Question about big bore, and top speed

1373 Views 5 Replies 5 Participants Last post by benprobst, Feb 21, 2009

Modidy

Discussion Starter · Feb 18, 2009

I am curious to know what kind of speeds are achievable with the 700cc kits in the SV's? I am curious because of some of the tracks in the area. The two in particular are Eagle's Canyon, and TWS, both of which are here in Texas. Eagle's Canyon for example, has a 2000ft back straight. On my 02 GSXR750, I was able to hit somewhere in the neighborhood of 150mph. Your coming off a double apex turn, and carrying a decent amount of speed. Liter bike's are up around 160+ coming across there. It's also a slight upgrade to it.

Would a 700cc Superbike build allow you into that 140-150 range?
Thanks, Mo

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Bellicose42

· #2 · Feb 18, 2009

The stock gearing on the 650s should have you hitting ~140mph at redline in 6th, which I've hit after about a mile (from stand still), so with the added hp you might get there a bit faster, but I'm not too sure about in 200ft.

The SV-Cup guys will hit about that speed at the end of the Andretti Straight at Mosport, but that's 3/4 of a mile (not flat or really straight) and they're limited to 75hp and coming off a slow decreasing double apex.

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Cowboy 6

· #3 · Feb 18, 2009

It will depend on what else you have done to your bike. Just going 3mm over will not do all that much.

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Kris87

· #4 · Feb 18, 2009

an 80hp ss SV tops out at about 140mph. a race built 700 kit should give you close to 90hp, and i'd speculate another 7-8mph on top.

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Modidy

Discussion Starter · #5 · Feb 20, 2009

Thanks guys, I figure that build would cost me well more than it's worth. To achive those upper speeds, it sounds like I would be replacing the crank with a high dollar part, or going through a few a year. I should have added that I will be in the 225lb area, and I dobut my SV will hit 140 without putting down at least 80hp.
Mo

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benprobst

· #6 · Feb 21, 2009

Modidy said:
Thanks guys, I figure that build would cost me well more than it's worth. To achive those upper speeds, it sounds like I would be replacing the crank with a high dollar part, or going through a few a year. I should have added that I will be in the 225lb area, and I dobut my SV will hit 140 without putting down at least 80hp.
Mo

You can build very reliable SV motors with stock cranks at or around 90 hp. My SV superbike ran aroun 149-153 with my 6'6 240 lb self on it at road america.

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