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kx450 2012 problems

Stompin

C100

Posts: 20

Joined: 3/5/2012

Location: reno, NV USA

7/7/2012 3:20 PM

every 2-3 races have to replace head gasket , what a piece of shit.
tried resurfacing head
engine ice
1.6 cap
frustrating after coming from yamaha..

tapkawiman

C100_imagescawnsmhm

Posts: 166

Joined: 4/1/2008

Location: Neosho, MO USA

7/7/2012 3:59 PM

VitalMX>Forum>Race Shop(Since you didnt learn on your last post)

Everybody wants to be number #1.........but ah.......when it comes time to doing it and making it happen they dont really really want it....
Ricky Carmichael

gutter shield 29

C100_ku_logo

Posts: 164

Joined: 3/25/2011

Location: Shawnee Mission, KS USA

7/7/2012 4:39 PM

I have one too, I feel your pain. I havent had any trouble yet with my head gasket although I have a friend having that same problem with his.
I have been having prob;ems with my oil drain plugs leaking. I had to re-tap it after changing the oil after only 3 times.
I love riding the bike but I don't think it's built as good as my Yamaha's.

Stompin

C100

Posts: 20

Joined: 3/5/2012

Location: reno, NV USA

7/7/2012 4:41 PM

tapkawiman wrote: VitalMX>Forum>Race Shop(Since you didnt learn on your last post)

why is it that of a deal

ehr400

C100_bike_1

Posts: 1477

Joined: 4/1/2008

Location: Dundee, MI USA

7/7/2012 5:53 PM

I know 2 guys whose cranks went out at 18.7 hours and 23.2 hours. Vet B riders too.

TeamGrnRacer99

C100_115166800_1238630815

Posts: 494

Joined: 4/1/2008

Location: Bethlehem, PA USA

7/7/2012 6:02 PM

no issues with mine, not a ton of hrs. on it since i only get out Sundays to race. no complaints from the people I've sold them too either. best 450 I've ever ridden

Officially the Slowest Team Green Support Rider in History 5 years running

85,87,88 KX125
03.05 KX250
04 KX250F
06,07,08,09,10,11,12,13 KX450
05 KLX110
07 ZX6
09 Monster ZX6
04 Aprilia RS Fiddy

scott_nz

C100

Posts: 946

Joined: 4/1/2008

Location: Pukekohe, NZL

7/7/2012 6:06 PM

TeamGrnRacer99 wrote: no issues with mine, not a ton of hrs. on it since i only get out Sundays to race. no complaints from the people I've sold them too either. best 450 I've ever ridden

i race mine, and have sold a heap of them, and never had an issue with an 2012 or any of the earlier ones as well,

crashnburn11

C100_1425537_3520753755215_661792248_n_1389554201

Posts: 1235

Joined: 10/19/2010

Location: CA, USA

7/7/2012 6:17 PM

Love mine, no issues

xnationalwrench

C100_618115028_1203301146

Posts: 2425

Joined: 2/17/2008

Location: Urbana, IL USA

7/7/2012 6:46 PM
Edited Date/Time: 7/7/2012 9:14 PM

Stompin wrote: every 2-3 races have to replace head gasket , what a piece of shit.
tried resurfacing head
engine ice
1.6 cap
frustrating after coming from yamaha..

Just a couple of questions, is the leak located at the same place everytime? You said you resurfaced the head? Did you you check the mating surface on the cylinder itself? Have you replaced the locating dowels between the head and cylinder? Then you might go to a 2.0 cap.

machine

C100_canard_profile_pic

Posts: 3535

Joined: 1/5/2011

Location: Wake Forest, NC USA

7/7/2012 6:48 PM

No problems here, it's a great bike so far.

Vital MX, the hangout for old, bitter and disgruntled 2-stroke fans

centralcalmx

C100_134759800_1293945968

Posts: 65

Joined: 4/1/2008

Location: Madera, CA USA

7/7/2012 7:34 PM

No issues but the rider with mine.

Info for Racing in Central California
www.mxpics.net
OTHG 696s

Stompin

C100

Posts: 20

Joined: 3/5/2012

Location: reno, NV USA

7/8/2012 7:21 AM

Stompin wrote: every 2-3 races have to replace head gasket , what a piece of shit.
tried resurfacing head
engine ice
1.6 cap
frustrating after coming from yamaha..

xnationalwrench wrote: Just a couple of questions, is the leak located at the same place everytime? You said you resurfaced the head? Did you you check the mating surface on the cylinder itself? Have you replaced the locating dowels between the head and cylinder? Then you might go to a 2.0 cap.

ya resurfaced head . put new cylinder on also. theirs actually no evidence of water leakage other than low antifreeze in radiator
after each ride . i will try the dowels next time also

TerryK

C100_tiger_lacey_reno_ax_lites_winner_1388545912

Posts: 9684

Joined: 8/17/2006

Location: CAN

Moderator

7/8/2012 7:24 AM

Stompin wrote: every 2-3 races have to replace head gasket , what a piece of shit.
tried resurfacing head
engine ice
1.6 cap
frustrating after coming from yamaha..

xnationalwrench wrote: Just a couple of questions, is the leak located at the same place everytime? You said you resurfaced the head? Did you you check the mating surface on the cylinder itself? Have you replaced the locating dowels between the head and cylinder? Then you might go to a 2.0 cap.

Stompin wrote: ya resurfaced head . put new cylinder on also. theirs actually no evidence of water leakage other than low antifreeze in radiator
after each ride . i will try the dowels next time also

Lol, it's not a leaky head gasket, it's just puking out of the overflow. You need a new rad cap. Shame you wasted all that time and money on parts.



Chuck Norris is 1/8th Scottish. This has nothing to do with ancestry, the man ate a fucking Scotsman!

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