Yella Terra Shims Thickness
Thread Starter
Joined: Mar 2003
Posts: 402
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From: Turkey Creek, LA
Yella Terra Shims Thickness Would anyone happen to know the thickness of the shims that come with the yella terra stock ratio rockers. I was just wondering if going with a half thickness washer would quiet down the valvetrain?
Thread Starter
Joined: Mar 2003
Posts: 402
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From: Turkey Creek, LA
After I installed the YT's, I noticed that they really "tick". I was thinking that maybe a shim somewhere in between no shim and the YT shim would quiet down things a little. Am I thinking in the right direction? By the way, does using shims take away a little lift away? I guess if I had not hocked all of my mic's when I quit work as a machinist I would not have to ask such questions. 
Launching!
Joined: Jun 2003
Posts: 233
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From: St. Louis, MO
YT shims are .050" thick and are plain ol' flat washers (.750" OD x .350" ID). Adding shims DOES NOT reduce lift, it only changes the preload on the lifters.
How many turns (from zero lash) until the rocker bolts were tight, before using shims? And after? You might not need shims at all.
How many turns (from zero lash) until the rocker bolts were tight, before using shims? And after? You might not need shims at all.
Thread Starter
Joined: Mar 2003
Posts: 402
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From: Turkey Creek, LA
I think I got like 1.5 turns on the rocker bolts before the shims and somewhere between 1 turn and 3/4 of a turn with the shims, if I remember correctly, I did the swap a few months ago when I changed heads.
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Originally Posted by M.Roberts
Very interesting. So your saying I might possibly be able put in a thicker shim and quiet things down. I might give that a shot. Thanks
Thread Starter
Joined: Mar 2003
Posts: 402
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From: Turkey Creek, LA
I was not real sure about what length pushrods to go with, did some research on here and came up with some saying 7.4, others saying 7.35, so I went back with stock, because it is my only means of transport, I could not afford the down time to check it after installing cam and heads and then order pushrods, but I can always change em If need be.
