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rocker arms

Started by roadkingdresser, September 10, 2022, 12:35:03 PM

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roadkingdresser

Just bought a new rocker arm assembly for the front cylinder(still dealing with the ticking) put the shafts thru the base and rockers.Both have .014 side play should I shim them or no? This is just sitting on the bench. If so what should be a good tolerance and where do I get the shims?
roadkingdresser

SP33DY

September 10, 2022, 01:28:51 PM #1 Last Edit: September 10, 2022, 01:33:53 PM by SP33DY
Bolt the assembly to a cylinder head and see what happens. I have seen the clearance you see on the bench disappear or even go tight when the assembly is torqued down on a head. (Particularly on Evos).
At 0.014" you are in the ballpark if this is a TC. The FSM shows clearance spec. 0.003" to 0.0013" and wear limit of 0.025".
Drag specialties has the following shims:
0927-0007,  0.005"
0927-0006,  0.007"
0927-0008,  0.015"

roadkingdresser

roadkingdresser

JSD

.0013" sounds tight. I guess the Alloy grows with heat. 

Ohio HD

September 13, 2022, 06:27:35 PM #4 Last Edit: September 13, 2022, 07:21:59 PM by Ohio HD
It's just a typo. SP33DY meant to type 0.0013" 0.013".

JW113

Ohio meant to type 0.013.

 :SM:

-JW
2004 FLHRS   1977 FLH Shovelhead  1992 FLSTC
1945 Indian Chief   1978 XL Bobber

Ohio HD

:hyst:      I'm glad your here to help me JW, I sure need it some days.    :doh:

SP33DY

Quote from: Ohio HD on September 13, 2022, 06:27:35 PMIt's just a typo. SP33DY meant to type 0.0013" 0.013".

Correct! I accidentally added a zero!

flht1550

Many years ago when I was chasing ticks and rattles I bolted mine on a extra head I had and checked that way to get a true reading. Then bolted the head in the bridgeport. I can't remember what it measured but I machined it bigger so I could use a thicker shim so not to worry about a thin shim breaking like the old wave shims from the shovelhead days.