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Re: Ongoing push rod cup oiling problem.
[Re: B-STUNG]
#858612
11/21/10 11:22 AM
11/21/10 11:22 AM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
The pushrod cup oil hole should intersect the oil channel like this image (attached).
Once I chamfered the oil hole to ensure it intersects the oil channel, I got a good supply of oil to the cups and stopped burning pushrods.
B stung, very good drawing and I had more or less the same thought while asleep. I know the BS head Dove rockers dont have a oiling channel in them. After banana grooving the shafts things improved, some, but not enough. The current rockers do have a channel, but I'll pull one off to see how it looks in relation to your pic.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Ongoing push rod cup oiling problem.
[Re: Twostick]
#858613
11/21/10 11:24 AM
11/21/10 11:24 AM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
One other thing. Is the rocker and the shaft oiling ok as in not trying to seize to the shaft?
Kevin
\
Yes, the rockers and shafts are oiling OK. The tips are getting plenty of oil.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Ongoing push rod cup oiling problem.
[Re: Hemiroid]
#858614
11/21/10 11:30 AM
11/21/10 11:30 AM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
master
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
Quote:
Well, it's really a pretty simple process of elimination. If you remove the stud from the oiling pedestal and you see a foot tall shot of oil shoot out then you know you're getting a supply of oil from the cam and through the block/head passages.
The next thing to check is if you remove the stud and replace it with a bolt does it change anything? Is the o.d. of the stud bigger than the o.d. of the bolt where the threads end? Also need to check the shaft holes to make sure they're all open and that there's no obstructions inside.
Also I saw you mention that it's not possible that the amount of adjuster out of the rocker is causing a problem. I disagree as I've seen this cause the exact failures you're encountering. If the adjuster is too long out of the bottom it can fling the oil off before it ever makes it to the cup. I know it seems impossible but it happens. It's kind of rocker specific as different rockers oil differently. Some will provide enough oil no matter how long the adjuster, and others will smoke cups if the length isn't perfect.
Not enough oil coming out of the back of the rockers at this point for it to be a length problem...as far as I can tell.
With the first set of rockers, as I said I had 3 different lengths of pushrods and the oiling didnt change a bit. I also swapped adjusters to see if it made a difference, it didnt.
As far as the bolts, studs, etc. Ive had stock bolts in it, socket head bolts and now studs.
With the current configuration (rockers, studs, shafts, hold downs, spacers, etc) it has the least amount of flow.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Ongoing pushrod cup oiling problem.
[Re: Big Squeeze]
#858620
11/21/10 12:37 PM
11/21/10 12:37 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
If you'd have bought Harland Sharp's like I told you years ago I bet you wouldn't be having this problem.........     ........I KNOW you've got the money.....PVP......  
Yup cheap rocker arms cause these kinds of problems...
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Re: Ongoing pushrod cup oiling problem.
[Re: Big Squeeze]
#858621
11/21/10 12:46 PM
11/21/10 12:46 PM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
master
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
If you'd have bought Harland Sharp's like I told you years ago I bet you wouldn't be having this problem......... ........I KNOW you've got the money.....PVP......
If I was gonna buy a set of HS, they dang sure wouldnt be for this motor.....
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Ongoing pushrod cup oiling problem.
[Re: Von]
#858622
11/21/10 12:54 PM
11/21/10 12:54 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
If you'd have bought Harland Sharp's like I told you years ago I bet you wouldn't be having this problem......... ........I KNOW you've got the money.....PVP......
If I was gonna buy a set of HS, they dang sure wouldnt be for this motor.....
What does the motor matter? Low or hi hp, you can't run with burnt up push rods...
And another thing to consider. Once the push rod turns blue, the cup or adjuster in the rocker arm is junk too.
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Re: Ongoing pushrod cup oiling problem.
[Re: Challenger 1]
#858623
11/21/10 01:02 PM
11/21/10 01:02 PM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
master
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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[quote
What does the motor matter? Low or hi hp, you can't run with burn up push rods...
Umm, cuz Ive got a BS head 512 in the works...Not gonna put down 6 bills on a set of rockers that might not see any use. As far as Im concerned the car can sit till the other motor is ready. Based on the fact that the block has been at the machine shop for 10 months and nothing has happended, might be awhile.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Ongoing pushrod cup oiling problem.
[Re: Von]
#858624
11/21/10 01:07 PM
11/21/10 01:07 PM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
master
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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BTW, how do you tell if a shaft is of the hardened chrome variety?
The shafts I have now are supposedly MP hardened chrome, but I dont know that for sure.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Ongoing pushrod cup oiling problem.
[Re: Von]
#858626
11/21/10 11:37 PM
11/21/10 11:37 PM
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Joined: Jan 2003
Posts: 14,504
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,504
So. Burlington, Vt.
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i'd just put back on the rockers that werent burning up pushrods.......and run it.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: Ongoing pushrod cup oiling problem.
[Re: fast68plymouth]
#858627
11/21/10 11:39 PM
11/21/10 11:39 PM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
master
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
i'd just put back on the rockers that werent burning up pushrods.......and run it.
That would seem logical, cept the ratio only worked out to 1.39...
Big seat of the pants difference between the 1.39s and 1.58s...
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Ongoing pushrod cup oiling problem.
[Re: Von]
#858628
11/21/10 11:41 PM
11/21/10 11:41 PM
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Joined: Jan 2003
Posts: 14,504
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,504
So. Burlington, Vt.
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cams are cheaper that rockers  (well....cheaper than new rockers anyway)
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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