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Author
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Topic: valve job and stock pedestal rockers, need shims??
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66 AC COBRA
Nitrous King
Member # 904
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posted
 
 
i just finished doing a valve job on my 95 gt, bone stock stock
stock valves cut just enough to get them to seal right, this is the first time they have been cut
i am wondering since cutting the valve and seat a little, it will make the valve a little taller
will it not let the valve close all the way since the pedastall rockers arent adjustable unless you shim them
so am i going to need shims to set up the valve train properly
and if so, anyone know where i can get some shims today, short of making them my self by disecting a few feeler gauges i have around my house
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FFR AC Cobra
72 Vega - WCHRA Extreme 10.5
Posts: 6280 | From: Winters | Registered: Feb 2002
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FasterDamnit
Bad Attitude
Member # 442
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posted
Ped. mount adjustment procedure-
Working on the #1 piston, slowly spin the pushrod, of the intake rocker, between two fingers while you tighten the 5/16" bolt with your other hand. When it becomes difficult to spin the pushrod, indicating that all clearances have been taken up, torque the 5/16" bolt to 20 ft-lb. If more than one full turn of the bolt is required to achieve the torque setting, you will need to shim the pedestals. Unlike a stud-mount rocker, the only adjustment possible is adding or subtracting shims under the pedestal.
Shimming: Back off the bolt, add a .015” - .020” inch shim under the pedestal, and try it again. Keep adding shims until the torque applied to the bolt reaches 20 ft-lb with between one-half and one full turn of the bolt after the pushrod stops turning. If however the pedestal bolt reaches 20 ft-lb and the pushrod can still be easily rotated, the pushrod is too short and must be replaced with a longer one.
http://www.fordmuscle.com/archives/2001/10/rockerarms/
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'92 LX T5
Looked stock, went 11's 11.90 at 115mph.
'65 Mustang 347
www.fordmuscle.com
Livin' in the Carolina Pines
Posts: 2971 | From: NorCal | Registered: Sep 2001
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66 AC COBRA
Nitrous King
Member # 904
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posted
each bolt took between 1/2 to 3/4's of a turn until torqued
i did this before posting the question, but wanted to make sure before i assembled the entire motor and fired it up and it ran like ass, like before ![[Razz]](tongue.gif)
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FFR AC Cobra
72 Vega - WCHRA Extreme 10.5
Posts: 6280 | From: Winters | Registered: Feb 2002
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