MotoHouston.com MotoHouston.com
Register Members List Member Map Media Calendar Garage Forum Home Mark Forums Read

Go Back   MotoHouston.com > General Discussion > Dirtbikes, Mini's, ATV's.....
Forgot info?

Welcome to MotoHouston.com! You are currently viewing our forums as a guest which gives you limited access to the community. By joining our free community you will have access to great discounts from our sponsors, the ability to post topics, communicate privately with other members, respond to polls, upload content, free email, classifieds, and access many other special features. Registration is fast, simple and absolutely free, join our community!

Register Today!

If you have any problems with the registration process or your account login, please contact us.


Like us on Facebook! Regular shirt GIVEAWAYS and more

Advertisement

Reply
Share This Thread: 
Subscribe to this Thread Thread Tools
Old 07-12-2010, 09:57 AM   #1
mekrew
naaaaaw i sayin
 
mekrew's Avatar
 
Join Date: Apr 2005
Feedback Rating: (4)
Posts: 9,778

Experience: 1-3 months
Trackdays: 10+






Member Garage





Send a message via AIM to mekrew
Ktm Go Boom ... lets peek inside

..
mekrew is offline   Reply With Quote
Similar Topics
Thread Thread Starter Forum Replies Last Post
KTM Go Boom Round 99 mekrew Mini's, Motards & Flattrack Racing 28 03-01-2014 10:48 AM
KTM go boom. TheMagicMan Dirtbikes, Mini's, ATV's..... 36 08-21-2010 11:10 AM
sneek peek... ILowNslowI General Discussion (Moto Related) 16 03-01-2010 10:15 AM
SNEEK PEEK! H2447INTX General Discussion (Moto Related) 32 07-20-2008 08:51 PM
Advertisement
Old 07-12-2010, 10:03 AM   #2
JuiceMan
Sneak Geek
 
JuiceMan's Avatar
 
Join Date: Dec 2005
Location: h o u s t o n
Feedback Rating: (0)
Posts: 748

Experience: 8 years
Trackdays: 1

Bike(s):
Retired 05 crf50









i say , you should just hang your gloves up and retire.

just my 2cents lol
__________________
dopestatus.com
JuiceMan is offline   Reply With Quote
Old 07-12-2010, 10:07 AM   #3
signpimp
Senior Member
 
signpimp's Avatar
 
Join Date: Jan 2009
Location: Houston
Feedback Rating: (1)
Posts: 781

Experience: 10+ years
Trackdays: 10+

Bike(s):
2002 klx110









Send a message via MSN to signpimp
Looks like an easy fix to me. Crack open the engine and clean it thoroughly. While you are at it, inspect all the rest of your parts and check clearances/bearings. If the cylinder wall is still looking good, not gouged, have it professionally honed, buy a new piston and ring kit, new gasket kit, and put it back together. If the cylinder wall is a little damaged, have it bored out to the next size, put it back together and re-jet...Nothing like a fresh motor!

If you cut the timing chain, I would suggest you buy another one. While you have the motor apart, clean your valves up and replace the valve guide seals just for the heck of it. Lap the valve seats for good measure.
signpimp is offline   Reply With Quote
Old 07-12-2010, 10:18 AM   #4
Racer997
Racer, Rider, Shooter
 
Racer997's Avatar
 
Join Date: Oct 2007
Location: 500 yards away...and watching you in the crosshairs...
Feedback Rating: (6)
Posts: 3,872


Bike(s):
BMW Boxer Cup
KTM 450 SMR
Some Yamaha TTR 125Ls
Lackierwarenfabrik Mg42
Valmet M76






I knew it. The score marks make me think this ring has been failing for a while, Probabaly started at TWS (Texas World Speedway) in April.

Take the path we spoke of yesterday, Greg. About $500 and you'll be back and running. Have Kerry check the valve tips carefully for wear (because they do wear), and inspect the cylinder. He knows what to do.

As far as the shattered ring, well, welcome to my world. Unless you have all the pieces to make it "whole" again, you don't know, but should assume bits fell into the bottom end. Pull your filters and check them for metal debris. Instant answer.


Last edited by Racer997; 07-12-2010 at 10:20 AM.
Racer997 is offline   Reply With Quote
Old 07-12-2010, 12:27 PM   #5
mekrew
naaaaaw i sayin
 
mekrew's Avatar
 
Join Date: Apr 2005
Feedback Rating: (4)
Posts: 9,778

Experience: 1-3 months
Trackdays: 10+






Member Garage





Send a message via AIM to mekrew
Should i be worried any about the crank or crank bearings? It is on 3 years of me beating on it
mekrew is offline   Reply With Quote
Old 07-12-2010, 02:53 PM   #6
mekrew
naaaaaw i sayin
 
mekrew's Avatar
 
Join Date: Apr 2005
Feedback Rating: (4)
Posts: 9,778

Experience: 1-3 months
Trackdays: 10+






Member Garage





Send a message via AIM to mekrew
reply from one of the engine guys over at ktmtalk

Quote:
Thank you for posting the pics, the oil ring is exhibit 101 of what I have been trying to tell the world is wrong with these rings ever since they went to a 2.5mm oil ring. They use a one piece cast iron ring and they do not survive as thin as that!
That said, the oil ring itself did not cause the engine to quit running. If you look at the piston top, the valve pockets on the intake side have a witness mark from valves contacting the piston! Probubly starts with the valve guides being so worn out that the valve is being pushed into the sat by the piston.
Hard to tell what is going on on the bore but the top ring was not sealling well based on the brown stains on the bore. That is from combustion passing around the ring.
If I where doing this it would be fresh bore, aftermarket piston, new main bearings & rod the 2006 valve guides. Also the bottom endge of the combustion chamber should be chamfored out slightly wider as the piston often taps the head on that model. This piston was not but they are so close just take it apart and put it back together and you may have one tapping, very hard of rod bearings.
Additionall you really should have a slipper clutch so your not over reving the engine on down shifts.
mekrew is offline   Reply With Quote
Old 07-12-2010, 03:07 PM   #7
PoYoHpd
Houston Phifty Domination
 
PoYoHpd's Avatar
 
Join Date: Dec 2006
Location: South East
Feedback Rating: (0)
Posts: 1,195

Experience: 4 years

Bike(s):
04 Gsxr 600/ 03 honda xr50









Send a message via AIM to PoYoHpd
NEXT TIME PUT OIL IN IT
PoYoHpd is offline   Reply With Quote
Old 07-12-2010, 03:11 PM   #8
mekrew
naaaaaw i sayin
 
mekrew's Avatar
 
Join Date: Apr 2005
Feedback Rating: (4)
Posts: 9,778

Experience: 1-3 months
Trackdays: 10+






Member Garage





Send a message via AIM to mekrew
LOL
mekrew is offline   Reply With Quote
Old 07-12-2010, 03:52 PM   #9
Racer997
Racer, Rider, Shooter
 
Racer997's Avatar
 
Join Date: Oct 2007
Location: 500 yards away...and watching you in the crosshairs...
Feedback Rating: (6)
Posts: 3,872


Bike(s):
BMW Boxer Cup
KTM 450 SMR
Some Yamaha TTR 125Ls
Lackierwarenfabrik Mg42
Valmet M76






Quote:
Originally Posted by mekrew View Post
reply from one of the engine guys over at ktmtalk
I can't really tell if those are witness marks from your puny pictures. I need more close-up stuff to see. But that said, it's possible that I see witness marks on the piston in the valve reliefs, but I don't think I see any on the valves, so I am not sure I agree with him. He told me the same about the thin ring. My JE has has a 3 mm top ring, which is stouter than the 2.5 mm stocker that is said to be a problem.

I believe Dave was wrong about my piston. He said it failed because it was contacting the edge of the combustion chamber and he could see the witness mark. I disagreed and said the witness mark came from when the piston cracked in half and then contacted the cylinder head. In other words, he thinks the mark came before failure and I think it was after.

More close-ups of the intake valve tips and all the valves in the combustion chamber, and of the piston, please.
Racer997 is offline   Reply With Quote
Old 07-12-2010, 03:59 PM   #10
ddgtomahawk
Write my name! \/
 
ddgtomahawk's Avatar
 
Join Date: Sep 2008
Location: Alvin
Feedback Rating: (2)
Posts: 5,493

Experience: 10+ years
Trackdays: 10+

Bike(s):
2016 R1
2001 Honda CBR929 RE
2005 Honda CBR600RR
2007 R6S






Quote:
Originally Posted by Racer997 View Post
I can't really tell if those are witness marks from your puny pictures. I need more close-up stuff to see. But that said, it's possible that I see witness marks on the piston in the valve reliefs, but I don't think I see any on the valves, so I am not sure I agree with him. He told me the same about the thin ring. My JE has has a 3 mm top ring, which is stouter than the 2.5 mm stocker that is said to be a problem.

I believe Dave was wrong about my piston. He said it failed because it was contacting the edge of the combustion chamber and he could see the witness mark. I disagreed and said the witness mark came from when the piston cracked in half and then contacted the cylinder head. In other words, he thinks the mark came before failure and I think it was after.

More close-ups of the intake valve tips and all the valves in the combustion chamber, and of the piston, please.
No ! I cannot be 100% I would rather see it in person.
__________________


Come here you little cake eating sieg heil .
ddgtomahawk is offline   Reply With Quote
Old 07-12-2010, 04:09 PM   #11
mekrew
naaaaaw i sayin
 
mekrew's Avatar
 
Join Date: Apr 2005
Feedback Rating: (4)
Posts: 9,778

Experience: 1-3 months
Trackdays: 10+






Member Garage





Send a message via AIM to mekrew
Quote:
Originally Posted by Racer997 View Post
I can't really tell if those are witness marks from your puny pictures. I need more close-up stuff to see. But that said, it's possible that I see witness marks on the piston in the valve reliefs, but I don't think I see any on the valves, so I am not sure I agree with him. He told me the same about the thin ring. My JE has has a 3 mm top ring, which is stouter than the 2.5 mm stocker that is said to be a problem.

I believe Dave was wrong about my piston. He said it failed because it was contacting the edge of the combustion chamber and he could see the witness mark. I disagreed and said the witness mark came from when the piston cracked in half and then contacted the cylinder head. In other words, he thinks the mark came before failure and I think it was after.

More close-ups of the intake valve tips and all the valves in the combustion chamber, and of the piston, please.
muhahaha ... u want large pictures ...... i hope you are ready for them lol
mekrew is offline   Reply With Quote
Old 07-12-2010, 04:26 PM   #12
rickykline
super squid
 
rickykline's Avatar
 
Join Date: Nov 2005
Location: La Porte
Feedback Rating: (0)
Posts: 5,159

Experience: 6 years
Trackdays: 2

Bike(s):
1999 yamaha r1 RIP
2005 zx10r





hone it new rings and piston check the clearances and lap valves and replace valve seals.. that ring is toast
__________________
its RICKY KLINE

I WISH MY GRASS WAS EMO SO IT WOULD CUT ITSELF....
rickykline is offline   Reply With Quote
Old 07-12-2010, 05:09 PM   #13
jrob
cheers
 
jrob's Avatar
 
Join Date: Jul 2008
Location: Kemah
Feedback Rating: (0)
Posts: 1,653

Experience: 10+ years
Trackdays: 5

Bike(s):
KTM 450 XC-F
DRZ 400 Kick/Motard Convert








nice. I buy a ktm and here are two threads about them blowing up. awesome!
Which model is that?
Hope it goes back together smooth for ya man.
__________________
CARPE DIEM
jrob is offline   Reply With Quote
Old 07-12-2010, 05:14 PM   #14
mekrew
naaaaaw i sayin
 
mekrew's Avatar
 
Join Date: Apr 2005
Feedback Rating: (4)
Posts: 9,778

Experience: 1-3 months
Trackdays: 10+






Member Garage





Send a message via AIM to mekrew
450smr motard
mekrew is offline   Reply With Quote
Old 07-12-2010, 05:19 PM   #15
Jason_Canuck
Senior Member
 
Join Date: Apr 2006
Feedback Rating: (3)
Posts: 3,829

Experience: 6 years

Bike(s):
A black one
and a red one








There is actually 4 failed KTMs on this board at this writing (unless staton got his fixed already).
__________________
Vegans are eating the solution to global warming!
Jason_Canuck is offline   Reply With Quote
Old 07-12-2010, 05:28 PM   #16
jrob
cheers
 
jrob's Avatar
 
Join Date: Jul 2008
Location: Kemah
Feedback Rating: (0)
Posts: 1,653

Experience: 10+ years
Trackdays: 5

Bike(s):
KTM 450 XC-F
DRZ 400 Kick/Motard Convert








Quote:
Originally Posted by Jason_Canuck View Post
There is actually 4 failed KTMs on this board at this writing (unless staton got his fixed already).
well thats better than five I spose.
__________________
CARPE DIEM
jrob is offline   Reply With Quote
Old 07-12-2010, 05:33 PM   #17
Jason_Canuck
Senior Member
 
Join Date: Apr 2006
Feedback Rating: (3)
Posts: 3,829

Experience: 6 years

Bike(s):
A black one
and a red one








They are all track bikes that have a few hours on them. There is also 1 of each of Yamaha, Honda and Suzuki motards too that have feld the wrath of GSS this year.

My bet would be not to buy a Kawi cause they look to be next.
__________________
Vegans are eating the solution to global warming!
Jason_Canuck is offline   Reply With Quote
Old 07-12-2010, 06:02 PM   #18
PimpDaub
I'm Rat 'Tarded
 
PimpDaub's Avatar
 
Join Date: May 2009
Location: Austin, Tx
Feedback Rating: (3)
Posts: 1,345

Experience: 2 years
Trackdays: 1

Bike(s):
1973 Honda Cb750 Four -Cafe in progress
2005 CRF50 STUNT - MONSTER ENERGY
2001 Suzuki DRZ400E/SM (SOLD) :-(
Don't worry, scrot. There are plenty of 'tards out there living really kick- lives.
My first bike was a 'Tard. She's a Pilot now."

Member Garage





Quote:
Originally Posted by jrob View Post
well thats better than five I spose.
Pay the cost to be the boss i guess?

Ya KTM's are fast as ... but the maintenance to keep 'em that way...!
Not sure if I'm up for it.
Keep Three Mechanics
__________________

He nailed the take-off, but when he landed, something terrible happened. His front tire exploded like a cannonball, and his handle bars went straight through his head. Blood was everywhere. His teeth were ground down to a powder, and the front of his face exploded out the back of his skull. He died instantly... the next day.
PimpDaub is offline   Reply With Quote
Old 07-12-2010, 07:34 PM   #19
Scorpio
Twist the Grip, Let'r Rip
 
Scorpio's Avatar
 
Join Date: May 2005
Location: Shmearth
Feedback Rating: (6)
Posts: 12,292

Experience: 10+ years
Trackdays: 10+


450x sumo (sold)
RC51 (sold)
Honda Grom 125(sold)

Member Garage





Send a message via AIM to Scorpio
Quote:
Originally Posted by PimpDaub View Post
Pay the cost to be the boss i guess?

Ya KTM's are fast as ... but the maintenance to keep 'em that way...!
Not sure if I'm up for it.
Keep Three Mechanics

That zuk of yours aint exactly what I'd call "reliable".


Scorpio is offline   Reply With Quote
Old 07-12-2010, 09:08 PM   #20
Tojo92
AKA Mongo
 
Tojo92's Avatar
 
Join Date: Jul 2007
Location: Cedar Park, TX
Feedback Rating: (7)
Posts: 5,142

Experience: 10+ years
Trackdays: 10+

Bike(s):
1994 Ducati 900 SS/SP
2003 Honda CRF450R motard
2002 Husqvarna NOX
2001 KTM Duke II






Quote:
Originally Posted by Jason_Canuck View Post
There is actually 4 failed KTMs on this board at this writing (unless staton got his fixed already).
Not yet, but we are getting close I believe. Turns out, there was a little gift in my box of spares. A brand spanking new piston, cam , and other goodies. Should be back together soon I hope. Not in a big rush.

Staton
__________________
CMRA#665 (neighbor of the beast)
The Problem - Endurance
Tojo92 is offline   Reply With Quote
Reply


Thread Tools

Advertisement


All times are GMT -5. The time now is 02:50 PM.


MotoHouston.com is not responsible for the content posted by users.
Privacy Policy