BB full time rocker oiling...restrictor size...
#1335524
11/14/12 11:47 PM
11/14/12 11:47 PM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
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OP
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Going to drill/tap the oil galleys to convert to full time rocker oiling.
I have a couple questions.
1.I am using Erson needle bearing rockers. What size restrictor do I need? I am very concerned with burning pushrod cups...my only reason for converting to full time oiling. Ive fought burning up cups on 2 motors. This motor will have a solid roller, so I dang sure want oil to the cups...
2. Is putting a restrictor in the deck of the head or deck of block the only way? Anyway to put a restrictor in the feed hole under the rocker pedestal....So I can change restrictor size without pulling heads?
3. Should I block the feed holes to the rocker tips to force more oil through the cup area? I blocked the tip feed holes on one set of rockers, but that was with flat tappet springs. Should I be concerned with roller springs needing more oil and not plug the tip feeds?
Thanks for any help!!
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: BB full time rocker oiling...restrictor size...
[Re: Von]
#1335525
11/15/12 12:02 AM
11/15/12 12:02 AM
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Joined: Oct 2005
Posts: 8,871
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,871
Ontario, Canada
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Quote:
2. Is putting a restrictor in the deck of the head or deck of block the only way? Anyway to put a restrictor in the feed hole under the rocker pedestal....So I can change restrictor size without pulling heads?
Restrictor in the deck is pretty much the only way to do a "removable"
restrictor. If you tried to drill & tap up at the pedestal you'd be risking the integrity of the rocker shaft stud.
Quote:
3. Should I block the feed holes to the rocker tips to force more oil through the cup area? I blocked the tip feed holes on one set of rockers, but that was with flat tappet springs. Should I be concerned with roller springs needing more oil and not plug the tip feeds?
I wouldn't block those holes. Harland Sharp doesn't put holes in theirs for spring oiling and I'm concerned with it! And if you watch the oil flow by priming the motor you're going to be shocked at how the oil really only dribbles out of those holes. It will be the rocker motion flinging the oil that provides the lube to the pushrod cups.
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Re: BB full time rocker oiling...restrictor size...
[Re: Von]
#1335526
11/15/12 12:09 AM
11/15/12 12:09 AM
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Joined: Jan 2003
Posts: 75,004
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,004
U.S.S.A.
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Quote:
2. Is putting a restrictor in the deck of the head or deck of block the only way? Anyway to put a restrictor in the feed hole under the rocker pedestal....So I can change restrictor size without pulling heads?
Thanks for any help!!
What size is the passage ?
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Re: BB full time rocker oiling...restrictor size...
[Re: Stanton]
#1335529
11/15/12 01:43 AM
11/15/12 01:43 AM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
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OP
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NE Oklahoma
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Quote:
going to be shocked at how the oil really only dribbles out of those holes. It will be the rocker motion flinging the oil that provides the lube to the pushrod cups. [/quote
I have a set of Hughes rockers that I blocked the tip feed. They did anything but dribble oil. They poured oil everywhere when on the drill. Blocked the tip feed holes and oil gushed out of the cup feed hole...but still burnt up cups.
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: BB full time rocker oiling...restrictor size...
[Re: JohnRR]
#1335530
11/15/12 01:44 AM
11/15/12 01:44 AM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
master
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OP
master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
What size is the passage ?
I'll have to measure, but it appears to be the same size as the feed hole in the head.
They are B1-BS heads..if it matters.
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: BB full time rocker oiling...restrictor size...
[Re: jamesc]
#1335531
11/15/12 01:47 AM
11/15/12 01:47 AM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
OP
master
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OP
master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
on B1 heads
My heads are B1-BS heads. Any idea if the rocker stands are the same on the originals and the BS heads? It might be stupid question, but IDK.
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: BB full time rocker oiling...restrictor size...
[Re: Von]
#1335532
11/15/12 09:55 AM
11/15/12 09:55 AM
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Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
Streetwize
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master
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Posts: 9,875
Weddington, N.C.
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Old school (but not the best) way was to run the fully grooved #4 cam bearing but install it slightly off center so the deck feed passages are ~1/2 restricted.
Last edited by Streetwize; 11/15/12 09:59 AM.
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Re: BB full time rocker oiling...restrictor size...
[Re: Von]
#1335534
01/30/13 01:03 PM
01/30/13 01:03 PM
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Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
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master
Joined: May 2011
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northern,Ohio,USA
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Quote:
Quote:
What size is the passage ?
I'll have to measure, but it appears to be the same size as the feed hole in the head.
They are B1-BS heads..if it matters.
I believe the passage in the rocker stand is .250 and I found a welding tip is just a couple thou bigger so you can sand/file it to fit and have a pre drilled restrictor and the length only needs the edge trimmed.
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I did two blocks by drilling and plugging and then I bought a Crane solid roller cam that had the number four journal grooved 
Groove the cam instead and then thank about using a .040 to .080 restictor in the stock oil galley to the rockers 
That works good