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Old 05-18-2013, 12:49 PM
XavierSPL XavierSPL is offline
TT Enthusiast
Join Date: May 2013
Boat: 89 Mastercraft Prostar 190
Location: NH
Posts: 107
88 Prostar Revival!

Hi All,

I'll use this first post to introduce myself as well as give a back story on my new boat (and yes, I'll of course provide the obligatory pics )

As for myself, long time tinkerer with all things motorized, I'm fairly mechanically inclined and rarely hit a wall that I can't figure out with projects like this (albeit often with the help of forum members on sites like this ) My biggest disadvantage is that I don't have heavy duty tools or ideal work space, never stopped me, but has often slowed me down.. While I'm good with things like cars and motorcycles I never owned a boat until last year so haven't had a lot of experience working on them.. I've never done internal engine work on anything but a motorcycle beyond carb rebuilds either, so while I'm fairly good - when it comes to anything that's proprietary to boats, I'll likely need help.. Last spring I managed to figure out how to pull an outdrive, do water pump impeller, bellows, shift cable, starter etc.. And while we had fun last year with the Searay I/O, last week I discovered a crack in the block due to not properly winterizing. (tried but the new starter failed and prevented me from being able to suck up enough antifreeze into the engine.)
So last week I found my new boat - an 88 Prostar 190. Old school Prostars and Nautiques have always been my fav boats - today all newer boats look the same, there's something about the character these older boats had that I always preferred but the Prostars with the jetfighter windshields have always been my fav.. I found this gem on craigslist for a steal due to the fact that the previous owner believes the block is cracked somewhere due to not winterizing. It has 450 hours and lived it's life in a garage - so while it does need some vinyl work on the top sections, it is remarkably solid otherwise. The engine is very clean and appears to have been well maintained. I cannot find any trace of an external crack on the block but there is water in the oil and there are 2 freeze plugs that are missing. I do see faint traces of rust stains at the heads. I figure, best case - maybe there's a small chance there's a blown headgasket - otherwise I'm assuming an engine swap is in order.
I'll add some pictures of the engine later today, I noticed yesterday there's a 1:5 velvet drive tranny!!
So as of now, the plan is this:
Attempted to repair the crack on my SeaRay (tons and tons of prep and JB Weld) - whether or not it works, I'll be selling it to fund the repairs on the Mastercraft. I'll know by tomorrow afternoon if the repair will hold. I'll tear the heads off the new boat and take a peek prior to considering it scrapped. If replacing, I've been looking at Marine long block 351Ws on Ebay for around $1500. Is the rotation standard on these boats?
Lastly, best I can deduct, I think this boat has been out of the water for up to 5 years - is there anything I should consider a must to replace? I'm hoping to reuse as many of external engine components as possible. Any tips advice etc anyone can offer is appreciated. I'll add interior engine pics later.
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Last edited by XavierSPL; 05-18-2013 at 07:29 PM.
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