To Repower or not from mercruiser 470 to ???

[ssn756]

Here's what a have Mercruisere 470, yes I know all about the diverse opinions. should I fix what i have or look elsewhere This came out of a 73 2250 bayliner per the HIN. I think it might have been underpowered but I fix car not boats. Man are those some HUGE pistons. ahhhooooga.

I've already pulled the head off in hopes of spinining the engine manually but still frozen I'm thinking a main bearing.

the head was in actually good shape considering age, I believe this boat/engine was not properly stored which led to what I see. the bilge was 3/4 full of rain water and no telling how long.

Top portion frozen lower unit moves freely

Can I get by with replacing the studs or is it salvage?

 

[ssn756]

Re: To Repower or not????

Re: To Repower or not????

The top is frozen don't know why will pull apart this weekend. and yes the transom is shot.

 

[ssn756]

Re: To Repower or not????

Re: To Repower or not????

Did I post in the right forum? Man I thought pictures would help a lot. :facepalm:

 

[Hubboat]

Re: To Repower or not????

Re: To Repower or not????

Did you try soaking the cylinders with Marvel, pull the oil pan?

The head doesn't look too bad, can't really see the cylinders tho. I am extremely optimistic when it comes to resurrecting things tho. That double cardian joint and outdrive teeth look rusty though. You could find a lower unit used somewhere tho if the engine ends up running.

This may be the forum for you
http://forums.iboats.com/forumdisplay.php?f=21

 

[Hubboat]

Re: To Repower or not????

Re: To Repower or not????

Here is a thread about that motor, interesting stuff, most says "run" though, lots of talk about over-heating. It's odd seeing an open deck design, alum. block and cast head too.
http://forums.iboats.com/showthread.php?t=374810

 

[1979checkmate]

Re: To Repower or not????

Re: To Repower or not????

belongs in i/o forum, not outboard

 

[ssn756]

Re: To Repower or not????

Re: To Repower or not????

belongs in i/o forum, not outboard

Crap.... I thought that's where I was at maybe one of the Mods will move me and not just lock it.

 

[ssn756]

Re: To Repower or not????

Re: To Repower or not????

Did you try soaking the cylinders with Marvel, pull the oil pan?

The head doesn't look too bad, can't really see the cylinders tho. I am extremely optimistic when it comes to resurrecting things tho. That double cardian joint and outdrive teeth look rusty though. You could find a lower unit used somewhere tho if the engine ends up running.

This may be the forum for you
http://forums.iboats.com/forumdisplay.php?f=21

I haven't.

After pulling the whole thing I've just been wondering if this thing is worth the trouble. I wonder if it's under powered/reliable. Figured id ask the guys with more experience than I do. I'm headed over there now. Thanks.

Here is a thread about that motor, interesting stuff, most says "run" though, lots of talk about over-heating. It's odd seeing an open deck design, alum. block and cast head too.
http://forums.iboats.com/showthread.php?t=374810

gonna check on that. I really would like to know the theory behind the design of this motor(fly on the wall). Thanks again.

 

[JB]

Re: To Repower or not????

Re: To Repower or not????

Crap.... I thought that's where I was at maybe one of the Mods will move me and not just lock it.

Here you go, ssn. Good luck.

 

[Bondo]

Re: To Repower or not????

Re: To Repower or not????

After pulling the whole thing I've just been wondering if this thing is worth the trouble.

Nope,... You've got Nothing to work with....

 

[ssn756]

Re: To Repower or not????

Re: To Repower or not????

Nope,... You've got Nothing to work with....

I'm just getting that point to soak in, I junking the setup for scrap weight and looking for another boat. Oh well at least I didn't lose my lunch before I got decent advise.

 

[stonyloam]

Re: To Repower or not????

Re: To Repower or not????

I junking the setup for scrap weight

There is a pretty good market for 470 parts, probably could have parted it out for a couple of hundred.

 

[ssn756]

Re: To Repower or not????

Re: To Repower or not????

The cylinder head is the best part, I also think the block is good but I haven't removed oil pan yet. I'll try parting out for funds towards my next boating venture since this one didn't pan out so good.

I really appreciate the honesty and saving me from needless work. I think I made a good choice in registering here.

 

[stonyloam]

Re: To Repower or not????

Re: To Repower or not????

LOL glad you didn't junk the motor. if you go over to e-bay and search "mercruiser 470" you can get an idea of what stuff might be worth. Good luck with your next project.