When good bikes go bad

[flyingcr250]

Enjoy:shit:

http://www.facebook.com/media/set/?set=a.3724820521689.173985.1311154522&type=1&l=09ad0ae77e

[Jinxycat]

maybe you and the "wanted, broken 450 or similar" could hook up for a play date :innocent:

[Pornstar]

Ouch bro:pinch:

[White trash]

Jinkies! You poor bastard, that looks expensive.

[Crasherfromwayback]

Bad buzz. So no KTM tech has an idea as to why it's done what it has?

[flyingcr250]

Jinkies! You poor bastard, that looks expensive.
$4100 if its done by a bike shop


Bad buzz. So no KTM tech has an idea as to why it's done what it has?

No solid clues, just lots of speculation, oil pumps were fine, looks like maybe the oil jets maybe got blocked?? Who knows,

[Crasherfromwayback]

No solid clues, just lots of speculation, oil pumps were fine, looks like maybe the oil jets maybe got blocked?? Who knows,

Bugger. So I gather it's a one off...not like they're doing it all over the globe?

[Buddy L]

When i pulled my RMZ appart i thought, it was quite strange that the cam spun directly on the Alloy Head instead of being supported by a bearing, I thought it was quite cheap and rubbish. But It seems KTM do the same.
What's the reason for this?

[flyingcr250]

When i pulled my RMZ appart i thought, it was quite strange that the cam spun directly on the Alloy Head instead of being supported by a bearing, I thought it was quite cheap and rubbish. But It seems KTM do the same.
What's the reason for this?

Yes! That was the first thing i noticed when i first did a piston a few months ago

[ktm84mxc]

Most modern 4 stroke singles just run the cam/s on a hardened surface it works for early sl/xl Honda singles and how many of those are still being ridden-heaps and they just use a oil strainer not a filter.
Have seen many a 4 stroke with a blown engine a few the conrod snapped smashing the cases, barrel, bending valves only salvageable were the gearbox and clutch, over $6g in parts. A mates RMZ450 010 blew its gearbox 2nd-5th $2g in parts from the states. Another mates CRF450 did its gearbox at 35 hrs he got it fixed sold it and got a YZ250 end of problems.
A MX bike will have a design life be it 200 or 300 hours same as your fridge/washing machine.

[Flicks]

Are you fixing it or selling it off in parts? 2011 350sxf are going for around 8-9g so 4g in parts might not be worth it.

[flyingcr250]

Are you fixing it or selling it off in parts? 2011 350sxf are going for around 8-9g so 4g in parts might not be worth it.

Na, im putting the money towards a new bike, dont know what im doing with my old bike... Dont even know what its worth now

[green machine]

Na, im putting the money towards a new bike, dont know what im doing with my old bike... Dont even know what its worth now

Wonder if you'd do alright out of it stripping it down.....but i spose if if they are selling for around 8g you might get 3-3.5g for it as it is?

[Stylo]

Wonder if you'd do alright out of it stripping it down.....but i spose if if they are selling for around 8g you might get 3-3.5g for it as it is?

That's a scary story and I thought KTM would have had their stuff sorted .

Been thinking about a new $4T but I'll hang on to my old 2T for sure now.....

[flyingcr250]

Wonder if you'd do alright out of it stripping it down.....but i spose if if they are selling for around 8g you might get 3-3.5g for it as it is?

Who knows, need to do somthing with it...

[green machine]

Who knows, need to do somthing with it...

True Steveo.....i don't envy you.....

[Dumruat]

I feel for you. no one likes to see a nice new bike blow up . the bore looked healthy prior to its mishap.

Would the old ktm 2 stroke have cost you as much to repair?


If you replace it instead of repair going back to a ring ding ding bike?

[flyingcr250]

I feel for you. no one likes to see a nice new bike blow up . the bore looked healthy prior to its mishap.

Would the old ktm 2 stroke have cost you as much to repair?


If you replace it instead of repair going back to a ring ding ding bike?

Yep ive never had any major problems with any of my 2strokes, so im going back to the trusty ktm 300...

[ktm84mxc]

If you lunched a KTM250/300 piston, barrel, head, conrod, mains the most you'd have to pay would be $2g NZ, you can buy a complete 300 kit in the states for US$700.
Cr are you buying new or 2nd hand? a mates got an 010 300Exc on trademe with a complete 250 top end as spares, bikes well set up for trail rides etc $9.5g. He bought a new 011 300Exc at just under cost from a dealer.

[flyingcr250]

If you lunched a KTM250/300 piston, barrel, head, conrod, mains the most you'd have to pay would be $2g NZ, you can buy a complete 300 kit in the states for US$700.
Cr are you buying new or 2nd hand? a mates got an 010 300Exc on trademe with a complete 250 top end as spares, bikes well set up for trail rides etc $9.5g. He bought a new 011 300Exc at just under cost from a dealer.

Yea going brand new again

[krad_nz]

Stink mate, thats pretty bad luck.

[cheese]

Could you turn it into a coffee table like top gear did?

Or is there an athena kit?

[yokel]

Sucks man!
Sell left over motor bits and transplant a 300 or even 380 2 stroke in the rolling chassis.


This is a classic case of why 4 strokes(mx type) are not that good of an idea for dirt bike.

[Latte]

There's a rebuilt cr500 motor on trademe ... just slap a ktm sticker on the side cover.

[pete-blen]

The head & cam maybe able to be saved..
I had that prob with a 74 XL250K1 years ago..
I line bored the head/rocker case & had the cam bearing
surface reground smaller.. Then fitted split race needle bearings...
Have also seen it done with white metal shells
on a Briggo Jawa speedway motor...
Datsan 120Y shells I think they were...

On the piston beval /round the piston skirt edge
so its less lightly to scrape the oil off the bore..

Figger out why you have low oil flow or preasure...

[CRF119]

Said to see! Put some pedals on it and sell it to a down hill mountain biker!


When i pulled my RMZ appart i thought, it was quite strange that the cam spun directly on the Alloy Head instead of being supported by a bearing, I thought it was quite cheap and rubbish. But It seems KTM do the same.

The CRFs run bearings in the heads i thought every manufacture would.

[CRF119]

Some options

http://www.ebay.com/itm/2008-KTM-450-SX-F-SXF-Engine-Motor-Starter-Full-Electronics-08-/300695073339?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item4602d2b23b

http://www.ebay.com/itm/KTM-450-SX-F-SXF-Engine-Motor-Stator-assy-2005-05-/300685075840?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item46023a2580


My CRF450 is not worth selling because ive spent so much on suspension and setup so when the bottom end goes ill just be doing a CR500 conversion.

[flyingcr250]

Nope im done with 4strokes. I maintained it as sensibly as i could and it still went pop and no one can say why. Ill steal my forks, bars etc off it an put them on my new bike, one day down the track i might fix it if i havent sold it as a project...

[motor_mayhem]

Before you get ridiculously hasty I would just point out that similar things can happen to two strokes as well.

I have a 2 banger in my workshop right now (not mine though) that seems likely to need a new crank and probably a new piston as well.

And I have only just completed getting my 4 stroke through that.


Maybe an XR200/XR250 motor would go good in that KTM frame - could turn out vaguely similar to a freeride or something.

[jt119]

Before you get ridiculously hasty I would just point out that similar things can happen to two strokes as well.

I have a 2 banger in my workshop right now (not mine though) that seems likely to need a new crank and probably a new piston as well.

And I have only just completed getting my 4 stroke through that.


Maybe an XR200/XR250 motor would go good in that KTM frame - could turn out vaguely similar to a freeride or something.

XR200/XR250 to much power for him

[CHOPPA]

Ill give ya $1500 :pinch:

[raglanash]

Ratshit bro.

[Crabby]

Maybe an XR200/XR250 motor would go good in that KTM frame - could turn out vaguely similar to a freeride or something.

Please don't :sick:

[flyingcr250]

Ill give ya $1500 :pinch:

Ha, must be woth 2000 i would think, when i think how much i paid for it and what im likely to get for the roller i feel sad.... :facepalm:

[jt119]

Ha, must be woth 2000 i would think, when i think how much i paid for it and what im likely to get for the roller i feel sad.... :facepalm:

sucks a hope the bike shop gives you a good deal on the new one

[flyingcr250]

sucks a hope the bike shop gives you a good deal on the new one

Hopefully it lasts longer than a year.....

[barty5]

Ha, must be woth 2000 i would think, when i think how much i paid for it and what im likely to get for the roller i feel sad.... :facepalm:

sounds bought right be lucky to get ova 2g as it is real hard to sell bike in that condition as the buyer is only taking your word for it as to what went wrong etc etc (even though really you dont know.
seams rather odd looking at picks that the piston went as well as the cam be it only one side of it cause that means the other half of the cam was getting oil which tends say oil pump working ok but then the piston tends to say the oil squirter they have on to the barrel wasnt working comes back to oil pump not working properly.
Have you removed the squirter in crank to see if its clear?
was oil filter ok not falling apart?
whole thing tends to lead to oil blockages of some sort.

If you dont want to part out or try and sell as a whole an take the loss id keep an eye out on Ebay for the parts needed wont be long and they will start wrecking them in the US seams to only take a year for the new models to start turning up there.

[Flicks]

Ill give you 2g for it.

[Ender EnZed]

Ill give you 2g for it.

Already sold I think.

http://www.kiwibiker.co.nz/forums/showthread.php/148953-2011-KTM380sx

[scott411]

i know another ktm350 that did something similer, he had destroyed the clutch and the clutch materials had blocked the oil pick up and caused the oil starvations, i have also seen dirt do this in rmz250's from a bike being drowned in muddy water then kept ridden after they pulled it out, the rmz's have a oil strainer in the bottom of the motor that should be removed and cleaned regualry,

diff looks like a oil starvation issue with the way the cam picked up, all the RMZ's and KXF's run the same set up with the cam running in the head, you have to be very carefull with the torque settings in there because it is very easy to over torque them

[CRF119]

Scott correct me if i am wrong but wasn't the 350 recalled because of bearing problems in the gear box?

Did this bike ever have the gear box serviced because of the failure? or was it meant to be serviced/recalled but was missed and now the bearing parts have blocked oil ways?

Loving the honda with the sepperate gear box and end engine oil :)

[scott411]

Scott correct me if i am wrong but wasn't the 350 recalled because of bearing problems in the gear box?

Did this bike ever have the gear box serviced because of the failure? or was it meant to be serviced/recalled but was missed and now the bearing parts have blocked oil ways?

Loving the honda with the sepperate gear box and end engine oil :)

i do not know exactly why the 350 was recalled sorry,

[flyingcr250]

Scott correct me if i am wrong but wasn't the 350 recalled because of bearing problems in the gear box?

Did this bike ever have the gear box serviced because of the failure? or was it meant to be serviced/recalled but was missed and now the bearing parts have blocked oil ways?

Loving the honda with the sepperate gear box and end engine oil :)

Yep i had the bearing recall done about 70 hours ago, and the fuel filters

[Jay GTI]

Recalls (so far) are valve stem seals in the early bikes, handlebar clamps, gearbox bearings and fuel filter. Plus I got an upgraded '12 fuel pump due to mine dying, not covered by a recall.

So I guess I just wait for mine to grenade as well...

[flyingcr250]

Anyway heres the new one
http://www.facebook.com/photo.php?fbid=3788627556825&l=4e46d01f50

[motor_mayhem]

Anyway heres the new one
http://www.facebook.com/photo.php?fbid=3788627556825&l=4e46d01f50

Noice :niceone:

[Dumruat]

Anyway heres the new one
http://www.facebook.com/photo.php?fbid=3788627556825&l=4e46d01f50

i'm average at best at driving facebook ..

hopefully that your new toy flycr.

if so i noticed the lovely pipe and magic 300xc on mudguard..




ring ding ding!:yes::yes::yes: