CHIPSHAPER Posted February 14, 2007 Author Share Posted February 14, 2007 Hi Guys I said I would report back. Ram supplied new pistons valves seats springs etc, and the engine was re bored and assembled. It sounds very sweet now………..But……………… the oil pressure is off the clock!! On tick over it reads 4 Bar, but as soon as you rev it the pressure goes to 10 Bar and starts to leak oil from the crank seal. Any Info would be great as now I am desperate!!!! Regards Paul Link to comment Share on other sites More sharing options...
WoodsWagon Posted February 15, 2007 Share Posted February 15, 2007 You put the bearing shells in the right way? If you put them in without lining up the oil holes, you could be getting high pressure. Link to comment Share on other sites More sharing options...
CHIPSHAPER Posted February 15, 2007 Author Share Posted February 15, 2007 Thanks for the tip and I have been assured that they were lined up. any more Ideas please! Link to comment Share on other sites More sharing options...
mikeshoup Posted February 15, 2007 Share Posted February 15, 2007 What weight of oil are you using? Link to comment Share on other sites More sharing options...
Skip Posted February 15, 2007 Share Posted February 15, 2007 Idea only. bypass valve in the oil pump is stuck. see blow up of oil pump in the FSM Link to comment Share on other sites More sharing options...
CHIPSHAPER Posted February 15, 2007 Author Share Posted February 15, 2007 20/50 oil. Bypass... OK ill look at that this weekend, thanks. Sorry........ whats FSM? Paul Link to comment Share on other sites More sharing options...
Skip Posted February 15, 2007 Share Posted February 15, 2007 Factory Service Manual This spring loaded check ball valve controls the max oil pressure. By the way these engines when worn in are known for having a flutuating oil pressure. ~0 -->5 bar is not uncommon Link to comment Share on other sites More sharing options...
subie_newbie Posted February 15, 2007 Share Posted February 15, 2007 20/50 is some serious oil, and until it gets to running temperature will generate pressures in excess of 10 bar, particularly when you add in the extra plumbing of a dry sump system. Does it remain that high after the engine has been running to operating temp? Is that even possible on the ground? ... yeah, I'm not an airplane guy. Link to comment Share on other sites More sharing options...
CHIPSHAPER Posted February 15, 2007 Author Share Posted February 15, 2007 FSM= Me Dumb! Thanks. Ref 20/50, at tick over only 4bar, and not got to operating temp yet because of pressure. Paul Link to comment Share on other sites More sharing options...
4x4_Welder Posted February 16, 2007 Share Posted February 16, 2007 If all the clearances are to spec, then try dumping the 20/50 and put in some 10/30 oil. The difference in thickness just may make a difference in oil pressure. Link to comment Share on other sites More sharing options...
CHIPSHAPER Posted February 17, 2007 Author Share Posted February 17, 2007 10/40 oil now. Pressure regulater checked. Blows the seal out??? Link to comment Share on other sites More sharing options...
Skip Posted February 17, 2007 Share Posted February 17, 2007 Chip, The dry sump sysytem is a relative unknown here. We for the most part are guessing. Could the bypass passage from the oil pump pressure regulator be blocked somehow? I would like to know what brand name the system is and who plumbed it? Maybe a description of the system, as I have a custom install that may require this. BTW I run 20w/ 50 in all my Subarus (about a dozen) but my VDC H6 I have never blown a seal.when the PVC system was functional. Sounds like you have covered that base. A Porsche board may be a better solution. Link to comment Share on other sites More sharing options...
CHIPSHAPER Posted February 17, 2007 Author Share Posted February 17, 2007 Hi Skip, Yeh its a bit of a poser for me too! Header Tank, feads oil pump. Sump feads oil cooler. Oil cooler feads header tank. New pistons, valves,springs, guides and re-bore. Blows seals!!!! Paul Link to comment Share on other sites More sharing options...
Skip Posted February 18, 2007 Share Posted February 18, 2007 Where is the "oil pump", on the engine? Sits alone? Part of the oil tank? Please PM or email me, I need more info. I do want to help. Link to comment Share on other sites More sharing options...
CHIPSHAPER Posted February 18, 2007 Author Share Posted February 18, 2007 Hi Skip thanks for the responce as you know, it gets frustrating when everything you do ends in oil everywere! I will take some photos of installation today and send to help understand. The oil pump is part of the engine. Regards Paul P.S. have hopfuly sent this to you as PM also. Link to comment Share on other sites More sharing options...
RedBrat Posted February 26, 2007 Share Posted February 26, 2007 Any progress? Link to comment Share on other sites More sharing options...
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