Boats For Sale:
302 Block Swap |
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roncoo 
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Joined: March-20-2014 Location: Alabama Status: Offline Points: 9 |
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 Topic: 302 Block SwapPosted: June-25-2014 at 2:55pm |
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I just bought a boat with a cracked 302 Crusader Model 220hp. It is counterclockwise rotation (LH) what is involved in swapping the block out using an automotive 302 block? Help
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roncoo
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: June-25-2014 at 6:58pm |
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You will need to use brass freeze plugs and reverse rotation seals. Depending on block some RR seals are getting hard to get,some blocks used 2pc main seal newer ones use 1 pc the ones I believe are the harder ones to get.
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SNobsessed
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Posted: June-26-2014 at 12:52am |
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Gary, he said his boat had a LH engine, so the std RMS should work ok.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Gary S
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Posted: June-26-2014 at 1:39am |
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Oops even easier then
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Tim D
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Posted: June-26-2014 at 2:11pm |
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Counterclockwise viewing from the front??
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Tim D
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roncoo
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Posted: June-26-2014 at 2:27pm |
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Engine is a basket case. Found manual on this site and it says left rotation (counterclockwise). What parts do I look at to make sure which way the motor rotates?
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roncoo
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SNobsessed
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Posted: June-26-2014 at 7:47pm |
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To me, the easiest way is to pull the starter & see which side of the flywheel teeth are worn. Otherwise, if crank is free, you can take valve cover off & watch the valve action on a cylinder.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Capn Dan
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Posted: June-28-2014 at 4:58pm |
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I have a 1965 Ski Nautique. The engine is pumping oil out of rear main seal. I suspect a broken or cracked ring. What engine will swap with a Ford 312?
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Capn Dan
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MrMcD
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Posted: June-29-2014 at 5:55am |
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Other than a 292 I think the 312 is unique. 292 and 312 were considered Y blocks.
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: June-29-2014 at 8:31am |
Correct. 252, 272, 292 and 312's are a Y block. A Y block is needed. |
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Tim D
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Posted: June-29-2014 at 6:01pm |
I would change the rear main seal before swapping engines. |
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Tim D
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Gary S
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Posted: June-29-2014 at 6:04pm |
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I would too but either way it has to come out
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MrMcD wrote: