2024 Kawasaki KX450 and KX450X

avidchimp
Posts
5784
Joined
7/9/2008
Location
EGL, MN, USA
1/30/2024 11:25am
Brent wrote:
So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals...

So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals were pressed too tight. On the right is a Honda 450 crank - it has spacers and some play, and the crank on the left is from my Kawi 450- notice zero tolerance between the crank and the rod.

72826835695  5E76C29D-69CE-4BD8-B993-1A7144558183 1

Oofff... Dry

CBE
Posts
137
Joined
12/23/2019
Location
Minersville, PA, USA
1/30/2024 11:33am
Brent wrote:
So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals...

So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals were pressed too tight. On the right is a Honda 450 crank - it has spacers and some play, and the crank on the left is from my Kawi 450- notice zero tolerance between the crank and the rod.

72826835695  5E76C29D-69CE-4BD8-B993-1A7144558183 1

Kawi is a plain bearing crank. Honda is a roller bearing. KTM uses plain bearing and would be a better reference. I don’t know the tolerance but should be available in the shop manual.

6
Vols
Posts
41
Joined
5/24/2023
Location
Knoxville, TN, USA
1/30/2024 12:16pm
Brent wrote:
So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals...

So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals were pressed too tight. On the right is a Honda 450 crank - it has spacers and some play, and the crank on the left is from my Kawi 450- notice zero tolerance between the crank and the rod.

72826835695  5E76C29D-69CE-4BD8-B993-1A7144558183 1

CBE wrote:
Kawi is a plain bearing crank. Honda is a roller bearing. KTM uses plain bearing and would be a better reference. I don’t know the tolerance...

Kawi is a plain bearing crank. Honda is a roller bearing. KTM uses plain bearing and would be a better reference. I don’t know the tolerance but should be available in the shop manual.

When you say plain bearing, do you mean ball bearing or an actual plain bearing with no rolling parts in it? 

FGR01
Posts
6115
Joined
10/1/2006
Location
USA
Fantasy
1/30/2024 1:37pm
Brent wrote:
So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals...

So, our motor guy pulled the crank and noticed it was manufactured with no free play on the connecting rod- it appears that the crank journals were pressed too tight. On the right is a Honda 450 crank - it has spacers and some play, and the crank on the left is from my Kawi 450- notice zero tolerance between the crank and the rod.

72826835695  5E76C29D-69CE-4BD8-B993-1A7144558183 1

CBE wrote:
Kawi is a plain bearing crank. Honda is a roller bearing. KTM uses plain bearing and would be a better reference. I don’t know the tolerance...

Kawi is a plain bearing crank. Honda is a roller bearing. KTM uses plain bearing and would be a better reference. I don’t know the tolerance but should be available in the shop manual.

Vols wrote:

When you say plain bearing, do you mean ball bearing or an actual plain bearing with no rolling parts in it? 

Actual plain bearing, like conrods in a car engine.  KTM uses plain bearing with no thrust washers, same as that KX crank.

Plain bearings, of course, rely solely on oil pressure and the oil film on the bearing.  It appears Brent's bike lost all oil pressure when the pump gear broke so the conrod bearing quickly overheated and seized.

4

The Shop

Brent
Posts
5840
Joined
8/16/2006
Location
Temecula, CA, USA
1/30/2024 3:02pm
FGR01 wrote:
Actual plain bearing, like conrods in a car engine.  KTM uses plain bearing with no thrust washers, same as that KX crank. Plain bearings, of course...

Actual plain bearing, like conrods in a car engine.  KTM uses plain bearing with no thrust washers, same as that KX crank.

Plain bearings, of course, rely solely on oil pressure and the oil film on the bearing.  It appears Brent's bike lost all oil pressure when the pump gear broke so the conrod bearing quickly overheated and seized.

That has kind of been the consensus of people that I have asked about this problem, the oil pump failure started a cascade of problems that resulted in the crank failure. 
 

I’ll say it again, this motor had less than 10 hours and had never been opened, and had three oil and filter changes before it failed….

mxb2
Posts
22437
Joined
6/15/2010
Location
Bowie, MD, USA
1/30/2024 3:14pm
FGR01 wrote:
Actual plain bearing, like conrods in a car engine.  KTM uses plain bearing with no thrust washers, same as that KX crank. Plain bearings, of course...

Actual plain bearing, like conrods in a car engine.  KTM uses plain bearing with no thrust washers, same as that KX crank.

Plain bearings, of course, rely solely on oil pressure and the oil film on the bearing.  It appears Brent's bike lost all oil pressure when the pump gear broke so the conrod bearing quickly overheated and seized.

Brent wrote:
That has kind of been the consensus of people that I have asked about this problem, the oil pump failure started a cascade of problems that...

That has kind of been the consensus of people that I have asked about this problem, the oil pump failure started a cascade of problems that resulted in the crank failure. 
 

I’ll say it again, this motor had less than 10 hours and had never been opened, and had three oil and filter changes before it failed….

Any word from kawy?

Brent
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5840
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Location
Temecula, CA, USA
1/30/2024 4:24pm
mxb2 wrote:

Any word from kawy?

 No response. 
 

e mailed twice, called once on the main tech support line, nothing so far, but this just happened Sunday so it may be too soon.

if anyone from Kawi In Irvine reads this, any contact  information would be helpful??

 

mxb2
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22437
Joined
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Location
Bowie, MD, USA
1/30/2024 4:48pm
mxb2 wrote:

Any word from kawy?

Brent wrote:
 No response.    e mailed twice, called once on the main tech support line, nothing so far, but this just happened Sunday so it may be...

 No response. 
 

e mailed twice, called once on the main tech support line, nothing so far, but this just happened Sunday so it may be too soon.

if anyone from Kawi In Irvine reads this, any contact  information would be helpful??

 

Thanks

1/30/2024 4:59pm Edited Date/Time 1/30/2024 5:01pm
mxb2 wrote:

Any word from kawy?

Brent wrote:
 No response.    e mailed twice, called once on the main tech support line, nothing so far, but this just happened Sunday so it may be...

 No response. 
 

e mailed twice, called once on the main tech support line, nothing so far, but this just happened Sunday so it may be too soon.

if anyone from Kawi In Irvine reads this, any contact  information would be helpful??

 

You need to go through a dealer.  They have service reps that can approve repairs.  The dealer will work to get it approved, because they make money on the repair parts/work.

2
dancolvin633
Posts
685
Joined
6/28/2016
Location
Plumas Lake, CA, USA
1/31/2024 1:06pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

2
racinstation
Posts
941
Joined
5/18/2013
Location
Driggs, ID, USA
1/31/2024 1:12pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

On the main frame of the bike, or on the dealers mainframe computer?

1
soggy
Posts
8771
Joined
12/3/2018
Location
USA
1/31/2024 1:19pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

On the main frame of the bike, or on the dealers mainframe computer?

 Hope this is not a serious question. 

2
racinstation
Posts
941
Joined
5/18/2013
Location
Driggs, ID, USA
1/31/2024 1:21pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

On the main frame of the bike, or on the dealers mainframe computer?

soggy wrote:

 Hope this is not a serious question. 

It's not

alycium102
Posts
145
Joined
11/14/2017
Location
USA, MN, USA
1/31/2024 1:36pm
mxb2 wrote:

Any word from kawy?

Brent wrote:
 No response.    e mailed twice, called once on the main tech support line, nothing so far, but this just happened Sunday so it may be...

 No response. 
 

e mailed twice, called once on the main tech support line, nothing so far, but this just happened Sunday so it may be too soon.

if anyone from Kawi In Irvine reads this, any contact  information would be helpful??

 

Did you do any clutch work or basket work to the bike?

Brent
Posts
5840
Joined
8/16/2006
Location
Temecula, CA, USA
1/31/2024 1:49pm
You need to go through a dealer.  They have service reps that can approve repairs.  The dealer will work to get it approved, because they make...

You need to go through a dealer.  They have service reps that can approve repairs.  The dealer will work to get it approved, because they make money on the repair parts/work.

Yea I did call the dealer Monday and told them the issue, their employee said they would get back to me.

Problem is I have a guy from NL here now to train for racing, and waiting for a response or action from Kawi will take weeks if not months, so I just have to get a new motor now and deal with it later.  I need to get this kid back on the track ASAP.   

I was told that Mitch Payton is now going to look into this, as they are helping out with my rider's program...

Still, no one can explain for sure why this happened to a new bike - If you 24 KX450 owners start to sense a loss of power or hear a strange noise, stop riding it and get it checked out.  It only took 1/3 of a lap for our motor to go from perfect to destroyed...Sick

Brent
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5840
Joined
8/16/2006
Location
Temecula, CA, USA
1/31/2024 1:56pm Edited Date/Time 1/31/2024 2:00pm
alycium102 wrote:

Did you do any clutch work or basket work to the bike?

no. 

At 9.5 hours the clutch was not even opened yet, just did two oil changes using Maxima Full synthetic oil and OEM filters. Checked the old filters and transmission filter cage for debris each time, no copper shavings or metal debris found prior to the problem.   

2
crmx105
Posts
662
Joined
5/7/2016
Location
Dunnellon, FL, USA
1/31/2024 2:19pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it isn't cracked they epoxy the frame!!!! Hard to believe but true!

alycium102
Posts
145
Joined
11/14/2017
Location
USA, MN, USA
1/31/2024 2:23pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

crmx105 wrote:
Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it...

Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it isn't cracked they epoxy the frame!!!! Hard to believe but true!

Hopefully it’s a long going kind of deal. Being in Minnesota we haven’t been getting many hours on our bikes other than an indoor that doesn’t abuse them too bad. 

jophis_37
Posts
24
Joined
1/27/2020
Location
Sierra Vista, AZ, USA
1/31/2024 3:39pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

crmx105 wrote:
Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it...

Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it isn't cracked they epoxy the frame!!!! Hard to believe but true!

I got the notification today.  I plan to inspect the frame myself then drop the bike off at the dealer Friday for them to inspect. They don't have the epoxy kit so they'll have to order it from kawi after the inspection

alycium102
Posts
145
Joined
11/14/2017
Location
USA, MN, USA
1/31/2024 5:20pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

crmx105 wrote:
Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it...

Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it isn't cracked they epoxy the frame!!!! Hard to believe but true!

jophis_37 wrote:
I got the notification today.  I plan to inspect the frame myself then drop the bike off at the dealer Friday for them to inspect. They...

I got the notification today.  I plan to inspect the frame myself then drop the bike off at the dealer Friday for them to inspect. They don't have the epoxy kit so they'll have to order it from kawi after the inspection

I just don’t see how this “epoxy” mix is a remedy for a potential cracked frame. Like I said before, hopefully this warranty issue carries over into the warmer months. 

1
Kyle978
Posts
1712
Joined
10/7/2013
Location
Dirt, NM, USA
1/31/2024 5:31pm

Was going to snag a ‘24 this week, happened to check this thread and see Brent’s engine issue. Now seeing they’re going to epoxy the frame as a fix?! I’m gonna wait and see how this plays out lol. 

6
dancolvin633
Posts
685
Joined
6/28/2016
Location
Plumas Lake, CA, USA
1/31/2024 6:08pm

This is the area to inspect. 
IMG 3937

1
hititpind
Posts
403
Joined
2/27/2015
Location
USA
1/31/2024 6:28pm Edited Date/Time 1/31/2024 6:42pm

Man I hope they fix that engine. Manufacturers keep proving that being the first with a new model is usually not worth the risk. The Snowmobile industry is notorious for it. Bummer to see bikes heading the same way.

2
Brent
Posts
5840
Joined
8/16/2006
Location
Temecula, CA, USA
1/31/2024 6:33pm
Kyle978 wrote:
Was going to snag a ‘24 this week, happened to check this thread and see Brent’s engine issue. Now seeing they’re going to epoxy the frame...

Was going to snag a ‘24 this week, happened to check this thread and see Brent’s engine issue. Now seeing they’re going to epoxy the frame as a fix?! I’m gonna wait and see how this plays out lol. 

probably not a bad idea to wait a bit to see what happens.

 This bike is so new, it is just getting out in larger numbers to consumers, who are the ultimate durability testers.

Epoxy to fix a frame defect? That sounds about as silly as using an undersized, slide out air filter housed in a tiny airbox...

..oh wait...

6
dancolvin633
Posts
685
Joined
6/28/2016
Location
Plumas Lake, CA, USA
1/31/2024 7:02pm

I can confirm there was a recall sent to the dealers this morning on the main frame… more details to come.

crmx105 wrote:
Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it...

Not sure what the Vin # range is but the issue is near the shock tower. If it's cracked Kawasaki replaces the frame , if it isn't cracked they epoxy the frame!!!! Hard to believe but true!

jophis_37 wrote:
I got the notification today.  I plan to inspect the frame myself then drop the bike off at the dealer Friday for them to inspect. They...

I got the notification today.  I plan to inspect the frame myself then drop the bike off at the dealer Friday for them to inspect. They don't have the epoxy kit so they'll have to order it from kawi after the inspection

Did you receive something in the mail?

RCMXracing
Posts
891
Joined
8/10/2011
Location
N., TX, USA
2/1/2024 6:15am

Checked VIN on Kawasaki recall page, nada, and passed eyeball test. 

Where is the documentation of this problem?

RCMXracing
Posts
891
Joined
8/10/2011
Location
N., TX, USA
2/1/2024 6:49am
alycium102 wrote:

IMG 7438 2.jpeg?VersionId=6dpwPnBlddVCCmEdQJ9D2IT3q5EGb2

“Eligible units”… be cool if there was a VIN range, but no letter and nothing when punch VIN into recall page.

VIN on mine ends in 1236 

crmx105
Posts
662
Joined
5/7/2016
Location
Dunnellon, FL, USA
2/1/2024 7:23am
alycium102 wrote:

IMG 7438 2.jpeg?VersionId=6dpwPnBlddVCCmEdQJ9D2IT3q5EGb2

RCMXracing wrote:
“Eligible units”… be cool if there was a VIN range, but no letter and nothing when punch VIN into recall page. VIN on mine ends in...

“Eligible units”… be cool if there was a VIN range, but no letter and nothing when punch VIN into recall page.

VIN on mine ends in 1236 

Mine is in 827 and it did come up.

hondadubs
Posts
10
Joined
2/1/2024
Location
Fargo, ND, USA
2/1/2024 8:22am

Mine is 802. No recalls on the recall site. But per the image of the frame my frame sections are stamped WD not V5. Not sure if that has anything to do with it or not?

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