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    2nd wiped Camshaft OMC 460

    I'll check that today. thanks for the reply. I did confirm that its definitely the head where I changed the umbrella seals to positive seals
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    2nd wiped Camshaft OMC 460

    I didn't have any work done on the heads myself. The heads came the way they are. However its obvious the engine had some work done on it previously. Cylinder is bored 40 over and when I was doing the valve job I noticed one head had positive style seals and the other had umbrella. I was...
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    2nd wiped Camshaft OMC 460

    I did use the priming tool and it seemed to get adequate oil to every bore. I will have to check again to see if the bad bore gets less that the others. The valve seal to retainer was good. Plenty of clearance and no coil bind neither. When I did the valve job myself one head had the...
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    2nd wiped Camshaft OMC 460

    The valves move freely but I have not checked the spring pressure. I did eyeball the lifter bore and it seemed be good but in hindsight I don't know for sure. There were no visible burrs or any I could feel neither. But I now I want to check lifter clearance because it can't be a...
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    2nd wiped Camshaft OMC 460

    The initial removal yes we cleaned it pretty good. Pressure washed and compressed air but we did not hot tank it. The 2nd removal we just changed the oil and filter. Wasn't the smartest decision but both times led to the the lifter/lobe failure.
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    2nd wiped Camshaft OMC 460

    Hey guys! Yeah its as bad as it sounds. At this point I'm just trying to figure out what is causing this problem. Bear with me on this long story and please help!! Backstory: Originally pulled engine to address a transom leak. While engine was out we figured we should do a once over and...
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    460 King Cobra oil pump

    We've been using just regular sae 30 with a zinc additive bought from autozone
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    460 King Cobra oil pump

    fingers crossed
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    460 King Cobra oil pump

    Yes we made sure to use the zinc additive. I'll check the pan and the pickup screen when we swap the cam.
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    460 King Cobra oil pump

    I read about having a stuck PRV and the book gives some specifics on spring tension but in the manual it didn't really go into detail on how to check it. Any tips?
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    460 King Cobra oil pump

    Hello everyone, In a week or so I'm pulling the engine to replace a cam shaft in my '89 460 King cobra. While out in the water I noticed that my oil pressure would drop significantly at higher rpms. (sorry I don't have the specifics but I remember it was in the 40psi range at higher rpms)...
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    '89 OMC 460 Camshaft

    Found a lifter failure on our 460 and it looks like we're going to swap cam shafts as a result. Need some advice on choosing the right camshaft. The book only gives the specs on lobe lift of this engine. (Intake .285 Exhaust .290 with max allowable lift loss .005) Most websites only give...
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    Wiring question: Slave solenoid to Ignition coil

    Hello again, I have a wiring question for you guys, hopefully you can help me out. I have an '89 OMC King Cobra. After rebuilding the engine I was putting all the wiring back together and noticed some mystery wires that were cut by the previous owner. I always wondered what they were for so...
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    OMC 460 Timing / Harmonic balancer

    Hey guys, I'll be doing a timing procedure on an 89 460 King Cobra pretty soon. I know I'll need a dwell meter to set dwell and a timing light to adjust timing, however the harmonic balancer or crankshaft damper on the engine is very rusty on one section, which happens to be the section where...
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    Electric fuel pump and placement

    I have a 89 7.5 L OMC 460 king cobra. I've decided to go the electric fuel pump route. I know about installing the Oil pressure switch. I'm more curious as to which electric fuel pumps everyone likes and placement 1) . Should the new electric fuel pump be placement between the fuel tank...
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    tracking down a leak through the transom

    It's an 89 Bayliner 2855 Ciera Sunbridge with the 7.5L 460 King Cobra. I can reach in there and the water seems to be coming from just above the transom bearing plate (see pic).
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    tracking down a leak through the transom

    Hello everyone, Was out on the water and noticed some water in the bilge. Had previously thought it was coming through a thru-hull fitting but I tracked it down near the y-pipe. (Check out the video). I've been searching through videos and parts diagrams to see if I can locate the most...
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    Spark Plug wire order

    Hey guys, this might sound like a dumb question but help me out here. I have a 89 460 king cobra. We were working on sparkplugs and what not and forgot to label each wire once we removed the wire from the distributor cap (they're currently all off). I do understand the firing order and I...
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    Starter not engaging the Flywheel ...90HP

    Bear with me on this long story. I'll give as much info as I can but I'm stuck on this one. I've been working on my Father's '96 90 HP Mercury Outboard Model: ELPTO After noticing the positive power cable running from the solenoid to the battery was corroded, I decided to replace it. I went...
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    Anode Thread size???

    This might be a question hard to answer but I can't for the life of me figure out the right size for the anode bolt on the outdrive. I have an 89 7.5 l 460 King Cobra. I recently bought a new anode for the outdrive. However, the original anode was not there nor was the bolt to hold it in...
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