Cylinder Repaired!! Before and After Pics.

[boilerdawg]

Howdy. Some of yall have seen my borescope pics of my 200 merc. If not, well i had one scuffed up cylinder. i finally got the parts and advice needed to get her fixed up and got her done. THANKS SCREAM AND FLY FOLKS!! Heres some before and after pics for ya. i think it turned out pretty dang good!

heres some pics of the piston that i took out and of the cylinder wall damage before repair.

[boilerdawg]

heres more pics after the Muratic acid treatment.

[boilerdawg]

and finally heres the pics after honing the cylinder. i used a flexible ball hone, 320 grit. the cylinder was not tapered it measured out real good. it does have 2 scratches in it though. you can seee em in the pics. one your nail can hang and the other it wont. i know its not perfect but i think this may fix my idling problem and give me more run time overall than i had before the repair.

thanks to all who gave me the advice and info related to fixin this thing!

[boilerdawg]

any ideas on breaking in? its only one cylinder. do i baby it for 3 hours or so and run extra oil? what yall think?

[northeastcat]

I wouldnt run extra oil. Dont give it WOT for any extended time untill you have a few hours run time on it. Let it idle on the hose untill it is fully warmed up then completely let it cool down before you take it out the first time.

[steve]

Remember we mentioned to run it and assemble it as soon as you were done honing and cleaning it up if it was not torn down all the way so that the acid vapors would not get into the motor.
Get it running ASAP. 32 to 1 on dinosaur oil . Run it in gear on the trailer at idle to 1500 rpm for 10 minutes to seat the rings and get some heat into the motor.
After that everyone has their own ideas about breakin. I want my rings to seat fast before the sharp hone edges are worn or it will take forever. I want my pistons to seat slowly and I want to work the upper portion of the cylinder and upper rpm range slowly as the rods will be stretching at higher rpm. Also depends on if its a lake motor or drag motor. Do a search on break in and you'll find a ton of suggestions. Switch to Synthetic oil after 10 hours or a couple tanks of fuel.

[boilerdawg]

10-4 there steve. its been run ona hose already. i started it that same day and ran it for about 15 minutes. it aint been in the lake yet. IVE GOT TO WORK THIS WEEKEND...ughhhh. im workin now....anyway next weekend i hope to get her wet.

do yall think this will fix my idling problem i was having with it in gear?