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80 psi on stand with a drill!! #743118
07/07/10 09:35 PM
07/07/10 09:35 PM
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Moparnut426 Offline OP
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I got around to checking my oil psi, and making sure all rockers got god oil too them. I have a snap on drill, and on high its got 80 psi cold. On low its got 73 psi cold with Brad Penn 20w50.

My buddy thinks its too much. I have solid roller, and harland sharps. Stroker so RPM isnt gonna be over 7200. At least I dont think Ill ever need to go there.

Whats your thoughts?

KAsey

Re: 80 psi on stand with a drill!! [Re: Moparnut426] #743119
07/07/10 09:42 PM
07/07/10 09:42 PM
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Race only ? ... that is way toooo much.

I remember an oil article written by Mr Personality that stated that he ran NO MORE than 50 psi.

Re: 80 psi on stand with a drill!! [Re: dOoC] #743120
07/07/10 09:47 PM
07/07/10 09:47 PM
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thats without the motor spinning and probably will not be an accurate reading while the engine is running.

Re: 80 psi on stand with a drill!! [Re: Moparnut426] #743121
07/07/10 09:56 PM
07/07/10 09:56 PM
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I was priming my W-2 today and with a 1/2 air drill
I was getting 40 psi(this air drill doesnt turn real
fast but has torque) and when I would turn the crank
over and the cam lined up for the rocker oiling it would
drop to 30 psi... last time I ran this engine(as is)
it had 70+ psi at rev
I think your going to have a problem with way to much
pressure.... JMO

Post deleted by Defbob [Re: Moparnut426] #743122
07/07/10 10:02 PM
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Re: 80 psi on stand with a drill!! #743123
07/07/10 10:11 PM
07/07/10 10:11 PM
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Moparnut426 Offline OP
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I guess Im not too worried about it, Its not all out race, but its gonna get raced a few times. I can run a 10w30 or 10w40 oil too. This is with a pretty fast high torque 1/2" snap on drill. Its got nuts for sure. I can pull the pan and "adjust" it, but man I really dont want to break this seal, Its sealed up REALLY nice.

Kasey

Re: 80 psi on stand with a drill!! [Re: DJVCuda] #743124
07/07/10 10:13 PM
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Moparnut426 Offline OP
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Quote:

thats without the motor spinning and probably will not be an accurate reading while the engine is running.




And that is with the engine spinning by hand with a long 1/2 " ratchet. I did pause at the rocker oiling hole, and made sure al rockers has good oil, and it was a little less there. Its a precision blueprinted pump, and I didnt mess with it, its how they sent it too me.

Kasey

Re: 80 psi on stand with a drill!! [Re: DJVCuda] #743125
07/07/10 10:29 PM
07/07/10 10:29 PM
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Quote:

thats without the motor spinning and probably will not be an accurate reading while the engine is running.


That's not a very accurate test of oil pressure. Gotta get it up to temp and get some time on it before the oil pressure lines out. You will almost always see a 10+ psi drop from a brand spankin new just fired motor to one with a 1000 miles or so on it. I sure woulbn't worry about it at this point in time.


Fastest 300
Re: 80 psi on stand with a drill!! [Re: Moparnut426] #743126
07/07/10 10:31 PM
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i think you'll be just fine. the precision pumps are set for 80 psi.

Re: 80 psi on stand with a drill!! #743127
07/07/10 10:34 PM
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Moparnut426 Offline OP
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Im happy that I had good oil flow at the rocker arms. it was flowing nicely out of the push rod oil hole, and I could see the lifters through the distributor hole, and they were oiling really good. Im getting really excited now. Im thinking of calling ARP and ordering some 3/8 studs for the rocker arms. They make me feel better running them.

Re: 80 psi on stand with a drill!! #743128
07/07/10 10:37 PM
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Quote:

i think you'll be just fine. the precision pumps are set for 80 psi.





And if you are worried.. Use a K&N or System 1 filter..


Chris...

Re: 80 psi on stand with a drill!! [Re: Moparnut426] #743129
07/07/10 10:39 PM
07/07/10 10:39 PM
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Akron, Ohio
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My Craftsman drill always hits a high number, you'll be fine.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: 80 psi on stand with a drill!! [Re: ProSport] #743130
07/07/10 11:17 PM
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I might have an oil filter/header tube clearance issue, so i have to run a a/c delco short filter. I had to make 3/8 adapters for my heads and that pushed me headers out a bit and I dont know if a K&N filter will fit. Ill buy one and check. I know the Napa GOld filters have a thick case also.

Kasey

Re: 80 psi on stand with a drill!! [Re: Moparnut426] #743131
07/07/10 11:24 PM
07/07/10 11:24 PM
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I just preoiled the 501 and I got 70 without too much trouble (rpm) and 10W30 oil. But I too feel that this is not much of an indicator of the pressure in the actual running engine with hot oil. Of course if I had to "go like hell" and only Got 30 PSI I would be worried.


SRT DEMON ONE SEAT
Re: 80 psi on stand with a drill!! [Re: Ron Silva] #743132
07/07/10 11:44 PM
07/07/10 11:44 PM
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Moparnut426 Offline OP
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Quote:

I just preoiled the 501 and I got 70 without too much trouble (rpm) and 10W30 oil. But I too feel that this is not much of an indicator of the pressure in the actual running engine with hot oil. Of course if I had to "go like hell" and only Got 30 PSI I would be worried.




Its funny, When a person who hasnt followed your build read this, he would swear your 501 is a big block...

Re: 80 psi on stand with a drill!! [Re: Moparnut426] #743133
07/08/10 01:35 AM
07/08/10 01:35 AM
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i thought 80 was the norm with the cordless drill doing a pre-oil & as hemifred says, i can get almost 60 with the speed drive by hand. when the oils hot & the engines running its a lot lower.

Re: 80 psi on stand with a drill!! [Re: Moparnut426] #743134
07/08/10 01:44 AM
07/08/10 01:44 AM
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Quote:

I might have an oil filter/header tube clearance issue, so i have to run a a/c delco short filter. I had to make 3/8 adapters for my heads and that pushed me headers out a bit and I dont know if a K&N filter will fit. Ill buy one and check. I know the Napa GOld filters have a thick case also.

Kasey


what is the part # of the short filter???


"Tappet" lead fabricator for the legendary "Flat & Tappet" race team .
Post deleted by Defbob [Re: Moparnut426] #743135
07/08/10 02:18 AM
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Re: 80 psi on stand with a drill!! #743136
07/08/10 07:23 AM
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80 PSI is normal for priming as all moving parts in the engine are static and no loss of pressure will be caused by dumping by the moving parts.With 80psi cold you usually see 40/50psi at hot idle and 70/80 psi at higher rpms hot if that is the pumps max setting.With most pumps we see max pump pressure cold at higher rpms around 90/100 and settle down when warmed up to 70/80 psi.

Re: 80 psi on stand with a drill!! [Re: B G Racing] #743137
07/08/10 11:13 AM
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Since the cam turns half of what the crank does wouldn't the drill be turning the oil pump faster that the engine at idle?

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