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#11
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My 1969 corvette 427/390 is around 35-40 when warmed up. It’s has 3:08 gears. Rob
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1969 Camaro SS 396 X66 Lemans Blue 1969 Corvette 427/390 Lemans Blue |
#12
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If it is an electric gauge, make sure the lead is not grounding out somewhere ... I think if the lead is grounded ... the gauge will indicate max pressure. If I am wrong -- someone chime in ... TAZ
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You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know! |
#13
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The gauge is a mechanical unit.
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#14
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gauge
Sent you a PM regarding the rebuilding / clean-up of the pivot points.
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#15
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Finally got around to removing the oil pressure gauge; can anyone here help guide me through the steps needed to get it working properly again? Nothing about the gauge seems broken, I can move the needle very easily and it doesn't seem to stick at all.
Of course that makes me think it's something more serious...............ugh. Last edited by Dave Rifkin; 01-13-2019 at 07:33 PM. Reason: added details |
#16
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Oil pressure pegged
Try looking at the oil filter bypass valve above the oil filter, maybe the bypass valve is clogged or stuck shut thereby raising the oil pressure, just a thought, without pulling the engine. Don.
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#17
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The bypass is only supposed to open when the oil filter is clogged.
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Freddie 1969 Camaro RS/SS396 (427) 4 speed |
#18
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'
Have you tested actual pressure w/ a remote gauge yet also how long has the engine been operating normally - any recent rebuild etc? Info supplied so far sounds like it may be the pressure relief valve in the pump as Bill mentioned at the beginning? So, best test before going in other directions and good luck w/ everything! ~ Pete .
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I like real cars best...especially the REAL real ones! Last edited by PeteLeathersac; 01-22-2019 at 02:57 PM. |
#19
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Oil pressure pegged
The oil pressure bypass valve also opens when the engine oil is cold so that the oil filter will not expand. Racers have been plugging off this bypass valve opening for years but are cautious about revving the engine when cold to prevent oil filter damage. When the engine is totally warmed up is the oil pressure still pegged? If so I'd check the oil pump pressure spring, cup and relief valve in the oil pump. If pressure goes up there is a restriction somewhere. Doesn't cost anything to check it out. Just my 2 cents worth. Don.
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#20
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Quote:
Back to the OP. There are only 3 causes of pegged oil pressure I am aware of 1) defective gauge- get another gauge and test to rule out gauge 2) stuck pressure relief valve in oil pump- remove pump repair or replace ( 2nd option preferable) 3) oil galleys plugged with foreign matter-tear down engine.
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69 SS/RS 396 M20 X22 Nor 12B,72B,712 bought 1979 FULL OWNER HISTORY 69 Dick Harrell tribute Day II 427 M20 4.10 X11 76 orig pnt, 711 67 Super Stock 302 Camaro re-creation |
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