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1974 235 OMC 351W

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Michael Quinton
New member
Username: halfcard

Post Number: 1
Registered: 08-2009
Posted on Thursday, August 27, 2009 - 05:25 pm:   Edit Post Delete Post View Post/Check IP

This motor is, was sitting in a 1974 Sleekcraft 21ft. by Nescher. The last owner let the block freeze, crack is under the intake on the right side goes clean to the head. Could somebody please point me in the right direction to keep me from getting ripped off. Just don't know what route to take. Thank you Mike
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C.DeF.
Member
Username: ipmarine

Post Number: 33
Registered: 02-2009


Posted on Thursday, August 27, 2009 - 06:50 pm:   Edit Post Delete Post View Post/Check IP

Mike,
Just what is it you're asking? If the block is cracked you're pretty much looking at replacing the powerhead or motor.
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Michael Quinton
New member
Username: halfcard

Post Number: 2
Registered: 08-2009
Posted on Thursday, August 27, 2009 - 10:16 pm:   Edit Post Delete Post View Post/Check IP

Thanks for the reply, Could you tell me the difference of a omc block and car or truck block.
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makomark
Senior Member
Username: makomark

Post Number: 1320
Registered: 09-2008
Posted on Thursday, August 27, 2009 - 11:32 pm:   Edit Post Delete Post View Post/Check IP

Mike:

There are plenty of posts on several board going into the differences. Most are driven by safety factors associated with using gasoline in a boat. Some are material differences, to ensure reasonable length of use.

If your block is cracked, you don't have any core value. If all the bolt-ons are original, they are probably not worth swapping to another block...35 years is a long time in a boat. It would be cheaper to buy a complete marine engine, either new or used.

Check with a larger local marina and see if they have any trade-ins from repowers. You may probably find some on e-bay or craigslist, too. The local papers are another option...some have found reasonable deals by internet searches.
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Frankie's Marine
Member
Username: mercury39

Post Number: 17
Registered: 03-2009
Posted on Wednesday, September 02, 2009 - 08:49 pm:   Edit Post Delete Post View Post/Check IP

Check With Your Machine Shop in Your Area, They Can Rebuild For You With Another Block, Auto Block Ok If You Get The Right One, And Change Out All Your Marine Parts, And Build Back Marine
Good Luck Frankie
frankie@frankiesmarine.com

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