How to make a 650r fast - Page 4 - KawiForums - Kawasaki Motorcycle Forums
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post #31 of 65 (permalink) Old 12-11-2012, 11:40 AM
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not at all; 1) if you aren't idiotic you would tell your insurance company you do have mods in case something happens so they can reimburse you.
2) if you have mods on your bike and another party is paying for it, they will pay you for your shit unless you dont say shit and just take whatever
That's quite an assumption, isn't it?

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post #32 of 65 (permalink) Old 12-11-2012, 11:44 AM
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My friend who totalled his bike had full coverage including add on coverage. He had like 3000 dollars in add on coverage so when he wrecked he showed the adjuster his gear and a list of aftermarket stuff. So he got the money for his full coverage plus money to replace his gear and exhaust and stuff.

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post #33 of 65 (permalink) Old 12-11-2012, 11:44 AM
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Stock 636 or 600 has around 120 - 130 bhp.

The best that you get out of a modified 650 is around 80 bhp in any sort od street rideable form. There was a project to get 90 bhp out of one, but I don't think it succeeded, and if it did the 600 still has over 30% more power and about 30 lbs less weight.

If you want to go faster, get a faster bike, but if you want to see how fast a 650 can be made to go, which is very different thing, then good luck.

Rob
Guys in Europe regularly get over 90 HP out of them, but that's a heavily reworked motor with aftermarket rods and pistons, polished knife edged crank, lots of head work, etc. Of course that's a race fuel only motor that is only good for about one season before a rebuild. In race trim a 650 and a 600 weigh about the same, the EX650 has a lot of heavy parts and other useless crap that can be replaced or removed.

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post #34 of 65 (permalink) Old 12-11-2012, 02:39 PM
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Why do people keep saying "dont mod the 650"

650 is not a bad platform and you can get decent power from it for what you would lose in selling it + the added cost and transaction fees of another bike. And most bikes that people are talking about have insurance that is like 2-3x what you pay for a 650. So really the whole "youre wasting money" thing is bogus. 2 years worth of a ZX14R's added insurance costs over a 650's, you could probably have a motor built by Spears Enterprises depending on where you live (I know I could)

Plus a faster bike = a heavier bike (if we are talking about ZX14s) which the OP might not want.

OP, best bet, contact an expert like Spears Enterprises and tell them what you want. Thats prob the most straightforward path.

http://www.spearsenterprises.com

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Last edited by sportyaccordy; 12-11-2012 at 02:42 PM.
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post #35 of 65 (permalink) Old 12-11-2012, 02:48 PM
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So you spend $2,500 to have a motor built for your 650 that makes 80 hp and burns VP MR4.4 at $65 for a 5 gallon pail and has to be rebuilt every year? Sounds practical.

Nothing wrong with putting better suspension and brakes on a 650, as that doesn't compromise its usefulness or what you can do with it. Chasing big horsepower out of a 650 twin street bike is a silly endeavor, though. It still won't be as fast as a stock 600 and will now be less reliable to boot.

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post #36 of 65 (permalink) Old 12-11-2012, 03:26 PM
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So you spend $2,500 to have a motor built for your 650 that makes 80 hp and burns VP MR4.4 at $65 for a 5 gallon pail and has to be rebuilt every year? Sounds practical.

Nothing wrong with putting better suspension and brakes on a 650, as that doesn't compromise its usefulness or what you can do with it. Chasing big horsepower out of a 650 twin street bike is a silly endeavor, though. It still won't be as fast as a stock 600 and will now be less reliable to boot.
I agree , if you want a bike for the track then get a 600 and you can go as fast you want , and you don't need insurance.

The 650 strength is it's fuel economy , low end torque , low insurance cost and good looks , instead of ruining the strengths by making the fuel efficiency go down to achieve another 10-15 mph on the top end and half a second on the quarter mile , instead work on making the strengths better, like invest on its looks , suspension and brakes.

The 650 does a solid 130 mph on a straight lane with low wind , you really don't need to be going any faster than that , and it does the quarter on mile on low 12s which is enviable by most cars on the street ,all of this while doing an impressive hybrid-car comparable 50-55 mpg.

I have many people pointing in awe as I ride by and no passenger that has been on my bike has complained about the bike being too slow.

So why mess with a good thing?

Everything I consider getting a faster bike I think about the added fuel costs , added insurance costs , and more money to buy to begin with for the 1% of riding I do once in a while since I have not been to track.

One day I plan on taking my baby to the track to see how it does and maybe there it will be outshined but I keep up with other 600s super sports on group rides anyhow and I pass all of them on the turns since most of these guys only know how to go fast on a straight road and have no experience going around turns or are too scared to lean the bike.

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post #37 of 65 (permalink) Old 12-11-2012, 05:19 PM
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So you spend $2,500 to have a motor built for your 650 that makes 80 hp and burns VP MR4.4 at $65 for a 5 gallon pail and has to be rebuilt every year? Sounds practical.

Nothing wrong with putting better suspension and brakes on a 650, as that doesn't compromise its usefulness or what you can do with it. Chasing big horsepower out of a 650 twin street bike is a silly endeavor, though. It still won't be as fast as a stock 600 and will now be less reliable to boot.
Street bikes are not beat on as hard as race bikes. Race bikes are WOT way more than street bikes. I don't think race fuel or rebuilds would be necessary for the dude doing 3-4 track days a year and commuting on his 650 otherwise... I doubt too many racers are commuting on their built super twins

Plus I think you could get the motor built to have a compromise more towards reliability while still making decent power. 90HP is a bit much but getting it to breathe a little more up top and put down 75-80HP doesn't seem that crazy to me. Most folks are not going to call on that power a lot, but to me at least it would be nice to have.

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post #38 of 65 (permalink) Old 12-11-2012, 07:42 PM
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No, you will need race gas because you will need a fuckton of compression to make that kind of power out of a 650. Race gas isn't for making more power on a stock motor, it's because a superbike motor will not run on anything else. You could do some mild head work and swap cams on an EX650 and make a bit more power, but it's still going to get stomped by an old F2 or FZR600 that already makes 90 hp stock. So in reality you would have spent a ton of money to make a reliable bike less reliable and only slightly not as slow.


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post #39 of 65 (permalink) Old 12-11-2012, 07:59 PM
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Originally Posted by RacinJason44 View Post
No, you will need race gas because you will need a fuckton of compression to make that kind of power out of a 650. Race gas isn't for making more power on a stock motor, it's because a superbike motor will not run on anything else. You could do some mild head work and swap cams on an EX650 and make a bit more power, but it's still going to get stomped by an old F2 or FZR600 that already makes 90 hp stock. So in reality you would have spent a ton of money to make a reliable bike less reliable and only slightly not as slow.


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But would he hit the 11's? Because that was his question, not which bike is faster.

Bunch of negative nancys in here, and 2 years ago too.

I would think with just a lowering link and strapping the front would get him a good bit of time in the quarter. but I'm thinking he probably doesn't even post here anymore.

Last edited by WhoUtink; 12-11-2012 at 08:01 PM.
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post #40 of 65 (permalink) Old 12-11-2012, 08:04 PM
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I wasn't really directing my comments at the OP obviously, since I was quoting someone else.


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