FE Rocker assembly oiling, poor Tux is possibly starving?

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  #16  
Old 11-27-2005 | 01:23 PM
"Beemer Nut"'s Avatar
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From: "Islander"
With what you said about new lifters times two in 10k miles it's not lifters. I would locate the offending lifter and replace the pushrod with a longer one if the feeler gauge check makes a difference. Are all the valve stem tips in line with a straight edge across them? I paid around $160 for aluminum adjustable roller tip rockers but that was 19 years ago and they are still running great. They look like Dove's but have brass bushings that can be replaced, FPP I think. I installed oillite bushings as they had over 400K miles on them. Loose or worn rocker bores and shafts will lower your oil pressure at idle real fast as you'll have 16 leaks.
......=o&o>.....
 
  #17  
Old 11-27-2005 | 02:00 PM
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somebody correct me if I am wrong, but what if a rod is slightly to long and not allowing the lifter to pump up?

Robert P.
 
  #18  
Old 11-27-2005 | 11:56 PM
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If the pushrod is too long, the lifter will not need to pump up to remove slack in the rocker assy since there would be no slack. At worst it would hold a valve open possibly causing a bent pushrod.
 
  #19  
Old 11-28-2005 | 10:52 AM
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I put the DSC adjustable rockers with solid spacers in my engine. There's just no replacement for having the ability to adjust. The solid spacers keep the rocker from side slipping. I think this is more of an issue with higher lift and higher rpm's. Honestly I'd probably never know the difference on my engine but the spacer cost is not much so I put them in.

Tracy
 
  #20  
Old 11-28-2005 | 11:13 AM
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Originally Posted by ceetwarrior
EDIT: Well I see that DSC is tempting me with a nice sweet deal..... Adjustable rocker assemblies w/ cupped pushrods, solid spacers. ready to go $320..... I think I might just have to save up for that. I think that'd make this whole deal a whole lot easier, don't ya think?

Why do I want solid spacers vs. springs?
$320??? That's way too much to convert to adjustable. Unless you're running a giant cam, I see no need for the solid spacers. The springs have worked fine for me with my 941 cam.

What I'd do to convert to adjustables, is go to Napa or another reputable parts store (ha!) and get replacement adjustable lifters for an early FE that had solid lifters. Adjustable and effective. Then go to the hardware store and get a couple new cotter pins for the ends. Take apart your setup, stick the new rockers on. Order a set of DSC's "427 Ford Adjustable Pushrods" for $45. You might have $200 in it by the time you're done.
 
  #21  
Old 11-28-2005 | 06:58 PM
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Rusty, how cheap to you think those new rockers are? I'll call Napa, but i doubt they are any cheaper than anyone else. DSC wants $23 a piece for new ones $23x16=$368.

Their used price is $12x16=$192

Although, I do have almost new shafts. Then use my old stands, springs, washers, and I have new cotter pins. Then all I'd need is adjustable rockers, then the pushrods.

EDIT: Stinkin' Napa is closed now. That's one thing I hate about Napa, is their hours. Freakin' bankers hours. Sleep in late get off early. I don't even want to bother any other parts stores where they'd have to actually look up the parts in a big paper book that the prices are 4 years old.
 

Last edited by ceetwarrior; 11-28-2005 at 07:19 PM.
  #22  
Old 11-28-2005 | 07:17 PM
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From: "Islander"
Hell I paid $6.83 each for adjustable rockers back in 85. I believe they are TRW's as they're still NIB in the garage. For what they want for adjustables you might as well have aluminum roller tips. Throw away those aluminum stands and use iron 427 clincher style, also run long finger oil deflectors.
.....=o&o>.....
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  #23  
Old 11-28-2005 | 07:20 PM
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Beemer my cam isn't that big, is it nessessary to run cast iron stands vs. my aluminum ones?
 
  #24  
Old 11-28-2005 | 10:49 PM
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From: "Islander"
Iron stands are not neccessary but knowing the shaft has more support on the ends vs a egg shape alumunim stand bore makes me feel better even with just a mild cam. The same goes with spring spacers vs solid aluminum, on that note I had a rocker walk over and pound the side of the retainer which made a keeper come out and bend a valve. This happened under 5,000 rpm's with a CJ cam and roller rockers on C4G heads.The extra effort to leave nothing to chance is a sold built motor, why risk a $5,000 motor because you saved $150
cutting costs? JMO.
.....=o&o>.....
 
  #25  
Old 11-28-2005 | 11:06 PM
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From: Colorado
Very good point Beemer.

Well, I'm still on the search for some rockers! And now possibly some cast stands. If Beemer would sell me that NIB set he's got I'd be in business along with some pushrods.
 
  #26  
Old 11-29-2005 | 12:05 PM
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Huh. Well, my 941 cam seems to be getting along just fine with the aluminum stands. Time will tell though.
 
  #27  
Old 11-29-2005 | 12:45 PM
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From: "Islander"
Sorry to be a tease Ceetwarrior but those rockers and shafts (TRW's also) are going into a buds 428 CJ build this spring as he purchased a cherry CJ Mustang less motor and trans. Tell everyone all you want for X-mas is roller rockers and maybe they'll pool their money for ya.
.....=o&o>.....
 
  #28  
Old 11-29-2005 | 03:45 PM
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From: "Islander"
rusty70f100, not to pee in your beer or being a wise a$$ but the design of the rocker assembly back in the 50's was plenty strong for the low lift, slow acceleration rate cams with lighter seat and full lift pressures. With standard 390 (not High performance 427's) the seat pressures were 80-90 psi, open 200-220 psi. The 343941 cam seat pressure is 114 psi, open 283 psi.

----closed or seat psi----

114/80 = 1.425 times higher psi pressure

114/90 = 1.266 times higher

----open psi----

283/200 = 1.415 times higher psi pressure

283/220 = 1.286 times higher

Ford must of had a reason to install split iron stands on their performance motors, years later we add cams with a higher lift, pressure and acceleration
rate to aluminum stands. Cutting corners sometimes can cost you, better safe than sorry. JMO.
.....=o&o>.....
 
  #29  
Old 11-29-2005 | 05:11 PM
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PSI = Pounds per Square Inch. Usually used to measure pressure of a liquid or a gas. It would be more correct to just use lbs.

I'm sure they had a reason to install the cast iron stands. Like I said though, I have yet to have a problem. Time will tell.

IIRC, Ratsmoker broke a rocker shaft with his 343801 cam. I think it's more lift related, and the rocker shaft will go before the stands. Or maybe it's the stands that let the shafts go? In any case, I'd upgrade to higher strength shafts and the iron stands if I had it apart.

I've yet to hear of a 343941 cam breaking a rocker shaft.
 
  #30  
Old 11-29-2005 | 05:48 PM
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From: "Islander"
Yes a correction is needed (sorry brain fart) to pounds pressure not psi. My way of thinking the aluminum stand provides less support vs iron which grips the shaft all around less the cut slot area and the unsupported shaft ends are weaker with that overhang design.
.....=o&o>.....
 




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