Merc V-200 87´ deceased or not?

[wrechin2]

It means the steel cylinder has been bored .030 (30 thousands) over the stock bore size. This is done when the block has damage. So the cylinder is bored and a oversized piston is installed.

[bimmer1]

It´s beginning to clear up for this rebuild. Sleeves, Gaskets, Piston, Rod etc. from US (thansk again Capt.insane-o), Pistons rings from the UK, Crank (at last) from Sweden. So the only thing missing now is to get the Block to the shop to have its to worn cylinders resleeved. Hopefully the reassembly will beginas soon as the Block has been resleeved. Pics below. Just went through this Thread and that reminded me to thank all of you for your help and replys.

[bimmer1]

I finally got the motor assembled over a year after the breakdown. It was the moment of truth when the key was turned for the first time but what a relief when the motor jumped into life again. The whole neighborhood was covered in nice blue two stroke smoke. I forgot to take pics or movies of the scene but believe me, it was sensational. Thanks to you all for helping me with parts and advice.

One thing that remains is the breakin periode. The motor got new rings on all pistons/2'sleeves etc. Whats the advice regarding the breakin periode?

[rock]

Most important is to take your time and don't rush the process. The longer you take to break it in the longer it will last. I like to warm motor up then cool it down and repeat this cycle several times before actually using it. Run double oil the first tank keeping the rpm under 3500 varying rpm level. After that avoid long open throttle periods for another tank or two. After that have fun.

Rock

[bimmer1]

Thanks for your reply.
Seems that I´m on the right track here. The innitial startup only lastet for 2-3 mins since I wanted to spare the neighboors from being choked in nice blue smoke. However the motor got warm and didn´t get above 1500 rpm during the start up run. I actuallly did ad some extra oil to the tank since I remembered that part from when I first did the break in on my first new 25 HP Merc.
Thanks for your help and the above advice.