Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 Engine Rebuilding Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
Join Date: Jul 2009
Location: Eastern North Carolina
Posts: 827
Garage
Rocker adjuster screws seized

Progressing slowly on the rebuild of my 1986 930 engine. The previous owner over-torqued most of the adjuster screws on the rocker arms. They will screw in and out a bit but the deformed section of thread stops me from removing them. I tried holding them in the bench vise and using a screw driver bit on a 1/4 drive ratchet. Even with some moly on the threads it gets stuck. Should I just cut them off and remove? Should I try a thread repair die?
I am removing the adjuster screws in prep to send the rockers off for rebuild.
David
Performance EngiNerding

Old 06-21-2020, 01:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
iamchappy's Avatar
 
Join Date: Feb 2003
Location: Minnetonka, MN
Posts: 1,461
Garage
I sent my rocker arms off to rebuild and i had to cut mine off with a dremel tool, will have to replace 5 of them.
__________________

914 6 Turbo twinplug 3.12
87 924S
Lexus SC400
Lexus LS400
Old 06-21-2020, 02:47 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered
 
Join Date: Oct 2013
Location: Prescott, AZ
Posts: 1,053
Before I cut them, I would try using a die.
__________________
1990 964 Coupe
1986 Carrera 3.2 Targa
Old 06-21-2020, 03:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered
 
Join Date: Jul 2009
Location: Eastern North Carolina
Posts: 827
Garage
8mm x 1.0?
Old 06-21-2020, 04:52 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
It's a 914 ...
 
stownsen914's Avatar
 
Join Date: Jan 2008
Location: Ossining, NY
Posts: 2,268
Sometimes the split portion of the threads where the screwdriver slot can deform from over-tightening. A die, or cut and re-slot with a Dremel.
Old 06-21-2020, 05:07 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Puny Bird
 
Mark Henry's Avatar
 
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,282
Quote:
Originally Posted by reclino View Post
8mm x 1.0?
Correct, but I found that my rocker threads were damaged as well. The die only helped me barely get the screw out, I had to use a tap to chase the threads before it would accept a new adjuster and turn smoothly.
__________________
'74 Porsche 914, 3.0/6
'72 Porsche 914, 1.7, wife's summer DD
'67 Bug, 2600cc T4,'67 Bus, 2.0 T1
Not putting miles on your car is like not having sex with your girlfriend, so she'll be more desirable to her next boyfriend.

Last edited by Mark Henry; 06-22-2020 at 05:27 PM..
Old 06-22-2020, 10:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered
 
Join Date: Oct 2003
Location: Central Fla
Posts: 1,760
adjuster threads

Most of the time the threads are deformed from over tightening the jam nut, I secure the rocker and run the adjuster backward and pop the foot off, then chase the threads in the rocker replace the adjuster and good to go !
Mike Bruns
__________________
The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago.
Old 06-23-2020, 04:00 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered
 
Join Date: Jul 2009
Location: Eastern North Carolina
Posts: 827
Garage
Does the foot just.pop back on?
Old 06-23-2020, 10:03 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered
 
Join Date: Oct 2003
Location: Central Fla
Posts: 1,760
foot

I imagine it would, but if the threads are deformed enough where you do this to save the rocker it need a new adjuster
Mike Bruns

__________________
The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago.
Old 06-25-2020, 04:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 12:26 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.