Roller Lifter "oil hole" Q

drudis · 03-02-2002, 11:37 AM

On a 5.0L engine, the roller lifter has a bleeder hole (to feel oild to the lifter)...

What side up? Should that hold point UP towards the valley, or down towards the pistons?

PLEASE HURRY, I am in the middle of it right now!!!

Mach 1 · 03-02-2002, 12:04 PM

It doesnt matter. I have had my lifters out and in several times and never gave that hole the time of day, and never had a problem.

Mach 1 · 03-02-2002, 07:36 PM

So, what way did you put it? My car is also apart and I was wondering if you found anything more out about the hole and if it matters?

srv1 · 03-02-2002, 09:24 PM

Darius, i always put the hole facing towards the exhaust. i figure that the oil is going to stay on that side of the lifter bore a little more. but never put them the other way.

Mach 1 · 03-02-2002, 10:13 PM

I put mine together tonight, and decided to put the hole on top for 2 reasons-

1. My Ford factory maintenance manual doesnt specify which direction, or even mention the holes, but in a picture in the book, it appears as if the holes are on the top side.

2. If the oil is coming out the top side of the bore, it will work its way down around the sides to the bottom, lubricating the entire bore. If it is on the bottom, the oil will just run out the bottom.

DRASTiK · 03-02-2002, 10:42 PM

Hey gents,
I put mine together two weeks ago, and at that time, I was pondering this too. I saw a post a while back that said it doesn't matter which way they go. I put them facing the lifter valley, and have no problems at all. However I know in the past I haven't thought about it so I probably mismatched them. I didn't have any problems then either.

drudis · 03-02-2002, 10:59 PM

Come monday, I'll make some calls to Comp Cams and TFS and FRPP...
For me its too late, motor is buttoned-up, and they went in pointing up towards the lifter valley. Seeing that the hole is fed from pressurised passages, I dont think it matters.

89 ATI · 03-03-2002, 09:24 AM

I looked at mine when I tore the motor apart. They were pointing toward the lifter valley from the factory. I figured if thats the way ford built it I would put it back together that way.

Five0 · 03-03-2002, 09:49 AM

Hey drudis, I did mine the same way for the same reason.

I was also told it did not matter though.

MiracleMax · 03-04-2002, 10:31 PM

I beleive that is edge orfice metering? so the area just below the orfice fills with pressurized oil and feeds the lifter. So the space between the machined surfaces becomes the oil cavity in the lifter bore. Shouldn't matter which way they go in.

mrbadong · 03-05-2002, 06:58 PM

it doesnt matter... the oil will make its way through the entire surface.

PKRWUD · 03-05-2002, 11:02 PM

Quote:

Originally posted by MiracleMax
I beleive that is edge orfice metering? so the area just below the orfice fills with pressurized oil and feeds the lifter. So the space between the machined surfaces becomes the oil cavity in the lifter bore. Shouldn't matter which way they go in.

This is correct. The "chamber" that is created by the groove in the lifter becomes pressurized as soon as the oil pressure comes up, so it really doesn't matter. That being said, I always install them with the hole pointing towards the lifter valley.

Take care,
-Chris

03-02-2002, 11:37 AM	#1
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	Roller Lifter "oil hole" Q On a 5.0L engine, the roller lifter has a bleeder hole (to feel oild to the lifter)... What side up? Should that hold point UP towards the valley, or down towards the pistons? PLEASE HURRY, I am in the middle of it right now!!! __________________ Darius Rudis, Moderator Corner Carvers Delight 1989 Mustang LX - Open Track Car http://www.dariusrudis.com

03-02-2002, 12:04 PM	#2
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	It doesnt matter. I have had my lifters out and in several times and never gave that hole the time of day, and never had a problem. __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

03-02-2002, 07:36 PM	#3
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	So, what way did you put it? My car is also apart and I was wondering if you found anything more out about the hole and if it matters? __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

03-02-2002, 09:24 PM	#4
srv1 Get down..... Join Date: Apr 2001 Location: Room 103 Posts: 2,095	Darius, i always put the hole facing towards the exhaust. i figure that the oil is going to stay on that side of the lifter bore a little more. but never put them the other way. __________________ Cobra brakes are on! Finally..... ------------------------------------------------

03-02-2002, 10:13 PM	#5
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	I put mine together tonight, and decided to put the hole on top for 2 reasons- 1. My Ford factory maintenance manual doesnt specify which direction, or even mention the holes, but in a picture in the book, it appears as if the holes are on the top side. 2. If the oil is coming out the top side of the bore, it will work its way down around the sides to the bottom, lubricating the entire bore. If it is on the bottom, the oil will just run out the bottom. __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

03-02-2002, 10:42 PM	#6
DRASTiK Registered Member Join Date: May 2001 Location: Yuma, AZ Posts: 536	Hey gents, I put mine together two weeks ago, and at that time, I was pondering this too. I saw a post a while back that said it doesn't matter which way they go. I put them facing the lifter valley, and have no problems at all. However I know in the past I haven't thought about it so I probably mismatched them. I didn't have any problems then either. __________________ Dave 88 GT - 13.4@106 on street tires (2.2 60ft) My Stang RHC member #75 My stang is FOR SALE!!

03-02-2002, 10:59 PM	#7
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	Come monday, I'll make some calls to Comp Cams and TFS and FRPP... For me its too late, motor is buttoned-up, and they went in pointing up towards the lifter valley. Seeing that the hole is fed from pressurised passages, I dont think it matters. __________________ Darius Rudis, Moderator Corner Carvers Delight 1989 Mustang LX - Open Track Car http://www.dariusrudis.com

03-03-2002, 09:24 AM	#8
89 ATI Registered Member Join Date: Sep 2000 Location: Lafayette, Indiana Posts: 120	I looked at mine when I tore the motor apart. They were pointing toward the lifter valley from the factory. I figured if thats the way ford built it I would put it back together that way.

03-03-2002, 09:49 AM	#9
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	Hey drudis, I did mine the same way for the same reason. I was also told it did not matter though. __________________ James Cox RHC Member #44 nochevy@hotmail.com 1991 Mustang LX Dart iron eagle block, 4340 28oz 347 crank, 4340 h-beam rods, probe ultra light pistons canfield heads “race ported by Brent Frazier”, solid roller cam and lifters “custom grind”, kooks 1 7/8" race headers, and much more. Engine built by Brent Frazier.

03-04-2002, 10:31 PM	#10
MiracleMax Registered Member Join Date: Apr 1999 Location: Hayes, Va, USA Posts: 798	I beleive that is edge orfice metering? so the area just below the orfice fills with pressurized oil and feeds the lifter. So the space between the machined surfaces becomes the oil cavity in the lifter bore. Shouldn't matter which way they go in. __________________ 2002 5M GT (99% stock) 1991 5M LX (30% stock) patiently awaiting my satin silver 07 Mach 1, and don't forget the shaker

03-05-2002, 06:58 PM	#11
mrbadong Registered Member Join Date: Mar 2002 Location: Bay Area, Ca Posts: 8	it doesnt matter... the oil will make its way through the entire surface. __________________ 1989 Red Mustang 5.0 LX Hatchback ENGINE AND DRIVETRAIN: Explorer Upper and Lower Intake, C & L 76mm Mass Air Meter, Aeromotive AFPR, 24lb Injectors, 155lph Fuel Pump, FRPP 65mm Throttle Body, Edelbrock 6037's, Crane Hardened Stock Length Pushrods, FRPP 1.6 Rockers, E303 Cam, FRPP Timing Chain, GDI 3-Row Radiator, BBK Shorty Headers, Pacesetter Off Road H-Pipe, Borla Pro-XS Stainless Mufflers, FRPP 3.55 Gears, KYB GR-2 Shocks and Struts, FRPP C Springs, 180* Thermostat, AOD to T5 Swap, B and M Ripper Shifter, FRPP Cobra Clutch, Summit Racing Adjustable Clutch Cable and Quadrant, FRPP Alum. Driveshaft, Race Systems Custom Burned Chip, Maier Racing 3" Cowl Hood, 17 x 9 Cobra R's, 245-45-17 (front), 275-40-17 (rear) TRACK TIMES: 14.485 @ 96.134 MPH (WHEN I HAD AN INTAKE, GEARS, AND AOD ONLY... HAVEN'T BEEN TO THE TRACK WITH MY CURRENT MODS BUT WILL POST TIMES AS SOON AS I DO)

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