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Author
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Topic: Rocker arm question????
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91 5.0
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Member # 1527
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I have stock heads and 1.72 Ford motorsport roller rockers. I recently got my heads decked and put them back on a different short block that im putting in my car. When I torqued the rockers, I noticed that the plungers on the lifters depresseed, even when the cam lobes are at zero lift. The valves are closing all the way, but once I turn the car on and the oil pressure builds up, am I going to have a problem with the valves not closing???
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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91 5.0
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Member # 1527
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no one????????????
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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Stimson
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Member # 51
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How long was the motor not running/apart? (Did your lifters bleed out?)
Posts: 2373 | Registered: Jun 2000
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mustanggt5091
All I need is.....
Member # 444
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posted
![[Confused]](confused.gif) How long was it apart! Are you using the same heads?
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88 GT 357w (SOLD):(
06 Limited Edition R6 !!!!!
Posts: 2353 | From: Fairfield / Santa Rosa , Ca | Registered: Sep 2001
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Quick 88LX
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Member # 1950
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quote:
Originally posted by 91 5.0:
I have stock heads and 1.72 Ford motorsport roller rockers. I recently got my heads decked and put them back on a different short block that im putting in my car.
Looks to me like he is. Where is 93PONY??
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"Men are Made, Not Born"
Car Picture : http://www.angelfire.com/theforce/quick88lx/
Original Member #495. Can I get my number back?
Posts: 1785 | From: Fairfield, CA/Okinawa, Japan | Registered: Oct 2002
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rokcrln
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Member # 2536
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Well by decking the heads you kind of made your pushrods longer. I know fords are pre set for valve lash to push rod length but I don't know what room you have to play with.
[ June 02, 2003, 05:33 PM: Message edited by: rokcrln ]
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71 Bronco stock (for now) w/59k miles.
73 Bronco EFI 351W
71 Chevy PU w/Vett LT1
Posts: 448 | From: Winters Ca. | Registered: Mar 2003
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JoeT
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Member # 298
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the spec for a hydraulic roller lifter is about 0.03" of pre-load.
How did you torque the rockers? What sequence did you follow?
Set them to the proper pre-load, and no further. Also use a torque wrench since they are pedestal rockers and ensure that the torque value is in range simultaneously with the pre-load. (i.e. wiggle the pushrod till it 'drags', and then go 1/2 a turn further).
If not you fuck the whole thing up. Trust me on that one :/
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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rokcrln
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Member # 2536
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[QUOTE]Originally posted by shade-tree:
[ (i.e. wiggle the pushrod till it 'drags', and then go 1/2 a turn further).
Sounds like the old chevy's I have done in the past. My 302 was like 35ibl or some shit
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71 Bronco stock (for now) w/59k miles.
73 Bronco EFI 351W
71 Chevy PU w/Vett LT1
Posts: 448 | From: Winters Ca. | Registered: Mar 2003
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91 5.0
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Member # 1527
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posted
im using the same stock heads. They were machined though.
SHADE TREE--I turned the motor until cylinder #1 was on its compression stroke, then torqued to 22 ft/lbs. Then proceeded to cylinder #2 on its compression stroke, and so on. Now you said .03 of preload? Is it .03, or .003? And if my pre-load is too much, how do I change that? Is using shims under the rocker the only way?
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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91 5.0
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Member # 1527
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Yeah, thats what I figured. Ive got a pack of shims, im not sure if ive got enough though.
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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91 5.0
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Member # 1527
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Does anyone know where I can pick up some shims locally? The rockers are FMS if that matters.
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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