ClassicMako Owners Club, Inc.
ClassicMako Owners Club, Inc.
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 ClassicMako.com Forums
 Mako Projects
 1986 20c Rehab
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

fortygrip
Member

USA
30 Posts

Posted - 07/25/2017 :  09:43:49  Show Profile  Reply with Quote
Decided it was time to start a new thread of my adventures. Around a year ago I bought a 1986 20C with an 1995 Evinrude 150. This was to be a replacement for the 1971 17 Standard that i tore apart and decided not to finish. I told my wife that this wasn't a project boat. Of course I was wrong. Man do these things escalate quickly. All it takes is one blown motor and next thing you know you're into a full blown rehab project. Since the Evinrude is coming off and I'm replacing with a Yamaha I figured it was a good time to redo the rats nest of electrical throw up the previous owners had blessed me with. And since i was de-rigging I might as well pull the console off and clean out around the coffin lid. And since I was removing the console, I might as well pull up the coffin lid and inspect the tank. And since I pulled up the coffin lid and saw the horror that lied beneath, I might as well replace the tank and lines. Yeah, it happened that fast.

Pic of boat after I added leaning post and new bimini and before Evinrude went down.


Found a great deal on a 1983 20b with a 2003 Yamaha 150. Boat had been dropped by a marina and seperated the hull and cap. Took everything off I wanted and sold the hull. Here's a pic of the sisters.


Didn't think to take pictures of the de-rigging but here's one with Evinrude off the transom.




Coffin lid off




Nice channel in the foam to a drain in the back of coffin. Too bad the water never made it there, just soaked the foam below.


Found the t-shirt


Hole in top of tank


After digging all the foam out from around tank, it just wouldn't let go of bottom foam. Took forever, but after consulting some other fine folks on here I put a 4x4 across the gunnels and wrapped a ratchet strap around fill neck. Thank the lord the fill neck welding was strong. Put tension on and left overnight. Came back out the next day and used a pry bar under the mounting tabs and slowly it let loose. What a great feeling that is.




Foam under coffin was wet, I was able to dig out quite a bit thru holes but can't decide if i should cut coffin out. Is it worth it? I know i could reduce some extra weight and no better time to do it, but I'm not sure I want to deal with the hassle. Bravo2 0 and surfishjoe made it look easy. Any thoughts?

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150

Edited by - fortygrip on 07/25/2017 10:31:18

Sailor
Moderator

USA
10256 Posts

Posted - 07/25/2017 :  13:11:46  Show Profile  Visit Sailor's Homepage  Reply with Quote
good project going on, but the big question is what was on the t-shirt? Lots of rock-n-roll t-shirts have been found!

1978 Mako 25 - Blind Hog
1985 Mako 20c - sold
Mary Esther, FL
http://www.classicmako.com/forum/topic.asp?TOPIC_ID=42841

Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 07/25/2017 :  14:39:15  Show Profile  Reply with Quote
That is a good question. I think it started as a hanes undershirt, but now I've gotta go home and investigate deeper. Stay tuned!

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150
Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 07/26/2017 :  20:23:37  Show Profile  Reply with Quote
Looks like Saz's Milwaukee. Quick google search returned Saz's State House Restaurant. Pretty cool


Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150
Go to Top of Page

usgbds2004
New Member

19 Posts

Posted - 07/27/2017 :  06:24:23  Show Profile  Reply with Quote
Where are you at in lee county. I am out in lehigh and have been rebuilding a 1970 19 for around 3 years now.
Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 07/27/2017 :  09:03:39  Show Profile  Reply with Quote
I'm in Lehigh too. North end of Sunshine

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150
Go to Top of Page

Sailor
Moderator

USA
10256 Posts

Posted - 07/27/2017 :  14:07:22  Show Profile  Visit Sailor's Homepage  Reply with Quote
That's very interesting! I bet yours is the only one.

quote:
Originally posted by fortygrip

Looks like Saz's Milwaukee. Quick google search returned Saz's State House Restaurant. Pretty cool




1978 Mako 25 - Blind Hog
1985 Mako 20c - sold
Mary Esther, FL
http://www.classicmako.com/forum/topic.asp?TOPIC_ID=42841

Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 07/28/2017 :  18:35:35  Show Profile  Reply with Quote
Not a lot of progress the last week or so. Got the fuel lines out. Thank god Mako abandoned the aluminum elbows by the time my boat went to production. They came out nice and easy through the chase. About choked when i started pricing replacement hoses tho.
Think I've decided to remove coffin and dig out any wet foam. It might be more work but won't cost too much more to do and then I'll know for sure that it's good. I also figured with the coffin out I could add some backing plates under the deck where the t-top is going to mount. I ordered a half mask respirator, goggles and a tyvek suit for when the grinding begins.

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150
Go to Top of Page

Sailor
Moderator

USA
10256 Posts

Posted - 07/30/2017 :  10:58:55  Show Profile  Visit Sailor's Homepage  Reply with Quote
While you have everything apart I would replace the pie plates in the stern with a waterproof hatch.

1978 Mako 25 - Blind Hog
1985 Mako 20c - sold
Mary Esther, FL
http://www.classicmako.com/forum/topic.asp?TOPIC_ID=42841

Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 08/12/2017 :  23:16:25  Show Profile  Reply with Quote
Decided to cut coffin out. Measured down 3" from lip and used a 4.5" grinder with a metal cut off wheel. Worked great. Tried to get out in one piece but no luck. Cut down the middle and came out with no problems. Foam underneath was wet, but not as bad as i expected. Dug out everything with moisture and decided to tunnel forward to inspect the fish box drain. It does leak because foam around pipe was wet, but must not be too bad because only immediate foam around pipe is moist. I made it to connection at fish box and it's still intact. I only removed just enough foam to see pipe, but i plan on making tunnel bigger so I can go ahead and redo plumbing to eliminate the leak.



The drain pipe from forward fish box has a tee behind coffin that connects pipe at rear of coffin. No fitting at termination to coffin so pipe just flaps in breeze. Will add fitting to keep it inside hole before i close up. Mako got a little stingy on foam at rear of coffin. Just as well, less for me to remove when I build bulkhead to keep bilge water from moving forward.


That hose channel is a lovely thing.



For anyone else that decides to cut coffin out of a 20c, measure down at least 4" to clear this plywood backing strip that runs on port and starboard sides of coffin. Was a little harder than it needed to be to pop coffin free. On the plus side, when I go to put it back in I can just screw right in to strip to hold in place while fiberglassing.


Foam removed. Will let it dry out while I await supplies from US Composites. Gonna use 4lb foam to replace what was removed.




Another pic looking towards transom. Foam is so black it almost looks painted. That's the drain pipe you can see.



Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150

Edited by - fortygrip on 08/12/2017 23:43:56
Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 09/10/2017 :  10:03:16  Show Profile  Reply with Quote
Irma's coming. Got the boat anchored down as well as I can. Had to put the coffin back in place and re-attach the console.






Next 24 hours is gonna be rough. Good luck and god bless to anyone else in Florida.

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150
Go to Top of Page

73 Mako 20
Member

670 Posts

Posted - 09/10/2017 :  23:34:21  Show Profile  Reply with Quote
Hope you made it trough ok. I'm in Ft. Lauderdale and it wasn't to bad. My Mako is full of leaves but no damage.
Do have a big oak limb on the roof though.
Good Luck!

1982 17' Mitchell gone
1985 Mako 21 had 7 years
1951 15' Critchfield first rebuild 1986 with a 35hp tiller gone
1992 17 Maverick rebuilt in 2000 still have
1973 Mako 20 currently rebuilding

South Florida, Don
http://www.classicmako.com/forum/topic.asp?Topic_ID=37475

Go to Top of Page

surfishjoe
Member

USA
267 Posts

Posted - 09/13/2017 :  13:53:30  Show Profile  Visit surfishjoe's Homepage  Reply with Quote
How did you make out with Irma?


Margate NJ
1989 Mako 211
2009 Etec 200 HO
Go to Top of Page

Sailor
Moderator

USA
10256 Posts

Posted - 09/14/2017 :  08:48:20  Show Profile  Visit Sailor's Homepage  Reply with Quote
hopefully you guys made it through ok.

1978 Mako 25 - Blind Hog
1985 Mako 20c - sold
Mary Esther, FL
http://www.classicmako.com/forum/topic.asp?TOPIC_ID=42841

Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 09/14/2017 :  09:03:45  Show Profile  Reply with Quote
Made it thru with no damage! House, pool, boat and family made it thru unscathed. I honestly can't believe it. The center of the eye passed about 4 miles to the West of my house which put us in the NE quadrant of the storm - worst place to be. Sustained winds of around 110 mph. I could feel our house moving. So happy i anchored boat down in the fashion that i did. It didn't move and looks no worse for wear. I feel very fortunate.

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150
Go to Top of Page

2TDave
Member

162 Posts

Posted - 09/15/2017 :  19:59:12  Show Profile  Reply with Quote
That's awesome news Chris! That was a large storm and we felt it pretty good over here on the east coast although nothing like y'all.
Go to Top of Page

ippolim
New Member

23 Posts

Posted - 09/19/2017 :  21:01:37  Show Profile  Reply with Quote
I have the same hull as you. About 10 years ago I rewired the the entire boat, replaced the fuel tank, and repowered with a two stroke 150HP Yamaha. I wished I had cut the bottom of the coffin out as you did and checked the drain pipe from the front fish box and anchor locker. After the new tank was installed and foamed in I discovered the drain pipe had a leak. In my opinion it was a bad design running that length of rigid tubing instead of a flexible hose. Also the fact that it terminates inside the hull near the transom is not the best thing. If you use it as a fish box with ice it all ends up inside the hull. I connected mine through the transom with a ball valve but because of the leak it usually stays closed so that water does come in to the hull. Overall its a great boat for bay fishing and near shore fishing in the Gulf.

Were you able to determine where the actual leak was from the front fish box? At the fitting where it joins the front anchor locker, at the fish box itself or was the pipe cracked in the length from the fish box under the coffin box.

Valrico,FL
'86 Mako 20C
Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 09/20/2017 :  10:07:44  Show Profile  Reply with Quote
I did find the cause of the leak. The tee fitting under the fish box is cracked. Looks like the drain pipe was attached to the under side of the coffin with a steel pipe hanger originally and once the pipe hanger rusted and fell away the pipe was left to hang which caused stress on the fitting resulting in the crack. Terrible design for sure. It's not a hard fix except for all the additional foam I will have to dig out to give myself room to work.

Pic of fitting, the crack is right at seam where it goes vertical (looks like a black line).

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150
Go to Top of Page

fortygrip
Member

USA
30 Posts

Posted - 11/07/2017 :  14:53:28  Show Profile  Reply with Quote
Made some progress this weekend. Got enough foam dug out to give myself room to repair the broken drain tee. Cut the old out and cleaned to put new fittings on.





New assembly done.



Added a small bulkhead at rear of coffin to keep bilge water from moving forward into foam and help support drain pipe. Thanks to surfishjoe and bravo 2.0 for the idea. Bought a piece of "Foamular" insulation sheathing from Home Depot for the core. Easy to work with and cheap. First time working with fiberglass. Used 1708 biaxial to cover it. Let it cure then tabbed it in with more 1708. Filled in any gaps with CSM and lots of epoxy. I'm happy with it, especially since you can't see it from above .



Finished drain line assembly.







Next step will be to pour some water thru fish box drain and check for leaks, if all is well then I'll lower tongue of trailer and pour foam back in under fish box where drain tee was replaced.

Chris
Fort Myers,Fl
1986 Mako 20C
2003 Yamaha 150

Edited by - fortygrip on 11/08/2017 07:31:57
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
ClassicMako Owners Club, Inc. © Louisiana Web Host, LLC. Go To Top Of Page
This page was generated in 0.62 seconds. Powered By: Snitz Forums 2000 Version 3.4.07