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Restricting bb rocker shaft oil (internal feed)? #1134777 12/15/11 06:43 PM 12/15/11 06:43 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH OP Taking time off to work on my car
BradH OP Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	If you wanted to limit the flow of oil to the rocker shafts using OEM block & internal-oiling (OEM-style) heads, what would be the best way? Would you put some type of restrictor in the deck of the block? Would you drill & tap the head's oil feed passage to use a replaceable jet? Just looking for ideas, should the need arise. Thanks.

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134778 12/15/11 07:03 PM 12/15/11 07:03 PM
Joined: Jan 2003 Posts: 9,872 Weddington, N.C. Streetwize master
Streetwize master Joined: Jan 2003 Posts: 9,872 Weddington, N.C.	Back in the old days we used to countersink and tap the oil passages for a holley jet...and some people use tubes that were just pressed and interference fit. They cant go anywhere. And some guys put the restrictors in the block and others in the head, yet others (maybe the easiest way) just put the #4 cam bearing in off-centered over the valley passages...lots of ways to skin a cat. WIZE World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker! https://www.youtube.com/watch?v=-mWzLma3YGI In Car: https://www.youtube.com/watch?v=PjXcf95e6v0

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134779 12/15/11 07:05 PM 12/15/11 07:05 PM
Joined: Nov 2003 Posts: 5,160 Texas dannysbee master
dannysbee master Joined: Nov 2003 Posts: 5,160 Texas	Engine builder I know does it with the cam bearing. Makes new hole in bearing the size he wants to restrict. Getting old just means you were smarter than some and luckier than others.

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134780 12/15/11 07:09 PM 12/15/11 07:09 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Since you are unsure if you will be reducing the flow I would drill and tap the point just below where the rocker shaft mounts, that would be the easiest point to change the restriction (not having to pull the heads to change it if it was in the block surface)

Re: Restricting bb rocker shaft oil (internal feed)? [Re: MR_P_BODY] #1134781 12/15/11 07:37 PM 12/15/11 07:37 PM
Joined: Mar 2007 Posts: 3,300 Northern Indiana Dunnuck Racing master
Dunnuck Racing master Joined: Mar 2007 Posts: 3,300 Northern Indiana	Quote: Since you are unsure if you will be reducing the flow I would drill and tap the point just below where the rocker shaft mounts, that would be the easiest point to change the restriction (not having to pull the heads to change it if it was in the block surface) I agree with Mr.P on the where to put it. But I don't believe restricting the oil to the top end is a good idea for 99% of us. Heat is a big killer to valve springs and I would rather have all the oil I can get up there to keep them cool. I would rather work on better ways to keep oil returning fast and off of the rotating assembly upon return than restict the oiling. Keith www.dunnuckracing.com

Re: Restricting bb rocker shaft oil (internal feed)? [Re: Dunnuck Racing] #1134782 12/15/11 07:45 PM 12/15/11 07:45 PM
Joined: Jan 2003 Posts: 9,872 Weddington, N.C. Streetwize master
Streetwize master Joined: Jan 2003 Posts: 9,872 Weddington, N.C.	So long as you're not starving the bearings and the oil return is quick enough....I no longer worry about pumping too much up top. With the springs we run today the oil's surfactant qualities (their ability to wick away heat) is almost equally important as t otheir lubrication qualities. WIZE World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker! https://www.youtube.com/watch?v=-mWzLma3YGI In Car: https://www.youtube.com/watch?v=PjXcf95e6v0

Re: Restricting bb rocker shaft oil (internal feed)? [Re: Streetwize] #1134783 12/15/11 07:51 PM 12/15/11 07:51 PM
Joined: Jul 2008 Posts: 30,424 Florida STAYcation dOrk ! The village idiot's idiot
dOrk ! The village idiot's idiot Joined: Jul 2008 Posts: 30,424 Florida STAYcation	x 99 on keeping-the-flow for the VS cooling. Now if you want ... ...you can DIRECTLY "plumb" the drain-back oil from up-there back into the pan.

Re: Restricting bb rocker shaft oil (internal feed)? [Re: dOrk !] #1134784 12/15/11 08:08 PM 12/15/11 08:08 PM
Joined: Nov 2003 Posts: 5,160 Texas dannysbee master
dannysbee master Joined: Nov 2003 Posts: 5,160 Texas	Brad did you see the mod that TrendZ posted. I really did like his idea. He positioned the cam bearing as to cut all the oil feed off of the cam bearing which would redirect that oil to the rods and mains. Then he drills a hole into the head feed galleys, both sides, then directly into the main oil galleys. The oil restriction would be how big a hole you drill into the main galleys. Then drill and tap your head feed galleys for plugs. Constant feed oil to heads straight off the main galley. Getting old just means you were smarter than some and luckier than others.

Re: Restricting bb rocker shaft oil (internal feed)? [Re: dannysbee] #1134785 12/15/11 08:32 PM 12/15/11 08:32 PM
Joined: Jan 2006 Posts: 40 Central Pa. U.S.A. B Bigfury member
Bigfury member B Joined: Jan 2006 Posts: 40 Central Pa. U.S.A.	What kind of ideas is there for returning more oil away from the crank???? Like some kind of drain from the rear of the head to the pan?

Re: Restricting bb rocker shaft oil (internal feed)? [Re: Bigfury] #1134786 12/15/11 08:36 PM 12/15/11 08:36 PM
Joined: Jul 2008 Posts: 30,424 Florida STAYcation dOrk ! The village idiot's idiot
dOrk ! The village idiot's idiot Joined: Jul 2008 Posts: 30,424 Florida STAYcation	Quote: What kind of ideas is there for returning more oil away from the crank???? Like some kind of drain from the rear of the head to the pan? JUST what I said at 5:51 ...

Re: Restricting bb rocker shaft oil (internal feed)? [Re: dOrk !] #1134787 12/15/11 08:59 PM 12/15/11 08:59 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	if you look at the cam bearings hole alignment to the block passage and the design of the oil passages in the #4 cam journal the factory design already has restriction built into it. keep in mind that the #4 cam journal's oil passages only have a brief alignment with the block passage every 720 degrees of crankshaft rotation.

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134788 12/16/11 12:53 AM 12/16/11 12:53 AM
Joined: Aug 2003 Posts: 43,152 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,152 Bend,OR USA	Quote: If you wanted to limit the flow of oil to the rocker shafts using OEM block & internal-oiling (OEM-style) heads, what would be the best way? Would you put some type of restrictor in the deck of the block? Would you drill & tap the head's oil feed passage to use a replaceable jet? Just looking for ideas, should the need arise. Thanks. I like to oil the rockers full time first and then use a .040 restrictor in the oil feed to the rockers, head or block, both work Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Restricting bb rocker shaft oil (internal feed)? [Re: Cab_Burge] #1134789 12/16/11 11:33 AM 12/16/11 11:33 AM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH OP Taking time off to work on my car
BradH OP Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Quote: I like to oil the rockers full time first and then use a .040 restrictor in the oil feed to the rockers, head or block, both work Yeah, something like that. I've been getting my #4 cam journal's grooved for full-time oiling, but was thinking it might be helpful to be able to control the passage size actually feeding the rocker shafts. Something on the "top half", rather than requiring the heads to be pulled to change, would certainly be better.

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134790 12/16/11 01:11 PM 12/16/11 01:11 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton master
Clanton master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	it looks to me that a roll pin type sleeve could be pushed in the passage down from the shaft side. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134791 12/16/11 01:16 PM 12/16/11 01:16 PM
Joined: Jan 2003 Posts: 8,022 Tulsa OK Bad340fish master
Bad340fish master Joined: Jan 2003 Posts: 8,022 Tulsa OK	Cab, are you using that .040 restriction on your street motors? I believe my small block is filling the valve covers on WOT runs and leaking out the breathers. I have erson needle bearing rockers and a grooved cam so it oils ALOT all the time. I have been considering restricting the oil some to see if it helps the bleeding breathers, it has good baffles already. I was considering external drains but my block is tubed so the lifters oil off of the drain back. 68 Barracuda Formula S 340

Re: Restricting bb rocker shaft oil (internal feed)? [Re: Bad340fish] #1134792 12/16/11 03:18 PM 12/16/11 03:18 PM
Joined: Aug 2003 Posts: 43,152 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,152 Bend,OR USA	I do the full time oiling on any motor that has a solid roller cam I do it for additional oiling and cooling to the valve springs I have seen several BB Mopars really flood the top end without retricting the feed Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Restricting bb rocker shaft oil (internal feed)? [Re: Cab_Burge] #1134793 12/16/11 06:47 PM 12/16/11 06:47 PM
Joined: Jan 2005 Posts: 716 Indiana 6 65dragnet super stock
65dragnet super stock 6 Joined: Jan 2005 Posts: 716 Indiana	Quote: I do the full time oiling on any motor that has a solid roller cam I do it for additional oiling and cooling to the valve springs I have seen several BB Mopars really flood the top end without retricting the feed I have a 499/400 with full time oiling and I restricted the block with a .100 orfice and it still floods the top and goes out the breathers. I'm doing a .040 next E. Williams 65 Coronet 500 3400lbs w/d, 446, Indy EZ'S, A&A transbrake,Comp 650 lift cam, 6.50 @ 105 mph 1/8th 10.25 @ 130mph 1/4

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134794 01/19/12 02:36 PM 01/19/12 02:36 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH OP Taking time off to work on my car
BradH OP Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Update - I'm looking at adding screw-in restrictors into the cast-in rocker shaft stands on my Victors. Should the restrictors be brass or stainless steel for this use? Brass would be easier to drill, but would stainless steel be better for anti-corrosion purposes?

Re: Restricting bb rocker shaft oil (internal feed)? [Re: BradH] #1134795 01/19/12 04:03 PM 01/19/12 04:03 PM
Joined: Aug 2003 Posts: 43,152 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,152 Bend,OR USA	Brass is good Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Restricting bb rocker shaft oil (internal feed)? [Re: Cab_Burge] #1134796 01/19/12 05:06 PM 01/19/12 05:06 PM
Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey J jamesc master
jamesc master J Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey	i usually groove the cam and install .060" orifices in the heads. not sure if the victors are the same but iirc you can use a 1/4-20 (or is it 10-32) setscrew in the passage below the rocker stand. i think you can just tap the existing hole with a 1/4-20 tap. i do get a little weird about dissimilar metals and electrolysis but there shouldn't be any moisture there. i know guys do really cut back on the oil to the heads but you'll never catch me doing it. i've seen too much burned up rocker gear over the years.

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