roller rockers |
Post Reply |
Author | |
go351
New Member Joined: 04-October-2011 Location: New Hampshire Status: Offline Points: 21 |
Post Options
Thanks(0)
Posted: 05-June-2018 at 3:13PM |
anyone else have trouble with crane roller rockers making a loud ticking noise above 2500 rpm on a cleveland? have adjusted too many times with no change.
|
|
Go 351
|
|
californiajohnny
Moderator Group Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14606 |
Post Options
Thanks(0)
|
assuming they are getting plenty of oil? hydraulic or solid lifter? are the roller tips centered with the end of the valve stem through it's lift cycle? any marks indicating some could be rubbing the valve cover or baffle???
|
|
JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
|
Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
Post Options
Thanks(0)
|
more info, what cam? solid / hydraulic, grind or lift / duration spring pressure? who installed the springs and set the heads up for the cam lift + safety clearance? what's your target lash (solid) or preload (hydraulic) ? are you sure you have the trunnion turned the right way so the poly lock sits onto a flat countersink, and is the countersink large enough diameter to fit the polylocks? just like everything else there's more to it than you probably realize or want to know what's your adjusting procedure, are you familiar with the term Zero Lash?
|
|
72 GT Ute
|
|
go351
New Member Joined: 04-October-2011 Location: New Hampshire Status: Offline Points: 21 |
Post Options
Thanks(0)
|
hydraulic cam heads bought off ebay rebuild looks good roller has nice contact with valve stem, instructions say to base circle tighten till you cant turn push rods with fingers.hard to tell when you get to zero lash.
|
|
Go 351
|
|
Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
Post Options
Thanks(0)
|
it's a VERY light touch when the rocker just barely comes to zero lash and there's a slight amount of drag on the pushrod. it'll probably still turn pretty easily first thing to check is if the poly locks fit into the fulcrum spot-faced flat and if you have them all the correct orientation with the spot-faced flat facing up are you using poly-locks?
|
|
72 GT Ute
|
|
go351
New Member Joined: 04-October-2011 Location: New Hampshire Status: Offline Points: 21 |
Post Options
Thanks(0)
|
yes they came with poly locks installed the orientated right out of the box never seperated them adjusted them again today think i got them too tight now start over again tommorow, thanks for the help.
|
|
Go 351
|
|
Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
Post Options
Thanks(0)
|
what part number is your rocker & locks kit? no guarantee they were oriented correctly in the package unless you checked during install spend a few minutes getting the Zero Lash feel how much preload are you intending to put in?
Edited by Rockatansky - 07-June-2018 at 2:47PM |
|
72 GT Ute
|
|
californiajohnny
Moderator Group Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14606 |
Post Options
Thanks(0)
|
what i do on any of my poly locks is... set the nut and rocker to zero lash, then turn the inner set screw tight, while keeping both of them in phase to each other turn both together a 1/4 turn tight to get my preload
|
|
JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
|
Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
Post Options
Thanks(0)
|
Yes unless you use the "turn both tools together & jam the threads" trick on the final tighten, they'll come loose have they been working themselves loose?
|
|
72 GT Ute
|
|
go351
New Member Joined: 04-October-2011 Location: New Hampshire Status: Offline Points: 21 |
Post Options
Thanks(0)
|
Had one loosen up initially but none since will check every thing soon.
|
|
Go 351
|
|
Post Reply | |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |