Professional Motor rebuild question...
#11
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Well, it's not hard to find a leak to be honest if it's leaking that bad, now did they dyno it? fire it on a stand and it was ok? then in boat it leaks? or did they put on valve covers and pan or did you and buddys?
if it is building that much crankcase pressure that's on them, not you, ask them what the ring gaps are and how they finished cylinders..
in what form did you get engine back? carb to pan? longbock? shortblock?
if it is building that much crankcase pressure that's on them, not you, ask them what the ring gaps are and how they finished cylinders..
in what form did you get engine back? carb to pan? longbock? shortblock?
#13
I am just a backyard engine builder and have never had a problem with oil leakage. You need to take it somewhere else.
OH and BTW I don't build stock engines. the latest is 598 cubes at +800 HP ( engine is designed and built using parts for 1500 HP as I plan on adding a Procharger )
OH and BTW I don't build stock engines. the latest is 598 cubes at +800 HP ( engine is designed and built using parts for 1500 HP as I plan on adding a Procharger )
#14
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#15
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They more than likely will come back with silicone gooped on them . A good builder would not have sent them out this way in the first place. Craftsmanship and pride or just money in his pocket.
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I am a little confused. you said your mechanic said that it may be building too much pressure and needs valve covers with vents. how is the block vented now? does it have a pcv or what system for the crank pressure to vent? if it has valve covers with no vents I can see how it would build pressure in the block and push oil out. also what are you sending out with the engine and what are you keeping as far as external hardware? when ever I run an engine in on my test stand I use all the lines and coolers, etc from the boat so if there is a leak in something it will show up on the stand instead of the boat. more details are needed on what has been done on what parts.
#19
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We need more info please
Sorry to hear that you are going through this, definitely not fair, and all to common in the marine world.
But let's make sure we are not missing something here.....
Sounds like you decided not to dyno the first time? Running a freshly built engine on the dyno has WAY more benefits then recording power output, like tuning, properly breaking in, and checking for LEAKS ;-)
Hopefully your builder stands behind his work in some way, but that doesn't necessarily mean free, since we don't know what your original arrangements were. At the very least I hope you both have better communication in the future.
OSO brothers can't guarantee everything, but we will offer as much advice as possible to help everyone protect themselves from issues like these.
Good luck
Sorry to hear that you are going through this, definitely not fair, and all to common in the marine world.
But let's make sure we are not missing something here.....
Sounds like you decided not to dyno the first time? Running a freshly built engine on the dyno has WAY more benefits then recording power output, like tuning, properly breaking in, and checking for LEAKS ;-)
Hopefully your builder stands behind his work in some way, but that doesn't necessarily mean free, since we don't know what your original arrangements were. At the very least I hope you both have better communication in the future.
OSO brothers can't guarantee everything, but we will offer as much advice as possible to help everyone protect themselves from issues like these.
Good luck
#20
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yes, were engines complete, or did you put on pan, valve covers etc ? if you are loosing that much oil that quick should not be hard to find, sound more like a oil line or fitting ? put a go pro camera in there and run it...