Classic AquaSport
Aquasport Model Rebuilds, Mods, Updates and Refreshes => Osprey Style Hull Rebuilds => 165/170/175 Rebuilds => Topic started by: Mwar410 on April 06, 2019, 08:30:51 AM
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Picked this 170 up a few weeks ago, didn't care much about the condition because I figured it would be getting redone anyway. Transom top has been "drilled and filled" in the past, but now has a crack along the outer skin. There's also a soft spot behind the fuel tank hatch to the stern.
We started stripping all the rails and hardware off, all rigging is gone, and getting ready to see how we'll get her to float with a jackplate and small 90 2 stroke on it.
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Mike when you take pics with your cell phone turn the phone so it is horizontal with the camera to the left, then they'll show up correctly here. Also, instead of attaching the pics, use your free gallery here (upload to "member gallery") - follow these instructions
http://classicaquasport.com/smf/index.php?topic=12725.0
Attachments are size limited but when you upload the pics to your gallery there is no size limit.
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Thanks Rick
I have a bunch downloaded in my gallery, but still trying to figure out how to navigate this site with iOS. I guess I'll have to retake some current pics with the camera horizontal.
Motor and jackplate are installed (well bolted on) and maybe I'll get a chance to splash it tomorrow afternoon to see how it sits and play with the COG.
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If they are in your gallery they can be turned using the tools in the gallery. I can't help you with iOS unfortunately.
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I rotated all the pics in your gallery. There are tools to the right when you look at a picture - one is "edit picture". Click that and there are rotate and other tools available. Once you rotate CW, for example, you must click "submit changes" at the bottom left or the rotate will not take place.
Now if you want to add more pics in your posts, follow the instructions in the link I provided earlier.
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Figured it out, I think.
(http://www.classicaquasport.com/gallery/data/500/IMG_20921.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18243&title=img-20921&cat=500)
(http://www.classicaquasport.com/gallery/data/500/IMG_20932.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18244&title=img-20932&cat=500)
(http://www.classicaquasport.com/gallery/data/500/57619184487_359B53E4-96E0-4E8F-AD84-1D2832C8BC55.JPG) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18248&title=57619184487-359b53e4-96e0-4e8f-ad84-1d2832c8bc55&cat=500)
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Started messing with console, trying to keep it as simple as can be.
(http://www.classicaquasport.com/gallery/data/500/IMG_2118.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18254&title=img-2118&cat=500)
(http://www.classicaquasport.com/gallery/data/500/IMG_2117.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18253&title=img-2117&cat=500)
(http://www.classicaquasport.com/gallery/data/500/IMG_2119.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18255&title=img-2119&cat=500)
New wheel will be smaller, can sit on the cooler and still have plenty of visibility.
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Gives you a great model for how to build the addition.
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With a little more fitting, I'm in hopes it can become the mold.
Doesn't look like I'll get to see how it floats, 7" of snow forecasted, it'll have to wait until after vacation.
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(http://www.classicaquasport.com/gallery/data/500/thumbs/IMG_22302.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18301&title=img-22302&cat=500)
Finally got some decent weather to see how she'll float with the 12" jackplate on it. I put 110 lbs on top of the fuel area, 77 lbs for 1/2 tank of fuel and 33 for hydro pump and rigging, then started with 1 starting battery. That's where it sits, about 1" above the bottom of the scuppers.
Added 2 house batteries and it went down to 1/2".
Then conveniently added 240 (or so) lbs to the stern and it was at 3 1/2"-4" above the bottom of scuppers.
I don't think that's too bad from what I've been reading on here. I plan on putting a 25" transom in and replacing the floor ( soft spot aft deck) so the scuppers can certainly be raised a few inches. Add A few pig pong balls and hopefully it'll be okay.
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Been juggling around a few ideas about this rebuild. Transom isn't in as bad shape as I thought so I'm going to do a quick repair and run it all summer the way it is. I'll throw a 5" jackplate on it to see how I like it.
Fuel tank
As I was cleaning up the boat, I decided to remove the foam from the top of the fuel tank and check all the hoses. Slight hint of gas odor from around the filler and vent, hoping no big deal since they'll be replaced. Of course the foam has some moisture in it down along the tank, IS it best to remove the foam or will a few well placed holes help with draining?? The tank was stored full of fuel and was only drained last year, visual inspection didn't look bad for the original tank, so I'd like not to mess with it now (plan on rebuild this winter).
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Is it an aluminum tank? I think in '78 they still used aluminum. If there was foam against the tank, that's not a good thing and causes pitting that will eventually cause leakage.
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But of course it's aluminum :embar: and its foamed all around! What's the best wa to test it for leaks? Maybe a pressure gauge? A few lbs of air would certainly find any potential leaks The top doesn't look bad if thats any indication of the rest of it.
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The only way to know for sure is to pull the tank and look it over.
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Unfortunately a foamed in tank is not a good thing. The factory did not foam them in. Foam will hold moisture against the tank and over time cause pitting. There should be a data plate on the tank with the date of build capacity etc. Personally I'd dig that sucker out.
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I grabbed another tank yesterday (poly), if I'm going to remove it for inspection might as well replace it.
Couldn't really make out much on the plate, maybe Florida Tank manufacturer? I'll get a pic later to see for sure. Looks original though, so maybe someone thought it was a great idea to foam it.
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Make sure you have 2% growth all around the poly tank because it will grow when it is holding gas (something molecular) and stay the new size.
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Finally got 1/4 of a day with no rain ( we'll light), to try and remove the fuel tank. After a few test spots I feel the tank will be in good shape, so I'm thinking it doesn't need to be removed.
(http://www.classicaquasport.com/gallery/data/500/IMG_2301.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18405&title=fuel-tank&cat=500)
There's a green coating on the tank
(http://www.classicaquasport.com/gallery/data/500/IMG_23021.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18406&title=coating-on-tank&cat=500)
And in the few spots I dug out it looks pretty good ( new)
(http://www.classicaquasport.com/gallery/data/500/IMG_23031.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18407&title=side-of-tank&cat=500)
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The top looks ok. My advise is you pull the tank, clean all the foam off it and get a good look at the bottom. If it is really ok (be honest), just change the way you tie the tank down. Here is a link to one type of install - main thing is keep air flow around the tank - https://www.yachtsurvey.com/fueltank.htm
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I'm with Rickk...pull the tank. And if you plan on keeping the boat, once the tank is pulled have it pressure tested to ensure no leaks. Remember, your standing on a bomb....no short cutting this job, imo.
I replaced my tank last year. Reinstalled using modified pasco method. Find description here:
https://classicaquasport.com/smf/index.php?topic=14273.msg141575#msg141575
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I was hoping to get away with just pressure testing it for now. Raised transom, floor replacement and liner removal coming this fall/winter, really didnt want to do it twice.
Tank is on hold now till every thing else is completed, hard to get anything done with rain every day/other.
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It’s easy enough to pressure test a tank. Just plug the fill and either the vent or fuel fitting; rig some kind of adapter from the remaining fitting to compressor or pump. Since you only need 3-5 PSI, a bicycle pump works great. Pressurize tank to 3-5 PSI and brush or spray tank with soapy water. Look for bubbles paying particular attention to fittings and any visible corrosion. Bubbles=Leak
I’m in the fix it once; fix it right camp, but if it checks out, there’s no reason you couldn’t get a season out of it. Just keep your eye and nose on the tank. If you can get floor, transom and liner done in a winter, my hat’s off to you. I’m at year three on my CCP rebuild.
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I've got a pressure gauge I was planning to hook up, figured 5lbs of air should tell you of any problems or soon to be problems pretty quick.
We've got some long winters up here, plenty of time to work.
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Where in Downeast Maine. I'm outside Calais, just getting started on a 19-1...
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I've got a pressure gauge I was planning to hook up, figured 5lbs of air should tell you of any problems or soon to be problems pretty quick.
What will tell you the problem is when you fill it up and then hit some choppy water. The shifting of a fully loaded tank will break the corrosion under the straps and foam loose. She'll leak then. Not trying to scare you but when addressing the needs of these old (Hialeah hull) Aquasports, tank replacement is first on the list.
Good luck. :thumright:
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Where in Downeast Maine. I'm outside Calais, just getting started on a 19-1...
Jonesport, but I’m actually sitting at a softball game in Calais right now. The 19-1 will probably be what I end up with, not sure the 17 will do.
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Right now it feels like 2' 1" more work...
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https://maine.craigslist.org/boa/d/salsbury-cove-19-ft-aqua-sport/6902894053.html. right up the road...
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There is a 191 Osprey for someone - a rare hull.
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I was thinking about going to look at that the other day. There's one here that's been sitting behind the trap pile for years, that'll probably be the next one I do.
Been piling up parts for the 170, all new wiring, rigging, lights and gauges. Replaced a soft spot on the rear floor, cut out for new rear hatch and repaired transom. The deck will be just painted to cover the repairs with the transom being gel coated
I'm going to run a bilge pump (1100) on the rear deck or in the trough, just as a precaution For when water comes over the transom and the ball scuppers can't keep up with it. Still considering putting a small one down in the bilge.
Hopefully a couple of weeks and it'll be ready for the water, it won't be long before the Stripers start running.
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it's been slow going on my own projects lately, but I've got a bit of work done.
Today might be a chance to water test it, just a few connections to make and probably do a quick service on the lower.
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(http://www.classicaquasport.com/gallery/data/500/IMG_2403.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18827&title=img-2403&cat=500)
(http://www.classicaquasport.com/gallery/data/500/IMG_2415.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18828&title=img-2415&cat=500)
(http://www.classicaquasport.com/gallery/data/500/IMG_2422.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18830&title=img-2422&cat=500)
(http://www.classicaquasport.com/gallery/data/500/IMG_2421.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18829&title=img-2421&cat=500)
(http://www.classicaquasport.com/gallery/data/500/IMG_24251.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18831&title=img-24251&cat=500)
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I'm guessin" this wasn't the "water test" you had in mind.
:thumright:
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It looks very nice - what did you have to do on the transom? Looks new.
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Capt Bob, it seems like it's been raining here for months, so that water test has already been completed. Actually found about 1 gal of water in the fuel tank today to start (delay) the water test. Good thing I only put 7 gals of non ethanol in the tank this morning. Pump the tank, purge the fuel system and change the filter. :embar:. Only thing I can figure is it got in the the tank while I was waiting to do the new sending unit and I didn't pick up on it.
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nope not a new transom yet, just quick repair. Top was cracking and it was wet around the garboard plug. It also appeared that the motor wasn't hung level. Drilled out 3" around all holes and dried it out, layed a few layers of mat inside and out.
(http://www.classicaquasport.com/gallery/data/500/IMG_2407.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18847&title=img-2407&cat=500)
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Still "water testing", been running it for 4 days or so. Playing with wheels trying to dial it in, before I purchase a stainless. It had an old Michigan wheel on it that I can't read what pitch it is, but I'm assuming 15. Tried a 19 last night and it ran nice but only gave me about 3/4 throttle (4600).
So I'm pretty happy with the ride but it's been relatively smooth out just some rollers to speak Of
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(http://www.classicaquasport.com/gallery/data/500/Resized95201907079518352100195671.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=18852&title=resized95201907079518352100195671&cat=500)
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I must have played with 6 different wheels, I think the Yamaha k series 19p runs the best. WOT is tickling 40 at 5800. With a nice cruise speed around 25- 30 at 3800-4 .
All these prop changes get quite confusing.
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Well after running this all Striper season Im quite impressed and was able to figure out what I'd change and keep.
First off, I'm really kicking myself for not taking 6" out of the console's width. Hopefully floor to hull deck (no liner) will help with this
Definitely the addition of spray rails
Larger bow deck with anchor locker
Raising the transom at least to 25", can't really backup with out it coming over stern.
Season came to an abrupt end Sunday while searching for new fishing spots
(http://www.classicaquasport.com/gallery/data/500/IMG_27141.jpg) (http://www.classicaquasport.com/gallery/showphoto.php?photo=19287&title=img-27141&cat=500)
Time to winterize the motor and put it on the stand for the year. Attempt to locate a lower unit.
I could throw a 115 on it but Im thinking about getting an early start on the rebuild and I'm not crazy about putting on the 115.
Big front hatch needs to be re-cored as well as the fuel tank cover, transom is going to be raised/replaced and assuming the stringers should be done. So full rebuild seems to be on order.
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:oops2:
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Ouch !
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Yeah I'm quite lucky I was able to make it back to the ramp under its own power. Now searching for a lower unit, nothing around the shop and no luck locally, not even a 4 stroke case.
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Now searching for a lower unit, nothing around the shop and no luck locally, not even a 4 stroke case.
You mentioned wintering so I reckon you live in northeast. If you broaden the LU search to include FL you'll have quicker luck. I always see LU on craigslist in Tampa Bay area. Though if you do purchase LU from remote location I'd do so using ebay or used engine dealer for the purchase protection.
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I'm definitely a little skeptical about buying sight unseen. My current CL searches do include Tampa and Sarasota, as I'm down there often.
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Well after off and on searching for the winter and spring, no luck in locating a lower unit for the 90. The $700 rebuilds became $1200 units shipped! So it looks like it might be the 115 going on it.
? The big issue is it’s about 100 pounds heavier. What should I be expecting to have to do so it rides right?
I have 2 batteries up under the console seat, a 27 deep cycle and 24 starting (about 140#). I usually fish with 2 anchors, one in the center casting deck locker and the main in a basket at the stern. I could move both forward and add more chain. That’s about all I can think of for adding some bow weight.
? Would the addition of smart tabs offset any foreseen ride issues?
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Sorry to hear that. At rest the boat will sit deeper in the water in the aft and your scuppers will be more under water especially if you walk to the aft. As for ride I think it will be fine. You might investigate a Doel-fin to lift the back of the boat up and keeping you on plane at lower speed.
I guess my big concern would be when the boat is on the mooring and it rains, the scuppers will be under so it won't self bail.
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Are you back in Maine? There's someone advertising 2 90 Yam lower units on NH Craigslist. https://nh.craigslist.org/bpo/d/plaistow-2-yamaha-90-lower-units-may/7129031338.html
Not sure if you're up for travel and unknown condition...
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Thanks, just messaged him. For that price I’d be there in the morning! If not we’re in the process of building a four stroke case for it.
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Ill cross my fingers for ya.
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I shot down there this morning and grabbed 2 cases (lower units). One has a stuck carrier and is probably useless, unless I split it and take the gears and driveshaft out of it. The other is promising, between mine and this one I should be able to build a nice lower unit. Amazingly mine was still holding oil
Thanks for the heads up :thumleft:
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No problem, sooner or later, Craigslist usually comes through. I was eying a 120 Johnson for a lower unit, guy wants $100 for the whole motor with a blown piston. He swears it's a 25", but it looks like a 20" which is what I need if I want a spare laying around. Mine is fine as far as I know... have only heard it run, never seen it in gear.
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Umecheme, that guy is a buddy of mine and lives just down island of me (if it’s the one I’m thinking about in Harpswell). I can take a look next time I am over there. I was out on the water with him today.
Honestly he would probably GIVE you the motor if he knew it was going to a good home haha.
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Came off his Sea Ox 180 which says 25” per specs though
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Thanks! I won't lose sleep over it anymore.
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Well of course with 50 other need to do projects around the house, I had to tear into the stuck case. They broke and cut the prop shaft carrier and sliced the case where the oil seal is with a grinder. All to get the stuck carrier out??? I soaked it for a few hours and put al little heat to it a few times. Then put my old prop on it with a few hardwood shims under it and walked the nut to it with the driver. Pop! It’s out, some people’s kids. Now to the welder for a little Filling of the grinder cut and I have 2 useable cases, driveshafts, gears, and shift linkages. Might as well build 2 new lowers and have one on hand for anymore of that hard water I might find
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Awesome, glad they are going to come together!
I grew up in coastal NC and have only been in Maine a few years, so these weird things called “rocks” still scare the hell out of me! At least now you have a spare.
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Well finally got some time to get the boat up and running. After working on the lower unit for most of the day, I finally got a sea trial in this afternoon at 4:30, what a long day. Now I know my way through a case pretty good, had it off and on about 7 times. Finally got all the same era parts in one case and the shifting adjusted properly.
Coffin lid, center and starboard cast deck lids are re-cored and it’s ready to fish another season.
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Good for you, congrats.
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After a pretty wet ride home last Sunday,SW gusting 20, I decided it was time to put the spray rails on.
(https://classicaquasport.com/gallery/data/500/3F556C71-19B4-481C-A5D0-89C1B906F30C.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=20650&title=starboard-spray-rail&cat=500)
Not crazy about the look now but man what a dry ride! Hammered it through some various wakes and even when I plowed into the bottom of one, no spray inside.
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Let us know how they work in the same weather situation.
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After years of contemplation, I finally put the 115 on it.
(https://classicaquasport.com/gallery/data/500/F99F6BFD-D359-48BB-B897-8D0173044FC3.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=21853&title=f99f6bfd-d359-48bb-b897-8d0173044fc3&cat=500)
Not sure about how it’s going to work out but I figured I’d try it.
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Also got a new pup
(https://classicaquasport.com/gallery/data/500/7432C663-7E3A-4C08-AD3B-DF17AF3A4F75.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=21854&title=7432c663-7e3a-4c08-ad3b-df17af3a4f75&cat=500)
Which meant new decking was needed. Then it started to snowball. Deck and liner prepped and painted for new Seadek like stuff, new hardware, shim the console with Starboard spacer, new rod holders, redo the bright work.....
(https://classicaquasport.com/gallery/data/500/87EBDCDB-776D-4494-9BDA-6E19D9FBF3F9.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=21850&title=87ebdcdb-776d-4494-9bda-6e19d9fbf3f9&cat=500)
(https://classicaquasport.com/gallery/data/500/B346B5FA-0233-4D04-B7AC-50804CB4D2E9.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=21851&title=rod-holder&cat=500)
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I’m sure you’ll love it....I’ve got the same motor hung on my ‘76. That Yam 2stroke looks clean or at least the exterior does. What year? I’m curious how the hull will handle with those few added inches of setback.
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It’s an ‘03. I’ve been worried about the setback but it’s only temporary until my 90 is back together. Hopefully I’ll have some time this week to water test it and figure out what wheel to run. It’s still sitting up about 5” where the 90 has been running.
(https://classicaquasport.com/gallery/data/500/B7ABF907-9876-4E27-A859-DC04B36E8404.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=21852&title=b7abf907-9876-4e27-a859-dc04b36e8404&cat=500)
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Getting closer to water test. Did the lower unit, changed plugs, flushed carbs, put muffs on it and…. No crank. Parts on order and it’s another day till it’ll see the water.
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For you guys that are running 115’s, what kinda of pitch are you turning?
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When I bought my rig the previous owner had a SS 4 blade 21" installed...slow hole-shot and topped out at 4500 rpms. Trialed a SS 3 blade 17" which resulted in >5500 rpms. Added 1 more inch pitch and went with a SS 3 blade Quicksilver 18"....sweet spot.
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I started with an aluminum 21, topped out at 4800. I think my tach is a little wonky so I swapped it out last night with a new one. Didn’t really notice any bow rise and hit 43 mph in a hurry. I’ll play with it again this morning, maybe try a SS 4 blade 20 that’s been laying around.
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Still messing around with the 21p, and motor height. But it’s running solid and not really worth fine tuning it much more.
5 1/2” Setback hasn’t had any negative ride that I noticed.
Scuppers are almost completely under ( about 1/4” more) and water just about stays in the well without plugs in.
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Still messing around with the 21p, and motor height. But it’s running solid and not really worth fine tuning it much more.
5 1/2” Setback hasn’t had any negative ride that I noticed.
Scuppers are almost completely under ( about 1/4” more) and water just about stays in the well without plugs in.
My guess is an 18” pitch will allow the engine to reach top end spec rpm same as mine, but even if you’re somewhere btwn 5000-5500 rpm, the mph will remain same....maybe +1 mph at best. So what I’m saying is if you reach 5200-5300 then you’re pitch is dialed in...I wouldn’t drop another inch pitch for +200 rpms cause you won’t get more mph.
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Before I dropped the motor an inch, I was turning almost 5400. Hard to be sure when exactly it blew out with trim going 43mph. Now it’s turning 4800, I’ll bring it up a 1/2” and call it good. Don’t need to be running wot anyway, cruising 32mph @4000rpm is plenty. The pup thinks 25 at 3200 is just fine.
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(https://classicaquasport.com/gallery/data/500/0E6914E5-2D80-484D-839A-B75313FA9637.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=21993&title=0e6914e5-2d80-484d-839a-b75313fa9637&cat=500)
Been too busy for much of anything, but managed to almost finish putting the foam decking down.
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Great picture.
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Been too busy for much of anything, but managed to almost finish putting the foam decking down.
How are you doing with the foam decking … working out as expected/hoped? Considering doing the same as part of my rebuild but have seen drastically opposed feedback. Tx
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Yeah Rick I thought it was, those Sunday morning runs are a favorite. Like a lake and pretty deceiving, we’re cruising about 27mph
The decking is the cheap EBay stuf, so I figured I’d try it out for about $150. Of course 1 miss cut and I was into it for another sheet. Seems to be holding up good, so far… I didn’t really put any effort into installing it, as in priming deck with contact cement or sealing the edges with Lifecaulk, as I was expecting to have to replace it in the future. It does hold the dirt from your shoes pretty good but I rinse down with a small pressure washer after every trip and it cleans right up. The next time I’ll order it cut for the boat, I’m just not set up for cutting foam unless I get a CNC router. :roll:
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(https://classicaquasport.com/gallery/data/500/37016816-E2D5-4C53-91F3-AD4583FCA221.jpeg) (https://classicaquasport.com/gallery/showphoto.php?photo=23106&title=37016816-e2d5-4c53-91f3-ad4583fca221&cat=500)
It’s been a while, work has been crazy busy. But finally found some time off so I decided a new Xmas present for the squirt and a road trip was in order. Maybe some Fla sun will help get the snow off the deck