Pyro Posted August 10, 2006 Share Posted August 10, 2006 I can't believe a turbo pump didn't increase oil pressure at idle. Are you sure it is a turbo pump? My low pressure idle issues were solved/improved by a turbo pump. The turbo pump has longer rotors than the non-turbo pump. I forgot the exact amount but it is around 1/4 inch (6mm) longer. Maybe you should measure the new pump rotors versus the old pump rotors. I run 15w-40 diesel engine oil in my Z. The next time you get an engine rebuilt, tell the machine shop to install each bearing then mic the bearings and then turn the crank to get exactly 0.0020" clearance on all the main and rod journals. Cost a little more but worth it. Quote Link to comment Share on other sites More sharing options...
trwebb26 Posted August 10, 2006 Author Share Posted August 10, 2006 It may have increased it - but that just means that with the old pump - I was running WAY less than 7psi. Maybe 3 psi? - and the new pump bumped it up to 6 or something? Quote Link to comment Share on other sites More sharing options...
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