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Re: Oil pressure issues STILL !!!!! Help needed
[Re: sc301v]
#661441
04/07/10 06:45 AM
04/07/10 06:45 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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i've used those exact lifters in unbushed blocks a number of times and have never experienced the type of problem you describe. basically you have a bunch of "controlled" leaks, (i.e. oil to the roller and pushrod oiling.)it's not likely your uncovering the oil gallery, but did you check when installing the lifters? what was your measured lifter to bore clearance during installation? without that information, one could only guess at where the problem may be IMO. is it time for a better pump? the dual line is great, but is the pump itself capable of supplying the volume you need? the dual line is on the INPUT side of the pump, not the OUTPUT. my guess is that in order to actually fix the problem, you'll have to start investigating all area's of the oiling system and critical dimensons and clearances.
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Re: Oil pressure issues STILL !!!!! Help needed
[Re: sc301v]
#661444
04/07/10 01:07 PM
04/07/10 01:07 PM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,303
Bend,OR USA
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Verify the gauge, check it agianst another known accurate gauge BTW what is your idle speed?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Oil pressure issues STILL !!!!! Help needed
[Re: sc301v]
#661446
04/08/10 12:25 AM
04/08/10 12:25 AM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,303
Bend,OR USA
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Is this a aluminum block?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Oil pressure issues STILL !!!!! Help needed
[Re: Cab_Burge]
#661447
04/08/10 08:29 AM
04/08/10 08:29 AM
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Joined: Feb 2008
Posts: 364 Kentucky
sc301v
OP
enthusiast
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OP
enthusiast
Joined: Feb 2008
Posts: 364
Kentucky
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Re: Oil pressure issues STILL !!!!! Help needed
[Re: sc301v]
#661448
04/08/10 09:59 AM
04/08/10 09:59 AM
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Joined: Sep 2003
Posts: 2,008 Sweet Home Alabama
MRMOPAR622
top fuel
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top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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Last season before a roller lifter went out and got in my oil pump. With the Indy single line pump(with 2 washers on the pressure spring) and dragster pan I had 80 lbs @ idle Hot & Cold when you revved the engine it would go up to 100 lbs.
So my question is have you took your pickup out and checked it? I had cleaned my oil pan before,but never took the pickup out. Could something be blocking some of the opening?
I hope to get my heads back in a few days. I have already made a mistake before I start back on the engine. I was sure my engine did not oil thru the lifters and push rods,but it does.
It would be nice if all of us could make a list of things to check are do before building our engines. I know I had rather spend a little more time and money now than have to go back later hunting things to fix.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
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Re: Oil pressure issues STILL !!!!! Help needed
[Re: Cab_Burge]
#661451
04/08/10 04:31 PM
04/08/10 04:31 PM
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Joined: Dec 2008
Posts: 1,200 UK
602heavy
pro stock
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pro stock
Joined: Dec 2008
Posts: 1,200
UK
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SC30 , i have the same set up as you . also had the same issues as you're having , i got there in the end as i'm sure you will , get the motor on the engine stand & figure where the excessive leak down is & i'm sure you'll fix the problem , when you prime the motor it should all come clear. As i said previously in this post , the oil pump mod netted an increase in oil pressure of around 10/15psi. Good luck.
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