Looking at a 30hp yammie but it states a 100:1 ratio. It seems a bit light on. Would the downside of this be that the motor wears out quicker or wouldn't it make any difference??
Also can this motor be run on a normal 50:1 mix or would that cause problems??
Cheers
rojac
G'day Rojac,
A mate with a 30 Yammie was advised by the dealer to run not leaner than 50 - 1.
I've also been advised of that on this site.
Yamaha has been 100-1 there 2stroke bikes for years they know what there doing with them maybe some cross over technology. But why you leaning the Yammie way?
I've looked at tohatsu,merc, suzuki and yam.Originally Posted by fishn-ads
Cost is a major consideration, which cuts out the suzi and merc. The yam is made in japan, all the gear that I've bought that has been made there has always been very good compared to other countries and I can get the services done at the local yam dealer 10 minutes away.
Having said that, I'm yet to commit.
cheers
rojac
Rojac
It sounds like a good reasoning to me for going with the yamaha.
I had my yamaha two strokes idling out of the water during flushing when another guy with a merc started flushing his motor. I have to say even though his two stroke looked like a much newer model than my yamahas I could not hear my motors over his. ( and he was about 6 metres away)
Yes the Japanese do make some good stuff.
Steve G
My yamaha dealer told me 100:1 is fine but he consideres oil cheap and advised to go between 50-75 at this rate the spark plugs are as clean as using 100:1 so why not a bit more oil. Use TCW3 formula i believe its a synthetic oil.--I find no problem with my yamaha..
Ahoj
Sounds like a good reason to me also.
I only asked because i recently got a new engine and found yamaha one of the more expensive, and that the majority of the feed back showed alot of independent (not sales men) people leaning away from the Yammy.
Aren't all those manufactured in Japan and offering 3 years warranty 30hp 2 strokes are bulletproof and don't need alot of servicing. I know that a month ago the Mercury looked to me the far best value in the 30hp market. I ended up going for a 40 Tohatsu though.
Just my opinion.
Ads
The yam has only a two year warranty unless you buy it in a "package deal" and then its three on the lot. The tohatsu and merc have three on everything and the suzi two.
I've been quoted $2900 for the tohhatsu and $3K for the yam (cv) but not as part of a pakage.
cheers
rojac
50:1 has been proven over the years as the best ratio for premix 2 strokes if you want the motor to last. There is nothing at all different about Yamahas or other 100:1 motors which makes them run on less oil. It is just a marketing decision and a concession to the environment. Mechanics have told me after several years a motor run on 100:1 will show wear whereas a motor run on 50:1 will look almost like new inside.
Have a look at the 3 cyl 3 carb 2 stroke Yammy. Very smooth running, plenty of torque and economical. A mate is running his on a 4.15 Sea Jay Magnum and having been out in it a lot, I have found it to be a good combo.
Cheers
I had twin 60Hp Yams on my Cat and always ran them at 100:1 with no probs. However the only bad thing that will happen if you run at 50:1 is a bit of extra cash and smoke. If it gives you piece of mind then go for it. A lot of the variable injection motors around now will run way, way leaner than 100:1 at low revs and richer than 50:1 at high revs. Everything's a compromise.
If you go messing about with the fuel/oil ratio, might be a good idea to check out the warranty details as some manufactureres void their warranty if you don't use the correct mix!
I'm of the opinion that the manufacturers tend to know a bit more than the local dealer does!
The manufacturers don't care if your motor wears out after ten years, by then the warranty is long gone. Note that Tohatsu recommend 50:1 and they are not built differently from the so called 100:1 motors.
Rojac, Is it electric start and remote controlled? Short shaft? If it is ignore this. As I only have quotes for Long shaft, Tiller/Pull start.
If not Tohatsu price quoted to me was $2575.00 Motor only. As said a month ago Mercury was running them out about $200 cheaper. I paid $3407.00 for my M40c l.
PM if you want dealer details.
Ads
Agree with bushbeachboy, The 3 cyl version has oil injection so you don't even have to worry about premixing
Pinkpanther is right too! manufacturer knows best. they'll also tell you to use Yamalube oil. I ran my 15 on 100:1 and 75:1 ratios. I didn't find any difference but for some extra smoke. The yamaha dealer said no reason why not 50:1 in the small motors but he said the larger sizes(30 up) need to be run at the correct stated ratio or fouling can be an issue.
cheers, roo.
PS. I liked the yamaha........but i love my zooki (4str)
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