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Author Topic:   Montauk Re-power
whalerski posted 01-21-2015 01:20 PM ET (US)   Profile for whalerski   Send Email to whalerski  
have not been on with you in a while

nice to see same faces on CW

short story my 1985 Montauk original owner 85hp Susuki, 1985 has finally given up the ghost. was original engine babied for 30 years

Good stuff
top speed low 40's, nice out of the hole and used primarily for fishing and cruising. And lasted this long with moderate use, weight 270 lbs

Bad stuff
make a v loud racket, smoked, injectors caused a new powerhead replace 1 year of adversarial negociations with Suzuki, impossible to tune without 'special' tool no dealer had after 10 years, did not idle or slow troll well partly due to 'special' tool to adjust low speed idle.

used original prop and replaced with same over years as would read your performance specs - was relatively satisfied with what I had

have read posts and threads repeatedly over last three years on repower with a consistant confusion on the consenses here and I greatly respect our collective consciousness when it comes to Whalers

Thought the answer might be a fictional F90 Yamaha 'soon' to be released at any momnet and worth waiting for , The f70 seemed a bit small but same weight and I have a poling platform to push in the gulf when flyfishing from louisana to key west so less weight is not a bad thing

Have not been able to ferret out of the posts if anyone thinks the Montouk 80's do well with the F70 if set up properly

reading etec 90's as the CW prefered repower I think - with only 60 lbs additional weight - but get horror stories from guides in the keys from largo to key west on etecs problems with longevity. Yamahas being their answer

I will be using this from the UP to Key west salt and fresh as I have for the last 30. Is the Etec the answer and has the reliability improved??

repowering Next week!!

thanks in advance and as always
I love you guys

DVollrath posted 01-21-2015 01:53 PM ET (US)     Profile for DVollrath  Send Email to DVollrath     
I've had an F70 on my 1988 Montauk for a couple of years now. I think I have around 150 hours on the motor, but I'll need to check. It is a great combination for me. While the 13" prop is a bit short and may take some top end away, it gives nice hole shot.

Here is a link to some performance measurements I conducted:


[Fixed bad link--jimh]

Alan Heckman posted 01-21-2015 02:26 PM ET (US)     Profile for Alan Heckman  Send Email to Alan Heckman     
I repowered my 1999 Alert 17 last spring with a new Yamaha F70 and I love it. With a 13.25 x 14 Yamaha Performance Series propI get a good hole shot, top speed of 38 mph, and unbelievable fuel economy. Put this together with easy starting, quiet running, no smoke, and light weight which is a real plus on a 17 ft Whaler this is a great repower choice IMO. This motor has exceeded all my expectations so far. My boat is used exclusively for fishing on Lake Erie. AL
tedious posted 01-21-2015 03:30 PM ET (US)     Profile for tedious  Send Email to tedious     
Alan, not to hijack the thread, but what RPMs are you seeing at the 38-mph WOT with your 13.25" x 14? Thanks.


Teak Oil posted 01-21-2015 04:19 PM ET (US)     Profile for Teak Oil  Send Email to Teak Oil     
Florida is Yamaha land, so thats what all the locals will advise.

Get whatever motor has the best local support. If you boat with a heavy load all the time the extra power of the E-tec is nice, but the Yammy is a good motor

contender posted 01-21-2015 08:14 PM ET (US)     Profile for contender  Send Email to contender     
Teak is correct either a Yamaha or an Evinrude... Way to go...
jimh posted 01-21-2015 11:31 PM ET (US)     Profile for jimh  Send Email to jimh     
I don't see where you made the case for the reliability of the E-TEC to be bad.
Alan Heckman posted 01-22-2015 07:59 AM ET (US)     Profile for Alan Heckman  Send Email to Alan Heckman     
Tim, 6200 RPM. Motor mounted 3 holes up. Al
tedious posted 01-22-2015 09:30 AM ET (US)     Profile for tedious  Send Email to tedious     
Thanks Al, appreciate the info.


whalerski posted 01-22-2015 11:19 AM ET (US)     Profile for whalerski  Send Email to whalerski     
Dennis /Jim. Thanks for links missed that data before
Did you try the 14" prop? Any diff in top end??

When trimmed did you pick up any mph ( vs DF70 Suzuki data)


whalerski posted 01-22-2015 11:35 AM ET (US)     Profile for whalerski  Send Email to whalerski     
Alan thanks for info looks close

Teak to your point of service and support
I rotate to multiple areas from gulf coast to UP
So my concern, after 30 years with a Suzuki with a very difficult to find marine service in much of that area - although better in last 8 years,

I will need support in multiple locations
Again have been told Yamaha has advantage but continue to read support for Etec here

Have minimized Tohatsu, Suzuki, due to less network

Merc and Honda weight puts them on the side as well

Did I miss 90 Etec data on 80's montauks?
Is there an easy link?

DVollrath posted 01-22-2015 01:08 PM ET (US)     Profile for DVollrath  Send Email to DVollrath     
I set the trim to a neutral position prior to taking the measurement sequences. This position corresponded to the setting I normally cruise at. I didn't want to adjust trim during the testing because it affects rpm, and that was what I was trying to hold constant. I don't believe I could have gotten any more top end by trimming out further, as I was fairly high to begin with and was rev-limited by the motor.

I (most likely) did not have a chance to try out a Yamaha 14" prop. Tom did get me a prop that was supposed to be a Yamaha 14" that he found on eBay, but it performed so similarly to the Stiletto 13" (perhaps even a bit shorter) that we questioned if it was as advertised.

At any rate, it is not clear I'd have bought the prop even if it did perform like Alan's. I rarely open it up such that the extra 2mph would be noticed, and I really like the extra pop on the low end. I'm pretty content with my setup.

That being said, I'm in the process of repowering a 1985 Outrage 18, but I bought that boat for the extra room it affords vs the Montauk.


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