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Old 08-03-2014, 12:43 PM
spievy79 spievy79 is offline
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Boat: Ski Supreme, Sierra SS,1987, 351W 240hp
Location: Midwest
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cracked block, looking for best suggestions

Upon my top end rebuild I found a 2" crack at the water jacket. Curious what options I've got here. I already spent about $900 on new heads, intake, gaskets etc. prior to finding this. Wondering what the possibilities are of finding a 351w or 302 used block and swapping all my marine parts over, or a reman. If reman, a good suggestion on where? Thanks in advance.
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Old 08-03-2014, 12:47 PM
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CantRepeat CantRepeat is online now
 
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$1350 351w short block or $1500 for a long block.

Quote:
351W 5.8L Marine ENGINE 1970 to 2002 Ford
Click on image to see more detailed pictures
This is a completely remanufactured 351W 5.8L TRUE marine engine.Cam specs are Intake 206 at .050 lift 445, and Exhaust 221 at .050 lift 453.Will work with all MerCruiser, OMC, Volvo Penta, Pleasure Craft, Crusader, Chris Craft, Yamaha & more
http://www.rapidomarine.com/default....s/default.aspx

Scroll down to find that motor.
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  #3  
Old 08-03-2014, 01:19 PM
spievy79 spievy79 is offline
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Are they a reputable company in your opinion?
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Old 08-03-2014, 01:36 PM
burton2012 burton2012 is offline
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Boat: 1992 Prostar 190
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I just replace the 351w on a 92 Prostar. Got the motor from Raul (the owner) of Rapido Marine. I live in Upsate NY, the motor came from Florida. The first motor sent fell off the transport truck(Sego Shipping) en route. Broken all to hell. He did send a new motor, after the first one was returned. No gaskets. Called him, he sent the gaskets. Installed and running as of yesterday. Set me back 5 weeks, and have not skied yet.

Motor runs great. My mechanic has installed 4 motors from Rapido, and all have worked well. So, my experience was mixed. Not really his fault about dropping the motor.

He does have a couple of upgrades to add horsepower, if you want. I did the $50 upgrade, and skipped the $150 upgrade. Not sure if the rplacement motor had my requested upgrade, but at this point, I'm happy to be on the water...
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Old 08-03-2014, 02:06 PM
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thatsmrmastercraft thatsmrmastercraft is online now
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If you want an engine from a reputable company, get one from Jasper Engines & Transmissions. Jasper marine engines are top of the line, but they aren't ever your cheapest option.
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Old 08-04-2014, 08:33 AM
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bturner2 bturner2 is offline
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Michigan Motorz is popular up here.....

http://www.michiganmotorz.com/
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  #7  
Old 08-05-2014, 11:42 AM
eriksen4 eriksen4 is offline
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+1 for Rapido. Put a new 351W in last year (Memorial Day) from them. Running great, just got back from Lake Gaston for a week putting a lot of towing hours in. Only negative from the engine was Raul said it would take one week and actually took two. Mechanic was very impressed with motor though.
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  #8  
Old 08-05-2014, 12:22 PM
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JimN JimN is offline
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Quote:
Originally Posted by spievy79 View Post
Upon my top end rebuild I found a 2" crack at the water jacket. Curious what options I've got here. I already spent about $900 on new heads, intake, gaskets etc. prior to finding this. Wondering what the possibilities are of finding a 351w or 302 used block and swapping all my marine parts over, or a reman. If reman, a good suggestion on where? Thanks in advance.
Depending on where the crack is located, it may not be much of a problem. I know of people who made sure the crack was dry and clean, then ground it out a bit and used JB Weld, which lasted for years. As long as no internal damage has occurred, it's worth a try. Does it look like the freeze plugs have pushed out, at all?
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Old 08-05-2014, 12:32 PM
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mikeg205 mikeg205 is offline
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Quote:
Originally Posted by JimN View Post
Depending on where the crack is located, it may not be much of a problem. I know of people who made sure the crack was dry and clean, then ground it out a bit and used JB Weld, which lasted for years. As long as no internal damage has occurred, it's worth a try. Does it look like the freeze plugs have pushed out, at all?
JB Weld? was wondering if that was going to come up ...
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Old 08-05-2014, 02:38 PM
spievy79 spievy79 is offline
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Join Date: Sep 2013
Boat: Ski Supreme, Sierra SS,1987, 351W 240hp
Location: Midwest
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We ended up making a channel and welding it at my buddy's machine shop. No damage to the cylinders it appears. I'll run it and seehow long it lasts. I figure I'm in the same boat either way needing a new block, but maybe I can finish out the summer with any luck and rebuild over the winter. Anyone see any reason to not do that please advise.
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