Fuel consumption for yammy 130

[pajeromako]

I have a boat southwind 5.5 with 130 2s yammi. Its consume about 1.7l of fuel per km, travelling at 4300rpm, 42 km per hour. Is the consumption right? Thanks

[winston]

Pajeromamo
1.7 L/km=3.2 L/nm. I use about 1 L/nm with my 140 fourstroke on a 5.6 m halfcabin. This does seem a little thirsty even for a twostroke. Cheers Winston.

[Jarrah Jack]

Going by my experience with a 115 yami those figures don't surprise me although thats a lot of drinking. Anything less than 4000 rpm or over about 4600 will see those figures look even worse.

[FishHunter]

5.5m Cruise Craft 150hp Evinrude carby 2 stroke, approx 1L to 1km at 4200 rpm 40km/h in good conditions.

[honda900]

Yalta 555HC, Yam 130.

Flat day .7 Litres per KM. 4200rpm at 42KPH

Offshore 1 litre per KM. Variable RPm

its was thirsty in swell, on and off the throttle.


Regards
HOnda.

[FisHard]

1.7l per 1klm @ 42kph = nearly 80L per hour! I doubt that a 130 Yammie could use that much per hour at full noise. I would say around 1L per Klm at cruise would be more like it. Somethings wrong with either your figures or the motor.

[timddo]

i think he means 1L per 1.7 km. I average about a mile a litre on my 115hp so the 130hp can't be that bad.
My boats sweat spot is 24knots for 24 litres at 4000rpm. But once you hit the throttle it's goes up.

[winston]

timddo, I don't think so. 1L/1.7 km = 1.1 L/nm. If that were the case, I would never have opted for the fourstroke. In fact, fourstroke outboard motors would never have been developed. Cheers Winston.

[uripper]

Have Yam 130 2st on a 1989 Haines Hunter 560 with extended pod and fuel flow monitor hooked up with Lowrance Global 7200C. Consumption varies with conditions & trim of motor and trim tabs. Routinely average around 1.2km per litre typical trip to Hutchies /Cape /Tempest etc @ 40-50kph. There is no sweet spot in the rev range. It all depends on craft, set up & conditions. Often find best consumption is @55kph approx 5,500rpm if conditions flatish. Can max up to 1.8 km/L but last trip was a shocker with steep short swell out & back for abt 0.8km/L = $200+ & not a scale:(
Your readings seem a bit high, though also appreciate mine will guzzle big time if not 'up', balanced & swing'in happily.
That said, cheap to service, almost bullet proof, simple & reliable. A great 2-banger!!
MalM

[trueblue]

I have really good fuel figures on my 130 2 stroke with my Lowrance fuel flow meter

I average 1.2 klm per litre, and can get as good as 1.4 klm per litre in favourable tides / swell etc and the clears window down. Flat out I can now get 1 klm/litre at 6000 rpm, since I defied Solas and other prop people and went with the opinion of Colin at Performance Props and put a 13 1/2 x 13p solas 4 blade prop on. Everyone else was trying to sell me 15" or 17" pitch props that were overpropped, and costing me fuel economy. I lost5 knots of top end speed that I never use, to gain about 30% fuel saving / km.

[pajeromako]

Thank you for your contributions, I think the problems could the the prop and/or hydrofold, the max rpm for the engine is only 5400. I may have to check with Colin at Performance Props.

[shane450]

I have a 2008, 610 Ozcraft centre cab with a 130 yammy , I get approx 1 - 1.6 Kms per litre depending on conditions and load .

I have the standard yammy prop still on .

[pajeromako]

I have a 2008, 610 Ozcraft centre cab with a 130 yammy , I get approx 1 - 1.6 Kms per litre depending on conditions and load .

I have the standard yammy prop still on .
That is very good. I would be happy with 1-1.3 kms. My prop is a stainless steel prop with a word 17 k. I wonder what is 17 k ?

[timddo]

I thought your rpm is 5500 to 6000

[Hossfish]

Hi folks. this is my first post on this site so please be gentle.
At the risk of being guilty of a bit of thread drift, i pick up my new stejcraft 640c on Thursday and it has a yamaha 130 on the back. Just curious how much of a running period will be required as this is my first brand new O/B. I know it will be in the manual which i will read thoroughly but just curious in advance.

Stay safe and fish hard

Regards Hossfish

[Axl]

Hi folks. this is my first post on this site so please be gentle.
At the risk of being guilty of a bit of thread drift, i pick up my new stejcraft 640c on Thursday and it has a yamaha 130 on the back. Just curious how much of a running period will be required as this is my first brand new O/B. I know it will be in the manual which i will read thoroughly but just curious in advance.

Stay safe and fish hard


Regards Hossfish

Hi Hossfish follow the link and you can have a look at the manual in advance. Its all in there.;)

http://www.yamahaownershandbook.com.au/index.php

[rosco1974]

normally the 1st 10 hrs mate

[outta line]

had a seafarer 5.5 cc vouge .I worked on 1liter to 1km and wasn't far off every time i fill back up at the pump as i had no flow metre.i found with mine you were always on and off the revs no real sweet spot as others have said. sold it with over 450hrs on the clock with no problems

[outta line]

sorry forgot to say that average was for offshore running

[trueblue]

trim tabs, foil, 4 blade prop, and the right pitch to suit the boat for the weight you carry - then you will find the sweet spot. I can run in certain conditions at a certain speed, and through changing trim etc, can maintain the same speed and change the fuel economy from 0.8 klm / litre up to 1.2 klm / litre.

Now I look for the sweet spot, and the only way I can find it is with the fuel flow meter - you just can tell by feel or the way the boat is riding. And somethime I think that trimming out will improve the fuel economy and try it and see on the fuel flow meter that it didn't work and then trim in and it gets better... you just can't tell without the fuel flow meter which is one of the best investments I have ever made.

[trueblue]

also, since I changed props down to get maximum rpm 6100 at maximum load, now I get much better fuel economy at higher revs. dropped the top end speed, but the engine is much happier. I ran back today in sh!t conditions at 20 knots and got 1.4 klm / litre without getting on and off the throttle

in good conditions I can now afford to run at full noise because it never gets worse than 1 klm / litre. Previously with the wrong props at full noise I would be down to 0.7 klm / litre

[captain red beard]

I have a 130 2s on o 555 yalta craft. Has a solas prop that came with the boat and I seem to get 1.3km per litre according to the fuel flow meter. I normally sit at about 30 knots at 4900rpm. Best thing I found was to remove the hydrofoil and lift the motor up as far as it can go without cavatating in rough weather, then trim engine as high as you can.
I always plan a trip using the 1l per km theory incase the weather turns bad.
Cheers Red Beard

[Tinshack]

73428Hi Pajeromako, I have the same boat but with 115hp 2s yammy. I have extra fuel tank up front, so 200L fuel, 100L ice box, fishing gear & 2 blokes & I average 1.4km per L but depends on conditions. Glassy flat 1.7km/L, very rough conditions 1.2km/L. I have been through various props with Solas, tried 4 blade but no good, ended up with New Saturn 3 Blade 13 1/2" x 15" Pitch & raised the motor 1 hole so trim plate is approx. 3/4" above bottom of boat. This works well for heavy load in swell. WOT is 5700 with load & 5900 with no load. I have Lowrance fuel flow sensor hooked up to HDS units, attached is the fuel rate, rpm & speed readings. You should be getting way better than 1.7L per km, the blue line on graph is the same prop as you have now, the red line is the new Solas prop. Changing the plugs on 2s's can make a massive difference for fuel economy also. Cheers,