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  8hp, 9.9hp or 15hp for kicker on Outrage 18?

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Author Topic:   8hp, 9.9hp or 15hp for kicker on Outrage 18?
Zack posted 05-29-2002 02:45 PM ET (US)   Profile for Zack   Send Email to Zack  
I am going to buy a Yamaha 4 stroke kicker for my 86 Outrage 18. Primary motor is 95 Yamaha 150hp.
All the below in 20" shaft.
8hp weight=86 lbs cost=$1644.00
9.9hp weight=94 lbs cost=$1848.00
15hp weight=103 lbs cost=$2106.00

Which would you get the use for trolling and as emergency motor for primary lake use.

Thanks, Zack

jimp posted 05-29-2002 03:09 PM ET (US)     Profile for jimp  Send Email to jimp     
Zack -

I've been running a 1990 9.9 Yamaha 4-stroke, hi-thrust on my 1990 Revenge 22 (Cetacea pg 44) since I bough it in 1997. Pushes the Revenge at 5.3 kts. Electric start, push a button and its running, separate battery, has an alternator. Great engine.


JBCornwell posted 05-29-2002 04:55 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Hi, Zack.

I think the 8hp is plenty for an OR-18. It should reach displacement speed in a pinch, and a 15 wouldn't exceed it by more than a hair.

Red sky at night. . .
JB :)

Zack posted 05-29-2002 04:57 PM ET (US)     Profile for Zack  Send Email to Zack     
Thanks for the replies. I was leaning toward the 9.9 but for the weight and money the 8 fits good. Again, Thanks,


lhg posted 05-29-2002 05:38 PM ET (US)     Profile for lhg    
Be sure to mount it on the starboard side.
Tom W Clark posted 05-29-2002 06:16 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
On my 1983 Outrage 18 I had four different kickers on it dover the ten years I owned that boat:

Johnson 15, two stroke
Johnson 9.9, two stroke
Yamaha 8, two stroke
Evinrude (Suzuki) 8, four stroke

All these motors were more than adequate. I suspect a 6 hp would be fine too.

A 9.9 and a 15 are essentially the same motors within any given manufacturer’s line so there is really no reason to buy a 15 for a kicker as the difference will be only be realized at wide open throttle, which kicker motors rarely ever see.

If it were me I would buy the 8 hp as it is both lighter and less expensive yet will be plenty of motor for an 18 footer.

I would recommend that whatever horsepower Yamaha kicker you buy, be sure to get the High Thrust version. These are made for kicker duty and will perform better.

The prices listed above look really good especially if they are for the High Thrust version.

Mounting the kicker on the starboard side of the main motor is desirable in terms of counteracting the prop torque but is not really practical on an Outrage 18 unless you have hydraulic steering. The steering cables will be in the way. That is why you almost always see 18’s with the kicker to port.

Zack posted 05-29-2002 08:40 PM ET (US)     Profile for Zack  Send Email to Zack     
Thanks for all the advise. I have checked and none of these are the high thrust version. I cannot even find a new Yamaha that is listed as high thrust. However, they do offer a prop that is called "Dual Thrust" for use with sailboats and heavier displacment boats. Would I need this instead the standard prop when used mostly for trolling at 2-3 mph. None of the prices listed above included this prop. I think unless I get advise different I will buy the 8hp and try the prop that comes with it. I can always get the other prop. Again thanks, Zack
andygere posted 05-29-2002 10:36 PM ET (US)     Profile for andygere  Send Email to andygere     
There is a poorly maintained Outrage 18 in my harbor, and his kicker is mounted on the port side. This results in his boat always having a pool of scummy rainwater in it because his bilge pump sump is on the starboard side, and the kicker causes the boat to list just enough at rest to pool the rainwater on the port side. It would be worth it to install hydraulic steering just to get rid of that ugly problem.
Russ posted 05-30-2002 12:33 AM ET (US)     Profile for Russ  Send Email to Russ     
I have an 8 hp, rope start, 2001 Yamaha 4 stroke on my '81, 18' Outrage. It pushes the boat at 5mph, wide open. I'd previously had a 15 Honda electric start on it, but I got rid of it because of the extra weight. The Honda only pushed it at 6 mph. Those are statute miles, checked with a GPS. The kicker's mounted on the port side for the reason Tom explained. The eight is an excellent trolling motor.


JimCha posted 05-30-2002 02:08 AM ET (US)     Profile for JimCha  Send Email to JimCha     
I have 18 outrage 88; 150 hp- Suzuki main & 9.9 Hp Honda 4 stroke, 20 inch shaft.

Honda on port side for reasons already listed plus I had a swim platform originally on starboard (now removed). I put a Gaerlick retractable bracket on port to mount Honda as it raised the powerhead higher off transom plus less interference with the main motor. Also linked the 2 motors together with a steering rod connector. This gives better steerage than relying on main motor alone for same.


alvispollard posted 05-30-2002 08:38 AM ET (US)     Profile for alvispollard  Send Email to alvispollard     
Go with the Yamaha 8 hp high thrust kicker. Will do all you need. Just slow trolled for walleye in my montauk for 12 hours on 1.5 gallons of gas. Amazing motor. Will push my montauk 10 mph. You will love it.
RMBW posted 05-30-2002 12:15 PM ET (US)     Profile for RMBW  Send Email to RMBW     
Zack, I live in Wisconsin and fished Lake Michigan for years with different Whalers. My 25 Revenge WT has a 220 + Yamaha and 9.9 hp Yamaha 4 stroke high thrust kicker. This is a great setup and has allowed me to fish in high winds up to 40 mph while other larger boats set on shore. I have a tower on the boat also. This is a 1996 and at the time was the only motor giving enough power to run all the electronics - radar, radio, fishfinder, downriggers etc. You will not go wrong, get the 4 stroke high thrust only, and 9.9 hp will give you enough power to get home if you need it. I had seen several other boats set up with this kicker and everbody was very happy with it,great fuel economy. My boat is for sale if you know of anybody looking for a Revenge 25 with a tower, freshwater used set up to cruse and fish the saltwater. Thanks. Mike
North Beach posted 06-09-2002 08:04 PM ET (US)     Profile for North Beach    
Why is everyonr focued on the fourstroke? Does that create a problem with the fuel line, or is the oil mixed under the bonnett? I have an 86 yamaha 150, and have not had the chance to fully analyze it, but there is an oil resovior under the console and one under the bonnet--am I correct in assuming that the console tank fills the tank under the bonnet and then it is mixed in the engine. This would "free up" the fuel line to be switched over to the 4 stroke kicker in the event of trouble, right?

ALos, I cant keep water out of the under cockpit chase since I now keep the boat in the water and that cant be good for the cables, etc. May have to install builge pump, but rather not.

acseatsri posted 06-09-2002 08:37 PM ET (US)     Profile for acseatsri  Send Email to acseatsri     
8 horse Honda on my 18 pushes it at about 5.5 knots W/O. Fine motor, and with the 20" shaft I can run the boat with it in just over a foot of water no problem. Mounted it on the port side because that's where the previous owner had drilled holes for it. Have hydraulic steering now, moving it to starboard ASAP. List is pronounced at rest and at speed unless I have a "pleasingly plump" friend to starboard to balance boat.
NEVER SCARED posted 06-10-2002 03:30 PM ET (US)     Profile for NEVER SCARED    
I put a 15 on my 18'. For a few hundred dollars more, I get 5 extra hp than the 9.9 (same wt.) The 15 produces more torque with less effort. I fish in the ocean so I like the additional power. Its also mounted on the port side cause my 18' has a molded in area on the transom for adding a kicker. Doesnt yours have that? A starboard side mount would be tough cause of all the fuel/steering cables are just inches from the inside transom.

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