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Cracks near outdrive 1978 Wellcraft Nova 250

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Cracks near outdrive 1978 Wellcraft Nova 250

Old 03-10-2019, 07:14 PM
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Default Cracks near outdrive 1978 Wellcraft Nova 250

Iím looking to purchase a 1978 Wellcraft Nova 250 powered by a 310HP Chevy 350 and Mercruiser outdrive. This boat has been owned by the seller for 35 years and meticulously taken care of. The only concern I have are some hairline cracks above and to the sides of the outdrive. The entire stern/transom of the boat was replaced 5 years ago. There are no other signs of stress on the stern. Any thoughts?
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Old 03-10-2019, 07:17 PM
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Default Pica

i am new to this site and itís not letting me post pics until I have 10 posts.
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Old 03-10-2019, 07:25 PM
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Keep replying until you get enough posts to show us pictures
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Old 03-10-2019, 07:32 PM
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Must keep replying to show pictures.
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Old 03-10-2019, 07:33 PM
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Pics are coming
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Old 03-10-2019, 07:34 PM
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get ready
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Old 03-11-2019, 02:51 AM
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I had a 1979 Wellcraft 250 Nova Offshore for 11 yrs.. Had Twin small blocks. You need to look a the Stringers, especially where the Engine Mounts are. They just Lag bolted the Engine mounts to the stringers.Mi9ne had some rot there. Look at the stringers to see if there are any limber holes drilled thru and check for rot. Transom....Check very well!! The Bell housing Bolts will corrode away and the Bell housings will lose there tension and let water into the Transom. Had to replace mine. More than likely You will find some Rot somewhere. Gas Tank at this age could also be suspect. Boat has a 24.5 degree dead rise,not sure how it runs with a single as I had twins. Don't think I would have wanted less tan the Twins I had.

I will tell You in a 2-4 foot chop, It is a WET Boat! When I would be running and came down into a swell ,a sheet of water would come up over the Bow,up the windshield and if You did not duck.....You were soaked! Anyone sitting in the back would get drenched also!
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Old 03-11-2019, 02:58 AM
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Hello, when you get the pictures, post them up, are you sure the engine is a 350 (5.7) and not the 7.4litre 454 rated at 310hp?
Hope this helps.
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Old 03-11-2019, 04:07 AM
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Originally Posted by buxa View Post
Hello, when you get the pictures, post them up, are you sure the engine is a 350 (5.7) and not the 7.4litre 454 rated at 310hp?
Hope this helps.
Mine had 350/260 h.p. Engines...Don't think they had 310 hp. small blocks, unless the Engine has been replaced at some point.
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Old 03-11-2019, 04:33 AM
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Originally Posted by Lone Ranger View Post
Mine had 350/260 h.p. Engines...Don't think they had 310 hp. small blocks, unless the Engine has been replaced at some point.
Thats what I thought , the 7.4 454 was available in 310hp config and various others, I have seen 300 small blocks but much newer motors.
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Old 03-11-2019, 05:12 AM
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I'm just looking forward to seeing the pics. It's not my style of bait, but I always thought the novas were cool.
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Old 03-11-2019, 10:05 PM
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Not only do I need 10 posts to be able to post pics, I can also only post 5 times in a 24 hour period.
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Old 03-11-2019, 10:06 PM
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Default Pics coming late tomorrow night

24 hrs from now
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Old 03-11-2019, 10:06 PM
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Some weird rules for newcomers to this forum
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Old 03-11-2019, 10:07 PM
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1 more post and Iím locked out for another 24 hours.
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Old 03-11-2019, 10:07 PM
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Old 03-11-2019, 10:54 PM
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I'll just drop a couple more comments myself as I need to reach 10 posts as well.
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Old 03-13-2019, 06:47 AM
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Default Pictures of the cracks



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Old 03-13-2019, 06:49 AM
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Old 03-13-2019, 08:59 AM
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I'd be very suspect of those cracks. As I said, I had one. Looks to Me that someone ran Silicone Sealer around the Bell Housing to seal a leak. If so I'd bet the Transom is at least wet. The Thru Bolts in mine were almost corroded away and in that case the Bell housing is not tight to the Transom which can cause a leak.Again check the Stringers where the Engine mounts are, I'd be surprised if there wasn't some Rot there.
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Last edited by Lone Ranger; 03-13-2019 at 10:40 AM.
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