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Author Topic:   90 HP Yamaha
Mark D posted 03-17-2002 07:46 AM ET (US)   Profile for Mark D  
I am looking at a 1997 90 HP Yamaha. Its for my 1984 Montauk. Any experiences out there?
John from Madison CT posted 03-17-2002 07:23 PM ET (US)     Profile for John from Madison CT  Send Email to John from Madison CT     
Overall, this is a great motor in my opinion. Yamaha has not changed much at all on this motor from 1984 to today. Super design, light (~270lbs.), reliable oil injection, overall Yamaha quality. Some early 90's models had a reputation for corrosion in SW. The weakest link is the shift rod, which was not made from stainless at that time.

I have this motor on my Montauk. Very fast hole shot, top speed ~40mph.

They use this block for their commercial series 90hp too. (minus Oil injection).

Good Luck, if the price is right, you have a winner.


Mark D posted 03-17-2002 09:11 PM ET (US)     Profile for Mark D    
Its a 1997 no oil injection, stainless prop with controls $3300
John from Madison CT posted 03-18-2002 07:15 AM ET (US)     Profile for John from Madison CT  Send Email to John from Madison CT     
Must be the commercial 90 then or C90 assuming that he oil injection was not removed.

$3300 is a good deal. Be sure to have compression checked and lower unit oil inspected for milkeness.


Bigshot posted 03-18-2002 10:17 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Guy in NY has new ones for $4800. No controls etc. I have a perfect 13x17 OEM SS prop if interested.
Whalerdan posted 03-18-2002 12:07 PM ET (US)     Profile for Whalerdan  Send Email to Whalerdan     
If it's $3300 out the door that's a pretty good price.

I paid $3500 for an 1996 Evrinrude 90 Ocean Pro. That price included tax, license, derig, rerig, SS prop, new oil tank, and 18 month warranty. All that extra stuff can add up.

Bigshot posted 03-18-2002 02:35 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Brand new one on E-Bay right now with SS prop. See what gives.
lhg posted 03-18-2002 07:44 PM ET (US)     Profile for lhg    
Bigshot is right. $3300 for a five year old used engine, without oil injection, that you can buy new for $4800 is too much. The 2 year warranty is worth the difference alone. The engine is worth about $2400 max.

A brand new Merc 90, WITH oil injection, is about $4800 also. Don't know what the Johnsons, if yet available, are selling for.

Mark D posted 03-19-2002 07:17 AM ET (US)     Profile for Mark D    
ILG thanks for your input. Where did you get the price of $2400 ?
Mark D posted 03-19-2002 07:19 AM ET (US)     Profile for Mark D    
Whaler Dan, what's your performance on the Ocean Pro 90?
Whalerdan posted 03-19-2002 09:50 AM ET (US)     Profile for Whalerdan  Send Email to Whalerdan     
LGH and Bigshot - You guys maybe right but to me $1500 is a big difference, it could make or break being able to afford. If the 1997 looks good and checks out good (compression, lower unit solid, no rust, etc.), I wouldn't say a new one is any better. I bet Mark could work a little bit on the deal and get even better, maybe include rigging in the price.

One more thing. If an outboard last 15 years, the $3300 dollar one (which has 10 years left) cost $330/year, The brand new one (at $4800 + $300 for controls) cost $340/year. This doesn't include the added cost of property tax and registration that is higher for the newer engine.

Yamaha's are tough, I wouldn't be the least concerned about a warranty if the motor checked out good. bigshot - how many times did you use your warrenty on your old Yamie.

Bigshot posted 03-19-2002 10:41 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Bought it used, no warranty. Ran great for about 50 hours and then developed some "issues".
Mark D posted 03-19-2002 03:21 PM ET (US)     Profile for Mark D    
What issues?
Bigshot posted 03-19-2002 04:42 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
developed an exhaust leak somewhere down under the powerhead. Replaced powerhead gasket and no dice. This caused a lean problem which made her run a tad coldblooded, actually took forever to stop sneezing. Once warm she ran Good but would not idle for crap, etc. Just got to be a pain. and I felt skeptical about it's dependability. Had carbs rebuilt twice, etc. It just developed some issues.
Mark D posted 03-19-2002 05:08 PM ET (US)     Profile for Mark D    
Not that it has anything to do with it but did it have oil injection?
Bigshot posted 03-20-2002 09:47 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Yup! worked great. I ran 100:1 in a 6 gal tank to make sure it worked. yamaha's VRO is bulletproof. Great engine, just make sure you are getting a good one. A guide can put 2000 hours on an engine in 2 years and it will look like careful.

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