Author Topic: Rocker Shaft oil restrictors  (Read 2886 times)

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bkdunha

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Rocker Shaft oil restrictors
« on: September 03, 2014, 11:28:20 AM »
I am doing a minor refresh of my stock 67 GT motor.  Back in the 80's with the rebuild I had a machinist make some restrictors to slide in the oil galley just below the oil passage for the pedastal that oils the rocker shaft.  When I dissasembled the head to get the guides redone this past week one of the restrictors was present and the other was not.  I personally did not do the rebuild back in the 80's so I am assuming my assembler did not include one of the restrictors.  The restricted shaft seems to be fine.  My question is:

Should I have another restrictor made to match the existing one and place it in the head or should I just leave them out?

In general this is a fairly stock motor with a very mild cam increase and headers.  Feedback would be appreciated.
67 GT - 390 4 spd (mostly stock)
72 Mach 1 - 351c Concourse Restored

KMcCullah

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Re: Rocker Shaft oil restrictors
« Reply #1 on: September 03, 2014, 11:41:15 AM »
A #70 Holley carb jet works good in cast iron heads for a restrictor. I wouldn't go without some kind of restriction personally.
Kevin McCullah


jayb

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Re: Rocker Shaft oil restrictors
« Reply #2 on: September 03, 2014, 12:31:01 PM »
+1 on what Kevin said.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC