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Hey guys ive got a pretty worked 308 with a high energy sump, i was wandering what psi the oil should run at at idle and during driving, also i was told the high energy sumps for the WB they are ment to hold 6.5 litres but with only 6 litres in the sump the oil is well over the full mark on the dipstick any ideas?
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I know they often run very low psi at idle, I had a HZ 308 that the oil light flashed on and off in summer and a WB Statesman that ran near the bottom of the gauge at idle, both were very good low milage motors. Both were running Penrite HPR30.
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202 and three on the tree, can't get more Aussie than that!! |
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Hi BAD-WB
My HQ manual says:
@ 500 rpm - 7 psi minimum
@ 2000 rpm - 40 - 60 psi
The dash light comes on between 3 - 5 psi
hope this helps,
John
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My 308 Doesnt go below 40 psi and jumps to 60 when I accelerate, up to 80 if I really put my foot down.
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My 308 Doesn't go below 40 psi and jumps to 60 when I accelerate, up to 80 if I really put my foot down.
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10 PSI for every 1000 rpm.
Hence, you really on need HV when you run over 6500 rpm.
A1 Bogan. |
Old holdens brought on the spot, quick decision, cash paid. |
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Cheers guys. at the moment its sitting on about 30psi at idle and goes up to about 60 when the foot goes down. what sort of problem might occur if the pressure gets too high.
Cheers.
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Too high pressure?.
SHorten life of bearings + Significant HP loss involved in driving oil pump.
A1 Bogan. |
Old holdens brought on the spot, quick decision, cash paid. |
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So what causes the oil pressure being too high and how do you fix it?
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tight bearing clearances, HV oil pumps when not required for application, and grade of oil, and oil temperature..
Too High oil press not usually a problem, more a consideration for the engine blueprinter.
A1 Bogan. |
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quote:
Originally posted by Scott
So what causes the oil pressure being too high and how do you fix it?
If at first you don't succeed, just call it Version 1.0 |
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The clearances do have and effect on oil pressure.
"Loose is Fast" is a common phrase in drag racing circles.
A1 Bogan. |
Old holdens brought on the spot, quick decision, cash paid. |
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quote:
Originally posted by adam PERTH
The clearances do have and effect on oil pressure.
"Loose is Fast" is a common phras |
If at first you don't succeed, just call it Version 1.0 |
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Dr Terry, how do you release a stuck relief valve or reduce the tension? Also how do you check if it really is a stuck relief valve causing the high oil pressure?
Cheers
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You will have to take it out and measure the overall length of the valve,
and then measure its total length under 5lb pressure, or whatever the nominated length given for the engine specification.
A1 Bogan. |
Old holdens brought on the spot, quick decision, cash paid. |
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. . . . . and before you go that far, check that your gauge is accurate.
"Always start with the easy things" my dad always says.
RigPig
59-Cadillac CoupeDeville, 49-Triumph SpeedTwin, 74-HQ GTS4 Monaro
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