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is it worth making a f2 as fast as a 750?

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Old Jun 16, 2011 | 12:59 AM
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Ok guys ive been riding my f2 600 for 4 months and i want more power.. debating weather or not to sell this one and getting a newer bike(750cc) but they do cost a pretty pennie. So my questions is, if its worth modding my f2 to keep up with a new 750??
 
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Old Jun 16, 2011 | 02:55 AM
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You won't get an F2 to keep up with my 750 with equally skilled riders on them, or even moderately skilled riders with minimal track experience.

I made the jump myself, and the GSXR 750 is an amazing bike and there is simply nothing you can do to get an F2 in the same ball game as the 750's.
 
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Old Jun 16, 2011 | 09:36 AM
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Pretty hard to beat the "no replacement for displacement" saying. Is it possible? Yes. But a bigger motor won't work as hard as a highly tuned smaller motor, etc.
 
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Old Jun 16, 2011 | 01:54 PM
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Originally Posted by JesseAwesome
You won't get an F2 to keep up with my 750 with equally skilled riders on them, or even moderately skilled riders with minimal track experience.

I made the jump myself, and the GSXR 750 is an amazing bike and there is simply nothing you can do to get an F2 in the same ball game as the 750's.
that big of a difference huh? heck i might even try to get a 900rr just cause that would work out better for my wallet

Originally Posted by buickid
Pretty hard to beat the "no replacement for displacement" saying. Is it possible? Yes. But a bigger motor won't work as hard as a highly tuned smaller motor, etc.
i was just thinking of putting in some engine work but wasnt trying to go over 1k budget
 
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Old Jun 16, 2011 | 05:19 PM
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Originally Posted by JesseAwesome
You won't get an F2 to keep up with my 750 with equally skilled riders on them, or even moderately skilled riders with minimal track experience.
Wise words from the Wise One. ...And we can't all be Miguel Duhammel, can we?

Originally Posted by JesseAwesome
I made the jump myself, and the GSXR 750 is an amazing bike and there is simply nothing you can do to get an F2 in the same ball game as the 750's.
Short of "shoehorning" a 900RR engine into the frame, this is also true. But, the engine alone wouldn't be enough; you would have to completely upgrade your suspension and braking systems, as well. The cost-to-benefit just isn't there; especially when a well-maintained ZX-7R or GSX-R750 can be had for the same--or less--cash...
 
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Old Jun 16, 2011 | 06:12 PM
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Originally Posted by up_in_boost
Ok guys ive been riding my f2 600 for 4 months and i want more power.. debating weather or not to sell this one and getting a newer bike(750cc) but they do cost a pretty pennie. So my questions is, if its worth modding my f2 to keep up with a new 750??

You wont be able to mod your f2 to keep up with even a new CBR 600. Just not in the cards. Save your cash and get yourself a newer bike.
 
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Old Jun 16, 2011 | 06:17 PM
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With $5K (after bike purchase) and some smart work you can make a 110hp, 430lb w/ a full tank of gas bike with a penkske rear and AK-20 cartridges, big brakes, bla bla bla. Basically, a bike which is about as good as an 02-05 stock 600cc sport bike or a 90's 750 (albeit with better suspension). 5K will get you a great shape 2005 R1 or K5 GSXR-1K, and 7K will get you a great literbike or 750 from around 08-09, which will absolutely DESTROY any F2.

Truth be told, rider skill is huge. The difference between moderately skilled track day types and AFM plate holders who are back packers on a track like thunder hill are around 20-30 seconds on a track a 600 with a respectable (back packer AFM skill) should pull at least a 2:05 on a new stock 600 or around 1:55 on a literbike. The F2 will be about 10 seconds slower than a new 600, and maybe 5 on a slower circuit like infineon. The speed difference of a good rider versus an average rider is much bigger than between 600's.

A new gsxr 750 though weighs 425lbs with gas, makes 148 hp, 64 ft-lbs of torque and big power from 2.5K up, with world class suspension and brakes from the factory, all just for 12K+ dealer fees. You can't make an F2 that fast. With a big bore, high compression build ($2K of engine work), jetted full exhaust ($800), you'll make 125 at the crank. $5K will get you similar quality suspension, and another several hundred of tires and tuning will be required to get it dialed in. But it will still be much more compliant, heavier and slower than any post 08 600 from the factory, or a 98+ GSXR 750. The F2 is one hellova bike and still a threat on the street. It's just outclassed and old. It's over 20 years old now, you can't expect it to keep up. Make some sensible upgrades and just ride
 
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Old Jun 16, 2011 | 06:22 PM
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Also, if the power of the F2 is not enough, your clutch is shot, your jetting sucks, your bike is completely clapped out or you're not ringing the s$%t out of your bike. 100hp will do one hell of a lot. A reasonably sized (200lb) rider can get a ~12sec 1/4 mile at around 115mph. This is all from memory, but my fat (250lb) *** pulled a 12.6sec 1/4 on my F2 (one cylinder ~10psi down, jetted, full exhaust, 49 state cam, 100K+ miles on the mill) at sea level on a 95F day. These aren't slow bikes, 100hp is enough to punch your bike through a wall, and is more power than the old suspension on the F2 can honestly handle.
 
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Old Jun 16, 2011 | 11:33 PM
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I agree with JT, If your F2 is not giving you sh*t eating grins every time you shred out of a corner at 10 K RPM there is either something wrong with your bike or you need to work on your riding to extract the power from that thing. The F2 is a mighty machine and will keep pace with just about anything in the twisties with a skilled pilot. 100HP in a 400 lb (dry) package is a recipe for some serious fun. Even completely stock these bikes are an incredible hoot.
 
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Old Jun 16, 2011 | 11:49 PM
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Originally Posted by jtkardel
Also, if the power of the F2 is not enough, your clutch is shot, your jetting sucks, your bike is completely clapped out or you're not ringing the s$%t out of your bike. 100hp will do one hell of a lot. A reasonably sized (200lb) rider can get a ~12sec 1/4 mile at around 115mph. This is all from memory, but my fat (250lb) *** pulled a 12.6sec 1/4 on my F2 (one cylinder ~10psi down, jetted, full exhaust, 49 state cam, 100K+ miles on the mill) at sea level on a 95F day. These aren't slow bikes, 100hp is enough to punch your bike through a wall, and is more power than the old suspension on the F2 can honestly handle.
Speaking of clutches lol, my clutch pretty much went out today lol.. Well the power is good enough to ride around on. i just want to feel that HOLLY **** feeling again when i rip on it lol. 12.6 is pretty damn good.. My elevation here is 4,500 so that doesnt help much.

Originally Posted by jtkardel
With $5K (after bike purchase) and some smart work you can make a 110hp, 430lb w/ a full tank of gas bike with a penkske rear and AK-20 cartridges, big brakes, bla bla bla. Basically, a bike which is about as good as an 02-05 stock 600cc sport bike or a 90's 750 (albeit with better suspension). 5K will get you a great shape 2005 R1 or K5 GSXR-1K, and 7K will get you a great literbike or 750 from around 08-09, which will absolutely DESTROY any F2.

Truth be told, rider skill is huge. The difference between moderately skilled track day types and AFM plate holders who are back packers on a track like thunder hill are around 20-30 seconds on a track a 600 with a respectable (back packer AFM skill) should pull at least a 2:05 on a new stock 600 or around 1:55 on a literbike. The F2 will be about 10 seconds slower than a new 600, and maybe 5 on a slower circuit like infineon. The speed difference of a good rider versus an average rider is much bigger than between 600's.

A new gsxr 750 though weighs 425lbs with gas, makes 148 hp, 64 ft-lbs of torque and big power from 2.5K up, with world class suspension and brakes from the factory, all just for 12K+ dealer fees. You can't make an F2 that fast. With a big bore, high compression build ($2K of engine work), jetted full exhaust ($800), you'll make 125 at the crank. $5K will get you similar quality suspension, and another several hundred of tires and tuning will be required to get it dialed in. But it will still be much more compliant, heavier and slower than any post 08 600 from the factory, or a 98+ GSXR 750. The F2 is one hellova bike and still a threat on the street. It's just outclassed and old. It's over 20 years old now, you can't expect it to keep up. Make some sensible upgrades and just ride
Good thing i asked this question on here. Yeah i rather buy a newer bike if its gonna take that much or not close at all... Ill get in more trouble with more power anyways lol. this is my first bike and i love it plus it looks pretty good too
 
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