HELP needed
#1898344
08/24/15 02:51 PM
08/24/15 02:51 PM
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Joined: Jan 2003
Posts: 806 Kentuckian
sixpakx
OP
super stock
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OP
super stock
Joined: Jan 2003
Posts: 806
Kentuckian
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sorry so long, not as sharp as i use to be, my son n law bought a 71 rr 383, big big can and no coverter(dies when put in gear)heads shaved with shims under rockers, so we ordered a 284 cam, bought a set of rebuit 906 heads from indy( i know).yesterday i took it apart and sure enough shimmed, pass side rocker shaft holes was at the top(upside down), and i noticed 15 0f the push rods have holes thru them like chevys, motor was very clean, got it back together and set the rpm,s @ 3500 for 15 minutes, then dropped it to 950. noticed it had 10 psi oil pressure(aftermarket mech gauge) don,t know what it was before we took it apart, racing eng it moves very little, would these open push rods cause this? and what kelp it from blowing up? i,ve only saw solid push rods in stock eng, again sorry but any help needed
Last edited by sixpakx; 08/24/15 03:11 PM.
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Re: HELP needed
[Re: sixpakx]
#1898618
08/24/15 09:26 PM
08/24/15 09:26 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Unless the lifters have oiling holes too, then it's not an issue.
If the lifters do, then possibly that is your issue. 10 Psi is on the low side, but still above spec, barely. What weight oil are you running?
I prefer to run 10w30 myself.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: HELP needed
[Re: sixpakx]
#1898780
08/25/15 12:51 AM
08/25/15 12:51 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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At 20w50 I'd expect to see more pressure at idle, unless you have some real loose bearing clearances. Sorry I can't offer more.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: HELP needed
[Re: sixpakx]
#1898957
08/25/15 11:59 AM
08/25/15 11:59 AM
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Joined: Jan 2003
Posts: 28,067 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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Start the engine again. Does the oil pressure go up with rpm?
If so, hop in and hit the road.
If not, dig into it to find the problem.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: HELP needed
[Re: sixpakx]
#1899000
08/25/15 01:06 PM
08/25/15 01:06 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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What Feets said & 15 (confirmed with a good gauge) ain't gonna cut it. not sure where the prob is but I would definitely dig in. not sure if the additional flow from the oil thru pushrods is the cause or not (I'm thinking not) but that (might) be the first thing I'd swap & check further on that situation (& check preload while you are at it but that is unrelated to the psi).
live every 24 hour block of time like it's your last day on earth
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