Spray bar valve cover
#2652985
05/07/19 01:40 PM
05/07/19 01:40 PM
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Joined: Feb 2009
Posts: 345 Arkansas
JoWeTu_6
OP
enthusiast
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OP
enthusiast
Joined: Feb 2009
Posts: 345
Arkansas
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Hey guys it's been awhile since my last post. I'm building a spray bar set up for my 572-13 valve covers. I plan on using 3/16 brake line. But one thing I can't find any info on is what size holes to put in the spray bar it self. Can anyone help with that? Needee
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Re: Spray bar valve cover
[Re: Stanton]
#2653130
05/07/19 07:45 PM
05/07/19 07:45 PM
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Joined: Feb 2009
Posts: 345 Arkansas
JoWeTu_6
OP
enthusiast
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OP
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Joined: Feb 2009
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Arkansas
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Ok, will do LoL I should be able to do that. Thanx
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Re: Spray bar valve cover
[Re: JoWeTu_6]
#2653176
05/07/19 09:49 PM
05/07/19 09:49 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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I have a set of spray bar V.C. that came with a set of Indy 440-1 heads that I bought that has Jesel paired shaft rocker arms on them, I tried to use my numbered drill bit set to see how big the holes are in them, a #60 bit was to big Those lines are fed by a # 3 AN hose which is 3/16 I.D. I think My wall chart shows a #60 bit to be .040 so the holes are smaller than that I have another set of smaller numbered drill bits(61 to 80) in my race trailer but it is 45 miles away now with a customer car in it at a paint and body shop, I'm hoping I'll have it back by Friday to go race my car this weekend If you don't find out what size to use by then I will be glad to find out what size the holes are in mine
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Spray bar valve cover
[Re: JoWeTu_6]
#2653201
05/07/19 10:23 PM
05/07/19 10:23 PM
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Joined: Aug 2006
Posts: 614 Michigan
Get-X
mopar
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mopar
Joined: Aug 2006
Posts: 614
Michigan
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The holes are extremely small. I believe they were like .015" on our B1 engine.
'65 Belvedere '68 GTX '57 Dodge pickup
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Re: Spray bar valve cover
[Re: JoWeTu_6]
#2653340
05/08/19 10:52 AM
05/08/19 10:52 AM
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Joined: Jan 2012
Posts: 2,730 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,730
Stuttgart, Arkansas
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Ok, I think I have it using 3/16 brake line my calculations have me using a numder 49 drill bit. Waaaaay too big. I'm not an expert on that but that size times 16. No.
2011 Drag Pak Challenger
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Re: Spray bar valve cover
[Re: fast68plymouth]
#2653405
05/08/19 02:02 PM
05/08/19 02:02 PM
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Joined: Jan 2003
Posts: 2,987 A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,987
A shed in England
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JFI . Both of the spray bar oil line kits we have used from Indy have had a restrictor in the T piece on the valve cover.
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Spray bar valve cover
[Re: JoWeTu_6]
#2653436
05/08/19 04:03 PM
05/08/19 04:03 PM
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Joined: Feb 2009
Posts: 345 Arkansas
JoWeTu_6
OP
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OP
enthusiast
Joined: Feb 2009
Posts: 345
Arkansas
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Oooops I must have carried a 10 when I should have droped a 5 some where. Thanx for the heads up fellas. I wouldn't have caught that thought it looked big but I was giong with the numbers and they where wrong
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Re: Spray bar valve cover
[Re: Cab_Burge]
#2653443
05/08/19 04:22 PM
05/08/19 04:22 PM
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Joined: Feb 2009
Posts: 345 Arkansas
JoWeTu_6
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OP
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Ok , Cab it's been awhile since we spoke, Friday is fine I'm in no hurry when it comes to getting it wright. Quick question you guys, I was just thinking with a spray bar set up do I want them pointing at the push rods and adjusters or the rollers and valve stems?
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Re: Spray bar valve cover
[Re: JoWeTu_6]
#2653459
05/08/19 05:13 PM
05/08/19 05:13 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Ok , Cab it's been awhile since we spoke, Friday is fine I'm in no hurry when it comes to getting it wright. Quick question you guys, I was just thinking with a spray bar set up do I want them pointing at the push rods and adjusters or the rollers and valve stems? I believe that is already set for you on a spray bar.. but my way of thinking is that it should be pointed at the adjusters and the stems.. the oil flows down hill and will lube the rollers
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Re: Spray bar valve cover
[Re: JoWeTu_6]
#2653598
05/09/19 08:42 AM
05/09/19 08:42 AM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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I remember reading a comment that in a dead-end system (line enters cover at one end) most of the oil will go to the closest valve, and that to balance out the delivery the closest holes should be smallest, but how much?
Boffin Emeritus
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Re: Spray bar valve cover
[Re: polyspheric]
#2653607
05/09/19 09:07 AM
05/09/19 09:07 AM
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Joined: Oct 2005
Posts: 9,038 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 9,038
Ontario, Canada
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I remember reading a comment that in a dead-end system (line enters cover at one end) most of the oil will go to the closest valve, and that to balance out the delivery the closest holes should be smallest, but how much? Nah. Before any oil can squirt out the line has to fill. Now, because the area of the holes is equal to or smaller than the feed line they will all squirt the same amount (or pretty damn close to it). I think the biggest issue will be drilling the holes and not leaving a burr inside the tube. Also, on all the Indy spray bars I've seen, the oil holes have a fairly wide chamfer on them - probably to widen the spray pattern.
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