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RE: Excessive Oil Pressure
By John - 11/02/2001 8:10:05 AM; IP 142.177.103.220
Yes, I've had exactly the same problem with my ERA Cobra and a 428. The problem is as Mr. Shoe mentions. You most likely have a High Pressure pump which drives the pressure up (mine was up to 145psi at cold idle, 25 psi hot)and the oil fills the heads too fast (despite restrictors) flooding the valve guides and causing the blue smoke.

Here's what to do (I think...chuckle):

1/ Change to a Melling HV only pump...gives you between 70 and 80 psi at a cold idle or at revs, hot or cold(a stock cast iron pump is OK for solid lifters...I use the M57A , 5/16 end at the pump vs 1/4 with an aftermarket shaft for reliability...also, if you are using a Mallory ditributor, you will eventually break the split-pin holding the gear to the shaft, even with the HV only pump....Mallory admits this happens...I have a fix...e-mail me, or post a response, if you want info on how to rectify this without buying a new distributor);

2/ Make sure the oil drain pans are installed under the rocker shaft supports;

3/ make certain there are oil passage restrictors in the heads;

4/ make sure your oil pan is of sufficient quantity that you don't suck up an air bubble when the heads are full of oil (did you notice fluctuations in the oil pressure gauge when the engine is first started?... especially when you try to move the car when cold...that's air bubbles!) I recently bit the bullit and purchased an AVIAD oil pan...10 qt...original equipment on most 427 Cobras they claim. It does have a lot of baffles and such to help keep the oil to the pick-up under hard cornering and super-quick acceleration such as your car is capable of.

All of these mods can be done without removal of the engine from the car. Good Luck.
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Collapse <a href=../ForumFE/reply.aspx?ID=9008&Reply=9008><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9008" onclick="return false;">Excessive Oil Pressure</a>&nbsp;-- <font color=#0000ff>Gary G, <i>10/30/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9008', contentMargin: 60, icon: $('anchor9008') }); </script>  Excessive Oil Pressure -- Gary G, 10/30/2001
 RE: Excessive Oil Pressure -- richard, 10/31/2001
 RE: Excessive Oil Pressure ? -- Mel Clark, 11/01/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9014&Reply=9008><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9014" onclick="return false;">What kind of oil pump are you using?</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>11/01/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9014', contentMargin: 60, icon: $('anchor9014') }); </script>  What kind of oil pump are you using? -- Dave Shoe, 11/01/2001
 RE: What kind of oil pump are you using? -- GaryG, 11/12/2001
 RE: That eats horsepower too! -- kevin, 11/02/2001
RE: Excessive Oil Pressure -- John, 11/02/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9035&Reply=9008><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9035" onclick="return false;">RE: Excessive & Lack of Interest</a>&nbsp;-- <font color=#0000ff>Mel Clark, <i>11/02/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9035', contentMargin: 60, icon: $('anchor9035') }); </script>  RE: Excessive & Lack of Interest -- Mel Clark, 11/02/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9045&Reply=9008><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9045" onclick="return false;">RE: Excessive & Lack of Interest</a>&nbsp;-- <font color=#0000ff>John, <i>11/02/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9045', contentMargin: 60, icon: $('anchor9045') }); </script>  RE: Excessive & Lack of Interest -- John, 11/02/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9048&Reply=9008><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9048" onclick="return false;">RE: Excessive & Lack of Interest</a>&nbsp;-- <font color=#0000ff>Mel Clark, <i>11/02/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9048', contentMargin: 60, icon: $('anchor9048') }); </script>  RE: Excessive & Lack of Interest -- Mel Clark, 11/02/2001
 RE: Excessive pressure and relief valves -- RJP, 11/03/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9088&Reply=9008><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9088" onclick="return false;">RE: Excessive & Lack of Interest</a>&nbsp;-- <font color=#0000ff>Bill, <i>11/04/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9088', contentMargin: 60, icon: $('anchor9088') }); </script>  RE: Excessive & Lack of Interest -- Bill, 11/04/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9091&Reply=9008><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9091" onclick="return false;">RE: Excessive & Lack of Interest</a>&nbsp;-- <font color=#0000ff>Mel Clark, <i>11/04/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9091', contentMargin: 60, icon: $('anchor9091') }); </script>  RE: Excessive & Lack of Interest -- Mel Clark, 11/04/2001
 RE: Excessive & Lack of Interest -- John, 11/04/2001
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