140MPH KZ650?? (eBay)

whats redline for a 1300? at 9000rpms with a 160/17 tire i am coming up with 141.70mph. i found the trans ratios online for a 79' but it did not give engine specs. if it would pull 9500 rpm it would be 150mph, and with 120hp i'd kinda think it could on a good day.

i figure you can make just about any bike do whatever you want under labratory conditions which is prety much what the magazines and factorys do perfect temps,elevation(super tuned bikes:whistle: :whistle: )..... but here in the eal world where most of us spend our time me included it comes down to run what ya brung and hope its enough:evil: in the end it comes down to whos got the most going for him,but mostly whos the best rider i guess.ive spent more years than id like to remember trying to keep up with the kids down the street,now the only kid i really need to impress or scare the hell out of is myself i guess! (its coming slowly but surely! )

flht1997 wrote:

whats redline for a 1300? at 9000rpms with a 160/17 tire i am coming up with 141.70mph. i found the trans ratios online for a 79' but it did not give engine specs. if it would pull 9500 rpm it would be 150mph, and with 120hp i'd kinda think it could on a good day.

redline for a 1300 is 8500 but that rear tyre is huge. standing next to my Z1R it it is about another 3/4 inch taller the tire is a 130/90 Avon Venom the graph in the book is a quick and easy way to estimate the speed.

I don't remember the KZ1300 top speed, but in Cycle World they run 1/2 mile wide open I guess figuring a motorcycle will be going as fast as it's capable in that time. They call it top speed, but maybe more than 1/2 mile would be needed for absolute top speed. Katana was the first to 140 as far as I know. Very few motorcycles back then had the power to overcome wind and surpass the 130s. I'll find a test on a KZ1300 and compare in the next day or two. KZ1000MKII-121MPH, KZ1000ST-120mph, 1980 KZ1000 classic with FI 126 mph, KZ1000J 134, GPZ1100-Suzuki GS1100 135mph, GS1000 126mph were a few findings.

cant believe this thread is still going.

Why not? We do like to get the facts right here. Apparently you haven't figured out that you're dealing with some very experienced and knowledgeable people. A friend of mine used to always say, "When you know you don't know, then you know". Think about it.

kwkossick wrote:

cant believe this thread is still going.

Or, it's more likely that you can't believe that a site exists for a bunch of old clunkers that no one is interested in anymore? Right?

It seems as though you've had a chip on your shoulder since Day One. Trust me. You're not the first to be called on hyperbole (that's B.S. down on the farm) and certainly won't be the last. This group does a good job of vetting anyone who chooses to play fast and loose with the truth. We know these old war horses very well and what they're capable of. If you're ticked because some potential buyer was scared off of your auction because of what was written here, then let that be a lesson to be honest and forthright next time.

Now, before you burn your last bridge, you may wish to reconsider the attitude that you've displayed in this thread. If you look around there is a vibrant community surrounding the Kawasaki KZ models. You're welcome to stay and participate as a member in the community or you can be on the outside looking in.

The choice is yours.

NONB
Aaaa-Men Bruda. We are all full of BS at one time or another. We just get cought more often than not, here. I think that the most important thing to remember in a life lesson is, "It is not what you say, but how you say it"

KZ1300 in 1980 ran 139mph in the CW test, so darn close, but the Katana was the first to 140 the way CW did their tests at least.

N0NB wrote:

kwkossick wrote:

cant believe this thread is still going.

Or, it's more likely that you can't believe that a site exists for a bunch of old clunkers that no one is interested in anymore? Right?

It seems as though you've had a chip on your shoulder since Day One. Trust me. You're not the first to be called on hyperbole (that's B.S. down on the farm) and certainly won't be the last. This group does a good job of vetting anyone who chooses to play fast and loose with the truth. We know these old war horses very well and what they're capable of. If you're ticked because some potential buyer was scared off of your auction because of what was written here, then let that be a lesson to be honest and forthright next time.

Now, before you burn your last bridge, you may wish to reconsider the attitude that you've displayed in this thread. If you look around there is a vibrant community surrounding the Kawasaki KZ models. You're welcome to stay and participate as a member in the community or you can be on the outside looking in.

The choice is yours.

thats why Nate is a moderator,and the the rest of us are just moderated!

Some reference material . Check out some of the articles from the list on the top left of the page . www.kz650.info/

RonKZ650 wrote:

KZ1300 in 1980 ran 139mph in the CW test, so darn close, but the Katana was the first to 140 the way CW did their tests at least.

Not bad for a 700+lb (wet) bike (Plus a fat arse sitting on it) I had custom cams hard welded and reground for mine plus the Gpz750 pistons and the ZN1300 ported head with oversized valves. I will be very curious what this thing will do.