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Old 10 May 2010, 06:24   #1
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more than just a break down

one of the guys out with us sat on a 4.8 ribcraft that use to have a mariner 50 on the back, the engine came off after jumpin a wave, managed to pull the engine back on board with the thottle cables , i'll post pic after but have anyone seen that before
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Old 10 May 2010, 06:25   #2
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Old 10 May 2010, 06:32   #3
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Were his main hinges corroded?? Hope he can salvage if not expensive wave!

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Old 10 May 2010, 08:11   #4
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Same happened to me with an evinrude 150, doing 48 knots at the time
By the time I picked myself up off the floor all I saw was the cowling floating off into the distance...
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Old 10 May 2010, 08:52   #5
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Old 10 May 2010, 09:05   #6
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I bet thats what he said ! Never seen that before, but I guess it may have been better financially to let the thing drop off !
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Old 10 May 2010, 09:26   #7
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Scary stuff that, exactly the reason I replaced both upper and lower engine mounts on my Tohatsu when the lower mount started to split.

On another occasion I was out in a Dory with a Mariner 40 on the back and was pursuaded by a friend of mine to allow him a blast in the Dory and I would follow in his Rib.

All was going well and I was following behind him when the engine came loose from the transom and was lying on its side bouncing along on the wake with propeller spining wild at head height!

When the boat came to rest all that was stopping the engine from going overboard was the steering and throttle cables.

We dont know if he had hit something in the water or had the clamps worked loose, either way it totalled the metal plate on the transom and took a pretty good chunk out of the gellcoat underneath. I repaired the damaged and took the time to drill holes through the transom and bolted the engine back on. Something we should have really done in the first place!
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Old 10 May 2010, 10:34   #8
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Something similiar just happened to one of the local scallop divers with his 150 Yam.
He showed me the Stainless plate on sunday that he had to have fitted to cover all the transom damage from the engine bouncing up and down on two bolts.
Apparentely the top two bolts snapped and the engine tried to pivot off the transom at full chat, it made one h**l of a mess of the transom bottom.
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Old 10 May 2010, 16:51   #9
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Been there with a Honda 150. Held on by steering hoses etc. Sadle bracket broke in two. Fun times.
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Old 10 May 2010, 16:54   #10
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My mate had the top mounts fail on his a couple of weeks ago. That reminds me, anyone want a cheap old Mariner 40hp with knackered top mounts?!
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Old 11 May 2010, 05:24   #11
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Looking at the pic I'd guess the mounts failed. Strangely enough not unrelated to the reason I'm replacing the creaky (literally) old things on mine during the rebuild.......

Only "off transom" moment I've had was a Mariner 15 off the back of an 11' dory. No transom plate, and it just worked it's way up the fibreglass & fell off. Thankfully happened whilst getting on the plane so it literally just dropped off. The good thing was the deadman was on the engine & clipped to the back of my lifejacket belt (the one advantage of a boat that small!) and it pulled out as it went ofer the side, saving it a good drink of salt water. It was wire steering, and the shock loading pulled the steering colum off the floor! Thankfully it had a tiller as well, so after hauling it back onboard, bailing the cowl innsides & disconnecting the remotes, we carried on with the tiller......

We fitted a cast ally plate with a lip to prevent it happening again. A few(!) years later & a Hp upgrade and so far so good.........
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Old 11 May 2010, 06:06   #12
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3 mentions of a 150hp here.
is this a unknown fault or just the odd one.
caused by what poor maintenance or what .?
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Old 11 May 2010, 13:11   #13
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seen a 3cylinder Penta come off a boat that was borrowing it to see how it performed. No thru bolts just the thumb screws. Came off at full chat-sucked in water, pistons came up against an incompressible medium and bingo- the hydraulic lock caused con rods to break, crankshaft to bend and wallet to suffer a severe amount of damage. ouch!
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Old 11 May 2010, 13:43   #14
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Quote:
Originally Posted by wavelength View Post
seen a 3cylinder Penta come off a boat that was borrowing it to see how it performed. No thru bolts just the thumb screws. Came off at full chat-sucked in water, pistons came up against an incompressible medium and bingo- the hydraulic lock caused con rods to break, crankshaft to bend and wallet to suffer a severe amount of damage. ouch!
Or £50 for a replacment engine?
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Old 11 May 2010, 14:26   #15
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Or £50 for a replacment engine?
naw long time ago and the 3 cylinder volvo penta was not an arf bad bit of kit back then - and surprisingly quiet for a two stroke-esp after it siezed!
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Old 11 May 2010, 19:07   #16
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Quote:
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I bet thats what he said ! Never seen that before, but I guess it may have been better financially to let the thing drop off !
It's never too late...
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