Pointy model differences ?
 

Hi everyone
Im new to forum and on the lookout for a pointy SV and was wondering if there were any changes engine wise throughout this model range?
Im a big tinkerer and know i will unfortunately end up throwing money at it and wanted to know if there was a better model to go for if i want to modify.
Cheers

Re: Pointy differences ?
 

curvy = carbs.

pointy = TB's. K7> get twin spark.

pointy = not much you can do part from mess with map in brains and big bores.

curvy you can tinker with cams, carbs and also big bores.

Re: Pointy differences ?
 

Thanks Bibio, i was only intending to replace exhaust and add power commander to the motor and spend most of my time on the handling. Is the twin spark any better than the single?
Cheers

Re: Pointy model differences ?
 

I believe it's more for emmisions; to make sure more fuel is burnt and not spat out the back.

Re: Pointy differences ?
 

Why can't you change the cams on a pointy?

Re: Pointy differences ?
 

You can, it's just that mostly people put pointy cams in curvy engines. The pointy engines already come with pointy cams. There are still further gains to be made using inlet cams on the exhaust side, but they're just not as great.

Personally I'd start with the bike that's in a good condition and not fuss too much about the year. From K3+ there's been nothing that would be considered a performance gain, just additional emissions systems added.

Jambo

Re: Pointy differences ?
 

Thanks Guys

Re: Pointy differences ?
 

You can.

There is some discussion over here if you'd like to know more...

Re: Pointy model differences ?
 

twin spark is a bit of a controversial topic some say for, some say against but as monkey stated it burns more of the fuel so it must be better right! well sort of. gasses are ignited in two different places so you get a messy combustion but more fuel burnt. single gives a better combustion but lees fuel burnt. both are dictated by how well the cylinder head is designed and compression ratio, air to fuel so on and so on. it's a lot more complicated than the answer i gave and i don't admit to knowing much if anything technical about it. carbs are smoother and easier to tinker with to get a better burn with less emission bolt ons to go wrong.

power commander is a waste of money as far as i'm concerned on a 650 v twin as the gains if any are not worth the wonga. better to have the OEM brains mapped instead. same goes for K&N filters and such like. if you plan on keeping the bike for 30k+ then its a good investment but don't look at it as a 'performance' item. same goes for fancy plugs.

spend the cash on the suspension and brakes which in turn will let you go faster. the SV in both guises are a peach of a bike once given good bouncy bits.

Re: Pointy model differences ?
 

Why would the combustion be any more messy? Combustion is a very chaotic event anyhow.

The quicker you get the mixture burnt, the more energy you extract, so twin plugs are most always an advantage on larger capacity cylinders. Try driving an Alfa twin spark with a failed ignitor; the difference in power is very noticeable. The big problem is getting a second plug to fit in a useful position within a 4v head is very difficult.