1986 300 weekender

duckhead69

Member
Jun 11, 2010
163
michigan lake Erie
Boat Info
1980 Bertram
1986 Rinker2100
2006 Nova
1989 215 sundowner
1986 300 weekender lowrance HD-5
Engines
350 chevy inboards velvet drives
I am thinking of buying a 1986 300 weekender .After having it serveyed he told me it had some water dammage . 1 spot back bye the transom were the anoide comes thru the other one is under the water pump area. Is there a product out there I can drill holes in the inside of the boat but not all the way thru and pour or eject a epoxy ,resign or somthing. I am unsure how bad it really is yet. It did peg the meter in these areas and a hollow sound to the tap of a hammer. I do have alot of experiece with glass work. But realy not looking forward to ripping it all out. So do I have to rip it all out or is there a solution. Stringers are in good shape bulk heads and deck surprisingly good.

Thanks for any help Marty
 
I used to own one of these. Bought it brand new and owned it for 7 years. The next owner ended up replacing the transom and did do some stringer work too. He did inject the stringer with epoxy after removing the engines and lots of rotted wood. And it passed a survey. Most of these older boats have lots of issues. Given a good renovation plan, they can be repaired. It is lots of work and expensive if you have it done.
 
sbw 1 do you have any idea when Sea Ray started building boats that weren’t so prone to rot? You really need to change the season in your signature with a little green and blue the grey and white is kind of depressing..:lol:
 
I believe the mid to late 90s boats had less rot. My 93 passed a survey in 2004 with flying colors. However, it was expensive to own because the hull joint leaks could never be repaired in a lasting way. I ended up replacing a major section of the headliner after repairing the leaky v-berth area. I sold it to the dealer when I bought the Tiara.
 
You really need to change the season in your signature with a little green and blue the grey and white is kind of depressing..:lol:

We enjoy the four seasons of Michigan. This time of the year we get two of them for the price of one. :)-)
 
We enjoy the four seasons of Michigan. This time of the year we get two of them for the price of one. :)-)

Lake is your weather maker isn't it? I'm about 1hr west of the lake so it doesn’t affect us much. I think when I get done with this boat I will look for a Formula PC a little more expensive but I think built better.
 
Lake is your weather maker isn't it? I'm about 1hr west of the lake so it doesn’t affect us much. I think when I get done with this boat I will look for a Formula PC a little more expensive but I think built better.

Yes, Lake Michigan has a major effect on us. We have warm Falls well into December. Lots of snow January, even into April. Last week end it was pushing 90 degrees in Grand Rapids and we enjoyed 70 degree and sunshine.

The Formula PCs are nice boats. We were on a cocktail cruise two weeks ago on a friend's 41. It has nice Cummins engines and goes through Lake Michigan chop like there is no tomorrow.
 
Check out invisions boat works web site ,they are in zilwaukee michigan .The company started because the owner inherited a boat that needed transom and strtinger repairs ,he was an engineer before he started doing these repairs.
 
These boats have an excellent reputation. Many are still on the water. They are not prone to rot. Sometimes where the swim platform support bolts go into the transom, water can get in and cause rot. It is not that bad a repair. Cut out and replace fiberglass and epoxy. I don't know of any anodes in the transom. I can't help you with the waterpump. IO's were more common on these.
 
These boats have an excellent reputation. Many are still on the water. They are not prone to rot. Sometimes where the swim platform support bolts go into the transom, water can get in and cause rot. It is not that bad a repair. Cut out and replace fiberglass and epoxy. I don't know of any anodes in the transom. I can't help you with the waterpump. IO's were more common on these.


I believe the 300 Weekenders were Inboards only. Sundancers were IO's. They most likely had a transom anode right smack in the middle under the water line which use a couple of through bolts that can leak if spun and not re-bedded.

A fellow boater bought an 86 and the surveyor missed wet stringers. Lucky for him, the surveyor stepped up and paid for both engines to be removed and the stringers replaced in the ER.
 
Thanks for all the feed back. I did buy the boat and i am sure I will be happy with it. the rot is not that bad .gonna run it this year and do it over the winter.

thnks Marty
 
Git Rot is a penatrating epoxy that is supposed to soak in & strengthen rotten wood but not sure how effective it is.
 
Git-Rot is basically no different than any other epoxy, just a little thinner viscosity. You can heat other epoxies such as West System to reduce their viscosity as well, and in larger applications will be much less expensive.

ANY epoxy requires dry wood to be effective to cure properly. Having been through many, many gallons of West restoring a '72 Chris my experience is that epoxy injection will work only for very small areas that can be completely dried-out.

If the location of the area in need of repair is conducive, it's best both in terms of cost and time, as well as the long-term effectiveness of the repair, to just cut out the water/rot saturated area and replace it. Rot is extremely difficult to get rid of any other way. If there's a single rot spore left- six months, or a year later it WILL be back.

Since your area is below the waterline, and accessible from the outside of the hull, I would cut out the outer skin and coring, leaving the inner skin intact and replace the plywood core and glass it back over. Be sure to cut out an area large enough to get you into completely dry wood all the way around. It's an inboard, so the transom isn't structural as it would be in an I/O so the repair is not as critical.

I'm a bit surprised that there's plywood in your transom core given that it's an inboard (mine is solid glass), perhaps because they offered an I/O version as well and didn't change the transom construction...

West System has a ton of good information online related to all types of epoxy repairs. Good luck.
 

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