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Old 17 January 2016, 04:08   #1
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Yamaha 25hp 2 stroke Vmax series.

Good or bad, things to look out for, apart from the obvious.

Any views please???
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Old 17 January 2016, 05:23   #2
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I've had 2 Yamaha 25hp 2 strokes and both were great with no issues at all.
But I have never heard of a Vmax series 25Hp.
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Old 17 January 2016, 05:27   #3
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Vmax is normally a big engine and typically a V4, V6, V8....hence the V and the max is normally taking advantage of the law in USA by allowing upto 10% more HP than the badged output...i.e the same as the evinrude HO series. so 100hp can be anything between 90-110hp and still legally carry a 100hp badge, the Vmax will make sure it is towards the 110hp. with that said, in more recent times they have introduced Vmax to 4 cylinder engines but certainly not too long ago and your 2 stroke i assume pre dates this by atleast a decade.

i think whoever is selling it has given you some wrong info, i can't see Vmax being on a 25hp engine as it strays from what Vmax typically means....happy to be wrong though!
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Old 17 January 2016, 05:51   #4
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No idea what that is. If he is making the name up what else is?
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Old 17 January 2016, 08:44   #5
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Quote:
Originally Posted by matt h View Post
No idea what that is. If he is making the name up what else is?
Good sensible constructive reply........!

Quote:
Originally Posted by dubrus View Post
Vmax is normally a big engine and typically a V4, V6, V8....hence the V and the max is normally taking advantage of the law in USA by allowing upto 10% more HP than the badged output...i.e the same as the evinrude HO series. so 100hp can be anything between 90-110hp and still legally carry a 100hp badge, the Vmax will make sure it is towards the 110hp. with that said, in more recent times they have introduced Vmax to 4 cylinder engines but certainly not too long ago and your 2 stroke i assume pre dates this by atleast a decade.

i think whoever is selling it has given you some wrong info, i can't see Vmax being on a 25hp engine as it strays from what Vmax typically means....happy to be wrong though!
This is why I have asked the question.

My last boat had a Yamaha 2 stroke, 200hp V6, and I was under the impression that the 'V' series applied to the the V4,6, type engines.

I am interested in an engine for sale, and I posted in another thread asking questions. I now have the serial number, and according to all the Yamaha charts available, it translate to a 'Vmax' series...!

I am having trouble getting the picture uploaded, but the serial is:-

Yamaha 25VM
61R S 0058828
X

So, if you cross reference that with this chart.....

General | Yamaha Outboards
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Old 17 January 2016, 09:53   #6
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your best bet is probably PM "Davie" on this forum, he is a yamaha dealer and a fountain of yam knowledge, he may even have a 25 for sale!

given it is a yamaha they are generally good engines, all you can do is look at it like you would any other engine that is 17 years old. compression test, mounts okay, general appearance/surface rust etc and make a decision. also make sure your boat can handle the weight of the engine, i don't know if it is heavier or lighter than a "normal" yam of similar vintage.
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Old 17 January 2016, 11:16   #7
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Thank you mate, that is a sound idea.!

As for weight, should not be a problem, the engine is on a boat the same as mine, and both are rated for 25.

Cheers.
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Old 17 January 2016, 11:39   #8
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The hp doesn't matter within reason, check the weight!! It is very probably okay though.
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