oil pressure concerns

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ndamico

New Member
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4
2004 110, td5. 150k miles. have recently installed madman ems3. running fairly hard up mountains yesterday. outside temp 90*F. coolant temp was 204*F, 1250*F EGT. noticed oil pressure on my madman was down around 30 psi. slowly it went further down into the 20psi range. when i went to downshift madman showed zero psi during gear change but oil pressure light on cluster didn't come on. as i went down in elevation it slowly read higher. normally car makes about 46psi cruising and about 16psi hot idle.

perhaps its my madman but i'm concerned it may be something else. i don't know the history of the engine. been reading that the pumps can crack. i'm using helix ultra 5w-40 synthetic. any suggestions?
 

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Here are the normal values:
Pressure at idle (Cold) 3.0 bar (43.5 lbf.in2)
Pressure at 3500 rev/min (Hot) 1.5-3.0 bar (21.75-43.5 lbf.in2)
Relief valve opening pressure 4.0 bar (58 lbf.in2)
Low oil pressure switch opening pressure 0.2-0.6 bar (3.0-8.8 lbf.in2)
 
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