Is the block junk?

[Sangerdude]

Ok....the block is out of the motor and the question I have is can a lifter bore be sleeved or fixed? You see, #6 exhaust bore is VERY rough and messed up, VERY!!!! I dont want to waste time and money taking it to a machine shop if this is not something that can be fixed.
The other finding was that the P.O. had used enough black silicone to choke a motor, seriously, the pick up on the oil pump was clogged with so many ropes of silicone, I would say about 14 2 inch pieces were either on or right under the pick up from the goop that squished out on the inside. I also learned that the P.O. liked his LS-6 with its 12.25:1 compression but did not like to give it the gas it liked...a lot of detonation problems on pump gas!
I am trying to talk the wife into a crate ZZ502:)
Your .02 is very appreciated.
Thanks, Bill
http://i49.photobucket.com/albums/f280/bjkgearhart/lifterbore.jpg
http://i49.photobucket.com/albums/f280/bjkgearhart/oilpan.jpg
http://i49.photobucket.com/albums/f280/bjkgearhart/pistiontop.jpg
http://i49.photobucket.com/albums/f280/bjkgearhart/piston2.jpg
http://i49.photobucket.com/albums/f280/bjkgearhart/piston1.jpg

[Daytona100]

Looks pretty rough. Might be better off with a new shortblock.:idea:

[Sangerdude]

#7 Looked about to Grenade!!! Oh...all that silicone is what was already in the oil pan...not pulled off and dropped in by me...it was all already chillin in the oil pan:mad:

[victorfb]

looks like your in for a complete rebuild. over bore, new pistons, ect, ect, ect. as for the lifter bore, yes it can be sleeved with a bronse bushing. weighing all the options and costs is what you need to do now. in some cases it is cost effective to get a crate, or a complete build from a good builder. crate motors are useually less expensive IMHO. but you will get alot of people on here telling you to not run them as they are not set up for marine use. do your homework and you will find that not to be allways true.
after seeing the abuse that block took so far, id be real cautious and check EVERYTHING quite clearly on all the components. what is your budget and expectations?

[Sangerdude]

Well, I know that a partially assembled crate 502 is about $6300. I dont want to deal with the high compression problems with the cost of "high" octane fuel. My liking of the crate motor is that I can have it "marine balanced" and run 92 octane all day long with little to no timing problems. As it is, this motor was so far "out of time" in order to not PING it was choking its potential anyway.
Why couldnt a crate motor be applied to a marine situation anyway? I know it is balanced for an automobile, but I would take it to a machine shop and have the rotating assembly "marine balanced"...shouldnt that be adequate?
Thanks!

[victorfb]

some think that the clearances on the crank journals are too tight for marine use. and yes they can be changed, and sometimes ordered with differant clearances.

[Sangerdude]

How different are the clearances? Just curious...what do most "marinars" do?:D

[victorfb]

in many cases the marine engine builders set them up with looser clearances. at what numbers i wont say because everyone is differant and i dont want to get in a arguement with someone about it.

[Sangerdude]

Pm Sent!!! :d

[SmokinLowriderSS]

Clearances within standard build clearances, but from the middle of the clearances toward the wider side. The upper end of the clearances is safe for hard marine duty.

[TIMINATOR]

Car engine in a boat? article last year in ***boat. Answers a lot of questions. TIMINATOR