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Author Topic: finished my 175  (Read 847 times)

November 08, 2019, 06:33:35 PM
Read 847 times

hudsport

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finished my 175
« on: November 08, 2019, 06:33:35 PM »
I painted my favorite boat color, 3 coats of total boats Seafoam Green.

November 08, 2019, 08:59:51 PM
Reply #1

RickK

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Re: finished my 175
« Reply #1 on: November 08, 2019, 08:59:51 PM »
Very nice!! Congrats, now go enjoy it...
Rick
1971 "170" with 115 Johnson (Rebuilding it now)

1992 230 Explorer with 250 Yamaha

November 09, 2019, 12:29:01 PM
Reply #2

hudsport

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Re: finished my 175
« Reply #2 on: November 09, 2019, 12:29:01 PM »
thanks Rick , i plan on it  :woohoo:

November 15, 2019, 09:40:13 AM
Reply #3

CTsalt12

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Re: finished my 175
« Reply #3 on: November 15, 2019, 09:40:13 AM »
Beautiful. 

Where did you have that leaning post made?  I'll be getting one this winter.

Also-what kind of performance numbers do you get with the ETec 90?
Jimbo
1989 175 Osprey

November 15, 2019, 01:34:40 PM
Reply #4

hudsport

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Re: finished my 175
« Reply #4 on: November 15, 2019, 01:34:40 PM »
Thanks, i had the leaning post made here in Tampa Florida area he advertises on occasion on Craigslist (Tampa Bay area) . The Etec i bought with 230 hours on it from a guy up-sizing to125 HP ,  i added a atlas jack plate and s/s prop and love it! The engine is as quiet as my last 4 stroke, has lots of torque and sips fuel. I get 43 mph loaded at 5200 rpms.


November 22, 2019, 11:16:40 AM
Reply #5

CTsalt12

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Re: finished my 175
« Reply #5 on: November 22, 2019, 11:16:40 AM »
I'd love to see more pictures.  How do you find those trim tabs help your performance?  I usually don't see them on boats of this size.
Jimbo
1989 175 Osprey

November 22, 2019, 02:28:17 PM
Reply #6

hudsport

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Re: finished my 175
« Reply #6 on: November 22, 2019, 02:28:17 PM »
the trim tabs are Bennett self leveling (not hydraulic) they work great to keep boat level when under way with someone moving around also helps on getting up on a plane in shallow water quickly. but since installing the ETec though they may not be needed for that as much since the torque and quick response of this motor does a awesome job on its own. The only disadvantage i see with them is maybe losing some top end speed.

December 04, 2019, 12:47:06 PM
Reply #7

TooLoose

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Re: finished my 175
« Reply #7 on: December 04, 2019, 12:47:06 PM »
Awesome boat.
I have a 17'0 and have been debating on weather or not to install a jackplate. Where the trim tabs installed after the jackplate - curios if you felt you needed the tabs with a jackplate or would the jackplate suffice for trim/etc.

Thanks
 

December 04, 2019, 01:43:19 PM
Reply #8

hudsport

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Re: finished my 175
« Reply #8 on: December 04, 2019, 01:43:19 PM »
i put the trim tabs on before the jack plate and the etec , but i think they all compliment each other in someway. I fish in shallow water most of them time and go up small rivers so thats why i have the jack plate.

December 04, 2019, 08:00:42 PM
Reply #9

RickK

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Re: finished my 175
« Reply #9 on: December 04, 2019, 08:00:42 PM »
Awesome boat.
I have a 17'0 and have been debating on weather or not to install a jackplate. Where the trim tabs installed after the jackplate - curios if you felt you needed the tabs with a jackplate or would the jackplate suffice for trim/etc.

Thanks
 
Why do you think you need to add tabs or a jackplate? Porpoising? Can't trim the engine down enough to push the prow of the boat into the water?
The 170 hull seems to be designed to porpoise. To combat, you trim the engine. Some of the hulls had a "hook" built into the mold (hook is a slight upward bow (bow going from bottom of hull toward the top of the hull) from about 3-4' forward from transom toward the transom. These work as a quasi set of tabs and keep the prow down. Unfortunately I saw this as a flaw and filled it in as I did my rebuild. First time out on the finished boat, it porpoised pretty bad. The immediate answer was to nail it and the bow came back down. I don't have enough hours on the boat now to have it figured out. I would guess that maybe raising the jackplate or lowering it plus trim will take care of it.

I installed a jackplate to fix my lack of thinking through and measuring/planning where the new sole of my rebuild landed versus where the motor needed to be installed. The bottom bolts of the standard mounting pattern landed right on the sole level - oops.  So I had to figure that out and an electric jackplate seemed to be the answer. I could mount that a little lower than normal and then mount the engine higher, and have the ability to raise the engine higher.
I have/had hydraulic steering on the boat and this caused some problems with my jackplate. Another member pointed out that they added a manual jackplate and they also had hydraulic steering and the jackplate offset caused the hydraulic connections to hit the transom as you tilted the engine forward, possibly causing them to be broken off. Glad he posted that - I had to add a 2" spacer plus I have a power pole so I added a 1/2" mount on top of the spacer which gave me about 8" of setback from the transom. I also had to change the type of hose connection that was use for the hydraulics.
If you have a cable, it's going to be tough also because now the cable has to cross the transom out to the engine, where it was all inside the transom before. You might want 1) leave it alone 2) prepare to go hydraulic with a Baystar unit 3) stick with some form of tab. Plus my jackplate added 40 lbs to the transom.
Something to chew on.
Rick
1971 "170" with 115 Johnson (Rebuilding it now)

1992 230 Explorer with 250 Yamaha

December 05, 2019, 12:42:35 PM
Reply #10

TooLoose

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Re: finished my 175
« Reply #10 on: December 05, 2019, 12:42:35 PM »
RickK,

I have chimed in a few times on the idea of jackplate vs trim tabs, but still have not pulled the trigger on either.

It would be specifically be to allow me to trim the motor up while running to get more top-end speed. The boat is quite heavy 'as-is' because I have 80# TM/2 extra batteries and a 35 gallon leanpost livewell. Therefore, I have 4 blade prop which really helps jumping on plane. However, while running if I try and trim the motor any at all the boat begins to propose.

I am not sure if this is stemming from the prop, or weight distribution, but I have tried a few different options for moving weight and have not recognized much difference.

I think the easy answer is the pressure tabs as the OP has here, but was curious if the jackpalte would resolve the same problems as that would be more functional for me

Any thoughts?

December 05, 2019, 01:59:26 PM
Reply #11

mshugg

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Re: finished my 175
« Reply #11 on: December 05, 2019, 01:59:26 PM »
With a heavy engine the setback of the jack plate could work against you, and maybe even introduce a porpoising issue. 

I’m a big believer in tabs.  They will get you on plane faster and in shallower water.  They will allow you to stay on plane at slower speeds.  Plus, if you go with electric, you can fine tune your ride based on conditions and load.  A set of 9x12 Bennet Bolts would be about perfect for a 170.

December 05, 2019, 04:14:21 PM
Reply #12

TooLoose

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Re: finished my 175
« Reply #12 on: December 05, 2019, 04:14:21 PM »
Thanks Mshugg. I'm on it.

December 05, 2019, 05:13:02 PM
Reply #13

RickK

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Re: finished my 175
« Reply #13 on: December 05, 2019, 05:13:02 PM »
The only thing I don't like about tabs on a 170 is all the room they take and the depth behind the transom that they occupy.  I have been looking at the Volvo tab system for a long time  http://www.great-water.com/products/volvo-penta-ql-boat-trim-system

Another thing that could be done is insert a wedge between the transom and the engine to lean the engine backward a 1/2" or more.  https://www.google.com/search?client=firefox-b-1-d&ei=JYDpXfTLCaSK5wKUwazQBw&q=outboard+wedge+kit&oq=outbaord+wedge&gs_l=psy-ab.3.2.0i13l3j0i22i30l7.2974.6719..12719...0.2..0.100.1195.13j1......0....1..gws-wiz.......0i71j0i273j0j0i131j0i67j0i10j0i13i10i30.OOmnYHOdwNc
Rick
1971 "170" with 115 Johnson (Rebuilding it now)

1992 230 Explorer with 250 Yamaha

December 06, 2019, 06:44:28 AM
Reply #14

hudsport

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Re: finished my 175
« Reply #14 on: December 06, 2019, 06:44:28 AM »
With a heavy engine the setback of the jack plate could work against you, and maybe even introduce a porpoising issue. 

I’m a big believer in tabs.  They will get you on plane faster and in shallower water.  They will allow you to stay on plane at slower speeds.  Plus, if you go with electric, you can fine tune your ride based on conditions and load.  A set of 9x12 Bennet Bolts would be about perfect for a 170.

exactly