Refreshed 1075's less than three hours on refresh first time out ran for about an hour starting at 2000rpm for ten minutes the 2500 then 3000 then 3500 returned to marina no problems. Second time out ran for twenty minutes afer warm up to bring oil temp up, came off plane to idle alarm went off port engine oil pressure,shut engine down idled back to marina on starboard engine. Third time out after warm up ran for thirty minutes coming back to no wake zone down off plane to idle, alarm low oil pressure came on again. Last time yesterday ran for thirty minutes no problem starboard engine matained 52# oil pressure at 2200 rpm port maintained 48# at 2200, came back to no wake zone off plane the port engine dropped to 6# oil pressure alarm went off shut engine off,
starbord engine went to 14# at idle alarm still on, starboard came back to 22# so we could idle back to slip. Coldshoe 1 started the thread today about this problem I wanted to give more detail,
both engines sent to Mercury Racing for refresh bought two of the last four 1075 kits Mercury had, sent drives to Destin Florida to the former Mercury Racing 6SSM drive guru to refresh, replaced both transmissions with brand new ones from Bam, one transmision had mixed parts inside when I purchased boat so I replaced both, Hering re-did the props. The boat only had 104 hours when I sent everything to be refreshed. Also since the rebuid we have replaced the crank and cam sensors on starboard engine. First time performance boat owner about to be overwhelmed, any ideas would be greatly appreciated.

I can understand your frustration, What oil are you running, what was the oil temp

will have to check on the name and type oil, temp was 150

Who installed engines? What was oil pressure when you where running? You need to have someone that knows what a oil filter should look like when cut it open good engine guy. They make a tool to cut them open. Post pictures if you can of the filter. If no bearing material in the filter that would be a good sign. Who knows maybe wrong oil.

starboard 52# at 2200 rpm port 46# at 2200

I'd be putting a mechanical gauge on to verify the electrics.

Are you reading numbers off gauges or smart craft? 1075s like their oil pressure. Curious on oil brand also and check tank levels and hoses to pump.