12-17-2013, 10:36 AM
The 43 Convertible is a great boat.
Which 6V92s do you have? 550 Mechanicals or the 625 DDECs?
Both engines are good engines. They do however require great care in order to keep them running well. Change the oil often! I suggest every 100 hours or once per year. If you have to let the engines sit for more than a few months, I would change the oil prior to the dormant period. Check your oil before each trip! Detroits will burn oil and running low will be the kiss of death to a 6V92. Change your raw water impellers every year! Buy new ones, don't use that one that has been sitting in a box on the boat for 15 years. 6V92s do not like heat! Clean the heat exchangers and all coolers every 2 years! When you check your oil, smell it and look at the color. 6V92s have been known to dump fuel (bad injector) into the cylinders and it ends up in the oil thinning it out and eventually destroying the engine. The trick is catching it early before you have a catastrophic failure. My last recommendation is to run them easy. I suggest a cruise RPM of between 1800 and 2000 (provided they are able to reach their rated WOT RPM of 2350). This should give you the best life from the engines.
Don't be intimidated, just be diligent and you should have many years of fun with the boat.
Good Luck!
Which 6V92s do you have? 550 Mechanicals or the 625 DDECs?
Both engines are good engines. They do however require great care in order to keep them running well. Change the oil often! I suggest every 100 hours or once per year. If you have to let the engines sit for more than a few months, I would change the oil prior to the dormant period. Check your oil before each trip! Detroits will burn oil and running low will be the kiss of death to a 6V92. Change your raw water impellers every year! Buy new ones, don't use that one that has been sitting in a box on the boat for 15 years. 6V92s do not like heat! Clean the heat exchangers and all coolers every 2 years! When you check your oil, smell it and look at the color. 6V92s have been known to dump fuel (bad injector) into the cylinders and it ends up in the oil thinning it out and eventually destroying the engine. The trick is catching it early before you have a catastrophic failure. My last recommendation is to run them easy. I suggest a cruise RPM of between 1800 and 2000 (provided they are able to reach their rated WOT RPM of 2350). This should give you the best life from the engines.
Don't be intimidated, just be diligent and you should have many years of fun with the boat.
Good Luck!
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