Yamaha V4 115 2 stroke

[FNQCairns]

Anyone owned or had anything much to do with these engines?
How is their reputation for reliability, thirst, performance compared to the once popular and once main rival the Johnson and Evinrude V4s?

Actually any info at all would be appreciated.

cheers fnq

[ozscott]

Bloody beauties. Cannot beat the electronics of the jap stuff. Everything works. Mine is a 93/94 Yam 115 V4 2 stroke with about 250-300 hours on her. Starts first time every time. When cold they like some choke. Do that an you will never have a drama. A lot of grunt. Mine in on a Seafarer Vagabond and easily pushes 4 adults 6 kids and all the gear both out of the hole and top end. Its a joy. Corrosion resistance seems very good also.

[ozscott]

oh... thirst would be no different in my opinion. To get the horses you need the fuel.

[ozscott]

from what I undertand the oil injection is second to none on those. They inject it at the reid valves and not the carbs. It gets as lean as 100:1. They never seem to spit the dummy talking to people. Have a look at IBOATS.COM - US based web site and search for that motor. If you can go to chat room for Yamm and talk to Rodbolt, a US marine mechanic with an absolute shit load of knowledge.

Cheerrs

[stevedemon]

Hi fnq
mate i have an 89 115hp yammy 2st and it has never missed a beat i have also owned an evinrude 85hp 1980 2st after it was rebuilt the same never missed a beat but i will swear by the yammy and great on fuel have had the injector removed and mix the 2 st myself but still a great motor

Cheers ;D ;D
Steve 8-) 8-)

[FNQCairns]

Thanks for the reply's fella's I got a price of $10800 which is cheaper than the Tohatsu 115 up here :-/ and I just cannot bring myself to own a 4cyl merc/mariner again although they are probably now very good.

The Yam is looking be the smart choice for my proposed long term ownership, do you guy's see many of these 115s or the 130 on the water? (for spares out of warrenty if the day ever comes) I didn't need to take any notice till now.

Anyone doing worse than 25L/h at cruise with this engine?

Bugger me my original cheap boat buildup is now really blowing out the budget.

Thanks fnq

[ozscott]

high 20s for me but she is on a heavy rig.

[honda900]

I have a 2006 model yam 130 with 7 hours on the clock, (still running in) the specs of the 115 and the 130 are identical except for the horsepower. It cost 1200 to upgrade to the 130. Mate it is surprisingly quite all the way through the rev range. My boat literally jumps out of the water on to the plane with 3 heavy blokes on board and 3 kids.

The only drama I am having with it is starting on the ramp and when it is cold (pissn me off actually) seems to flood really easy. Once warm first kick every kick. Have crunched some numbers on the engine and have worked out 1.5kms per litre for juice, mind you am still running up and down the rev range.

The boat has a top speed of about 70kms and 38ks sitting on 4000 rpm.

hope this helps

Regards
Honda

[skippa]

Yep,

I'm on my second one now, first one was on my Haines, and now again on the Southwind another 115 sits happily on the transome.

'94 2s (carby models) 115hp on both boats and both motors have performed without a problem. They're not light on the juice, but I guess it all depends on how you drive them, on both boats I get 1 mile per Lt. Not sure on Lts per hour.

The trick to start em cold is choke. They have electric chokes and mine will always start with full choke, keep it on untill it fires. If not first turn of the key it will start second turn. When she's warm, no choke and she'll fire first turn every time. For a 2s people have commented how quiet they are.

Of all the motors I've owned (been a few) the Yammy has been the best so far. I also regularly have them service each year.


Cheers,
Tony 8-)

[ozscott]

honda900 - you should check that the chokes close COMPLETELY because they have to have full choke to start cold.

[boat_1]

FNQ,
I have an 89 model 115 Yamaha on my boat, i get around 1- 1.5 km per litre as well, boat is pretty heavy. It has just had it'd first service since i bought the boat, the mechanic said it was in top condition & they where one of the better 2 strokes around.

Andrew.
http://i72.photobucket.com/albums/i199/tworana/Picture2079.jpg

[FNQCairns]

Thanks for the replys they are really helpfull, I have been flogging the US forums searching for info and I just cannot find a bad word about these engines, sick of reading the phrase "bomb proof".

Actually I dont think I need to buy a new one engine to see 15-20 years out of it with proper care.

Probably like hens teeth to purchase secondhand. The boat it is going on is light with a pressed hull so it should fly and return fair economy at least at cruise I guess.

I am sold thanks again

Anyone know what prop diam and pitch they are running on their rig?

HH17L - Hard to believe that is a 15+ year old engine!!!!! it's certainly in good condition.

cheers fnq

[ozscott]

My 93/94 looks the same except its got sticky crap sprayed all over it to protect against corrosion! Mine swings a fairly big stainless but I will have a look at let you know dimensions. On a light plate boat it will leap out of its skin. My 21foot Seafarer Vagabond gets 4 adults and a tribe of kids and gear out of the water (with 140 litres of fuel) very easily. The torque is excellent - and that was before fitting trim tabs. The top end with 2 blokes and same fuel and gear with 1 foot of chop is 60-65kph depending on the wind. With a full load and at about 5700 rpm she sucks back 48 litres per hour (navman fuel flow transducer) - see the Yammy web site for fuel flow also. But at cruise with 2-3 blokes etc for a fishing trip Im getting high 20s at slow cruise and mid 30s at fast cruise - ie fast is about 45 kph.

Cheers

[whiteman]

Got the 2001 Saltwater 115 2s carbie on a 5.3m Quinny cuddy 300+ hours. Gets 1.7km/l on a good day sitting on 4200 which gets me 28 knots. Will get to 35 knots @ 5600 but steering gets a bit light to be safe.

Troubles? Carbies have gummed up a couple of times and that caused poor starting and conk outs. The Tilt/trim relays needed replacing at 200 hours (2nd hand parts) and now my trim gauge is not working properly.

Great motor, cheap servicing, sips oil, gulps fuel and sounds like an Italian sports car!

[ozscott]

my carbs gum up from time to time also - but thats easily fixed. I venture to say that all carbed 2 strokes are prone when the fuel remains in the bowls and when the fuel vapourises and leaves residue. Takes a while and is easily cleaned out every couple of years. I have never had any problems at all and my LCD trim guage still works properly.

[snelly1971]

We had a pair of 115s on the back of a 6m custom made aluminium tri hull for our fish farm..2000 +hrs and never a problem..the boat has been sold but apparantly the motors are still going strong....fish farming is one of the toughest industries on outboards so i can give an honest vote to buy one... :D :D ;)

[FNQCairns]

Thanks all yet again, seems to be the engine to get in my instance, strangely my other choice is the Mariner/Merc 90/75hp :).

Sounds like my yam V4 and I will have a long and happy association.

Whiteman thanks for the info your boat is close to mine in size and weight, do you know what prop you are running? as your figures read like the best place to start testing.

Thanks all for the good fuel figures, helps heaps to know what I will be getting.

cheers fnq

[whiteman]

Stainless 19-K with Permatrim.

[FNQCairns]

Thanks Whiteman.

cheers fnq

[Fishing_Freddy]

I've got my Yammy 115 on the back of a Haines 5.3m half cab and get to the banks and back to Mooloolaba with a bit of moving around, and used just under 100Ltrs. Which I think worked out to be about 1.25Ltrs/Km and that wasn't on the best day as there was a bit of chop and was up and down with speed, averaged between 19 to 27 knots. Hope these figures help Ken ;D ;D ;D