blown motor - Page 5 - Kawasaki KFX450 Forum

Extent Racing 21 · 01-18-2009, 08:12 PM

QUOTE (PIPO @ Jan 18 2009, 09:46 AM)

Quote:

I think is because these quads still pretty new and the problems are now surfacing.

idk, i respectively disagree, this problem is well known.

05greenmachine · 02-01-2009, 04:19 PM

I was talking with walsh about this problem and Cody Gibson has been going through falicon crank rods in about 10 hours too. Finally Walsh came out with there own crank rod that has held up 20+ hours so far with no breaking. And if anyone has seen Cody ride they know he isnt easy on motors! I just got my crank back from Walsh and retail on it is $450 installed on your crank.

masterp0606 · 02-02-2009, 01:53 AM

How long should I get on a 12.8:1 piston I didn't up it in the 13 range because I didn't want some reliability issues .

Of course in not racing it always balls to the wall. I usually trail ride with the occasional track ride and race.

Extent Racing 21 · 02-02-2009, 06:35 PM

QUOTE (masterp0606 @ Feb 2 2009, 12:54 AM)

Quote:

How long should I get on a 12.8:1 piston I didn't up it in the 13 range because I didn't want some reliability issues .

Of course in not racing it always balls to the wall. I usually trail ride with the occasional track ride and race.

well 12.5 is stock compression so you basically will get the same amount of time out of it as a stock piston.

masterp0606 · 02-02-2009, 10:09 PM

I thought stock on the atv was 12.1:1 and the dirt bike is 12.5:1

Extent Racing 21 · 02-04-2009, 08:14 PM

12.5

pipo · 02-04-2009, 09:39 PM

08-09 atv is 12.1, 08 db is 12.1 and 09 db is 12.5 (they decked the head to achieve 12.5, piston still the same).

masterp0606 · 02-04-2009, 11:15 PM

Thats what I thought PIPO

Extent Racing 21 · 02-05-2009, 06:20 PM

QUOTE (masterp0606 @ Feb 4 2009, 10:16 PM)

Quote:

Thats what I thought PIPO

my bad i thought it was 12.5

masterp0606 · 02-05-2009, 08:33 PM

It's all good.

02-02-2009, 01:53 AM	#43 (permalink)
masterp0606 Member Join Date: Jan 2009 Location: Southern Illinois Posts: 49	How long should I get on a 12.8:1 piston I didn't up it in the 13 range because I didn't want some reliability issues . Of course in not racing it always balls to the wall. I usually trail ride with the occasional track ride and race. __________________ 2008 kfx 450 White and Black 13 In dasa pipe FCI Intake Pc3 KX cams Je piston 12.8:1 Other Toys 2004 Pontiac GTO Mods coming soon Pocket rocket 49cc High performance carb,and Nos LOL

02-02-2009, 10:09 PM	#45 (permalink)
masterp0606 Member Join Date: Jan 2009 Location: Southern Illinois Posts: 49	I thought stock on the atv was 12.1:1 and the dirt bike is 12.5:1 __________________ 2008 kfx 450 White and Black 13 In dasa pipe FCI Intake Pc3 KX cams Je piston 12.8:1 Other Toys 2004 Pontiac GTO Mods coming soon Pocket rocket 49cc High performance carb,and Nos LOL

02-04-2009, 09:39 PM	#47 (permalink)
pipo Senior Member Join Date: Aug 2007 Location: Yelm, WA Posts: 268	08-09 atv is 12.1, 08 db is 12.1 and 09 db is 12.5 (they decked the head to achieve 12.5, piston still the same). __________________ YFZ 450SE CP/CCP/FCI/Fox Evol DSC/Fox Podium/Hiper/Houser/JD/Nmotion/REM/Team axle

02-04-2009, 11:15 PM	#48 (permalink)
masterp0606 Member Join Date: Jan 2009 Location: Southern Illinois Posts: 49	Thats what I thought PIPO __________________ 2008 kfx 450 White and Black 13 In dasa pipe FCI Intake Pc3 KX cams Je piston 12.8:1 Other Toys 2004 Pontiac GTO Mods coming soon Pocket rocket 49cc High performance carb,and Nos LOL

02-05-2009, 08:33 PM	#50 (permalink)
masterp0606 Member Join Date: Jan 2009 Location: Southern Illinois Posts: 49	It's all good. __________________ 2008 kfx 450 White and Black 13 In dasa pipe FCI Intake Pc3 KX cams Je piston 12.8:1 Other Toys 2004 Pontiac GTO Mods coming soon Pocket rocket 49cc High performance carb,and Nos LOL

02-01-2009, 04:19 PM	#42 (permalink)
05greenmachine Member Join Date: Oct 2006 Posts: 86	I was talking with walsh about this problem and Cody Gibson has been going through falicon crank rods in about 10 hours too. Finally Walsh came out with there own crank rod that has held up 20+ hours so far with no breaking. And if anyone has seen Cody ride they know he isnt easy on motors! I just got my crank back from Walsh and retail on it is $450 installed on your crank.

02-04-2009, 08:14 PM	#46 (permalink)
Extent Racing 21 Member Join Date: May 2008 Posts: 66	12.5

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