Author Topic: Crank position for rocker install  (Read 815 times)

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Cyclone03

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Crank position for rocker install
« on: October 30, 2021, 09:09:54 PM »
Odd title I know. Back on the old forum it was mentioned to position the crank in a way that the valves ended up more or less neutral while tightening the rocker shafts.
One position for 1-4 bank another for 5-8.
Stock dampers had marks or notches.
Does anybody know the positions starting from TDC?
Thank you in advance.
Lance H

frnkeore

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Re: Crank position for rocker install
« Reply #1 on: October 31, 2021, 02:12:56 AM »
Ford's factory procedure is:

TDC compression stroke + 45° or to the XX on the dampener. The crank stays in place, at that point, for both sides.

1 - 4 bank, starting with 4, loosen 2 turns, per bolt, going in order.

5 - 8 bank, same thing but, start at 5.

Install in reverse order, after bolts are finger tight. Tighten 4 through 1 then 5 through 8.

 
Frank

blykins

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Re: Crank position for rocker install
« Reply #2 on: October 31, 2021, 05:49:40 AM »
Odd title I know. Back on the old forum it was mentioned to position the crank in a way that the valves ended up more or less neutral while tightening the rocker shafts.
One position for 1-4 bank another for 5-8.
Stock dampers had marks or notches.
Does anybody know the positions starting from TDC?
Thank you in advance.

Lance, you can just bump the engine over and watch the pushrods.   When all of the pushrods on one bank are down/near down, slap the rockers on.  I go through and tighten each bolt/nut a 1/4 turn at a time until all the stands are down, then I torque them.
Brent Lykins
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Cyclone03

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Re: Crank position for rocker install
« Reply #3 on: October 31, 2021, 12:56:39 PM »
Thanks frnkeore I knew there was a procedure.

Brent that’s the way I’ve been doing it just thought maybe there was a quick setting.
BTW I got the pushrods ordered through Trend no problem. Thanks again.
Lance H