I have a Merlin 2 Tall deck ( 516 ) that is filled up to the bottom of the water pump holes . Should I be concern on running this engine for a very long time . I know the oil temp have been hitting around 245 after about 8-10 passes , but what about hot spots in the block ? I somethime will cruise about 6-8 mile one way and then wait awhile and cruise back .
I lost a a rod bearing last outing and it took out the crank , another rod and scared 6 pistons . Do not belive oil temp caused the bearing failure , I think the bearing just took a dump ,, Can;t tell ..
So before I rebuild this engine , just wanted to see what i should be concerned about .
The engine was originally in a race boat and then i bought it and installed in my Cole TR-4 river boat ,
Block has been to the machine shop and they said it would clean up at 4.560 , The block can be bored to 4.625 is what I been told .
So , if I use this block , I was thinking af making a 588 from it 4.560 bore and a 4.50 crank ..
So what should I be concerened about on a Merlin 2 block filled up to the bottom of the water pump holes ??
Thanks for the help ..