Top 5 of all time?

[shortstop20]

I'm bored so...

I was just curious what 5 Yamaha snowmobile motors you guys would rate as the top 5 of all time. This can be all throughout Yamaha's history. 2 strokes, 4 stroke, ANY motor that ever went into a PRODUCTION Yamaha snowmobile. I'm curious to see the variety of answers that we will see here.

 

[ViperTom]

Apex, Rx-1, srx 700, srx 440, Viper, take your pick on the model year.

 

[Junior]

1. phazer 485, decent power for it's time, cheap to build and therefor to buy, and very reliable, this motor changed the sledding industry forever

2. Vmax 750 4 cylinder, the results speak for themselves, 10 years later and still a force on the drag strips, outlawed from the oval track in a single year 'cause it was to fast.

3. SRX700, the ultimate in 2-strokes refinement and power, reliability to boot.

4. VK540 motor, the workhorse that has been chugging for nearly 20 years without any changes, it has a job and it does that job well.

5. SX/MM 700, good reliable motor, easy to mod and virtually maintenance free, again it's success in the mountains speaks for itself.

 

[skidooboy]

mid 80's vmax's, even with the problems. scared alot of people.
phazer fan, bulletproof fun
vmax 4 cylinders, fast and sounded sweet as hell. passed everything but a fuel pump.
srx 700 powervalve motors. set the standard for power reliability and fuel economy.
genisis 4 cylinders, brought 4 strokes to the world of cold.

believe its a little early on the verdicts for the 3 cylinder apex sleds but they show promise. my .02 ski

 

[Master of Faster]

Too young to know much about the old Yamaha sleds. But for sure the Vmax-4. Own a 750 Vmax-4 and an RX-1. I will never part with the Vmax-4.

So for me it would have to be:

1. Vmax-4

2. RX-1

3. Powervalve 700 Triples

4. Non PV 700 triples

5. 3-cyl 4-strokes


Just curious Junior, why do you say 750 Vmax-4 particularly and not the 800, 800 definitely makes better peak power. 750 motors seem a little torquier, they really come alive though with pipes.

 

[Exciter570]

Vmax 540 motor, Twin pipes from the factory in the 80's, sweet!
Exciter II SX 570 motor
SRX 700 powervalved DCS motor
Genesis series motors
and best of all....

Vmax4 800 motor

 

[TimeBomb]

485 phazer motor #1 for sure
750 vmax 4
sx700
genesis extreme
srx/viper motors

 

[sxviper32]

have to agree with the 485 phazer
also the srx, preferably after 98
and the srx 440 was i think the biggest, preferably 77, most power and rarest now days

 

[yamahinn03]

The 485 Phazer motors were able to run on water I think.
The new Genesis motors are awsome.
The 3 banging power valved motors are sweet.
The 440 SRX motors were troublesome but back in those days radical
And lets not forget the GPX 338 F/A (WISH I STILL HAD IT......)

 

[REDMATER]

i like the gpx 433
the pahzer 485 one benchmark of a snowmobile
600/700 powervalved srx's
and the 700 npv engines bar none one of the greats as well
i am not well informed on the 4stroker's,but hey the name says it all,and Y is setting the standard for even better things to come.

 

[DoktorC]

1. Genisis EFI
2. Vmax 4- 800
3. SRX 7
4. SX 7
5. 540FA...the only engine more reliable then the 485 lol

 

[Junior]

Just curious Junior, why do you say 750 Vmax-4 particularly and not the 800, 800 definitely makes better peak power. 750 motors seem a little torquier, they really come alive though with pipes.

just 'cause it was first, and it was the one that really set the oval racing world on fire, 800 is a damned fine motor to, but the 750 had broken the ground if you nkow what I mean.

 

[ejcamaro]

1. 00'+ 700 powervalve
2. V-Max 800
3. Genesis EFI
4. V-Max 540 piped
5. 93' 570

 

[vipertripplexxx]

Did you guys forget about the....GP 643, Bad to the bone! That thing could roast just about anything for it's time(1972?)!!!!!!!!!
v-max 4 750/800's smoking thundercats like cheap cigars. nuf said!
srx 600/700 motors, servo controled power valves, passin by storm owners on the lake and at the pump!
rx motors, cause it's the first four stroke in a sled with more horsepower than a most two strokes. I still say they sound weak, need a harley cam or something!!

octane booster? aint that bad!

 

[vipertripplexxx]

540 liquids were fast, but they had serious crankshaft problems.
sx motors, not ground breaking, eveyone already had tripples.

my #5 I'd say the srx 440 liquid, sxviper32 hit it on the head 1977, horsepower to displacement still rivals most current sleds with powervalves.

 

[yamaholic22]

Hell yea the srx 440 from 76-79 were all awesome. Really could get some power out of those babies, with such a lightweight chassis.

 

[tomseal6]

1.00-02 srx 700 and viper
2 94-96 v-max 500/600 motors
3 433 exciter motors
4 250/340 enticer motors
5 440 srx motors

 

[sandmanmike1]

The 78 Enticer 250. When it came out is was running with other manufactures 340's and some 440's. Was lightweight and fast and suspension changed the industry.

The Yamaha SRV 540 was another big hit.

The Phazer 485 with it's lightweight twin with good power was agile in the trails and a blast to ride.

SRX 700

RX-1 Started the Four-Stroke revolution with it's breakthrough 4 stroke technology.

 

[norwegian]

02 srx motor with dcs
700 non valve, bulletproof
485/500 phazer motor
vk 540 motor
700 valve motors (other than srx, it is on top)