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Author Topic: 2008 KFX450 Modified  (Read 738 times)

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2008 KFX450 Modified
« on: October 17, 2012, 08:12:17 pm »
This was my prior ride.  The rod was found to be the weak point in the engine and after breaking it twice, I upgraded to the Zilla :D

Fuel Custom Intake's Dyno, 2009 dyno test, 92 degrees F, Hetrick Racing Porting, Hetrick Cams, CP Racing 13.1:1 piston, Jardine RT99 Exhaust, FCI Intake, 50% 91 Pump Fuel / 50% VP 110, Bored 44mm Throttle Body, Power Commander III, Falicon Supercrank & Knife Edge Rod.


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Re: 2008 KFX450 Modified
« Reply #1 on: October 17, 2012, 11:34:54 pm »
those r respectable #s
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1985 Yamaha Tri Z 250
2006 Suzuki LTR 450
2011 Suzuki Hayabusa

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Re: 2008 KFX450 Modified
« Reply #2 on: October 17, 2012, 11:40:24 pm »
For a 450 it was pretty fast and another 3rd gear dune machine.  Put it in 3rd and you could almost leave it there.  Loved that quad.  Had a wider axle and houser LT front a-arms along with Motowoz suspension.  Had the suspension dialed for the hills and I could wheelie that thing like nobodys business.  From a 1st gear slow wheelie up thru 5th gear.  Also loved wheeling that thru the large bowls.

Oh well just have to learn on the Zilla with almost no engine compression :D
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Re: 2008 KFX450 Modified
« Reply #3 on: October 18, 2012, 04:47:11 pm »
Ya those LTR450's are some quick SOB's.  Those were the ones that would usually beat me in drags.  62/40 is a respectable number for a 450.  But Garrett's got an advantage of having a shop and dyno :D  Most everybody else is bolt together and hope!
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Re: 2008 KFX450 Modified
« Reply #4 on: October 18, 2012, 05:29:24 pm »
The Unicam Honda 450R's run pretty good too!!
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Ain't ever seen it......but I have heard it.

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Re: 2008 KFX450 Modified
« Reply #5 on: October 18, 2012, 08:01:40 pm »
Yep, the 450's and 700's now have been around for a number of years and the builders have figured out how to get some pretty awesome power out of these quads.  Problem with this is the 450's are high strung from the factory to compete in motocross races.  The builders have punched these out to near 600cc with the supporting mods.... but that is all at a H U G E cost.  But speed costs.

I love pulling up to Olds or China wall and running my built Zilla up and down for a few passes then park.  Many people come by and are impressed that this 20+ year old technology is 1) still running and 2) runs as well as it does.
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Re: 2008 KFX450 Modified
« Reply #6 on: October 19, 2012, 04:24:35 am »
Racerz Edge in Tucson has a 128whp turbo Honda 450 that they race
<iframe width="560" height="315" src="http://www.youtube.com/embed/bX3NNMg_n4g" frameborder="0" allowfullscreen></iframe>
I still dont like the TRX450 however, the only Hondas I like have 2 or 3 wheels.

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1985 Yamaha Tri Z 250
2006 Suzuki LTR 450
2011 Suzuki Hayabusa
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