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roller rockers

Printed From: The Ford Torino Page
Category: Engine Specific Forum
Forum Name: 335 Series Engine Forum
Forum Description: 351C, 351M and 400 engines
URL: http://forum.grantorinosport.org/forum_posts.asp?TID=17156
Printed Date: 22-June-2018 at 3:22PM
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: roller rockers
Posted By: go351
Subject: roller rockers
Date 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.

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Go 351



Replies:
Posted By: californiajohnny
Date Posted: 05-June-2018 at 3:40PM
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???


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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


Posted By: Rockatansky
Date Posted: 05-June-2018 at 4:02PM
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?


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72 GT Ute
   


Posted By: go351
Date Posted: 06-June-2018 at 2:50PM
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.

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Go 351


Posted By: Rockatansky
Date Posted: 06-June-2018 at 3:51PM
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?


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72 GT Ute
   


Posted By: go351
Date Posted: 07-June-2018 at 2:34PM
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.

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Go 351


Posted By: Rockatansky
Date Posted: 07-June-2018 at 2:42PM
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 Wink

how much preload are you intending to put in?


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72 GT Ute
   


Posted By: californiajohnny
Date Posted: 07-June-2018 at 4:45PM
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 Wink


-------------
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


Posted By: Rockatansky
Date Posted: 07-June-2018 at 6:24PM
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?


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72 GT Ute
   


Posted By: go351
Date Posted: 08-June-2018 at 3:45PM
Had one loosen up initially but none since will check every thing soon.

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Go 351



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