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Discussion Starter · #1 ·
performance in put
on the kfx .I bought mine in April and ride it in the dunes, and this is what I have done for performance, first off I broke the engine cases the counter shaft broke out of the case, found the chain tension is too tight, after setting it to the factor spec. need to run it looser and a chain slider,
performance to the engine is a Dasa 13" exhaust system, throttle body bored out to 44mm, a LRD programer,dasa grind, web cams mid to top end power also a custom intake system, dyno at 52.7 hp and 35ft lbs torque,on a dyna jet dyno. this set up with a 37 tooth rear sprocket and a 14 tooth front now this is a fast machine, and it will beat any yfz honda or ltz hands down.
 

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Where do you live and where did you get your throttle bored at? Welcome to the site

Larry
 

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Discussion Starter · #3 ·
Dasa racing in Calif. bored the throttle body, it cost $200. I live in oregon, ride the oregon dunes.
 

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Wow! 52.7hp, but why only a 37T? With that much power for the dunes I'd go wit a 15/38 or a 14/35 combo.
 

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Sounds like a great running bike. We have been testing taper bores throttle bodies on built bikes. We are seeing just over 2 HP on built bikes. I will be dynoing OVERSIZED throttle bodies next week on a stock bore bike. i will post my resualts. The throttle bodies service will be $179.99

FUELATV
 

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Discussion Starter · #7 ·
QUOTE (PIPO @ Dec 7 2007, 12:22 PM) index.php?act=findpost&pid=4720
Wow! 52.7hp, but why only a 37T? With that much power for the dunes I'd go wit a 15/38 or a 14/35 combo.



cam profile from web cam



first dyno run before fine tuning, should be around 55 hp when done, stock bore with some port work done with this cam profile and exhaust system, we also found the 37 tooth rear works great for tree shot hill climbs, we found that the 14/36 was too tall for tree shots. It worked well for racing and dunes.








here is my 450 in action
 

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QUOTE (king Sandman @ Dec 11 2007, 02:04 AM) index.php?act=findpost&pid=4790


cam profile from web cam



first dyno run before fine tuning, should be around 55 hp when done, stock bore with some port work done with this cam profile and exhaust system, we also found the 37 tooth rear works great for tree shot hill climbs, we found that the 14/36 was too tall for tree shots. It worked well for racing and dunes.

here is my 450 in action

nice photo.. but those rear tires on 10" rims are just hole diggers.. maybe a 1/2 way decent tire/rim for duning but a joke for hill shooting. Get some haulers on a 8" daimeter rim.
 

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Discussion Starter · #9 ·
QUOTE (Fast1 @ Dec 10 2007, 09:27 PM) index.php?act=findpost&pid=4791
nice photo.. but those rear tires on 10" rims are just hole diggers.. maybe a 1/2 way decent tire/rim for duning but a joke for hill shooting. Get some haulers on a 8" daimeter rim.
your right, I will get some tires this spring.
 

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QUOTE (Fast1 @ Dec 10 2007, 11:27 PM) index.php?act=findpost&pid=4791
nice photo.. but those rear tires on 10" rims are just hole diggers.. maybe a 1/2 way decent tire/rim for duning but a joke for hill shooting. Get some haulers on a 8" daimeter rim.
Keep 10" rims. 8s suck.
 
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