Chris Craft Scorpion 186 Restoration, Video part 1

24-seven

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Hi,

My first post! (have been a passive reader for a while though)


Just bought a Chris Craft Scorpion 186. Former owner has taken it completly apart and replaced stringers, deck and transom. The boat is also resprayed in white (brown/beige originally).

It was originally fitted with a Mercruiser 4,3 + Alpha one, but the engine is corroded beyond repair, and the out drive is missing.

My plan is to put it back together and mount an outboard on the back (inboards are expensive here in Sweden). The boat will be used almost exclusively for wakeboarding, future equipment will include a wakeboard tower and possibly some ballast tanks.

Now to the BIG question: What is the best way to mount an outboard on my boat? as I see it, there are three possibilities:


1. Notching the transom, hanging the outboard directly on the transom and building a splash well.

Pros: center of gravity stays in the right place, Cheap fix (with alot of work),
Cons: Ugly, splashwell takes up space in the boat



2: Mounting the engine on a Jack plate with as much setback as possible, still need to notch the transom to be able to tilt, but not as much.

Pros: Better control on engine hight, better looking
Cons: center of gravity is shifted backwards, expensive but still alot of work.



3. Buying/Building a transom bracket with inbuilt flotation.

Pros: can include a swim platform
Cons: Center of gravity is waaaay of on such a small boat, expensive if bought and labour intensive if self built.


The transom is 37" tall (so the cutout will be 17" deep with a standard rig)


I?m also considering how much smaller outboard I can get away with. I only need it to do about 30mph, but it has to be able to pull a wakeboarder with a loaded boat. I might also add that I have done this type of stuff before, so I?m not a compleate novis.


Please point me in the right direction regarding ways to mount the engine, and engine size!



boat.jpgtransom.jpg
 
Last edited:

jasoutside

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Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

OK, I have a quick question...

inboards are expensive here in Sweden

So what are equivalent OB's running in Sweden? Like 150 - 200 ish HP range? (Plus controls, plus OB bracket, plus related fab work)

I have to think that replacing the IO with another IO must be cheaper than ^^^. Though I'm not a Sweed backyard boat builder so I wouldn't know the related costs in your neck of the wood.



Plus, being a wakeboard boat (I think) she'll like the IO better eh?



After the answer to the $$ question, the next challenge is the complications of the IO to OB conversion.


Anyhow, welcome to iboats!!:D
 

Woodonglass

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Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

I call this a Conversion Pod
pod.jpg

In the states the cost between $2,000 and $3,000 installed. A lot of the people I have heard about have stated that it definetly changed the handling of the boat in a significant way. Never had one, so I can't speak from experience. If you think this would be cheaper than replacing the I/O and want to risk the Handling issues then It's your choice. Just my 2?
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

Thanks for the wellcome and advice so far!


Swedish prices...

Used but working 150hp outboard with controls start at 3000 US dollars

Used but working 5.0 or 4.3 with A complete alpha one, controls and instruments start at 6000 US


I guess I am a bit wierd but Ill take a good old 2-stroke outboard over a inboard any day, love the simplicity of it, almost no service required, If anything breaks you can fix it your self or just throw a new one on in one hour.

I have most of the glassfiber, polyester, epoxi and plywood laying around, to create a conversion pod/mounting bracket, or a splash well, but are not really shure what the best way is.

For a wakeboard boat straight shaft/mid mouted engine is the best set up, but that would require ALOT of work :) no real digference between outboard or IO in that matter.

I can imagine that putting the engine 30" behind the transome on a bracket would change the handling of the boat, but not exactly in what way.


Anyway, your input is appriciated!
 

jasoutside

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Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

Re: Chris Craft Scorpion 186 Restoration and outboard conversion, advice needed

Swedish prices...

Used but working 150hp outboard with controls start at 3000 US dollars

Used but working 5.0 or 4.3 with A complete alpha one, controls and instruments start at 6000 US

Yikes!

I'd venture to say they are exactly opposite pricing around here!

Are donor boats (with good drivelines) at all reasonable out your way?



Bah, by the sounds of it you are an outboard guy. So if you are bent on going with the OB you are at $3000 for the engine, $2000 for the bracket, maybe $500ish for the related rigging...

That puts you at say, ooo $5500 (rough numbers mind you) for the OB on a boat that was specifically designed for an IO (risky). Plus a whole bunch of work to make it happen.

I'm throwing my vote into the IO install for this boat you have here.

Or, sell what you have and buy a boat designed for an OB, ya know.


All the best on your venture:)
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration

Re: Chris Craft Scorpion 186 Restoration

Ok, after careful consideration I'm sticking with IO and ditching all outboard plans, the boat is just in too good condition to cut up or alter. Thanks for talking me out of the outboard conversion. :)

Looking after a used engine with outdrive now and the the amount of used items fore sale is really limited here in Sweden.

I've found a nice Penta 3,0 with SX outdrive including all instruments etc. (2004) that I'm considering, it's still in the boat so I can test drive it properly. Not really looking for speed ( wakeboarding at 20-22 mph) however fuel economy is nice.

Re-viewing "friscoboaters" Glastron and Sea Ray restoration, to get inspiration. Have to do the interior up from scratch and have not decided if I'm going with the original setup (back to back seats, side storage compartments etc.) or 2 captain cheers and as much free deck space as possible. Also have to make some kind of ski hatch lid, and decide on colors.
 

mrdjflores

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Re: Chris Craft Scorpion 186 Restoration

Re: Chris Craft Scorpion 186 Restoration

as Jasoutside has mentioned, how is the market on buying another complete whole boat, one that has a good drive system, but the rest of the boat is shot...that would give you all the extras you may need for the drive system??

laying out how you want the interior, if your building from scratch, is really dictated by what you want in the boat. use your imagination and also look at many of the wakeboats that are out on the market and see the different seating arrangements
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration

Re: Chris Craft Scorpion 186 Restoration

I think the boat market here is a little bit different from in the US.

Unfortunately older boats still go for seroius cash here, and owners are tend to look after their 1984 bayliner (or simular) like it is their most prized posession, and would not dream of ever admitting to rotten floors and/or transom if you showed them a soft spot. Because of this there are no donor-boats availiable.

The few engines that are availiable on the second hand market here are usually because the owner converted to a diesel engine, (never got that false economy btw), hence: mostly v8:s...

Going to look at a mercruiser 5,7 with Alpha one this monday. 5,7 is really a bit too much for this boat, but 5,7:s are alot cheaper than 3,0:s and 4,3:s here, so why not? :) Even if the gas is 10 dollars a gallon here...
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration

Re: Chris Craft Scorpion 186 Restoration

Yeah!

Finally got an Engine, although I won?t pick it up until next week.

Its a Mercruiser 5,7 with alpha one from 1995 including all instruments, gauges and cables etc. The engine has 800hours on the clock, and has been run in a lake (not salt water) most of its life, although the last 2,5 years have been in salt water.

It used to power a 25 foot daycruiser to just over 40 mph, but the owner has now mounted a Volvo Penta D4 diesel with duo prop drive, to save money on fuel...

I had really wanted to test drive the engine in the boat before buying it, but this engine was realatively cheap and sounded nice when running on the pallet, so I pulled the trigger anyway.

An engine from 1995 might sound like old scrap to you guys but the number of engines for sale in my region at a my price point (I?m on a tight budget) was like two or three, and this one seems to be in good condition.

I would really appriciate if someone could point me in the right direction regarding where to get info about servicing engine/drive (service manual or simular), and also what order and what to think about when installing engine/drive in the boat.

5,7v8-3-small.jpg5,7v8-1-small.jpg
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration

Re: Chris Craft Scorpion 186 Restoration

Man, your 18' boat should fly with that big V8!:D

Where to start?

Here ya go!

http://forums.iboats.com/forumdisplay.php?f=21

:D Yeah, I guess the boat will be slightly overpowered... Was not really going for speed with the repower but hey, now atleast there won't be any problem pulling people up on wakeboards and waterskis :)

Was I really that bad at looking round in other iboats forum departments, obviously yes. Thanks for pointing me towards the best place to start reading up on engine and drive!
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration

Re: Chris Craft Scorpion 186 Restoration

Planning interior layout along with engine drive service and installation. Not sure about seating.

The boat originally had 2 back to back seats and off course seats on each side of the engine cover. I guess we will mostly be 2-3 persons riding in the boat, but sometimes as much as 8 people when we go out with another family.

Right now I?m thinking one captains cheer and one back to back seat. what would you do with this space? (sorry for the poor picture quality)

interior.jpg
 

GT1000000

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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Hi 24-seven,

This is my idea for your seating layout...


24-seveninterior.jpg


If there is the necessary room, it gives you plenty of seating for your max load, and provides for a rear viewing position to keep an eye out for the skiers/wakeboarders...:)

You can adjust and modify as you please to fit the space available...or change the First mates seat to another swivel type, for a safety seat...

Have Fun!
 

mrdjflores

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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

i'm making similar seating in my rig..
LAYOUT1.jpg
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

WOW!

Never thought I would get this good suggestions, really appreciate it!

I like the layout, it also gives plenty of storage space for aditional fatsacs or wakeboards and waterskis. I will have to take some meassurements to se if its possible without giving up to much free deck space.

Very impressive work on the seats mrdjfloores, have already read your thread several times:) Really whant to have a go at sewing most of the interior my self.
 
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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Looking forward to seeing what you come up with for the interior, I'm in the middle of redoing the same boat myself.
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

I reviewed your thred atleast five times from start to end before buying my project :)

There is really nothing wrong with the standard interior layout, but in my case I have to build/buy everything up from scratch (dont even have the old seat frames), and then I might as well change it.

Today will unfortunately mostly consist of cleaning out the gararage so I can get the Engine and drive in. The seller of the engine lives on an Island outside of Gothenburg (Sweden) and there is no bridge or car-ferry so the only way to get bigger things in or out is th use a transport ferry that arrives at the mainland 06:00 on tuesday morning...
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Made some progress this weekend!!


This cowling came with the boat and is (i guess) a copy of the original one. The boat had a 4,3 before and I?m not sure if the 5,7 will fit underneath. The width is OK, but the angled front may not give enough room for the longer engine. Been looking at NorcalChrisCraft:s pictures trying to understand how far the engine sticks out, but its hard to see.

cowling.jpg
Took some meassurements for planning the Interior, man that cowling really eats up alot of space. there really isn?t that much room to change the original layout...

Right now I?m thinking the boat will have less padded areas dressed in vinyl, and more of clean surfaces with fiberglas hatches and teac. Scandinavian-made boats tend to always look that way...

Can someone please tell me the purpose of the holes pictured below, is it some kind of ventilation for the engine?

hole.jpg


When watching Jay (Friscoboater) rolling out white topcote in the SeaRay, cooling fans are on full blast in the background because of the heat. The situation here in Sweden is a litte bit different. :D I had to cover the boat with a tarp and have a heater on full blast to get the temperature up in order for the paint to cure.
tarp.jpg
deck-painted2.jpg
deck-painted.jpg

Pretty happy with the way it turned out!
 

24-seven

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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Thinking about using this as a weight for the bouy:)

engine.jpg
 

Bondo

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Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Re: Chris Craft Scorpion 186 Restoration, just bought a 5,7 + Alpha 1 how do I instal

Thinking about using this as a weight for the bouy:)

View attachment 172687

Ayuh,.... I've got a couple of V8 long blocks holdin' my houseboat durin' the summer months,.... ;)

Lotsa good parts still on that 1,...

At the top of the Mercruiser forum is the Adults Only section,...
Don has packed it chock Full of Great Info, for the things yer about to do...

Good Luck, 'n Welcome Aboard....
 
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