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Author Topic:   170 MONTAUK: SmartCraft
Robert V posted 03-12-2009 06:45 AM ET (US)   Profile for Robert V   Send Email to Robert V  
I would like to replace my analog tachometer [on my Boston Whaler 170 MONTAUK] with a Smartcraft tachometer. What parts will I need to order? How [will the Mercury SmartCraft tachometer] hook-up? I have visited a variety of sites, including Mercury, and can't seem to find a clear answer. Oh, I have the LN4A Veridito 90-HP motor. Thanks for any help you can give,

Robert V
Williamsburg, VA

dbrown posted 03-12-2009 09:07 AM ET (US)     Profile for dbrown    
Robert, I have the same engine and all you will need is the 2 resistor wiring harness (resistor on each end) and the Smartcraft Tach. I purchased mine though Livorsi Marine and the part numbers are (SCS7000) Smartcraft Tach and (SCH2R20)(20') harness. It is simply plug and play. Plug one end into the engine and the other to the Tach. Livorsi is very knowledgeable about Smartcraft setup and their pricing is hard to beat.

http://www.livorsi.com/

SC Joe posted 03-12-2009 12:24 PM ET (US)     Profile for SC Joe  Send Email to SC Joe     
Robert, I have enabled the Smartcraft interface to my Northstar 657 GPS/Depth finder and did not change out the tach. I may at sometime however, but because it will give me redundant capabilities (mpg, mph, etc), I haven't. Yet.

I am not certain as to which 90 hp Mercury engines are SC capable. I know the newer nmodels with fuel injection are; however, they may not all be before a certain model year. Before I ordered any parts, I pulled the cowling off my engine and looked for the wiring. Smartcraft is terminated at the rear starboard side of the engine. There is a (I think) blue terminator that says something to that affect. When I get home tonight I can take a picture of the terminator you should find and will need plug into, if your engine is SC capable.

dbrown is correct in that you will need the 2 resistor wiring harness cable in order to get from the engine to the dash. I purchased mine from Ebay, as well as the necessary junction box. I don't have these part numbers handy, but will look for them later tonight.

The 90 hp is not 'completely' SC capable. It lacks some things like water pressure, trim angle, and pitot speed. There is "Smartcraft ready" kit that Mercury sells for under $200 that will add all these sensors. Again, I will get you this part number later. I haven't purchased it yet because my GPS was giving me most of that info, however, I plan to buy it in the next week or so to finish my installation.


Robert V posted 03-12-2009 03:41 PM ET (US)     Profile for Robert V  Send Email to Robert V     
SC Joe and dbrown,

Thanks for the replies. Joe I would really appreciate the part numbers you mentioned, that would be a big help. I go on the Merc site and get a bit overwhelmed with the partial info they provide. I have the newer 90 HP, the one based on the Verado 4 cycl. (75-200 HP). Thanks for the help guys,

Robert V
Williamsburg, VA

SC Joe posted 03-12-2009 07:09 PM ET (US)     Profile for SC Joe  Send Email to SC Joe     
You will need a Mercury SmartCraft Harness 84-879982T-x (the 'x' being the length). I purchased a 25' cable that is WAY too long, but I think 20' is the shortest you can get.

You'll also need a junction box, part number 878492K-4. It has 4 ports, so you'll need caps for the other 2 ports you don't use, part number 859318T-2. You'll plug your tach (or speedometer) into that junction box.

The "Smartcraft conversion kit", part number 889250K01, will allow you to get water pressure, tilt angle and (I think) pitot speed through the Smartcraft gauges.

I installed this on my Northstar 657 and I used a NS0005020
junction cable that went from the junction box to the 657.

You can find a lot of this stuff on Ebay, like I did, for MUCH less than buying from Mercury or Livorsi. And I don't know about your Whaler/Merc dealer, but mine is so incompetent that they had absolutely no clue as to what I was trying to do and even less idea how to get there.

There are some good threads on this site that go into some detail how to do it on other sized engines, but installation is similar:

http://continuouswave.com/ubb/Forum6/HTML/001755.html

http://continuouswave.com/ubb/Forum6/HTML/000894.html

and this .pdf has som good info as well:

http://www.navmanmarine.net/upload/Marine/Internet_Manuals/install/ smartcraft_eng_web.pdf

dbrown posted 03-12-2009 08:46 PM ET (US)     Profile for dbrown    
You will be looking for the connection on the starboard side of the engine. You can see the harness with the "to engine" label leading to it in this picture of my engine. It will have a black and yellow termination cap on it.

http://i48.photobucket.com/albums/f250/rickdb1/image2826.jpg

Robert V posted 03-16-2009 08:29 AM ET (US)     Profile for Robert V  Send Email to Robert V     
Thanks for the help, I think I can get it done with the info you both provided. Did'nt take a look under the cowling this past weekend, pretty nasty here all weekend. Thanks again,

Robert

jimh posted 03-16-2009 08:35 PM ET (US)     Profile for jimh  Send Email to jimh     
My impression of SmartCraft is that Mercury does not intend that the customer retro-fit SmartCraft to their engines. In spite of that, several people have accomplished it. The links suggested above are some of the best source of information about retro-fitting SmartCraft gauges to an existing motor.

Let us know what you find. CONTINUOUSWAVE is always looking for good information about SmartCraft installations, and you can contribute your experience.

chuck21401 posted 03-17-2009 01:17 PM ET (US)     Profile for chuck21401  Send Email to chuck21401     
Check out this guage package installation on a 170 Montauk.

http://home.mindspring.com/~rkmcmanus/

SC Joe posted 03-17-2009 08:44 PM ET (US)     Profile for SC Joe  Send Email to SC Joe     
That's where I got the idea for the 50th anniversary nut on my steering wheel :)

I've ordered the Smartcraft Conversion kit to give me teh remaining smartcraft goodies from Andy @ SIM, so hopefully next weekend I will be installing it. I'll try to get some pics together when I do.

ktm3ten posted 03-17-2009 10:28 PM ET (US)     Profile for ktm3ten  Send Email to ktm3ten     
Does anyone know where I can order that steering wheel in the updated gauge photos. I'd like to replace my plastic wheel nut with the etched metal one. I assume that means I'll have to replace the whole wheel. if so, where can I get the one with the etched hub nut? Thanks
Robert V posted 03-18-2009 06:56 AM ET (US)     Profile for Robert V  Send Email to Robert V     
SC Joe,

I would like to see the photos when you finish your Smartcraft project. I will post mine as well, although I have yet to order my parts. Sounds like you are well ahead of me with your project completion!

Robert V
Williamsburg, VA

Phil T posted 03-18-2009 08:10 AM ET (US)     Profile for Phil T  Send Email to Phil T     
The photos in Chuck's link come from Pilot's mod. It was designed and discussed here:

http://continuouswave.com/ubb/Forum8/HTML/003464.html

The steering wheel appears to be the current standard BW wheel on Outrage and Conquest models.

SC Joe posted 03-18-2009 08:24 AM ET (US)     Profile for SC Joe  Send Email to SC Joe     
>>>Does anyone know where I can order that steering wheel in the updated gauge photos. I'd like to replace my plastic wheel nut with the etched metal one. I assume that means I'll have to replace the whole wheel. if so, where can I get the one with the etched hub nut? Thanks<<<

You can get the wheel at any boating supply store; Ebay is a good place for them as well for around $100. I purchased a padded one with a turning knob for $79. Don't fret much about the fact it was made in China; so is the OEM wheel that came on my Whaler.

The steering nut is separate purchase and comes from Boston Whaler exclusively. I purchased one that came from a 2008 Outrage 270; it was $18. You'll have to specify if you want the 50th anniversary logo; I assume they still have some left. If not, the standard nut they use will say will have eth Boston Whaler name and logo laser engraved.

One caveat and thing to know: The nut from the larger Whalers has a 5/8"-18 thread. The shaft on my 170 Montauks's steering shaft (and any teleflex cable steering helm)is a 1/2"-20 thread. I was able to get around this by purchasing a stainless threaded insert for the nut from Mcmaster Carr (part number 94165A471) for $4.75.

I did notice the '09 Sport 150's they have a non 50th anniversary laser etched nut with logo that might be the same thread pitch that could work on the Teleflex shaft. I do not know what the cost is.

You will also need a special plastic socket to tighten the nut against the wheel onto the shaft. I was able to pickup a Schmitt socket that fit from Boaters World, but since BW is going out of business, it may be difficult to obtain from them. I do not know where else to source this socket except from Edson, and they were very expensive ($40 or so). You may be able to get you local boat dealer may tighten the nut for you for free.

SC Joe posted 03-18-2009 08:28 AM ET (US)     Profile for SC Joe  Send Email to SC Joe     
>>>SC Joe,
I would like to see the photos when you finish your Smartcraft project. I will post mine as well, although I have yet to order my parts. Sounds like you are well ahead of me with your project completion!<<<

I've just been working on it longer!

I missed a Smartcraft tach on Ebay that sold for $26 a few days ago. If I am able to pick one up that cheap, I will add it into the project. If not, the Northstar 657 I have will diaply everything (and more) that the SC tachomter will.

L H G posted 03-19-2009 05:50 PM ET (US)     Profile for L H G    
That Whaler steering wheel shown in the gauge installation above, is made by Schmit and costs $195 from Whaler. I also just saw it for the first time in an Overton's catalog, also for $195. The big SS nut is extra, and Whaler will need to know whether you have mechanical or hydraulic steering. Overton's also has the non-embossed versions.

I have one installed on my 25 Outrage.

SC Joe posted 03-19-2009 06:05 PM ET (US)     Profile for SC Joe  Send Email to SC Joe     
$195?? That's crazy talk.

Check out Ebay and get basically the exact same wheel for <=$100.

jimh posted 03-19-2009 08:22 PM ET (US)     Profile for jimh  Send Email to jimh     
Please move discussion of steering wheels to a new thread. This thread is discussing the addition of SmartCraft instruments to an existing motor. Thank you.
SC Joe posted 03-21-2009 08:30 PM ET (US)     Profile for SC Joe  Send Email to SC Joe     
I installed the Smartcraft conversion kit today.

It gives the owner 3 functions: the ability to see engine trim, engine water pressure, and pitot water speed on a Smartcraft display.

The install is very straitforward. This is what came with it:

http://home.comcast.net/~joefiat/whaler/package.jpg

http://home.comcast.net/~joefiat/whaler/parts.jpg

The kit basically consists of a wiring harness and sensors. They go in the area of the engine in the upper left hand are (with two holes):

http://home.comcast.net/~joefiat/whaler/enginebefore.jpg

The included harness plugs into this plug:

http://home.comcast.net/~joefiat/whaler/plug.jpg

Here is a pic of removing the analog trim sensor:

http://home.comcast.net/~joefiat/whaler/oldsender.jpg

Wiring that sender was a REAL pain. The senders wires have to fit through a grommet that was NOT made for the size wires that have to go through it.

I did have a problem with the water pressure sending unit install. The sending units fittings Mercury includes with the kit are oddly paired. The tubing fitting is a male thread that appears to be about the size of 3/16" NPT (but it's not). They ship it screwed (lightly so it can be disassembled) into a 1/8" NPT female threaded fitting. This fitting screws into the engine block. I'm not sure if the thread mismatch was meant on purpose or not, and they intend to seal it with mismatched threads. But Whaler 170's come standard with a dash mounted water pressure guage, so the engine block hole where the SC conversion kit water pressure fittings are supposed to screw into is already filled with the factory gauge fitting/hose:

http://home.comcast.net/~joefiat/whaler/pressure.jpg

Here are the installed sending units. The water pressure sender is on top, the pitot speed sensor is below it (with blue stripe):

http://home.comcast.net/~joefiat/whaler/senders.jpg

My intention is at a later time to find a 1/8" NPT threaded tee (3 way, male fittings) so that I can use both the dash mounted gauge and the Smartcraft info to view water pressure. For now, I'll just use the dash mounted gauge.

I'll add that viewing Smartcraft information on my Northstar 657 GPS/Sonar is very cumbersome to set up. The manual includes nothing on how to make it work; it's pretty much up to the user to figure out. I got it, but it wasn't intuitive.

SC Joe posted 03-25-2009 09:11 PM ET (US)     Profile for SC Joe  Send Email to SC Joe     
I was able to complete my installation tonight after finding a 1/8" FPT tee. I now have the Smartcraft water pressure reading and the Whaler installed guage both plumbed.

This was an easy project to tackle; Anyone here should be able to finish this project easily.

dbrown posted 03-25-2009 09:26 PM ET (US)     Profile for dbrown    
Thanks for your tutorial on the Smartcraft conversion kit installation Joe. Very informative and the pictures make it very clear.
Robert V posted 03-26-2009 07:05 AM ET (US)     Profile for Robert V  Send Email to Robert V     
SC Joe,

"You 'da man"! Very impressive, you went alot deeper into the Smartcraft info and senders than I am going to go. Very nice job and thanks for posting the pics along with the description. Your post is a big help with my project.

Robert V

SC Joe posted 03-26-2009 08:43 PM ET (US)     Profile for SC Joe  Send Email to SC Joe     
Robert V--Your are welcome! If you (or anyone) needs any more information please ask and I'll try to answer.

jimh posted 03-26-2009 11:14 PM ET (US)     Profile for jimh  Send Email to jimh     
Joe--Thanks for making those pictures available to supplement your excellent narrative. I know from experience that documenting a project as you accomplish it takes extra time and requires careful planing. Your pictures were excellent and very helpful.

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