Rocker not oiling
#284549
04/11/09 11:29 AM
04/11/09 11:29 AM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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I was loading the car up ready to go and had the car idling for awhile. Noticed a tick in the VCs that kept getting louder and louder. Pulled the cover and the #7 exhaust rocker was covered with burnt oil. Pulled everything apart and it all looked good. Oil was on the inside of all of the rockers, the rest of the tips, just not the cup/ball on the #7 exhaust rocker. I pulled the shaft off earlier in the week to look everything over, took all the rockers off and put it back together.
Any ideas why it would mysteriously stop oiling?
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: Rocker not oiling
[Re: Von]
#284550
04/11/09 11:39 AM
04/11/09 11:39 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Posts: 52,972
Romeo MI
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If you have oil to all the rest, take a small wire and stick it through the rocker to see if there is a blockage it the small port going to the tip (A small bit of trash could have got in from the build up and thats the first one coming up from the head)
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Re: Rocker not oiling
[Re: emarine01]
#284552
04/11/09 11:52 AM
04/11/09 11:52 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Posts: 52,972
Romeo MI
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Quote:
The #7 exhaust is the last one in line to get oil , and the hole for the push rod cup is high up , you might be bleeding oil off before it gets there , crank it with the cover off and see how much oil its loosing down the line
I stand corrected, I can never remember second from the front or rear and which side. If all the rest are oiling check the rocker and make sure the cup/adjuster has the groove lining up with the hole in the rocker... if adjusted to far down it wont line up
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Re: Rocker not oiling UPDATE
[Re: emarine01]
#284554
04/14/09 04:29 PM
04/14/09 04:29 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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OK, so I took the shaft off, cleaned up the offending rocker on #7 exhaust, (set the lash) and put it back together. Ran it down the road a few miles, came back, took it apart and now the #4 exhaust rocker has no oil. #7 is fine, but now its #4. Can too short of pushrods, ie too many threads of the adjuster below the rocker cause this problem? Ive known my pushrods are on the short side, about 6 1/2 threads sticking out below the rocker. Also, how much oil should the top of the motor be getting? With the motor running, rev'd to 3k or so, there sure doesnt appear to be much oil getting to the top. Its been like this since it was put together. 650 street miles, 16 or so passes. I dont have any restrictors or anything anywhere?
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: Rocker not oiling UPDATE
[Re: Von]
#284555
04/14/09 04:39 PM
04/14/09 04:39 PM
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Joined: Feb 2004
Posts: 3,076 Renton, Wa.
Classof70Chally
super gas
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super gas
Joined: Feb 2004
Posts: 3,076
Renton, Wa.
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Quote:
OK, so I took the shaft off, cleaned up the offending rocker on #7 exhaust, (set the lash) and put it back together. Ran it down the road a few miles, came back, took it apart and now the #4 exhaust rocker has no oil. #7 is fine, but now its #4.
Can too short of pushrods, ie too many threads of the adjuster below the rocker cause this problem? Ive known my pushrods are on the short side, about 6 1/2 threads sticking out below the rocker.
Also, how much oil should the top of the motor be getting? With the motor running, rev'd to 3k or so, there sure doesnt appear to be much oil getting to the top. Its been like this since it was put together. 650 street miles, 16 or so passes. I dont have any restrictors or anything anywhere?
You don't mention what brand/model of rockers you have. When I installed my Comp ProMagnums I found that if there were more than 2 full threads showing the oil holes on the adjusters and rocker bodies did not line up. If you have 6 threads showing that is probably your problem IMHO.
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Re: Rocker not oiling UPDATE
[Re: Von]
#284556
04/14/09 04:50 PM
04/14/09 04:50 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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Quote:
OK, so I took the shaft off, cleaned up the offending rocker on #7 exhaust, (set the lash) and put it back together. Ran it down the road a few miles, came back, took it apart and now the #4 exhaust rocker has no oil. #7 is fine, but now its #4.
Can too short of pushrods, ie too many threads of the adjuster below the rocker cause this problem? Ive known my pushrods are on the short side, about 6 1/2 threads sticking out below the rocker.
Also, how much oil should the top of the motor be getting? With the motor running, rev'd to 3k or so, there sure doesnt appear to be much oil getting to the top. Its been like this since it was put together. 650 street miles, 16 or so passes. I dont have any restrictors or anything anywhere?
61/2 threads showing IS WAY TOO MUCH, you are closing off the oil port in the adjuster.... unless yours have a hole in the rocker that squirts oil at the pushrod cup(you would see it on the under side of the rocker) Either way 6 1/2 threads showing is WAY TOO MUCH and your side loading the adjuster and I'm surprised you havent broke them by now
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Re: Rocker not oiling UPDATE
[Re: Classof70Chally]
#284558
04/14/09 05:01 PM
04/14/09 05:01 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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Quote:
[You don't mention what brand/model of rockers you have. When I installed my Comp ProMagnums I found that if there were more than 2 full threads showing the oil holes on the adjusters and rocker bodies did not line up. If you have 6 threads showing that is probably your problem IMHO.
Im using Dove rockers that are meant for BS heads, but Ive swapped and spaced the rockers to work on standard heads. Up to now they have worked fine.
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: Rocker not oiling UPDATE
[Re: MR_P_BODY]
#284559
04/14/09 05:05 PM
04/14/09 05:05 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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[quote 61/2 threads showing IS WAY TOO MUCH, you are closing off the oil port in the adjuster.... unless yours have a hole in the rocker that squirts oil at the pushrod cup(you would see it on the under side of the rocker) Either way 6 1/2 threads showing is WAY TOO MUCH and your side loading the adjuster and I'm surprised you havent broke them by now
They do have the oil hole underneath the tip, no holes in the adjuster itself. I can tell the rockers are being side loaded by the wear pattern inside of the rockers. So, will the adjusters being too far out, cause the cup to not be oiled properly?
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: Rocker not oiling UPDATE
[Re: emarine01]
#284560
04/14/09 05:05 PM
04/14/09 05:05 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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Quote:
How much oil pressure do you have , pull the rocker shaft and crank it on the starter, oil should fly out the hole feeding the shaft
Plenty of pressure. 60 lb at idle, 85 or so WOT.
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: Rocker not oiling UPDATE
[Re: emarine01]
#284561
04/14/09 05:07 PM
04/14/09 05:07 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Posts: 52,972
Romeo MI
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Quote:
How much oil pressure do you have , pull the rocker shaft and crank it on the starter, oil should fly out the hole feeding the shaft
Thats what I would do right now to see if you have the supply... while you have the shaft off
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Re: Rocker not oiling UPDATE
[Re: MR_P_BODY]
#284563
04/14/09 05:12 PM
04/14/09 05:12 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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OP
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Posts: 3,698
NE Oklahoma
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Quote:
Quote:
How much oil pressure do you have , pull the rocker shaft and crank it on the starter, oil should fly out the hole feeding the shaft
Thats what I would do right now to see if you have the supply... while you have the shaft off
OK. Will do.
Soo, what if I dont have the supply? Where could the restriction be?
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: Rocker not oiling UPDATE
[Re: Von]
#284564
04/14/09 05:19 PM
04/14/09 05:19 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Quote:
Quote:
Quote:
How much oil pressure do you have , pull the rocker shaft and crank it on the starter, oil should fly out the hole feeding the shaft
Thats what I would do right now to see if you have the supply... while you have the shaft off
OK. Will do.
Soo, what if I dont have the supply? Where could the restriction be?
You should be able to run a stiff wire(welding rod tig type) and bump into the cam going down the oil port in the head Also put the rocker shaft hold down bolt in the hole when you test for oil... it could be blocking it off which would mean the oil hole coming up isnt big enough... also the hole in the rocker shaft might be too small to allow the oil into the shaft... just things to look at
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Re: Rocker not oiling UPDATE
[Re: Von]
#284565
04/14/09 07:55 PM
04/14/09 07:55 PM
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Joined: Dec 2007
Posts: 12,587 Great Neck,LI,new york
hemi-itis
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
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Quote:
[quote
61/2 threads showing IS WAY TOO MUCH, you are closing off the oil port in the adjuster.... unless yours have a hole in the rocker that squirts oil at the pushrod cup(you would see it on the under side of the rocker) Either way 6 1/2 threads showing is WAY TOO MUCH and your side loading the adjuster and I'm surprised you havent broke them by now
They do have the oil hole underneath the tip, no holes in the adjuster itself. I can tell the rockers are being side loaded by the wear pattern inside of the rockers. So, will the adjusters being too far out, cause the cup to not be oiled properly?
Geometry is wrong!Rockers are covering oil supply orifice.You need longer pushrods. What lifters are you using?Can you add pushrod oiling??
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Rocker not oiling UPDATE
[Re: hemi-itis]
#284566
04/14/09 08:08 PM
04/14/09 08:08 PM
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Joined: Nov 2003
Posts: 6,293 Rock Springs
Bob_Coomer
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Dont run the engine any more, I suggest pulling the dist and intermediate shaft, and prime it up with a drill, have some one roll the engine over with a breaker bar while priming, make sure you oil flowing from the rocker arms before making it down the road again. There shouldn't be no reason not to have oil to the rockers if the other in the same shaft have oil, only explanation is blockage as other have said.
Is the rockers banana grooved? Now would be a good time to do so, doesn't take long with a chain saw file.
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: Rocker not oiling UPDATE
[Re: Bob_Coomer]
#284568
04/14/09 08:30 PM
04/14/09 08:30 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Quote:
Went back and read a few reply's, the guys are right hats too many threads showing. I someone hasn't already suggested, a easy and quick fix, is a set of lash caps. Standard valve diameter is 3/8, after market like Eddy, Indy etc use 11/32, and Hemis are even smaller, get some thick ones..Like .080-.100 thick that have the small oil hole in them...Shouldn't run you no more than $40 shipped from the parts store.
Even with lash caps that would take up .0416 per turn on the adjuster so thats about 2 1/2 turns(if they were .100 thick) still leaving 4 threads showing, he NEEDS push rods... at the correct length.
But I have a question..... what part of the rocker are you burning up.... the push rod cup at the rocker .... or where the rocker is riding on the shaft. If your burning the cup... that hole that sprays the oil is shooting the oil to a certain spot and the cup is no where near that point(1 1/2 threads)
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