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Looking for a motor to put on my montauk I found a1993 120 ocean pro is this too big it had a90ocean pro that I sold when I started to redo the boat but can not find any motor in the75-100hp for sale in my price range

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We had a 115 Merc on ours, great for pulling up skiers.

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A few years back, I put a 115hp Evinrude FICHT on my 1985 Montauk. Boat was fast, too fast. Hydraulic steering was a must due to chine walk and swinging a 25 pitch prop at the river, I had 67mph on the GPS. Maybe an inch of hull in the water at WOT, that was it. I wouldn't recommend going over the 100hp manufacturer recommended hp.

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67mph is scootin' man!! Lol

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Yes, fast.........stupid fast.

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Boating and STUPID don't go together at all. Be safe out there.

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I repowered a 1974 17 montauk II with a brand new 115 Johnson in the early 90's (It was origionally powered with a 115!). It was a great combination, and just as stable at speed as my friends with a 90hp's. I see the boat to this day, and the new owner still says it is an excellent set up. I would not hesitate to repower with any 4 cylinder 2 stroke.
Pete

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90 HP.

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67mph, not possible with a 115hp on any Montauk, not even on a 15 footer. Finnigan (Larry) has a 115hp 6 cylinder Merc on his Montauk, and I'm sure his won't anywhere near that fast, and he could squeeze the last mph out of any boat. Maybe he will chime in.

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Ours would only do in the low 50's. That was on the boat's speedo (pre GPS).

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It's possible, I did it. See what Larry says. You can always calc it. Very low slip #. I believe RPM was 6,100-6,200ish, banging on the limiter. Takes the right prop and a light boat.

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Sorry ShadBurke, I have to call BS on your claim of 67 MPH. It would take almost 200 HP to get a Montauk to 67 MPH, except on a trailer on the freeway.

A 115 HP could be good for well over 50 MPH but not 60. I know the FICHTs were hot motors, but not that hot!

There used to be a Menemsha here in Seattle with a 175 HP Johnson V-6. It was rumored that boat could touch 60 MPH.

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Down in Texas where they race 16 ft. trihulls with 135-140 OMC outboards they can run in the low '60's.

They would all use 17ft, Whalers if they could run 67 with a 115.

http://www.youtube.com/watch?v=8auYH1...auYH1PDCIo

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Have read the 120 is about 20% heavier than the 90, approximately 360 vs. 300 pounds. Something to consider if true.

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From the old brochures I have checked from 1961 (75hp) - 1975(85-135hp), all the OMC V4 outboards were similar weights 224-267lbs, The difference is the trim and tilt that some motors had or didn't have. What years were the 90 and 120hp versions made.

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Stick with a two stroke 90 ,small , light and 40 plus mph is fast enough for a 17

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i have done 40 ONCE in my 16 and it was plenty fast... too fast...

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I've done 65 in my jet boat. Nice!!!

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Ok all you speed freaks and doubters. Just remember. there is a max hp on a capacity plate for a reason. Must importantly is to keep all you motor heads and I( dont care about anybody els on the water in check.

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I have a 1979 140 hp merc tower of power on my Montauk of the same year. This is a great combination for me. My reason for doing this was i purchased the 140 hp to rob the power trim parts to put on the 90 hp of the same year. I looked at it and just changed out the motors instead because it looked faster. The two motors share the same weight and cowlings. Used responsibly it is a great combination. I am aware of the implied risks of running over the recommended horsepower. With modern bass boats running 300 hp and some jet skis running up to 240 hp this does not seem to out of whack under modern standards. The boat probably goes slightly over 50 mph before it reaches max hull speed and begins to chine walk. It is not the set up for the unsupervised 15 year old kid but non of these boats are. it is really fun in bigger rolling seas. Lots of fun due to the throttle response.

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Personally... I'd be very leery of exceeding the 100HP limit. Even my 90HP can peoduce some pretty hairy situations... shoot out of the hole at full throttle with the motor not completely straight ahead... or too sharp a turn on a plane. The boat will toss you and go right on its way!!!

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What is it with the speed? A sophmoric guy thing? A mine is faster than yours thing? I've seen two boating accidents and one death from an overpowered boat and an underpowered brain. I would venture to say that most of us are out in our Whalers on the weekends and usually navigate within a limited range, so why the bragging rights about who can get there the fastest? Hell, kick back , enjoy the ride, smell the fresh air, take in nature and savor the time underway.

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The fastest boat out here will pass everything but a gas pump! There is a thrill on those very rare occasions when the lake turn mirror smooth and you get a chance to let her fly for a few minutes and see what she will do. I find it a great deal more pleasurable to find the sweet spot, usually between 25-30 MPH when the RPMs and fuel gauge are working together in an economical fashion.

On my local lake here the county mounties who patrol it are quick to mention the fastest boats out there are almost always fueled by Alcohol!

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My 13' runs a consistent 32mph...loaded down, radar, water speedo, and GPS....it always runs a solid 32mph....at least I have consistency on my side.

Yes, my jet boat is a very thirsty critter.......however, IMO, there's nothing cooler than having 540 cubic inches of Big Block Ford power rumbling accross the water....and as long as I can afford the fuel, it's worth it to me.

I have mufflers on our jet so it's not like the obnoxious sounding speedboats with over the transom headers.......mine are through transom exhaust.

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Guys, biggest rush i had in a long time was when Trish and I took the 22 out for a speed run. 54 MPH, which i never saw, Trish was calling out the numbers off the GPS as i trimed, and i was way to busy to relax, as it felt like none of the boat was in the water, squirrelly as hell, but what a hoot!!

Duf

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I will stand by my statements with one subtle change. I meant the motors were easier to swap, therefore faster in terms of the time it took to change them, not the speed of the boat. I will also state the unique characteristic of the mercurys of that era. They share the same block. The are the same weight. The holes in the transom were identical to the 90 hp I swapped out. I even run the cowlings from the 90 hp. I also question the true stated hp of the towers of power. 50 more hp out of the same block? Maybe there is a mercurys expert out there with some knowledge in this area. In terms of the gas pump we all know these old carburetored 2-strokes eat inordinate amounts of fuel. By the way the motor cost $1000.00 four years ago and has performed very well on countless trips. As for the sophomoric attitude; did I dream of this set up as a young man? Yes. Now as i blaze across Columbia River with the wind blowing through my thinning hair I smile with joy like I am 9th grade again. Kind of the point of the these little boats. They take us to different places literally and figuratively.

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Back in my teens my Dad had the need for speed and built a nice little hydroplane from plans he got off Popular Mechanics. It came out great and looked like a mushroom. It did not have any rating as for HP and we had a nice 35 HP Evinrude sitting around. I doubt the boat weighed much over 150 pounds. It took some trial runs to get it set up and trimmed right but on those evening when the lake turned mirror smooth it was a hoot and I am sure we hit 50+ MPH. A buddy has a Jet Ski that is super tuned and will scare the dickens out of most of us at WOT and I think reaches over 80 MPH.

My point is that I don't believe BW's were ever designed to be super Go Fast hulls for the most part. If speed is your pleasure I know there are many other hull designs to meet your needs. Over powering a hulls speed design limits is a rather ignorant practice best left to the racers and daredevils. I don't honestly know the Montauk's top speed limits or at what speed they become unstable and I hope to never be in one when it passes it. I would think 40 - 45 could be rather testy and very close to maximum safe speed in one.

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Where as I agree that BW hulls were not created to be super fast hulls, I think they did do a fine job of giving you a safe, non sinkable hull, fairly comfortable depending on model and size, amount of folks normally using it etc, but also very fast within the limits of engineered capacity. My 22 is rated at 240 hp, and I have a 225 Etec on it. It easily makes 50 MPH, and on a perfect day, we topped out at 54, more then fast enough for this old gear head. My new boat that I pick up in a couple of weeks, is a 89, 25 with WD, and twin 2001 200 Yamaha's. I already traveled to Fla and did an inspection, and a test drive.........what a dream boat. However, one of the first things I will do when I get her home is plunk her in the water and take a high speed test drive just to see what she will do. The present owner didn't know, had never done that been there, and maybe its my enjoyment of a high speed run, or just knowing what my boat will do, I WILL hit the firewalls and lite her up, and if my ball cap is stowed to remove the risk of losing it overboard, my few remaining hairs will get a thrill.

I plan on keeping the motors for at least a couple of years as they only have 230 hours on them, and then upgrading to new motors, manf unknown at this time. One thing for sure, the capacity plate says 450hp, and right now I have 400. You can bet when I upgrade I won't supercede the 450, but I sure won't be lower either! :)

Duf

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That is funny Duf and I don't disagree at all. I love going fast and it is even more fun on the water. I also will bet you do not do as most folks here do, WOT every time they are in forward.

My local lake is a dammed up river that is 1/2 - 3/4 miles wide and 9 miles long. Common practice is to blast one end to the other and then back as fast as it will go. Been there and did it many times but I would not buy a used motor from any one on this lake!

You can bet when I finally float my '74 Montauk with '84 Ev 90 I will soon know just how fast it can go but it will not be the standard practice every time it goes in to forward gear as is the standard practice here. Once I am sure the motor is solid and strong I have the info from Tom about the correct prop and engine height and will have the Stiletto 15 pitch to get it all.

We do have a few rather obnoxious boats here with either twin 454 I/O's or 300 Merc's I don't plan to be racing. A few years back one of them did what is depicted in Tom's avatar with not so great results.

My younger brother has a Suzuki Hyabusa and as hard as he tries he just can't get it up to the to WOT.

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Here's video of a guy with a 130 Yamaha doing ABOUT 60mph:

http://www.youtube.com/watch?v=CUuk-l...ature=fvst

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Back in the 70's my dad and I built a little hydro from Clark Craft plans, probably the original source of your dad's project plans. You brought back a lot of good memories for me. Good times.

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you are correct Gamalot, it is rare for me to go WOT. As those know who have been here for the Whaler Get to gether, its mostly a no wake zone for a good bit of the area. Then, even in ski basin which has no speed limit, or wake zone requirements, its too busy with jet ski's, folks being pulled on boards or skis, boats etc, to go full blast. It is the occasional intercostal water way cruise when the traffic has died down to glance around, look for no boats or wakes or interference and put down the pedal. Play with the trim, get that 5600 rpm's and max out on speed. Short and sweet (use the excuse you cleaning out the pipes) and enjoy. Probably never more then a minute or two, then back to 30/35 MPH simple cruising. Its a bit of a rush, but then what do you expect from a guy with a 1983 CJ7 that installed a 360 HP 350 with a tri power?? :)

Duf

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Good to hear John. I'm not sure which plans he built from but it was in the mid 1960s. We also had a cute little boat called the Volksboat we had a lot of fun with. Growing up on a lake sure had it's benefits but also made me hate the short summers and 2 month school vacations. Dad's biggest thrill was pulling 5 skiers behind his Aristocraft which was great until someone fell. It only worked if he jerked us all off the dock at once.

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Boy's with Toys Duf! They claim my Polaris RZR Sport UTV will do 60 but not with me behind the wheel! On the rare days when Lake Ontario goes flat it is a real hoot to see the big boys play out in front of the Genesee river from Rochester. There are a few Go Fast boats that live for those evenings and one had 4 big Mercury O/Bs and I am sure was hitting speeds of well over 100.

I'll have to ask because I always wondered which boat in the Whaler line is best suited to be a Go Fast boat? I suspect it will be one of the Outrage models rated for 600 HP or more but I would be surprised if any BW could get much above 70 MPH with out getting pretty squirrely.

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Don't know honestly. The boat i'm picking up is a 25 with Whaler Drive and twin 200 Yamaha's and expect it o
be a 50 - 55 MPH boat, and with new 225 ETECS or the new aluminum head Yamaha 225 to be pushing the 60 MPH range, is at least my best guess. I guess Joe or Tom would be the best judges as to (within the capasity plate limitations) which boat is the fastest out of the factory. But frankly, as Joe said to me long ago, "Duf, how fast do you want to go". Answer is, whatever my 25 with WD will do with new twin 225's on her. then i'll call it a day! :)

Duf

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Ft. Lauderdale, Early 90's, the president of the marine advisory council was cited for exceeding the max capacity HP on his 17' Whaler. He had a 2.4L high performance Merc BridgePort which is about 240 HP. I don't think he ever got it up to top speed.

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Fort Lauderdale huh? Haha, doesn't surprise me. There's so much money down there it ain't funny.

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My experience indicates that a 25 outrage WD with 200 HP engines will run close to 50 MPH. A pair of 225's may get it up to 53-54 MPH at best. WD is great way to improve ride, but it is a top end speed killer relative to cut transom models, or transom bracketed models.

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Finegan, since i have no experience with 25's and WD will assume your correct. but, am curious why if WD are strictly an extension of the hull, that they are such a top end speed killer? I guess i'm a little surprised after getting 54 MPH out of my 22 with a single 225 ETEC.

Duf

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Duf - When I ordered my 25 new in 1989, definitely considering the WD model, the guys at the factory told me that a WD model would run 5 MPH slower than the same cut transom model, with the same engines.

I think the WD model carries extra weight and more drag in the water.

A WD model with twin 200's will run about 50 MPH, a standard transom model about 55MPH, and mine, with full transom and Armstrong bracket, Merc 200 EFI's, has been clocked at 62 MPH. That was acheived with a Mercury racing driver at the controls, running 19" Revolution-4's at 6400 RPM! The best i had ever been able to get out of it was an even 60 DGPS.

Here is the boat:

http://smg.photobucket.com/albums/v42...?start=all

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Finnegan, for whatever reason i cannot download your photo's and look them over, which i would really like to. If there is another way to shot them to me, would appreciate it. Will PM you my e-mail address.
6400 RPM's, what kind of motors you got! My recommended RPM's are 5600 on my ETECS! Very cool, and bet you enjoyed the 60MPH. I've VERY interested in getting the boat and settling down to a cruise with just me so i can learn the boat. I'm sure it will have a fantasic ride, and even at 50, which is plenty quick, will be very enjoyable as my 22's have been awesome and i can only assume with 27ft of BW including the WD in the water with a 8' beam, will be the dream boat i always thought it would be.
Any suggestions you have with regards to the boat, don't hesitate to toss them out there!

Duf

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Hey Duf, I have a hard time with viewing Finnegans album also. A lot of his pictures are actually videos that require a true high speed connection or they just will not load. I can get right to his photobucket album but I cannot click on many of the pics unless I want to sit here waiting for each to slowly load up. The ones with triangles in them are useless for me with a satellite internet connection.

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I can say I rarely run this boat over 50. Most of the time we are loafing along at 25-35 MPH. One thing for sure, Duf, the 25 is a LOT more boat than a 22.

The engines are 1997 Mercury 200 EFI's, redlined at 5800.
But the Mercury racing guy said they can easily take the 6400 RPM. But I don't run them up that high. I switched to 21" Revolution-4 props, to keep the revs dwon to 5800-5900 RPM.

If and when I ever need to repower (engines currently have 2200 hours on them) I will get a pair of Merc 150's, probably the new 150 4-strokes just being introduced. They should still give me 50 MPH.

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We sure have gotten way off the subject....

What happened to "Whats the biggest motor you have put on a 17 Montauk" ?????

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Twin 8 hp Tohatsu 2 strokes tiller steered. 12 knots at 90% power,13+ knots full throttle. But that was when the boat was a bare hull.

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LOL, sorry bout that Joe, guess i helped side tracking that one. Will start a thread on 25's, power, upgrade, refit etc once i get my boat :)

Duf

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Back on subject

I had a 1995 Montauk with a 100 HP Mercury tuned up to 120-130 HP (aprox).

Being on Mercury pro team I was able to tried different Mercury props until we found just the right mixture of whole shot, top speed, and cruising at 4000 RPM.

While fishing The Red Fish tournaments, with normal gear and 20-25 gallons of fuel onboard with two people it would run flat out at 52 MPH via GPS...

GPS vis radar gun speeds are not the same, cause your moving in a volume that in its self is moving. When testing boats, I’ve found radar gun speeds to usually reflect faster speeds than the GPS is reporting.