Rod bearing failure whats wrong?
#21
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Heat,the back of the engine is the last to get water!Oil pan to small,the 7-8 is the closest to the oil pump so first to get oil,also first to starve of oil if all the oil is gone and is up top!Wrist pin clearence,marine engines need to be set up on the loose side because of the cold water going threw!What type of fuel pump? Go with the mechanical,if the voltage isnt right on an electric pump the engine can lean out and overheat the cyclinders,especialy on a single plain manifold,the back two cylinders are last to get fuel and water!Go with holleys at minimum if you can,carter style carbs floats can stick causing a lean condition!No more than 32 degree total advance!Cleandlyness is next to goodlyness,this is a must!
#22
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Originally Posted by mopower
Stupid suggestion but a definite possibility...oil lines to the filter are backwards and you're using an oil filter with an anti drainback valve. This will restrict the flow of oil severely while still showing good pressue on the guage.
Just a thought since everything else seems to have been covered.
Just a thought since everything else seems to have been covered.
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#23
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Originally Posted by JJONES
Heat,the back of the engine is the last to get water!Oil pan to small,the 7-8 is the closest to the oil pump so first to get oil,also first to starve of oil if all the oil is gone and is up top!Wrist pin clearence,marine engines need to be set up on the loose side because of the cold water going threw!What type of fuel pump? Go with the mechanical,if the voltage isnt right on an electric pump the engine can lean out and overheat the cylinders,especially on a single plain manifold,the back two cylinders are last to get fuel and water!Go with holleys at minimum if you can,carter style carbs floats can stick causing a lean condition!No more than 32 degree total advance!Cleandlyness is next to goodlyness,this is a must!
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Rob;
I stand corrected. I should have said sometimes some of you guys! I know there are a lot of owners out there who do a great job at building strong motors, there just seem to be more guys like this poor fellow who get in deep!
Ray @ Raylar
I stand corrected. I should have said sometimes some of you guys! I know there are a lot of owners out there who do a great job at building strong motors, there just seem to be more guys like this poor fellow who get in deep!
Ray @ Raylar
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Originally Posted by Raylar
Rob;
I stand corrected. I should have said sometimes some of you guys! I know there are a lot of owners out there who do a great job at building strong motors, there just seem to be more guys like this poor fellow who get in deep!
Ray @ Raylar
I stand corrected. I should have said sometimes some of you guys! I know there are a lot of owners out there who do a great job at building strong motors, there just seem to be more guys like this poor fellow who get in deep!
Ray @ Raylar
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Originally Posted by fbh-velocity
I do have mechanical fuel pump. But maby I should go lower on thermostat im 188* freshwater cooling. Any suggest what water temp is best. I know the saltwater cooled is only 142* but thats more to sure the salt not to crystallize than its good for the engine or am I wrong?
140-160 seems to be a good water temp for most. I think the mercruiser high water temp alarm is set for 190 so you must be setting that off.
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Originally Posted by Wobble
What oil do you run in your motor?
140-160 seems to be a good water temp for most. I think the mercruiser high water temp alarm is set for 190 so you must be setting that off.
140-160 seems to be a good water temp for most. I think the mercruiser high water temp alarm is set for 190 so you must be setting that off.
I'm thinking about finding another block? But if bigger oil-hose and bigger oil cooler are the case I should maby give it the last chance by rebuild it again. And high volume oil-pump.
Should I use another oil?
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Depends on your weather
I'd break it in easy with an SAE 30 for 5-10 hours then switch to a 20/50. I am a big fan of synthetic so I run the M-1 v-twin. Castrol 20/50 is a good oil also.
I'd break it in easy with an SAE 30 for 5-10 hours then switch to a 20/50. I am a big fan of synthetic so I run the M-1 v-twin. Castrol 20/50 is a good oil also.
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Originally Posted by Raylar
Rob;
I stand corrected. I should have said sometimes some of you guys! I know there are a lot of owners out there who do a great job at building strong motors, there just seem to be more guys like this poor fellow who get in deep!
Ray @ Raylar
I stand corrected. I should have said sometimes some of you guys! I know there are a lot of owners out there who do a great job at building strong motors, there just seem to be more guys like this poor fellow who get in deep!
Ray @ Raylar