Awful_Charlie Posted October 18, 2014 Report Posted October 18, 2014 More accurate testing in a cooking pan on the stove in hot engine oil with a cooking digital thermometer. José Just to emphasize that Jose says engine oil - if the other half persuades you to use vegetable/cooking oil, you must really clean the resultant mess, as engine oil and vegetable oil mixed together create a rubbery mess that will block oilways! Quote
LANCECASPER Posted October 19, 2014 Report Posted October 19, 2014 Just to emphasize that Jose says engine oil - if the other half persuades you to use vegetable/cooking oil, you must really clean the resultant mess, as engine oil and vegetable oil mixed together create a rubbery mess that will block oilways! and will block arteries too Quote
Piloto Posted October 21, 2014 Report Posted October 21, 2014 Awful_Charlie The picture on your avatar is that the front or the rear? I have been trying to figure it out. José Quote
Marauder Posted October 21, 2014 Report Posted October 21, 2014 Awful_Charlie The picture on your avatar is that the front or the rear? I have been trying to figure it out. José It's whatever you want it to be José. Some guys are front bumper people others like rear bumpers. Quote
aaronk25 Posted October 21, 2014 Report Posted October 21, 2014 Are you sure it's not oil temp related? As you climb oil temp increases in cruise it probably cools a bit and in decent it drops...? Didn't see what oil your running, maybe try a straight 50w oil, (aeroshell 100)? I don't have a big bore turbo but my IO-360 has similar trends. Top of green for take off then bottom of green at altitude. All low oil pressure means is the pump (most likely) is still flowing rated out put but up stream of the oil pump the oil is not being restricted as much thus not building more pressure. All it takes is one orfice slightly enlarged or a crank bearing not perfectly correct ( which could be a bad sign with the later). If you already changed the spring, switch to a straight weight oil if your climate allows and run it some more... Quote
Awful_Charlie Posted January 8, 2015 Report Posted January 8, 2015 A wild thought that just woke me up (!!) - for you guys suffering a lowering oil pressure as you climb, does the oil pressure vary if you change the MP? My thinking was that if the oil restrictor to the wastegate was missing (or oversize) then the controllers are just going to be flowing lots of oil through the wastegate. The restrictor is (should be!) in the T piece on the accessory housing that feeds the wastegate Another possibility is that the wastegate piston is leaking, and dumping the oil through the drain rather than through the density and/or differential controllers Both of these will use up the flow from the pump, lowering the pressure 1 Quote
thinwing Posted January 23, 2015 Report Posted January 23, 2015 Pretty constant at 74 psi once up to operating temp.Alitude ( up to 21 k as high as I go)doesnt make a difference.k Quote
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