I picked up an 85 'Rude 90hp over the weekend for the low low price of $Free.99. The catch was, I had to rebuild the powerhead. I spent part of Saturday and most of the morning Sunday taking the motor apart down to the powerhead.
Here's the "sitch". The number 2 piston is fried. The guy I got the motor from said the VRO quit working on the lake one day. When they got back to the boat ramp, he pulled the plug and it was caked with aluminum. He put the plug back in and quit using the motor. That was about 4 years ago. When I pulled the cylinder head, I realized the severity of the damage (if I had a picture with me, I'd post it but I'll try to remember to do so tonight).
Anyway, the guy told me he had the motor rebuilt back in the mid 90's. What he remembers is just having the cylinders resleeved and not having new pistons put in. Just new rings. I noticed after taking the cylinder cover off the #1 and 3 pistons, the pistons are stamped with "030". I'm no genius, but my pea sized brain leads me to believe the pistons are .030 pistons. Additionally, the # 2 cyl has a small amount of aluminun melted to the wall and the #3cyl has some grooves in it.
My questions are, does the "030" mean they're 30 over pistons and if so, can I have the sleeves removed, new sleeves put in and then put new .030 pistons in?
I plan on installing a new rebuild kit with new pistons, wristpins, gaskets, etc. I figure if I'm going to have the powerhead broke open, I might as well make it as fresh as possible. Is there anything else I can do to the powerhead along the lines of cleaning the insides?
Any other suggestions/comments?