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273 rockers #2449139
02/09/18 04:25 PM
02/09/18 04:25 PM
Joined: Jan 2005
Posts: 1,768
Keymar, MD
DusterKid Offline OP
top fuel
DusterKid  Offline OP
top fuel

Joined: Jan 2005
Posts: 1,768
Keymar, MD
To change the factory style 273 rocker arms to a adjusting screw and lock nut, what if anything needs to be done to the rocker arm?

Re: 273 rockers [Re: DusterKid] #2449148
02/09/18 04:41 PM
02/09/18 04:41 PM
Joined: Jan 2007
Posts: 685
pennsylvania
poboyengineering Offline
mopar
poboyengineering  Offline
mopar

Joined: Jan 2007
Posts: 685
pennsylvania
Just spot face the area where the nut will rest.


It may be ugly, but it sure is slow.

Girls comb their hair in rear view mirrors and the boys try to look so hard....
Re: 273 rockers [Re: DusterKid] #2449704
02/10/18 07:36 PM
02/10/18 07:36 PM
Joined: Jan 2005
Posts: 1,768
Keymar, MD
DusterKid Offline OP
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DusterKid  Offline OP
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Joined: Jan 2005
Posts: 1,768
Keymar, MD
I'm assuming the spot face is to help the nut sit flush? Does it have to be done on a lathe or could a sanding belt be good enough?

Re: 273 rockers [Re: DusterKid] #2449727
02/10/18 08:15 PM
02/10/18 08:15 PM
Joined: Jan 2007
Posts: 685
pennsylvania
poboyengineering Offline
mopar
poboyengineering  Offline
mopar

Joined: Jan 2007
Posts: 685
pennsylvania
I did mine on a mill. I suppose you could do it on a drill press with a center cutting end mill. And yes, it's to give the nut a flat to tighten against.


It may be ugly, but it sure is slow.

Girls comb their hair in rear view mirrors and the boys try to look so hard....
Re: 273 rockers [Re: DusterKid] #2449731
02/10/18 08:17 PM
02/10/18 08:17 PM
Joined: Nov 2015
Posts: 870
Missouri
J
jwb123 Offline
super stock
jwb123  Offline
super stock
J

Joined: Nov 2015
Posts: 870
Missouri
Where do you buy the replacement adjusters? I got a set of those rockers in my junk.

Re: 273 rockers [Re: DusterKid] #2449739
02/10/18 08:37 PM
02/10/18 08:37 PM
Joined: Jan 2007
Posts: 685
pennsylvania
poboyengineering Offline
mopar
poboyengineering  Offline
mopar

Joined: Jan 2007
Posts: 685
pennsylvania
Isky sells them, among others.


It may be ugly, but it sure is slow.

Girls comb their hair in rear view mirrors and the boys try to look so hard....
Re: 273 rockers [Re: DusterKid] #2450498
02/12/18 02:40 AM
02/12/18 02:40 AM
Joined: Feb 2003
Posts: 3,691
MO
C
cdp Offline
master
cdp  Offline
master
C

Joined: Feb 2003
Posts: 3,691
MO
https://www.pushrods.net

The factory adjusters are a tapered thread. All you have to do is chase them with a good 5/16-18 or 3/8-24 tap (can't remember which) to finish them out.

I've done 1 set already, but haven't spot faced them yet.

Re: 273 rockers [Re: DusterKid] #2451733
02/14/18 05:37 PM
02/14/18 05:37 PM
Joined: Jan 2003
Posts: 21,050
Niles , Ohio
T
therocks Offline
oh wait.but hey.lets see.oh yeah.
therocks  Offline
oh wait.but hey.lets see.oh yeah.
T

Joined: Jan 2003
Posts: 21,050
Niles , Ohio
My old Sig Ersons were interference fit.They finally started backing off after 30 plus years.Bought MP adjusters and they fit perfect.Still running them and adjust maybe once every 2 years.Rocky


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