Harland Sharp rockers and now low oilpressure...

Harland Sharp rockers and now low oilpressure... - 10/19/14 06:15 PM

Put Harland Sharp roller rockers # S70016K in my Indy EZ 295 head engine.

Now problem is low oil pressure with engine running at idle, normal temp. The gauge shows just 5 Psi of pressure at idle, the oil pressure does go up instantly with Rpm, but I dont like it that its that low at idle... Car is a street/strip car...

I run 5W30 Gulf MAX Supreme oil.
Run a Milodon external oil system, Melling HV pump.

-Am I beeing paranoid about the oil pressure at idle? If not -How can I get a little more oil pressure at idle?

Thanks

/Tom

Posted By: 67Satty

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 06:31 PM

Their webpage says:

"Oil restrictors may be necessary to maintain oil pressure."

http://www.harlandsharp.com/bb_mopar.htm

Posted By: Clanton

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 06:32 PM

You can put a Mig welding tip in the rocker stand to help with oil psi.drill the tip to .060 to .100 and cut it to 1/2" and slip it in the rear rocker stand before you put the stud or bolt in and it holds the mig tip in.Done.

Posted By: TomsCharger70

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 06:41 PM

Quote:

Their webpage says:"Oil restrictors may be necessary to maintain oil pressure."
http://www.harlandsharp.com/bb_mopar.htm

-Yes, Thank You, I also read this. Problem is they dont tell how, what kind, where, etc.. to put the restrictors...

Quote:

You can put a Mig welding tip in the rocker stand to help with oil psi.drill the tip to .060 to .100 and cut it to 1/2" and slip it in the rear rocker stand before you put the stud or bolt in and it holds the mig tip in.Done.

Thanks, this is the kind of info Im looking for?

Any one else have a solution, please post it, if you have pics, post them to...

/Tom

Posted By: JohnRR

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 06:54 PM

Quote:

Quote:

Their webpage says:"Oil restrictors may be necessary to maintain oil pressure."
http://www.harlandsharp.com/bb_mopar.htm

-Yes, Thank You, I also read this. Problem is they dont tell how, what kind, where, etc.. to put the restrictors...

Quote:

You can put a Mig welding tip in the rocker stand to help with oil psi.drill the tip to .060 to .100 and cut it to 1/2" and slip it in the rear rocker stand before you put the stud or bolt in and it holds the mig tip in.Done.

Thanks, this is the kind of info Im looking for?

Any one else have a solution, please post it, if you have pics, post them to...

/Tom

That would be the easiest solution , you need to put something in there to restrict the flow ... but this isn't a stock iron head , Indy's oil differently ...

Nevermind ...

Posted By: TomsCharger70

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 06:55 PM

Looked at the Indy Cylinder Head page.. Found a Head oil restrictor kit # 440-R4-10R.

Any one use this kit? How does it work and how/where do you instal the restrictors? Who sells it?

Also the Indy EZ 295 Heads I have, have the external oil lines, could one put a restrictor in the oil lines going into the heads?

Thanks
/Tom

Posted By: 68roadrunner

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 07:27 PM

with my -1 heads and h&s rockers i installed 10-32 brass allen plugs in the fittings going into the heads and drilled to suit myself

Posted By: Cab_Burge

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 08:05 PM

I drill and tap(6x32) the NPT end of the fitting that goes into the heads(both sides

) and screw a 6x32 brass set screw and drill it to .039

Works good and last along time

Posted By: B G Racing

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 08:28 PM

With the Indy-1 and SR head external oil kit if used you can tap the inside of the brass fittings for Holly jets and use .052 to .075 jet sizes to restrict the oil.HS and other rockers that use the needle rollers on the shafts tend to bleed more oil.

Posted By: CompWedgeEngines

Re: Harland Sharp rockers and now low oilpressure... - 10/19/14 11:14 PM

Quote:

With the Indy-1 and SR head external oil kit if used you can tap the inside of the brass fittings for Holly jets and use .052 to .075 jet sizes to restrict the oil.HS and other rockers that use the needle rollers on the shafts tend to bleed more oil.

In my opinion, this is the best, easiest and simplest solution. Been doing it like this for a long time, always works, and is easy to adjust to your liking....

Posted By: TomsCharger70

Re: Harland Sharp rockers and now low oilpressure... - 10/20/14 12:33 AM

Quote:

With the Indy-1 and SR head external oil kit if used you can tap the inside of the brass fittings for Holly jets and use .052 to .075 jet sizes to restrict the oil.HS and other rockers that use the needle rollers on the shafts tend to bleed more oil.

Does any one have a pic on how to do this mod? Sounds simple but im kinda a

so one or two pics would help alot!

Thanks

/Tom

Posted By: DAYTONA540

Re: Harland Sharp rockers and now low oilpressure... - 10/20/14 01:03 AM

This is the only picture I have. I use to make and sell these kits but not any longer. Hope this helps.

Posted By: PLUM BAD

Re: Harland Sharp rockers and now low oilpressure... - 10/20/14 06:15 AM

Here are pic. of what I did using brass set screws.

Posted By: GTX MATT

Re: Harland Sharp rockers and now low oilpressure... - 10/20/14 06:19 AM

Out of curiosity what was the net change in oil pressure?

Posted By: TomsCharger70

Re: Harland Sharp rockers and now low oilpressure... - 10/20/14 10:19 AM

Thank You for the pics!!!

GTX Matt* The oil pressure went down from about 20 psi at idle to 5 psi after the rocker change (engine at running temp). Engine idle is set at 1000rpm.

/Tom

Posted By: Cab_Burge

Re: Harland Sharp rockers and now low oilpressure... - 10/20/14 06:33 PM

Quote:

Here are pic. of what I did using brass set screws.

I do mine basically the same as his are

I use a #6 brass set screw and install it in the other end (NPT end) of the fittings in the heads so in case it backs out it will be captured in the heads and not on the block sides

The ones I buy and use have a small allen head end so I use a .039 drill to open them up all the way through to that size

Posted By: TomsCharger70

Re: Harland Sharp rockers and now low oilpressure... - 10/20/14 10:56 PM

Quote:

With the Indy-1 and SR head external oil kit if used you can tap the inside of the brass fittings for Holly jets and use .052 to .075 jet sizes to restrict the oil.HS and other rockers that use the needle rollers on the shafts tend to bleed more oil.

This seems the most simple way. If I start to mess with the small brass screws Ill probably just end up

and

At idle wouldnt some 10-15 Psi of oil pressure be more than enough???

Thanks again!!!

/Tom

Posted By: Cab_Burge

Re: Harland Sharp rockers and now low oilpressure... - 10/21/14 02:34 AM

It depends on the idle speed for the prssure, 10 lbs per 1000 RPM works great for me with 5W20 wt oil when it is hot, above 150 F

My pump gas 518 C.I. Duster motor idled at 18 to 20 lbs with that oil at or above 160 F oil temps at 850 RPM in gear

That was with the Eddy RPM heads, I set the idle RPM higher(1000 to 1100 RPM in gear hot) when I put the Indy heads on it with the external oiling with the .039 restrictors

It would have between 25 to 35 Lbs at 1100 RPM or higher, 50 lbs by 2000 RPM with that hot oil

Posted By: dare_dude

Re: Harland Sharp rockers and now low oilpressure... - 04/27/16 10:41 PM

Thanks!

Posted By: DoubleD

Re: Harland Sharp rockers and now low oilpressure... - 04/27/16 10:49 PM

You need the restricter kit in the oil feed lines - if you run it unrestricted - all your oil will be up in the heads and you risk sucking the pan dry - we use the .060 restricter kitfrom INDY - but like BGR said you can make your own just as easy.

Posted By: markz528

Re: Harland Sharp rockers and now low oilpressure... - 04/28/16 03:40 AM

What side clearance are you setting the rockers at? Too much clearance will also drop oil pressure. I shoot for 0.015 inches and make sure a 0.020 inch shim don't fit. I use a u shaped SS shim.

Posted By: sc4400

Re: Harland Sharp rockers and now low oilpressure... - 04/28/16 08:35 PM

I run a .065 restrictor in the tee before going to each head. Tried a .075 and immediately flooded the heads and pushed raw oil out the breathers. I run 400 seat pressure, 1.6 HS rockers .810 lift with NO problems for years.

RIP

Posted By: Stanton

Re: Harland Sharp rockers and now low oilpressure... - 04/28/16 11:03 PM

I run a .060 restrictor through the standard block oil holes but they have been drilled and fed from the galleys for full-time oiling. The top end gets loads of oil and I get 25 lbs of pressure priming with a cordless drill. I have yet to fire the motor but I think I could have afforded to go with a smaller retrictor. This is with a standard volume pump too.

Posted By: TomsCharger70

Re: Harland Sharp rockers and now low oilpressure... - 04/29/16 12:11 AM

I used Holley carb jets (#48) to restrict the oil flow to the top end. Run 5W-30 oil. Engine oil pressure is 16-17 Psi at idle and about 70 Psi at WOT. (The jets have a 1/4-32 UNF thread)

/Tom

Posted By: Miszny

Re: Harland Sharp rockers and now low oilpressure... - 07/20/20 02:28 PM

Thanks for this helpful thread, I did the same thing using jets...
Wanted to bring pressure from 20 in gear to 35 with 20w50 oil. Turned out that 69 jet was perfect fit.

Attached picture 69jet.jpg