School me on BB topside oiling
#2562676
10/11/18 11:47 PM
10/11/18 11:47 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
OP
master
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OP
master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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I’m looking at moving to a new set of rockers to add some ratio / lift to make better use of my heads. My current rockers are bronze bushed units, I’m looking at a set of needle-bearing roller rockers. My assumption is that this change at the shaft would release a ton of oil pressure. (Correct??). Do I need to install a restricter somewhere? Walk me through this please.
Engine currently idles around 45psi and runs at 70psi, 80 at higher RPMs.
Thanks-
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: School me on BB topside oiling
[Re: StealthWedge67]
#2562684
10/12/18 12:02 AM
10/12/18 12:02 AM
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Joined: Sep 2015
Posts: 1,096 Australia
ozymaxwedge
super stock
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super stock
Joined: Sep 2015
Posts: 1,096
Australia
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If you have Indy heads you can restrict the oil at the rear oil line feeds they have, if not Im not sure. I am not a fan of needle roller rockers as I have had one fail putting needle bearings through my engine, one found its way to the oil pump which stopped the pump, snapped the drive and the engine kept running
Last edited by ozymaxwedge; 10/12/18 12:03 AM.
1963 Plymouth Max Wedge 1971 Barracuda
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Re: School me on BB topside oiling
[Re: StealthWedge67]
#2562711
10/12/18 12:33 AM
10/12/18 12:33 AM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Assuming a stock oiling system, you should have no problems. That being said.... If someone has altered the #4 cam journal or bearing with a groove, (common practice that I am strongly against) you best have some sort of restrictor in the supply drilling from the cam to the deck surface. With a grooved #4 cam journal, and no restrictors, you WILL lose about 60% of the oil to #4 main, and #6 rods. Even if you didn’t intentionally alter the oiling, some cam companies alter the journal to save valve train parts (at the cost of the bottom end) There are better ways to get oil up top. Hopefully you have a stock oiling sytem. The stock oiling sends oil in pulses up top.
"use it 'till it breaks, replace as needed"
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Re: School me on BB topside oiling
[Re: StealthWedge67]
#2562720
10/12/18 12:57 AM
10/12/18 12:57 AM
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Joined: Feb 2005
Posts: 20,116 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,116
PA.
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CNC’d Stealth heads. Stock oiling. I did this to my Sons car this year and its working out great with Harlan Sharp rockers on Edelbrock heads. It a small block but the same idea could be used. I tapped the rocker shaft oiling hole on both heads and screwed a brass set screw in with a .060 hole in it. That way if I wanted more or less oil I could simply remove the rocker shaft and go bigger or smaller. I bought a bag a brass set screws off ebay.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: School me on BB topside oiling
[Re: pittsburghracer]
#2562741
10/12/18 01:44 AM
10/12/18 01:44 AM
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Joined: Sep 2015
Posts: 1,096 Australia
ozymaxwedge
super stock
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super stock
Joined: Sep 2015
Posts: 1,096
Australia
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CNC’d Stealth heads. Stock oiling. I did this to my Sons car this year and its working out great with Harlan Sharp rockers on Edelbrock heads. It a small block but the same idea could be used. I tapped the rocker shaft oiling hole on both heads and screwed a brass set screw in with a .060 hole in it. That way if I wanted more or less oil I could simply remove the rocker shaft and go bigger or smaller. I bought a bag a brass set screws off ebay. Im not up with small block but the oil comes up the sides of shaft hold bolt on big block.
1963 Plymouth Max Wedge 1971 Barracuda
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Re: School me on BB topside oiling
[Re: ozymaxwedge]
#2562747
10/12/18 01:47 AM
10/12/18 01:47 AM
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Joined: Aug 2003
Posts: 43,007 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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CNC’d Stealth heads. Stock oiling. I did this to my Sons car this year and its working out great with Harlan Sharp rockers on Edelbrock heads. It a small block but the same idea could be used. I tapped the rocker shaft oiling hole on both heads and screwed a brass set screw in with a .060 hole in it. That way if I wanted more or less oil I could simply remove the rocker shaft and go bigger or smaller. I bought a bag a brass set screws off ebay. Im not up with small block but the oil comes up the sides of shaft hold bolt on big block. SB are the same except they don't oil both sides through the #4 cam journal
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: School me on BB topside oiling
[Re: StealthWedge67]
#2562827
10/12/18 11:44 AM
10/12/18 11:44 AM
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Joined: Jan 2003
Posts: 14,479 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
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If you’ve done no modifications to the oil system that result in having full time top end oiling, then just bolt the rockers on and go.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: School me on BB topside oiling
[Re: StealthWedge67]
#2562897
10/12/18 01:59 PM
10/12/18 01:59 PM
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Joined: Mar 2007
Posts: 3,275 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,275
West Coast, USA
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I’m looking at moving to a new set of rockers to add some ratio / lift to make better use of my heads. My current rockers are bronze bushed units, I’m looking at a set of needle-bearing roller rockers. My assumption is that this change at the shaft would release a ton of oil pressure. (Correct??). Do I need to install a restricter somewhere? Walk me through this please.
Engine currently idles around 45psi and runs at 70psi, 80 at higher RPMs.
Thanks- I would leave the rockers alone and put in the correct cam, lifters and timing set. Fast68Plymouth spec'd an amazing cam for my build. Not knowing what you have now, increasing the ratio on your rocker arms may do little or nothing to take advantage of your set-up. It's all about the combination.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: School me on BB topside oiling
[Re: DrCharles]
#2562906
10/12/18 02:20 PM
10/12/18 02:20 PM
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Joined: May 2005
Posts: 1,944 Apollo, PA.
B1MAXX
top fuel
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top fuel
Joined: May 2005
Posts: 1,944
Apollo, PA.
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hmmm... my 451's cam came with the #4 journal grooved from the factory. It's quite small in width and depth as I remember.
Is there a simple way to add an oiling restrictor with the engine together? I don't want to have to pull the heads to drill and tap. Thanks. There is one way. If you look into the feeding pedestal typically you'll find that the top of the bolt hole is counter bored then the bolt thread starts. In the area of the counter-bore you will typically find the oil galley feed point. If you use thin wall tubing you can sleeve the counter bore area with a pre-drilled bushing made from the tubing.
Last edited by B1MAXX; 10/12/18 02:20 PM.
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