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Old 02-23-2008, 11:01 PM   #41
witchdoctor575
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Quote:
Originally Posted by tomLSTD View Post
Not quite. While they don't race in the same class, in endurance races, they are all out there at the same time. I have "killed" p-lenty of i-4 600s of all vintages on our modded SV. 84hp, slipper clutch, flat slides, GSXR Race Tech front end with Penske shock, and you have a middleweight killer! A lot of the 600s will pull slightly on the straights, but some don't (it's all about when you get on and off the throttle in and out of the corners).

Why the SV?

Interchangeable parts with GSXR (easy swaps, GSXR parts are easy to find).

Handles exceptionally well for a damper rod front end- it's also cheaper to work over the stock forks vs cartridge forks. Most SV racers keep their stock forks (change springs, gold valves, oil change, etc but stock size and type) and swear by them even in superbike classes where they could change the front end if they wanted.

Crashability. You can toss these bikes down the track over and over again and won't have any issues with frame or other major hard parts. They're also easy to fix, and parts are easy to find (see my first point about interchangeability).

Tires, easy on tires! We race (and won, with some 2nd and 3rds too) on one set of tires to our 600cc i-4 bike's 2 sets per race (endurance racing).

Fuel economy too, don't forget that. We would use about 3 gallons per hour, and about 3.5 gallons/ hr at TWS (Texas World Speedway) for endurance racing. With our engine, we use cut race fuel, and that equates to money saving when you don't have an engine that guzzles the stuff!

Brake mods and suspension mods on this bike are cheap and easy. Throw a GSXR master cylinder and a Race Tech front end with GSXR shock for a grand total of about $400, and you're ready to race. The '05 and up SV has a better braking system than the previous years too (stock).

Most folks will do juuuuust fine on a completely stock SV at the track as well, but most will also soon "out grow" that suspension with increased seat time at the track too.

fuel mileage is king on endurance... leave the rc51 out to pasture in that event,lol.
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Old 02-23-2008, 11:17 PM   #42
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For the record too, you won't find many (or any) SVs out there with more than about 85 horsepower. You cross that line and you're looking at a grenade.

Taking a stock SV, the best mods to make that will keep your pocketbook happy and engine builder sad is this:

First gen:
- "Cam swap", putting the stock intake cam on the exhaust side and getting an intake cam from a second gen SV and putting that on the intake side of the first gen. That is exactly the same thing as the "Stage II" Yoshimura cam set! Same dimensions, lift/ duration/ lobe centers/ etc.
- Jet kit with BMC pod filters/ stock CV carbs (flat slides will get a bit more, but they are temperamental)
- Full M4 exhaust
-Just with these engine mods, you can see a real 5-8 horsepower difference.

That'll get you some respectable change in hp, and will not break the bank at all. With those mods, a competent rider can hang with most of the middle weight riders at a track day (or even endurance race)- of course that's assuming that you've done some suspension work too.

The second gen can get the same results with the same mods, with exception of course to the carb mods. Substitute a PCIII for the jet kit. I think that most of the SV racers are doing the same cam swap for the second gen bike, but I've never really kept up with that.
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Old 02-24-2008, 11:01 AM   #43
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Here is why they are popular.

~95% of riders will ride better on an SV. It is easier to brake later, get on the gas sooner, get through corners faster. Besides that, there are the cost issues mentioned.

~60% of motorcyclists have ego issues and can't swallow owning a chick bike. It's slow, it's not that pretty, it certainly doesn't have the paddock appeal of a new sportbike.

Another 10% or so genuinely enjoy going slower and trying to tame a high horsepower bike with their limited talents. They might get the same or even slower laptimes despite the HP boost making up for it on the straights.

The ~25% left account for the SVs you see at the track And the last 5% badasses who actually know how to ride a big bike well.

IMHO of course
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Old 02-24-2008, 11:38 AM   #44
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