Attention: Have only 1 page to see today

Author Topic: Tom's 1986 170 Rebuild  (Read 2954 times)

May 07, 2020, 01:42:11 PM
Reply #30

RickK

  • *****
  • Information Online
  • Administrator
  • Posts: 11065
Re: Tom's 1986 170 Rebuild
« Reply #30 on: May 07, 2020, 01:42:11 PM »
Good progress Wing!!
Rick
1971 "170" with 115 Johnson (It's usable but not 100% finished)

1992 230 Explorer with 250 Yamaha

May 07, 2020, 01:58:18 PM
Reply #31

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #31 on: May 07, 2020, 01:58:18 PM »
Thanks guys - this next week will be the last big push, getting the motor installed. Hopefully everything comes together without too many issues. I've never done full rigging for an outboard from scratch (switched from old Yamaha to newer Suzuki). May end up having some questions! As long as the main systems are working, I am going to splash next weekend to see if it floats. Wife and kids (and ME!) are antsy to get out on the water with weather FINALLY warming up a little.  I'll have a month or so to work the kinks out before the fish get here.

May 13, 2020, 09:17:49 AM
Reply #32

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #32 on: May 13, 2020, 09:17:49 AM »
Alright, time to humble myself and share my idiot moment.

When I poured the transom, the hull and liner panels naturally had the tendency to flex outwards a bit. My formwork was screwed to the edges along the top, so this was not an issue. When I placed the motor mount insert (like a piece of negative formwork to take up the space), I had the option to increase the overall thickness of the transom a bit. With the thought of increasing the flexural and shear strength of the transom where it needs it most, I made the insert 1/4" thicker than the transom was previously. All was well and I patted myself on the back.

Then I hung the motor. And realized that the tolerance between the Teleflex tube and the inner face of transom on the port side was far too close (much closer than the Yamaha was). The Teleflex arm hit the transom when extended (turning to starboard) - like 1/8" of interference.

Can I tell you how much it pained me to take a router to a brand new, glassed, painted, beautiful transom and rout a channel so the steering arm could extend? I thought this through for days and could not come up with another option.

I will sand, glass, fare, and paint eventually so it looks pretty... But not right now. It is in a non-structural part of the transom that was not even there previously (in the raised portion that I added) and I just want to dunk the boat in the water this weekend.

Anyway... moral of the story: if you consider increasing the thickness of your transom AT ALL, mind the Teleflex.

May 18, 2020, 09:56:04 AM
Reply #33

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #33 on: May 18, 2020, 09:56:04 AM »
Guys - it floats!







First launch was yesterday. I was absolutely blown away by how this hull handled. I was also flabbergasted to see that the hull floated a full 2" higher than the previous waterline/scumline. I hadn't planned on a bootstripe, but I think I will now so that my bottom paint line isn't super high. Apparently getting all of the soggy foam out worked wonders. The transom scuppers were fully above the waterline, even with 25 gallons of fuel and a full crew and gear (2 adults, 2 kids). Answers my question about the self-bailing!

Hit 32mph at 5900rpm in moderate chop... Prop is a little chewed up but I was waiting to see how my rpms were before getting a new one. I am thinking I will increase pitch a little bit and get the rpms down some, max is 6000 on the DT85.

Still have to put my hard top and windshield on, along with a couple minor tweaks. More photos to follow once I get it completely assembled. First voyage was a smashing success though.

May 18, 2020, 10:35:37 AM
Reply #34

mshugg

  • Information Offline
  • Master Rebuilder
  • Posts: 949
Re: Tom's 1986 170 Rebuild
« Reply #34 on: May 18, 2020, 10:35:37 AM »
Congratulations.  Another AS reclaims her glory! :weehee:

May 18, 2020, 06:19:08 PM
Reply #35

RickK

  • *****
  • Information Online
  • Administrator
  • Posts: 11065
Re: Tom's 1986 170 Rebuild
« Reply #35 on: May 18, 2020, 06:19:08 PM »
Great to see you on the water. Floats higher even with the 4 stroker on her - great. Congrats!
Rick
1971 "170" with 115 Johnson (It's usable but not 100% finished)

1992 230 Explorer with 250 Yamaha

May 19, 2020, 08:20:18 AM
Reply #36

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #36 on: May 19, 2020, 08:20:18 AM »
Thanks guys! Yeah, it was a really good day. And many more to follow. Still some work to do but she’s close.

May 20, 2020, 09:47:45 AM
Reply #37

sowers22

  • Information Offline
  • Posts: 11
Re: Tom's 1986 170 Rebuild
« Reply #37 on: May 20, 2020, 09:47:45 AM »
Awesome I own the same setup with a 95 DT85. Maybe once i get all the wet foam and wood out she will float much higher as well.
Good work!
$ 1976 Aquasport 170 $

May 20, 2020, 07:16:00 PM
Reply #38

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #38 on: May 20, 2020, 07:16:00 PM »
I am a huge fan of the DT85... tough to find a lighter power plant! I would add at least 150 pounds to switch to 4 stroke. Good luck on your build!

May 26, 2020, 09:03:35 AM
Reply #39

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #39 on: May 26, 2020, 09:03:35 AM »
Almost there...



Got the hard top installed, nav lights and vhf wired, and installed kicker. Wraparound vinyl windshield is on the way for the T top frame. Caught first striper of the season last night, so it begins!



Just have to finish bottom paint and boot stripe when I have time, then she'll be mostly good to go.

May 26, 2020, 09:32:22 AM
Reply #40

RickK

  • *****
  • Information Online
  • Administrator
  • Posts: 11065
Re: Tom's 1986 170 Rebuild
« Reply #40 on: May 26, 2020, 09:32:22 AM »
Looking good - congrats.
Rick
1971 "170" with 115 Johnson (It's usable but not 100% finished)

1992 230 Explorer with 250 Yamaha

May 26, 2020, 03:30:06 PM
Reply #41

Mwar410

  • Information Offline
  • Posts: 135
Re: Tom's 1986 170 Rebuild
« Reply #41 on: May 26, 2020, 03:30:06 PM »
Nice pics of the boat, but where’s the ones of the fish??? Hopefully by the time the head down here I’ll have my engine issues figured out.
1978 "170" 91' Yamaha 90hp
1973 “196” (just getting started)
Mike

May 27, 2020, 08:46:59 AM
Reply #42

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #42 on: May 27, 2020, 08:46:59 AM »
Ha, we will get the next one for sure! It was not quite a keeper (probably 24" range), and in all the excitement with kids squealing, etc. we didn't grab a photo.

Mwar - been following your build and hoping you get your engine issues resolved! It is FINALLY warm enough to call it spring down here, hopefully heading your way too.

June 30, 2020, 04:11:35 PM
Reply #43

wingnut

  • Information Offline
  • Posts: 151
Re: Tom's 1986 170 Rebuild
« Reply #43 on: June 30, 2020, 04:11:35 PM »
So, we have been using the boat at least 2x a week and it's amazing. Hauling our lobster traps and getting a bunch of keepers too! Summer is in full swing and life is good.

Only issue I've had so far is water intrusion. Of the fresh variety. For a while I couldn't figure out where it was coming from. I have everything bedded really well in gunwales and new deck, and this was a pretty large quantity in the bilge (probably a few gallons in the bilge after a modest rain, with the boat sitting in driveway). So I traced possible paths the water could be taking, and arrived here:



In the rod holder cutouts between the liner and hull. I just never even peeked in there, assuming it was glassed and not an issue. However, it's caulked (and cracked), and is definitely the source of intrusion.

My question is - has anybody run into this before, and if so, have you had any success sealing? My guess is it flexes too much to really hold an epoxy fix, but I'm not sure how 3M 4000 will hold up either.

July 01, 2020, 05:47:22 AM
Reply #44

Mwar410

  • Information Offline
  • Posts: 135
Re: Tom's 1986 170 Rebuild
« Reply #44 on: July 01, 2020, 05:47:22 AM »
Mine leaks there also but the repair seems futile. It’s a difficult area to properly access,clean, and caulk, so I just figure it rinses the bilge out. I do have a bilge pump and the garboard plug  is always pulled when on the trailer so it’s kinda a none issue.
If you can access the rear section some Life Caulk would certainly work.
1978 "170" 91' Yamaha 90hp
1973 “196” (just getting started)
Mike

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal