1979 Starcraft Islander. I/0 to outboard conversion.

havingfun2

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Mar 18, 2009
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A bit of back ground history.
Over the years I have had at least one boat kicking around.Many years ago I had a smaller boat rigged up for fishing Erie. In those days pickerel fishing in Erie was second to none.
The hull was to short at 15 ft but several friends and I had a lot of fun. Even the lady that saw fit to marry me went out a few times.


Family and kids and bigger boats came to be.
Boating then migrated to Lake St Clair.
Great times that migrated towards boat cruising & swimming days.
Yes some fishing in St Clair..but it is not Rondeau and Erie!
Last year the ?family? tried a seasonal camper on a lot at Summer Plave in Rondeau Ontario.
The camper thing seemed to be of more interest so the cruiser sat in the laneway most of the summer.
Rondeau and Lake Erie have vast fishing potentials.
I?m more than happy with that!

I did launch the cruiser once for a few hour run and I would have kept it there but the channel was just too shallow?or it would have been the lake fishing boat!

So..to supplement the 16ft aluminum& 15hp and my little go fast boat that I like to play with http://i178.photobucket.com/albums/w263/havingfun2/overview.jpg
I thought a bigger hull to be able to carry several people out into Rondeau Bay (shallow channel) and Lake Erie to fish was in order.
Mrs and I both like the option of a camper top (sun gets hot) and she likes at least a small cuddy and head for female issues.

The Starcraft Islander seemed to pull all of the ?new? requirements together.
I showed her a new one in a dealer's show room.
We both agreed that 45k for a fishing boat was too much.
I started searching for used ones.
In some ways this is where my screw up started.
If I would just have spent the 10 to 15k for a very good used one, I would not be where I?m at now.
On the other hand I?ve had several i/o?s. They are good for many things and a huge pain and expense for others.

Then I found this sleeping beauty.
http://i178.photobucket.com/albums/w263/havingfun2/islander.jpg
The Mrs laughed at me..thought I skipped a beat. Even the 13 year old said it was ugly.
It was..I knew that.
On our maiden voyage, just the 13 year old and I, his mind changed when he got to fish from it.
He drove it back to the dock and on the way said Dad I like this boat the best.
The Mrs mind changed when I loaded 6 of her relatives in it and took them fishing for a weekend.
The hull and equipment worked wonders. One could not have asked for anything more.
It was so ?ugly and warn? that all the hooks and worms and fish guts did not matter at all!

http://i178.photobucket.com/albums/w263/havingfun2/interior-2.jpgThe problem started about 5 trips across the bay. Maybe 30 miles worth.
To back up again.
I knew those old omc series drives where trouble.
The guy I bought it from said the motor was just redone a few years ago and the drive last year.
He said he had all the receipts. ( which at that time I did not look at, but did receive)
In fact the day I called he said come by tomorrow, as he?s out in the boat fishing!
I did check over the basics..as in it did look like all the things he was saying could very well be true.
It started and ran on the muffs.
It was used, it was old and yes buyer beware.
I thought..what the hay..if and when the motor or drive blows I?ll convert it to an outboard.
(the brand new one the mrs and I looked at was an outboard!)

After the maiden voyage across the bay, I grab a beer and go back to the boat and check some things over.
First issue is I see some oil on top of the value cover..that was not there before..hmm. I had heard an almost knock when underway. The boat tach I thought was off at running speed. Motor did not seem to be getting up to running rpm. Budy comes over to see the new rig. We chat..look it over again..then start it up. At the dock there is a ?new? sound.
We mess around, keep checking..came to the conclusion that by sound it was not major, but something odd was making a noise.

We fished for 3 days.. all was well.. motor seemed off.. I was going to pull it after the week end and check it over.
We did not make it fishing the last day.
What was to be the last trip for that weekend.. I started it at the dock while letting it warm up.. all the kids jump in with 2 more adults.
Just as I?m getting ready to put it in gear..a large mechanical clunk and the motor stopped.
Motor would not turn back over.
I thought.hmm..it stuck..long before I wanted it to!
Best part was it happened at the dock!
It got towed back to the trailer.
Once back at the shop I started to go through things.
Turns out (allow the compression was down and the timing was off) it was not the old iron duke that stopped..it was that %%^&* omc upper drive. Locked up tight.
It came apart.
A marine mechanic friend started checking and found that the upper gear set never got shimmed right. Even I could see the wear pattern.
Back to the receipts!
I started going through them.
yes the motor got a rebuild.. 10 years prior.
Yes the drive got a rebiuld..8 years prior.

Yes used and yes buyer beware..but it seems time passes for a seller ?very quickly?. There just seemed to be some after the fact snake oil there.
The part that really cheezed me was the oil leak. Although not the final problem, I don?t think he had been fishing the day before. The engine was clean when I saw it. He either cleaned it quickly..or had washed it down prior to selling.

Ok..
Now I?m on to my plan.
I could not even be bothered to try and sell this for parts to anyone. I did not want the call backs or anything to do this that drive system.
A marine dealer said he would give me $500 for it.
I said fine..I dropped it off and he pulled it.
I did not even collect the money..I said I?ll be back and use up that money on something I buy.
Motor/drive is out. YES!
http://i178.photobucket.com/albums/w263/havingfun2/Picture003.jpg

Hull is now at a shop to have a new piece of sheet aluminum installed over the transom.
We thought rather than try and fill in all the holes a new sheet will give a nice new surface and all the holes will provide weld points for the new sheet.

Sorry for the looong one!
 
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havingfun2

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Joined
Mar 18, 2009
Messages
29
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

transom replacement
This comes from reading here and on other sites,, and owning a boat or 3.
If you think it might be wet..too late it already is!

The transon in this boat was shot.
With the 400 series it did not matter as much..but with a rebiuld..and thoughts of an outboard and bracket..it's already gone!

http://i178.photobucket.com/albums/w263/havingfun2/Picture017.jpg

The floor boards at the rear look worse than they actually where.
Yes they are shown as wet and they where..because I just pulled the hull in from the rain and because the storage cover had nothing to fasten to( transom removed) all the water rolled back. The rear is going to get replaced..I'm thinking I'll redue the whole upper **** pit floor anyway as the blue carpet will be gone ( carpet in a fishing boat! no way!)
 
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havingfun2

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Mar 18, 2009
Messages
29
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Goals and reasons.

As per the long post.

I like i/o?s..they are good for many reasons.. ie Car motors are better for going slow and not loading up like an old 2 stroke.
but shallow water and worry of early & late season fishing freeze up?s.. no.
The drives have issues also. At the very least is a set of bellows every few years.

Large outboard tech has come along way. The new stuff is turning great numbers for hp and fuel economy.
Yes they are also big $$.
Yes..all the new tech I?m sure will cost $$ to maintain as they are now like a new car with all the electronic controls.
The back yard mechanic is about all done.

My little go fast boat.
I?ve read where if one takes a 2 stroke hp and divides by 10..that will be approx it?s fuel consumption per hour.
Yep!
My 225 outboard will burn just as much fuel as the cruiser with the twin 350?s.

As much as I would like a new direct injected merc or etec or manybe a 4 stroke.
I?ve watched all versions running and they are sweet!
I?m not ready yet to shell out 18k for a new one.


So.

It will be an older outboard.
I?m thinking minimum 150.

The old iron duke was rated (prop or crank not sure) I?ll guestimate crank.
I?ll guestimate 125 maybe at the prop.
With a 150 outboard..everything I read performance wise for the hull will increase for reason?s including
(a) less motor weight
(b) set back..which puts the prop in cleaner running water.


I'm thinking a big older 2 stroke to power the hull to where we want to be..then if trolling..a smaller more as the kicker( bracket already there)
 

Sixmark

Master Chief Petty Officer
Joined
Jul 11, 2010
Messages
890
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Well you now have a nice place to put a live well or an in deck cooler or even just added storage space.
 

fshngho

Lieutenant
Joined
Apr 1, 2009
Messages
1,332
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Ok I get it...your a good friend of EZ's right?:p
HF, I can understand your reasoning and although I never have owned an IB, my friends have. We shared the same experiences and that's why I like OB's too. You have a nice boat there sir, and you will gain a lot more room by kicking the IB overboard. Please keep us up to date with progress reports & lots of pics.

Disclaimer: We all know everyone has their preferences. IB's burn less fuel than OB's etc. No insult intended to my IB brothers, ( EZ is here for that) :eek:
 

havingfun2

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Joined
Mar 18, 2009
Messages
29
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Well you now have a nice place to put a live well or an in deck cooler or even just added storage space.
There is a make shift live well just in front of the engine well. Not fancy but it works.
Because I?m not sure where the exact centre of balance will be once a bracket and outboard are mounted.( I?m assuming bow heavy) I thought once the install is complete and water tested.. I?ll fill in use the rear engine well as required..ie..move the live well forward of aft to adjust the centre of balance.

I like trim tabs on a hull
The hull had a set of those non adjustable spring torque tabs. Not enough control or function for me.
Picked up a used set of Bennett tabs yesterday.
Everything is there and they work.
Those will help with hull balance also.
http://i178.photobucket.com/albums/w263/havingfun2/Picture.jpg

The motor bracket.
I?ve read where
(a) the bracket set back needs to be enough to tilt the ob..ok..makes sence..measuring my other boat approx 24 inchs will provide that clearance.
(b) Set back should be approx 1 inch for every ft of hull length.

I already have a cmc 5.5 inch hydrolic jackplate that I plan to add to the back of this bracket.
(The hydrolic will allow even more motor control)
This makes my bracket range approx 20 inch minimum and up to maybe 24 before the jackplate.

The new islander we looked at had a full width transom bracket that was boxed in with sheet aluminum.
I?m thinking that
(a) for getting on plane and trolling in following seas that extra flotation would be a positive.
(b) It would also provide a swim platform surface.
(c) Because the top of it was checker plate sheet aluminum, the sun would make it hot enough to fry and egg on.



I?ve been calling all the local marine dealers. No-one has a used bracket full width or partial.
A new full width after market seems to be in the $2500 to 3k range. I think that is over budget for this used hull.
I?ve found single motor width brackets like this.http://i178.photobucket.com/albums/w263/havingfun2/bracket.jpg

They seem to be in the $1k range.
Purchasing a manufactured so hopefully engineered and tested would be a positive.
On the other hand..$1k buys a lot of aluminum and welding time

If anyone has leads, pics or experience with brackets, please..I?m all ears!.
 
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ezmobee

Supreme Mariner
Joined
Mar 26, 2007
Messages
23,767
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Nice project. As mentioned, I'm not an I/O fan so I'm all for the conversion. I'd probably be looking for a little larger motor though. A 150 is typically the smallest V6 so you can probably up the HP a good bit and not add anymore weight. 175-200 maybe?

Last fall my buddy bought a 21' Starcraft Chieftain that is woefully underpowered with only a 90HP outboard on it. Despite that, it planes nicely and tops out at 26-27MPH. I think you'll be pleased with how your boat performs with an outboard.
 

jasoutside

Supreme Mariner
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Dec 20, 2009
Messages
13,269
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

I am super interested in seeing how this project develops! I really wanted to go this route on my rig but $$$ seemed to prevent that option for me.

When I was doing the research I had narrowed my bracket builder down to a couple of different guys. There was a fella building them and selling on eBay, I don't see anything up there at the moment. These guys also seemed to be really good...

http://dadmarine.com/

I think the best I could find was in the $1200 range including shipping for something with a swim platform. That quote was from the fella on eBay and he had me painting the bracket.

Have fun!!!:D:D
 

havingfun2

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Joined
Mar 18, 2009
Messages
29
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Thank you for the url lead!

I believe their R-0 single mount version will work. (Unless I can find twin matching say approx 75 to 100 hp boards)

The boat already has a small swim ladder and I already have a bracket and kicker motor.
My thought is one large big motor to get the hull where I want to go, then the kicker to troll and backup.

I have 3 potential motors in mind.
One is an older 150 hp merc that the dealer said he would check over.
Another is a 175 erude cross flow.
I also have a 225 erude mounted on my play boat.

The X dimension. Everything I read points towards longer shaft motors. Makes sense.
The 150 & 175 are 25 inch shafts
My 225 is a 20.

I?d rather more power than less. I know my 225 looper has lots of torque and would easily push the hull. Problem is it?s a 20 inch and when mounting the bracket, the finial install location would be approx 5 inchs lower on the X.

I?m going to call D & D and see what they have to say.
Thanks again.
 

havingfun2

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Joined
Mar 18, 2009
Messages
29
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Thank YOU.. been reading but also making progress on my own "conversion".. going to try and update soon (meaning pic resizes (what a pain)
 

havingfun2

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Mar 18, 2009
Messages
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Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Rather than tring2 fill in all the holes from the last omc 400 series (and over time everything esle)..a new sheet of aluminum got welded in.

Picture-018.gif


Fresh slate!

New wood transom installed.

Picture023.jpg



2 sheets of ? of pressure treat by 3 coats of west epoxy and installed.
(Wood dried to under 10 percent mc) I know lots of opinions on pt and aluminum boats..I hear some of it..but do not agree with it all..if someone wants to debate mc and wood..lets get at it!)

I?ve been kicking around the new bracket issue for several weeks.

I knew I wanted to install a hydraulic jack.( already purchased)
My rational was and still is.
(a) if the bracket install height was not perfect..I can tweak with the jack plate
(b) over all being able to tilt the motor out of warm water infested algae and zebra muscles would be a good thing!


A single engine mount bracket with no swim platform would work. It would be the cheapest route by about 1/3. We still have and have had other boats with swim platforms.

Talking to the Mrs.. her idea of a swim platform was very much different than what I was thinking for this install. That being..a swim platform is a place to sit.. dangle your legs over..entry point into the boat etc. To that issue I agreed!

I almost bought the single.

Yesterday will I?m bolting in the new transom..I thought back to what I was originally thinking.

That being.. looking at the hull structure.
I could make the transom 12 inches think..it would not matter. The next weak link to this install will be the double rivet transom fastening to the gunwale.

I need to tie the new aluminum and new wood transom to the rest of the hull.

I have a plan!

If this bracket moves after I?m done..it will be because it is too rigid.( which I do hold a candle thought to!)

Today I ordered the full 6 ft swim platform version from D & D marine.
R4.jpg


I'm not associated with!
I'm sure a reply here lead me this way.
This bracket with a 6 ft swim platform and a kicker extention just seemed to fit.
I already know I'll have more into this boat than I could by a decent used i/o for.
But at that..I would stil have a 10 to 20 year old i/o and still not the power option I wanted.
So I'm going for it!
 

jasoutside

Supreme Mariner
Joined
Dec 20, 2009
Messages
13,269
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Your new aluminum transom skin was a good route to take, nice/new, clean slate to work with. This will be a great project to watch!
 

havingfun2

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Mar 18, 2009
Messages
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Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Project update.

As per the pics I went this style of bracket as
(a) swim plate form is functional and structural across the beam. (especially with the 4 inch U channel bolted on the inside)
(b) allowed room for the trim tabs.

As per the manufacturers recommendations the top of the clamp bracket is 28.5 inches above centerline.(for a 25 inch mid)
Total set back with the 5.5 jack is 29 inches.

I believe the transom to be solid enough to easily hold the weight.
I believe the next weak link would be the double riveted transom corners.

I have 4 large turnbuckles on order.
2 are going to be installed as knee braces connecting to the ?old? engine stringers.
2 are going to be installed on separate aluminum angle bolted to the hull sides even with the upper 4 inch interior support channel.

Before I finally drilled to install, I had the bracket propped up a saw horses and walked around and measured, then re measured then researched some more. After a week or so of this I finally got the drill out!

I so badly wanted to be able to sea test this before drilling! I just could not figure out how to C clamp it all together!

I?m crossing my fingers my ?theory? is correct. The bracket ?looked? right at this height and from pictures I saw of other islanders with brackets, comparable.
The old iron duke and out drive was approx 600 pounds.
The hull had floated rather even and if anything slightly bow heavy.
The new bracket and V6 any motor will be approx 600 pounds also, but now this weight is all behind the transom including a large percentage 29 inches back.

Because max speed is not the goal, if I?m off I?d rather the cavitation plate on the low side. If I?m too low, I have the jack plate, clamp holes and trim tabs to ?adjust?.
If I?m too high, I have the jack plate plus the fuel tanks and live well etc to move rear.

bracketinstalled.jpg


inside.jpg
 

GLG fishing

Chief Petty Officer
Joined
Dec 25, 2009
Messages
456
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Looks good and I have to agree on the adjustment plans. I?m thinking of a conversion on my boat and will be keeping tabs on how yours turns out. I sure like how the dance floor opens up with out the doghouse in there. Thanks for keeping us up to date on the project.

GLG
 

havingfun2

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Mar 18, 2009
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Re: 1979 Starcraft Islander. I/0 to outboard conversion.

been testing and tuning the bracket with an early 80's 25 inch 150 merc on hydrolic steering. (paid almost as much for that as the 150 merc!)
spinning a 4 blade 20p prop ( had that prop from the doral) hull jumps on plane. pulled the 150 pound son around on a knee board with ease.
I'd say an easy 5 mph faster than the omc 400 series, with several more setup and potential issues to make it all even better.
first go, I thought the hull would be faster, but I do have some issues going on.
Right now, it will run an honest 32 and pull hard.
The motor could stand to come up an inch maybe 2 before water pressure goes for a ****.
After all the revamps to this hull, it's not yet perfect, but first guestimates where close.
 

havingfun2

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Mar 18, 2009
Messages
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Re: 1979 Starcraft Islander. I/0 to outboard conversion.

been awhile for this thread..sorry last year I was simply RUNNING the boat.. works like a champ.
last winter I installed new seating.
Ordered new back to back seats and 2 rear singles.
Installed the back to back..all good.
Could not get myself to screw down the rears.
Carried one "loose" for approx 1 month on the none swim ladder side..then took it out.
Just could not give up the fishing dance floor!
Besides..boat fishes long lines with 4 legal people great..why more seats to get in the way?

Installed a newer efi 150 outboard last fall..Mrs likes the less 2 stroke cloud.
Installed a humminbird 800 series SI fish finder. WOW..having fun with that also.

I've not got around to a paint job mainly because..I leave the boat in the water all summer..and it gets run ALOT.
To me this is a utility boat.
Mrs now calls it "practical".
I've had better looking boats, but NONE as functional as this.

If any starcraft owner with an old drive system sitting on a fence to repower with a bracketed outboard.. I"ll suggest DO IT.
 

havingfun2

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Joined
Mar 18, 2009
Messages
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Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Oh..
and a few minor tweaks that I completely agreed with..passed a professional marine survey!
 

bob johnson

Rear Admiral
Joined
Feb 25, 2009
Messages
4,306
Re: 1979 Starcraft Islander. I/0 to outboard conversion.

Oh..
and a few minor tweaks that I completely agreed with..passed a professional marine survey!
do you have any pictures of the boat sitting in the water at rest, especially the stern? what height was the top of the plateform settled on at? and what was the height of the top hole for your outboard mount off the hull. also what was it you did to tie the transom into the sides of the hull....if you did at all?

bob
 
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