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Oil pressure problem with a 318
#292936
04/19/09 03:13 PM
04/19/09 03:13 PM
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Joined: Jan 2003
Posts: 2,511 Tampa , Fl
MoparJoe
OP
super gas
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OP
super gas
Joined: Jan 2003
Posts: 2,511
Tampa , Fl
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I have an oil pressure problem with the 318 I just built, it has 15-20 psi max at 2000 rpm and falls near 0 at idle, it also has very little oil flowing to the rockers and the lifters won't pump up so it's not the gauge. The strange part is I can drive the pump with a drill at 1300rpm and get 50psi with plenty of oil to the rockers.
The oil pump is a M72 Melling, all the galley plugs are in place, it has clevite 77 bearings, full groove on the mains, standard rods, clearance it .0016" on the mains, .001" on the rods.
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Re: Oil pressure problem with a 318
[Re: MoparJoe]
#292937
04/19/09 03:40 PM
04/19/09 03:40 PM
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Joined: Dec 2004
Posts: 1,061 New Mexico
dmerc
super stock
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super stock
Joined: Dec 2004
Posts: 1,061
New Mexico
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I don't think your pump spins that fast. There is a small press in oil galley plug near the oil pump that sometimes gets left out. Hopefully someone can remember where that plug is.
Last edited by dmerc; 04/19/09 03:41 PM.
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Re: Oil pressure problem with a 318
[Re: dmerc]
#292938
04/19/09 04:17 PM
04/19/09 04:17 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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1300rpm on the drill(correct?) has 50 psi which is the same as 2600 eng rpm(give or take a bit depending if the cam gear/intermediate shaft in the valley area have the same # of teeth) but they're close enough in teeth count but at 2000 eng running rpm(only 600 rpm lower)it's 30-35psi lower. got too much clearance somewhere.
Last edited by RapidRobert; 04/19/09 04:22 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Oil pressure problem with a 318
[Re: RapidRobert]
#292939
04/19/09 04:22 PM
04/19/09 04:22 PM
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Joined: Apr 2007
Posts: 2,327 Glendale, AZ
69L78Nova
Banned. Forever.
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Banned. Forever.
Joined: Apr 2007
Posts: 2,327
Glendale, AZ
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Is the plug in place next to the intermediate shaft?
1969 Nova 454/M21/3.31 Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD 5.0/4R70W/3.55 (Daily driver)
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