Moderated Discussion Areas
  ContinuousWave: Whaler Repairs/Mods
  Pacific Northwest repower

Post New Topic  Post Reply
search | FAQ | profile | register | author help

Author Topic:   Pacific Northwest repower
Taylor posted 06-24-2003 06:08 PM ET (US)   Profile for Taylor   Send Email to Taylor  
I've always said if I faced another big repair or a reliability issue with my 1988 Mercury 100 I'd just replace it. Looks like I might get that opportunity. Not that I particularly wanted it. Dang. I'm looking at a problem with the motor mounts and steering tube, the parts alone are going to set me back $600 or more. If I have someone else do it, I'm looking at more $1400. Sigh... why does this always happen mid-summer? (don't answer that!)

So... we've debated Montauk repower choices to death, I think I'm a candidate for a 90 Yamaha 2S or a 90 Mercury 2S. I want the top end speed, I like the simplicity and proven track record of the two stroke. I'm leaning Merc.

So... does anyone have any recommendations as to where to get an engine, and who to do the install? Washington is a sales tax state, so getting the engine out of state would be good. On the other hand, once again, I have a vacation planned for the second week of August, so I really only have a month to get this job completed.


JBCornwell posted 06-24-2003 07:09 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Check out

Red sky at night. . .

peetmin posted 06-24-2003 08:43 PM ET (US)     Profile for peetmin  Send Email to peetmin     
You'll save a ton if you buy that Merc in Vancouver B.C. A buddy of mine went up last summer and picked up a new 175 Merc. with controls and a prop right around $6500 US bucks. No problems at the border. You better not be breaking this in during Your Desolation trip. It would be kind of embarassing having a big fat 22' Revenge beat you...:^/
Dick posted 06-24-2003 08:48 PM ET (US)     Profile for Dick  Send Email to Dick     

I just e-mailed you some info on installation.

Your best bet on pricing for Merc motors will be Stevens Marine in Portland.


alkar posted 06-24-2003 09:56 PM ET (US)     Profile for alkar  Send Email to alkar     
Taylor, I'm with Dick on this. Stevens Marine has tremendous buying power. Nobody in the northwest can compete with them if they want to make the sale.
lae posted 06-24-2003 10:31 PM ET (US)     Profile for lae  Send Email to lae     
I am taking my new (to me) outrage 25 to Clemen's Marine in Oregon City this week for repower. Best prices I could find on Yamaha in this area. However, if you send me a list of what you need for the old Merc, I will check with my old outboard guy behind the shop. I am fairly sure that he will have what you need to put it back together.


Tom W Clark posted 06-25-2003 10:16 AM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     

My condolences on the condition of your boat. But a new motor will definitely put a smile on your face when all is said and done.

You say you want a two stroke Mercury or Yamaha and I'm sure both would be fine motors, but my advice would be to get the most powerful and reliable of the 90 hp motors out there and get a Johnson 90.

While a Johnson will necessitate a new control for the boat, that in itself might not be a bad idea anyway. Nothing lasts forever and I know you've been having some trouble with the trim/tilt switch on the one you have now.

As to where to buy, there is a lot to be said for patronizing a dealer that is accessible to you if you need parts/service in the future. On the other hand buying a loose motor and dealing with the installation yourself could be fun and satisfying for somebody who is mechanically inclined.

I've seen the Johnson 90 advertised for as little as $4500. Of course you would need to pay for shipping and buy a control, wiring harness and gauges, but you will be doing that if you buy a Yamaha.

If you buy a loose motor, you can bring your boat over to my house and you and I will rig it, (and rig it correctly) and you can be on your way to BC in August. We could do it in a weekend. (Where have I heard that before?)

raygun posted 06-25-2003 10:36 AM ET (US)     Profile for raygun  Send Email to raygun     
I think Seaway is the only local dealer that will sell the Johnson in the box. They have a great parts department. Last year their price was 5450 on the 2003 Johnson 90. I couldn't find anyone in Portland to sell me one in the box.
alkar posted 06-25-2003 11:07 AM ET (US)     Profile for alkar  Send Email to alkar     
Larry, did you buy the beautiful 1986 outrage 25' with the Johnson 275 that was for sale up by Jantzen Beach?
PSW posted 06-25-2003 11:08 AM ET (US)     Profile for PSW  Send Email to PSW     
Go to Vancouver and buy the engine depending on what brand you decide to go with, some manufacturers like Yamaha are trying to stop cross border sales to protect local dealers. Mercury does not seem to care though. Have Tom rig it. The 90 Merc looks nice and light. Try M & P Mercury they are also a whaler dealer and are good to work with.

Best of luck,


lhg posted 06-25-2003 03:45 PM ET (US)     Profile for lhg    
Taylor, you know I think you're leaning in the right direction.

Regarding repairing the 4 cylinder 100, a tilt-tube is not a big deal. I think they're about $70 and you can do that installation yourself. I have replaced mine, and you can get an SS version if you want from Mercury. But motor mounts require dealer work if they are truly shot. I had them done on one of my Mercury 115's about 2 years ago, but have forgotten what it cost. It's almost all labor, and not cheap.

Regarding new 90's, I'll try to be as accurate as possible, as all are good, highly reliable engines in this popular HP rating.

The Mercury 90 will probably be faster than your current 100, an engine I have never particularly liked. Some here, including "Mr Mercury" Clark Roberts have reported top speed of 50 MPH with it on a Montauk, set up right. 46-47 should be easier to obtain. This will be a simple hook-up on your boat. This engine probably puts out more like 105 HP, and has an 18 amp alternator. A good price on one these is now about $4900. Get the Blue Graphics SALTWATER version!!! (about + $50)

For the Johnson, TWC knows more about them I ever will. Obviously the 60 degree V-4 design is a nice plus. My only three thoughts are the separate oil injection tank is a big rigging and space (in console) downside, especially in a Montauk, we don't know who will end up owning the Company, and they don't make a Saltwater version with the SS tilt tube and other components. Have no idea what the true HP or alternator output is. I think owners here are reporting about 44mph with it on a Montauk.

The Yamaha 90 is hugely popular also, with a solid reputation, but it has less cubes and only puts out about 82 HP according to some here. Why pay more for 90 (over cost of Mercury or Johnson) and get 82?
Alternator is 10 amps, low in my estimation, with today's electronics. It will run the slowest of the three. Personally, I don't like the cruising speed sound of this engine, as the Mercs I am used to sound completely different. Also, no saltwater version is available. I believe this engine powerhead is a copy of the old OMC 3 cylinder 70's. I think owners here are reporting about 42 MPH with it on a Montauk.

Whatever engine you get, don't put an aluminum prop on it.
If you get the Mercury, install it on a black Rite Hite 6" setback bracket (Cabela's), lift it up a little, and get a Merc Laser II 22" pitch prop with medium size vent plugs!
I know that "bdb" (the famous Harry Harpoon of Door County) has just installed a Merc 90 on his Montauk, so you might want to get in touch with him, a former OMC owner, to see how he likes it.

Unless you have a particularly strong dealer connection/relationship, I would have the motor shipped in from out of state and bolt it on yourself.

Have fun with your project.

Taylor posted 06-25-2003 04:53 PM ET (US)     Profile for Taylor  Send Email to Taylor     
I think I might have overreacted here. I've been making a careful review of my finances, and my spousal relations, and I am still considering repair. Or at least I've been told that I ought to be. I might have found a used interediate bracket from Steve Leone, and that would give me most of the parts I need for a price I can justify for repairs. Larry, I'll send you an email with some parts details.

I really appreciate how everyone jumped in with good suggestions, I'm going to be a little embarassed if I end up being able to fix this myself.

Tom - thanks so much for that great offer. I think we did something like this last July, right? I'm keeping my boat off that boat eating dock between now and August.

I had not considered Johnson, but those V4's are nice because of the way the hunker down on the transom, the monster straight four I have now. Its also hard to argue with 105 cid. Hey... there's a 115 HP version at the same weight... It may be true that while paying for repowering is no fun, the results make you happy.

Taylor posted 06-25-2003 05:16 PM ET (US)     Profile for Taylor  Send Email to Taylor     
Sorry Larry, I got distracted between starting and submitting my post, so I missed your great recipe for performance with the bracket and prop and vent plugs. But what are vent plugs? I was actually thinking about the setback bracket already, that's one reason I was looking at the lighter 2S engines. Thinking a little more about the Merc 90.. I wonder if there might be some used ones from owners of new Montauk 170's that want to trade up to the 115.
Dick posted 06-25-2003 09:22 PM ET (US)     Profile for Dick  Send Email to Dick     

I now have the Mercury electronic parts catalog for parts look up and MercNet for on line availability and price on my home computer.
Let me know if I can be of assistance.


peetmin posted 06-26-2003 05:23 PM ET (US)     Profile for peetmin  Send Email to peetmin     
1997 Mercury 125hp 2 stroke. Long shaft less then 30hrs. $3500 "rigged" Channel Marine services Portland Or. Back of the boat trader

Post New Topic  Post Reply
Hop to:

Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.