Harland sharp and oil restrictors
#2479083
04/07/18 10:08 PM
04/07/18 10:08 PM
|
Joined: Oct 2003
Posts: 108 Wisconsin
MagnumExpress
OP
member
|
OP
member
Joined: Oct 2003
Posts: 108
Wisconsin
|
Looking for opinions. I am running Indy 440-1 heads with external oil lines to heads. Just freshened motor. Installed aluminum main caps and girdle. New roller lifters. New pushrods. New Harland sharp 1.6 ratio rocker arms. New oil pump. It has lower oil pressure than it had before rebuild. I had the top end restricted at .070 using Indy rocker arms. Now restricted to .045. Oil pressure still low. Top end is flooded with oil. Anyone out there have experience with this issue and how small is to small for restriction. Never had any issues in the past 1000 runs with this prior to new setup
#9 in the world. 2006 IHRA Super Rod 2010 IHRA Div.5 Hot Rod Champion
|
|
|
Re: Harland sharp and oil restrictors
[Re: MagnumExpress]
#2479085
04/07/18 10:11 PM
04/07/18 10:11 PM
|
Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
|
I use one .039 restrictor in each line to my Indy heads with external oil lines with Harland Sharp full roller rocker arms, street or and race only IHTHs
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Harland sharp and oil restrictors
[Re: Cab_Burge]
#2479105
04/07/18 10:44 PM
04/07/18 10:44 PM
|
Joined: Oct 2003
Posts: 108 Wisconsin
MagnumExpress
OP
member
|
OP
member
Joined: Oct 2003
Posts: 108
Wisconsin
|
Thanks. I am assuming you have no issues with pushrods!
#9 in the world. 2006 IHRA Super Rod 2010 IHRA Div.5 Hot Rod Champion
|
|
|
Re: Harland sharp and oil restrictors
[Re: MagnumExpress]
#2479176
04/08/18 12:45 AM
04/08/18 12:45 AM
|
Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
|
Thanks. I am assuming you have no issues with pushrods! None yet and none that I'm aware of, yet I think the big thing about hurting pushrods is when they rub against the head or block and or won't drop down away from the adjusters when setting the valve lash cold, in other words pulling the pushrod up against the adjuster and seeing if it will drop down on it's own weight Don't get me wrong, I have hurt more than one pushrod due to not preventing the problems that burn the tips ups BTW, I do use Manton series 3, or better, only on all my Hi Po motors, street or strip
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Harland sharp and oil restrictors
[Re: Cab_Burge]
#2479186
04/08/18 01:08 AM
04/08/18 01:08 AM
|
Joined: Oct 2003
Posts: 108 Wisconsin
MagnumExpress
OP
member
|
OP
member
Joined: Oct 2003
Posts: 108
Wisconsin
|
I have plenty of clearance around pushrods. Just so not used to having low oil pressure. Thanks for your reply
#9 in the world. 2006 IHRA Super Rod 2010 IHRA Div.5 Hot Rod Champion
|
|
|
Re: Harland sharp and oil restrictors
[Re: MagnumExpress]
#2479326
04/08/18 12:10 PM
04/08/18 12:10 PM
|
Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
It has lower oil pressure than it had before rebuild. I had the top end restricted at .070 using Indy rocker arms. Now restricted to .045. Oil pressure still low. Never had any issues in the past 1000 runs with this prior to new setup I'd keep digging. new pump/restricted more & now less psi... I dont have an ans but I would check everything (relevent) that was changed starting with the pump.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Harland sharp and oil restrictors
[Re: MagnumExpress]
#2479328
04/08/18 12:13 PM
04/08/18 12:13 PM
|
Joined: Nov 2004
Posts: 3,547 Syracuse,NY
CompWedgeEngines
master
|
master
Joined: Nov 2004
Posts: 3,547
Syracuse,NY
|
What pump?
What block?
What lifters and is the block bushed? What is the lifter to bore clearance? Any changes made to block to assist in oil return?
All that said, I often start with .045, and typically will reduce from there. I would not go much below .030 usually though. The beauty is, its a very fast and easy change to make, and then check it. Has the engine been down the track yet? Need to see how it acts up at speed, RPM and under motion.
Pull the valley center plate, and prime with a drill. Will probably see everything you need to know, along with same on rockers.
Last edited by CompWedgeEngines; 04/08/18 12:16 PM.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
|
|
|
Re: Harland sharp and oil restrictors
[Re: MagnumExpress]
#2479391
04/08/18 01:25 PM
04/08/18 01:25 PM
|
Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
master
|
master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
|
I took my 915 castings off that was using stock oil feed to H/S rockers, to SR's with oil feed from back of block. Finally leveled out oil pressure with .040 restrictors in each line.
[image][/image]
|
|
|
Re: Harland sharp and oil restrictors
[Re: CompWedgeEngines]
#2479521
04/08/18 05:25 PM
04/08/18 05:25 PM
|
Joined: Oct 2003
Posts: 108 Wisconsin
MagnumExpress
OP
member
|
OP
member
Joined: Oct 2003
Posts: 108
Wisconsin
|
Stock block. Milodon dual line swinging pickup. M63hv pump. Lifters are comp cams endure x. Oil pressure is at 45 at idle. Instantly jumps to 75 with a little throttle. I know this is still ok just not used to it being below 65 at idle. Am I just paranoid? I have run the same block for almost 20 years and this is the first time I have ever had oil pressure this low.
#9 in the world. 2006 IHRA Super Rod 2010 IHRA Div.5 Hot Rod Champion
|
|
|
Re: Harland sharp and oil restrictors
[Re: MagnumExpress]
#2479621
04/08/18 09:17 PM
04/08/18 09:17 PM
|
Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
|
Lifters are comp cams endure x. Oil pressure is at 45 at idle. Instantly jumps to 75 with a little throttle. I know this is still ok just not used to it being below 65 at idle. Am I just paranoid? I have run the same block for almost 20 years and this is the first time I have ever had oil pressure this low. Me thinks your worried over nothing AKA your golden My old pump gas 400 stroker motor had 20 lbs at 850 RPM idle with 5W20 Wt. oil at 170+ F oil temps here in the summer, it had 30 Lbs. at 1200 and 65 lbs. above 3000 RPM I use the ten Lbs. for each 1000 RPM rule on determining if I have enough oil pressure
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Harland sharp and oil restrictors
[Re: MagnumExpress]
#2479623
04/08/18 09:21 PM
04/08/18 09:21 PM
|
Joined: Oct 2003
Posts: 108 Wisconsin
MagnumExpress
OP
member
|
OP
member
Joined: Oct 2003
Posts: 108
Wisconsin
|
Thanks for all the input. Restricted oil to .032 to each head. Also removed oil pump relief valve and polished it. I forgot to do this when I installed it. Oil pressure steady at 65 at hot idle and 80 at approximately 2500 rpm
#9 in the world. 2006 IHRA Super Rod 2010 IHRA Div.5 Hot Rod Champion
|
|
|
|
|