 01:28 PM. The INTERNET, the MISinformation superhighway

Re: Bogus Valve Adjuster - WTH ? [Re: John_Kunkel] #3225806 04/08/24 01:35 PM 04/08/24 01:35 PM
Joined: Jul 2003 Posts: 150 Indianapolis, In. area B BTBelvedere member
BTBelvedere member B Joined: Jul 2003 Posts: 150 Indianapolis, In. area	I've had to do that before.Setting valves late at night before a race and broke the adjusting screw while tightening the nut.Put the screw in, but didn't like how it felt. I changed that rocker out for an old one I had on the bench. Worked just fine in a pinch.

Re: Bogus Valve Adjuster - WTH ? [Re: John_Kunkel] #3225817 04/08/24 02:01 PM 04/08/24 02:01 PM
Joined: Jan 2003 Posts: 20,764 A collage of whims topside OP Too Many Posts
topside OP Too Many Posts Joined: Jan 2003 Posts: 20,764 A collage of whims	Thankfully, the mini-me screw came out smoothly. No other sign of buggery, hope they didn't drop the proper hardware into the machinery I'll make that adjuster available as a genuine original MoPar part for that last correct-numbers-and-codes detail Smith Bros to the rescue...

Re: Bogus Valve Adjuster - WTH ? [Re: topside] #3225906 04/08/24 08:44 PM 04/08/24 08:44 PM
Joined: Dec 2005 Posts: 11,552 Fulton County, PA C CMcAllister Mr. Helpful
CMcAllister Mr. Helpful C Joined: Dec 2005 Posts: 11,552 Fulton County, PA	It's the amount of adjuster sticking out the bottom that really matters. If the results don't match the theory, change the theory.

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