View Full Version : Expected power outputs for the 3rd Gen SV.
SV650S_DUB
15-01-09, 02:33 PM
Good afternoon,
with all the collective speculation on what a 3rd Gen SV series might look like it's left me wondering what sort of power outputs, horsepower and torque people reckon this bike, should it ever be made, is most likely to offer up.
If the Gladius is taking the mantle of Suzukis introductory v-twin can we realistically expect a little more oomph from a new SV?
Are we looking along the lines of the kind of extra power the Bandit 600 went when it grew to 656, that being no extra top end but a 10% rise in torque delivered at a low revs?
So which of the power pools do you consider most probable?
yorkie_chris
15-01-09, 02:36 PM
Here we go again.
If it is still 650 then it will be weaker yet again due to the stricter emissions laws which have killed off the SVthou.
Biek strategy to get through noise laws is to dump loads of fuel in to dampen the sound (basically, a healthy engine sounds nice and crisp, which the eurocrats hate!), then bolt on 11 million tonnes of catalytic convertor.
So basically rip the cat out, remap it, fit some stage 2 cans... and you might be somewhere near the engine they wanted to design in the first place!
Dangerous Dave
15-01-09, 06:48 PM
If it is still 650 then it will be weaker yet again due to the stricter emissions laws which have killed off the SVthou.
+ 1, if they make a 700cc then expect it to be the same as the current SV's but with stricter emissions laws. I can't see Suzuki upping the power, despite me tuning an SV to near death, as the power isn't the SV's low point.
750cc would be great with about 80bhp suit me just fine and a r model with better spec'd bit's on would be ace.
Dangerous Dave
15-01-09, 06:54 PM
750cc would be great with about 80bhp suit me just fine
You can get that from a 650cc.
You can get that from a 650cc.
new engine from suzuki i meant i can't be bothered to sort that all myself rather buy something that already has it :D.
Current generation "moderate" bike engines are being quoted at typically 12.5Bar BMEP at max torque, and something like 11.8Bar at 20m/sec mean piston speed (actually a representative measure of intake gas "mach index" or "gulp factor", but a convenient tool).
Translated into real world numbers that equates to near as damn it 100Nm per litre torque, so a 650 with 65Nm. Power will depend on stroke (MPS/RPM in other words), but say it was still a 650 with 81x62.6mm BxS like my curvey, that's around 61kW (82BHP) at 9600rpm. That would be very respectable indeed.
The likes of Fireblades and YZF-R1 are claiming nearly 14Bar BMEP max torque and 13Bar at 22m/sec MPS max power. Now I have to say I find these figures somewhat optimistic, even allowing for the pretty extreme nature of the engines and not detracting from the abilities of Honda and Yamaha. The figures come as a result of the various efficiencies, volumetric, thermal, and mechanical, and from what I know it's hard to see quite where they are getting much above 13Bar max torque and 12.5Bar at max power (and 22m/sec MPS is extremely good going for a 4-valve, it's down to valve/bore area and gas speeds), but maybe they are.
Those numbers would give 72Nm and 74kW (99BHP) at 10500rpm in a 81x62.6mm SV650, but I doubt it would be anywhere near achievable without the benefits from 4cyl intake/exhaust tuning, so don't start dreaming.
The point of the SV650 is that it's a cheap bike to run and insure. I wouldn't be at all surprised to see cubic capacity increase a little and power stay more or less where it is, within 5bhp or so. What they won't do is attempt to make it any quicker. They could, but that's not the point of the SV650.
MattCollins
16-01-09, 07:56 AM
In AU at least the SV650 has a very important role to fill as an entry level bike. It is guaranteed a place in the model line and most importantly (to me) longevity with LAMS rules (650cc + 150kW/tonne - no third party restrictors...). Any increase in capacity would be local suicide with the 650 going the same way as the 1000 if it had to compete with open class bikes.
The one area that Suzuki could do a little work is in the suspension department. I would have gladly paid the extra $500 (that is about what it would cost from OEM, but could be more than the market would bear) or so for adjustable cartridges and shock with proper valve stacks instead of forking out $$$$ for aftermarket parts. That is my only grizzle with the bike, but I will cop that for a nice bike that suits my needs.
Cheers
The poll seems to be missing an option for "not enough to be worth caring about".
yorkie_chris
16-01-09, 12:05 PM
Yes, unless your bike has 120+bhp, you must be gay.
yorkie_chris
16-01-09, 12:13 PM
http://www.vikdavid.com/blog/pics/nelson-haha.gif
I'll tell you what's gayer though: 107bhp/litre.
I'll tell you what's gayer though: 107bhp/litre.
why most good sport tourers rarely crack 120hp dont make them **** just less of a posers bike.:-D
When I still had an SV, every time I went out to the garage to ride it I ended up taking the 220bhp/litre pocket rocket instead. The SV was just too boring.
Nice that you stick around though ;)
Somebody's got to spread the faith ;)
When I still had an SV, every time I went out to the garage to ride it I ended up taking the 220bhp/litre pocket rocket instead. The SV was just too boring.
too you maybe some people don't need a ballistic missile to have fun on a bike and the sv's a good balance between easy use nice power and cheap and simple mechanic's depends what you want from a bike really :D
yorkie_chris
16-01-09, 09:06 PM
220bhp/litre? The RGV? Can understand that being fun.
too you maybe some people don't need a ballistic missile to have fun on a bike and the sv's a good balance between easy use nice power and cheap and simple mechanic's depends what you want from a bike really :D
FWIW, the bike in my garage that puts the biggest smile on my face only makes 55bhp.
Makes me swear a lot too, mind.
220bhp/litre? The RGV? Can understand that being fun.
55bhp at the wheel and weighs marginally less than a Waitrose BLT sandwich. It's a hoot.
Get one.
Not mine, obviously.
yorkie_chris
17-01-09, 05:11 AM
I've got an RD400 ... all the power, none of the handling.
I've got an RD400 ... all the power, none of the handling.
They don't even make that much power, do they? 40bhp or so.
yorkie_chris
17-01-09, 01:20 PM
No idea... will see what it makes when I put some spannies on it.
sv-robo
17-01-09, 06:07 PM
Yes, unless your bike has 120+bhp, you must be gay.
Me not gay:D
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