Re: Rocker Shaft Oiling on a Big Block
[Re: ChrisDavis]
#673545
04/18/10 10:33 AM
04/18/10 10:33 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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The rocker holdown bolt holes in the shaft are the same on both sides so they could be installed upside down and the shaft itself will still recieve oil but you want the small oiling holes where the oil comes out at each rocker on the bottom side of the shaft to be slightly offset toward the valve side. If the notch on the front of the drivers side shaft is down and the notch on the rear of the passenger side shaft is down you are good
live every 24 hour block of time like it's your last day on earth
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Re: Rocker Shaft Oiling on a Big Block
[Re: Dodgem]
#673554
04/18/10 12:40 PM
04/18/10 12:40 PM
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Joined: Sep 2004
Posts: 1,226 Cookeville
Chilort
Will Work For Mopars
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Will Work For Mopars
Joined: Sep 2004
Posts: 1,226
Cookeville
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Quote:
roller rockers are sealed all the way around the shaft unlike stamped so it really matters not which way the holes are.
That's kind of what I was thinking.
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Re: Rocker Shaft Oiling on a Big Block
[Re: ChrisDavis]
#673556
04/18/10 12:56 PM
04/18/10 12:56 PM
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Joined: Jan 2003
Posts: 25,200 Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
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Posts: 25,200
Upper Midwest
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Quote:
OK, I have one valve cover off. There are no notches or markings on the ends of the shaft at all. I believe Buildanother said that only applied to small blocks. I guess I will pull the shaft next. Besides the oil hole facing down what else should I look for to verify the correct orientation of the shaft? I had it running for a while at an idle. There is plenty of oil puddled in the head so it must be oiling somewhat.
Small block is where there are notches on the shafts that are used as indicators - not on BB's. As stated above. Hey Prime the engine and if you have oil a good supply you have no problem. Remember that only one side feeds oil at a time depending on camshaft position to the oil gallary.
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Re: Rocker Shaft Oiling on a Big Block
[Re: BSB67]
#673559
04/18/10 01:21 PM
04/18/10 01:21 PM
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Joined: Sep 2004
Posts: 1,226 Cookeville
Chilort
Will Work For Mopars
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Will Work For Mopars
Joined: Sep 2004
Posts: 1,226
Cookeville
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Quote:
Dodgem - I'm not sure what you mean by "sealed" but you can probably get away with it ...
If it is just roller tipped and not full roller (i.e. bushed) then the orientation matters. If it is a full roller rocker (i.e. Harland Sharp) then there is a roller bearing all the way around. Where the hole is in the shaft shouldn't matter with a full roller rocker.
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Re: Rocker Shaft Oiling on a Big Block
[Re: dirtybee]
#673562
04/18/10 04:41 PM
04/18/10 04:41 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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I had no idea BB's didn't have the notches also. I'd as he said pull each shaft/rocker assy, take off 1 rocker and if the holes are not on the bottom/15 deg toward the valve side I'd slide the shaft out and put it back in the other way/reassemble
live every 24 hour block of time like it's your last day on earth
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Re: Rocker Shaft Oiling on a Big Block
[Re: AndyF]
#673565
04/22/10 05:39 PM
04/22/10 05:39 PM
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Joined: Nov 2006
Posts: 75 Illinois
ChrisDavis
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Illinois
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I know adhesive is not the proper way to fix the stripped rocker shaft bolt. But what do I have to loose!
I have at least 4 good unused threads at the bottom of the hole. I am going to clean the hole very well with brake cleaner, allowing sufficient dry time, and then I am going to fill the bottom of the hole with JB Weld. I will strip the black anodizing off the stud’s threads and thread it all the way to the bottom into wet adhesive. I anticipate gluing the bottom one inch of the stud in. With the good threads I have I shouldn’t have to count on the adhesive for too much holding strength since all I really need is to keep from pulling out the remaining threads.
Has anyone ever tried something like this? If you have, what adhesive did you use? I see three main choices. First is JB Weld. Another possibility is Permatex’s Stripped Thread Repair Kit. The only other one I could find was Loctite’s Form-A-Thread. I am leaning toward the JB Weld since it is good to 600* and the others are only good to 300*. Besides that I have no experience with the other products but I have used JB Weld.
Does anyone else have an opinion on adhesives? Has anyone tried any of the products I mentioned above? Is there another product I haven’t considered?
NOTE: Edelbrock now ships their BB Mopar heads with studs included for the four oiling holes. They didn’t used to do this. In fact this appears to be so new that they don’t have the stud part numbers set up for ordering in their systems yet. For reference the Edelbrock part numbers for the stud, nut and washer are 36-6091, 36-6092 and 36-6093.
Last edited by ChrisDavis; 04/22/10 08:27 PM.
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Re: Rocker Shaft Oiling on a Big Block
[Re: Stanton]
#673567
05/06/10 03:48 PM
05/06/10 03:48 PM
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Joined: Nov 2006
Posts: 75 Illinois
ChrisDavis
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Well… I am going to find out this weekend. I will be reassembling everything Saturday and will see if this worked. I had trouble locating correct studs. ARP’s regular stud line is only threaded for ¾”. The hole in the head is 1” deep. I ended up using Edelbrock (ARP) 6009 Ford FE studs. They are threaded for 1” on both ends. They are about 3.6” long, which is about 1/3” longer than what Edelbrock recommends for their Mopar heads. They fit perfectly, with 3 or 4 exposed threads above the nut and have tons of valve cover clearance. I JB Welded the stud in Monday. One mistake I made was putting adhesive in the hole first. It caused a hydro lock situation that prevented me from tightening the stud down all the way to the bottom of the hole. That means I might have caught 2 or 3 of the good remaining threads rather than all 4 or 5 of them. I didn’t discover I wasn’t at the bottom of the hole until I set the shaft in place and noticed the stud was higher than the other side. To get the JB Weld thinned enough to be workable I had to mix a few drops of acetone with it. That extended the curing time by at least a couple of days. I have samples drying on a cardboard to verify it’s cure. Good thing I called JB Weld first. They informed me that brake cleaner leaves a residue behind that prevents JB Weld from bonding. I cleaned the holes again with acetone. Thanks to Stanton for the idea to plug the oiling hole. The O-ring didn’t work because I wanted to leave a tail hanging out for removal and couldn’t get the stud past it. However an equivalent sized piece of wire insulation did work. It plugged the oil hole and then flattened out so I could get the stud by it. As soon as the adhesive dried enough to not run I pulled the wire insulation out flattening it between the head and the stud as it came. No adhesive got anywhere near the oil hole. I also masked the shaft journal to keep it clean. Last, just to add insult to injury, I put new double valve springs on. They are 160 on seat and 360 at my cam’s .550 lift. This thing is either going to go or blow.
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Re: Rocker Shaft Oiling on a Big Block
[Re: AndyF]
#673568
05/06/10 06:20 PM
05/06/10 06:20 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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You always have the option of drilling horizontally in the rear of the head then angle down from the rear pedestal to meet this passage. I've done it on a SB and have not yet but will be doing it on a BB and it has the benefit of allowing you to restrict the 5 crank to cam passages to 1/16" which is plenty of oil for the cam bearings/journals.
live every 24 hour block of time like it's your last day on earth
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Re: Rocker Shaft Oiling on a Big Block
[Re: ChrisDavis]
#673570
05/13/10 02:48 PM
05/13/10 02:48 PM
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Joined: Jan 2003
Posts: 5,903 Athens, Greece
Pyper70
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Athens, Greece
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Does Banana grooving the holes help any with the oiling on roller rockers? During a previous build, a friend did this for me and he had grinded in banana grooves on my rocker shafts.
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
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Re: Rocker Shaft Oiling on a Big Block
[Re: Pyper70]
#673571
05/13/10 04:34 PM
05/13/10 04:34 PM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
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I Win
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U.S.S.A.
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Quote:
Does Banana grooving the holes help any with the oiling on roller rockers? During a previous build, a friend did this for me and he had grinded in banana grooves on my rocker shafts.
Yes it does.
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