I'm doing the top end on my 2008 KTM 144SX and your videos have been helpful as well as increasing my confidence level in doing things right. Very thorough.

@cvdavis

3 жыл бұрын

Maybe a bit over confident. I did everything right but one small thing that ended up being a big big mistake. I put the inner head o-ring 'gasket' on incorrectly. It started well and ran fine while i rode slowly half way around the motocross track then bogged and stalled. Coolant leaking out and me confused what went wrong. I tore the engine apart and discovered that I had put the gasket on wrong. So much for my new piston, rings, piston pin and so on. It looks like I'll even have to get my cylinder recoated. Oh well lesson learned. I sure did learn a lot from your videos though and feel confident that next time I'll get it right. Costly learning this stuff sometimes. Btw I put the o-ring gasket on the head first but putting it around the raised part. The end result was my exhaust pipe was full of coolant. Funny now but a few hours earlier I wasn't in a very good mood. Win some and you lose some. Keep making more videos for us neophytes :)

@danmarkfordanskere

Жыл бұрын

I have the same bike. when you say inner head gasket o-ring is that on the piston or is it the litle sealing oring on the waterpump?

Glad you got something from them!!! I have ordered a new clutch cover for the bike and will soon have some video of changing the clutch cover!! Hopefully it is "on the way" but I have had a tough time locating it.

Fantastic video mate! All the info I'm looking for :-)

Glad you enjoyed it!!

i learned something new today, thank you..

Thanks for the heads up!! I've corrected that!

Watching and learning

That locking screw pushes on a piece of rubber that's about one inch long. It's round about the size of the hole that the screw goes into. Imagine an "O" ring but straight ("I"??). This may have dropped out when you removed the locking nut. Hope this helps!

really enjoying videos! I have watched 13 is there a final one?

thanks for your videos it really helpt!

My 02 ktm 125sx. I have no hose on the left side. It just has a brass fitting sticking out. Is this a big deal? Thanks love watching you. It makes things so much easier. Thanks!

if u clean out and reassamble your powervalve, do you have to adjust the z dimension or just connect the 2

Why do you set the z mass(end overhaul) to 42.5 in the usa? Here in europe is the manual 46. does it go better?

Interesting stuff

Yes really the only way to adjust this Z dimension is when you have the cylinder head off so I would adjust this dimension any time you have access to the cylinder.

Thank you very much for great videos! I'm new to motocross and these videos have really helped me to understand my bike (125 sx -01) better! I was just wondering - when I turn the adjuster (03:28) I'm only able to move the control rod (03:39) upwards. When I turn it the other way the control rod doesn't move. I turned the adjuster to the "full down" positon and gently pushed the rod down with a screwdriver... Do you think something is broken inside? Is it safe to try starting the engine?

hey the bolt you said not to touch thats inside the adjuster moves in and out about a couple cm. and when it does it moves the control arm. I dont know if its supposed to do that

Sorry dude!!!! Life's chores have gotten in the way!!! I'll soon be posting some videos on what's been going on around my house lately and hopefully you'll understand. I'm dying to get back on that bike!!!

Is there a way to adjust the power valve spring preload on these older style 125 sx'? My low end power feels weak, and no real power comes on until mid-high rpm. I can tell the power valve is working, because when it does open the hit is nice and hard. I have mine set to the Langston setting. Someone was saying there is a spring tension adjuster that can be turned a little at a time to make it easier/harder for the power valve to open.

Awesome videos mate!!!! Part 14??? I am contemplating rebuilding my 2003 ktm 125 sx both top and bottom myself I am hoping to use your videos to do the top end do you know of any for the bottom end?? Also I have been told that vertex pistons are better than wiseco pistons I don't pretend to know much about bikes so I really haven't got a clue and living in the uk there aren't many places to get advice so any would be much appreciated. Many thanks

Does moving the slider around from the fork looking part mess anything up? Also should I assembled the top end with the valve opened or closed

btw, is this z-dimension possible to fix without taking the cylinder head off? maybe if you could take a picture or something inside the cover on the cylinder? there are markers on the control arm that show its position. Im talking about the cover on the ignition side of the engine when the cylinder is installed on the engine itself :)

Right On!!

please help me ive turned the adjuster to far to the left and then when i went to put adjuster back to how it was it wouldnt go into powerband.. no matter what i did it wouldnt go near the band.. now ive stripped top end re done whole powervalve etc to the manual specs its running much better but its still not getting that top end power it used to have before i messed with it and im to scared to play with adjuster again.. any ideas? thanks

The bolt that is suppose to hold the power valve adjustment in place is not working on my bike. It's the bolt that he says not to unscrew it more than one revolution. I unscrewed it completely (because it's not working) and realized it's not making any contact with the nut that adjust the powervalve. How is it suppose to thold the powervalve adjustment nut in place? Is there suppose to be a rubber peice that is being pressed against the adjustment valve with this screw?

Where do you get those bolts that go to the power valve flapper there in the exhaust

What happened to this projekt? is it working? Bthw thanks for good infos!

Thanks!!

My centre bolt on the adjuster pushes in and out? Is this normal and I can also adjust the adjuster with the 4 o'clock bolt fully torqued down how can I fix this

Good vid , were you macking sure powervalve doesn't come in contact with piston

I have a 2002 what is the name of that big nut on the side that you have took off? I’ve looked everywhere and I’ve lost mine

Hey, I know this is an old video so hopefully you'll be able to help, Had to swap my inner clutch cover over today and swap all the power valve arm and springs etc over. I cant adjust mine by hand due to there being a rubber bung type thing where the thread was.. is that normal

@leakymetal2615

3 жыл бұрын

Have you fixed this and what was the problem

Is this how you adjust when the power valve hits?

Do you have to adjust this every rebuild?

I was messing around and I turned the bolt you said to not mess with it felt like it got really loose then I tightened it back any advice

what is this cover where you can see the actual valve position? I lost a lower bolt, how to replace it with?

Thanx!

i ve dealt with bolt @6:36 what the concequences now?

Now what? I watched all of these to get to a series that’s not finished? Da fuck?!

part 14!! part 14!!! part 14!!

I'd be super thankful if you could give me some advice (I'm a poor student so I'd rather not take it to service if I can fix it myself). Best regards Bog

hello my name is Juan I'm from Los Angeles I have a 03 KTM 125sx I rebuilt my engine and when star it its making a noise like knock knock what could be and I got a blew engine that's why a rebuilt it bottom end and top end are new and I got a vertex piston with 2 ring need help

We’re do you get the specks

I got the same bike and my problem is with the bolt inside he fell of and I don't know what to do

what is the measure in the minute 9:40

Hey man...I have a ktm 125 exc 07 and the power valve isnt in its potision.....I would like to know where exchactly the power valve should be so the valve could reach at the top and work as it had to work....plz answer me back!!!

@AlchemistLair

10 жыл бұрын

In my specific bike the power valve needs to be 42.5mm from the top of the cylinder. The only way to measure this dimension correctly is with the head off the cylinder. Check the correct dimension measurement with your engine service manual.

Did this project end up being abandoned?

how do you seal the smaller gasket on the head, do you just put the gasket in or do you put some sealant on the gasket

@AlchemistLair

7 жыл бұрын

I just put a VERY thin filmu of high temp silicone on one surface. Spread it with your finger....it doesn't take much!!

just bought a 2001 125sx, it seems to run fine, but the 'engine' makes a whirring noise that actually seems louder than the exhaust while riding it is it my crank bearings??

@EliteGamers121

9 жыл бұрын

I have this problem as well and I thought it was my crank bearings do you have any confirmation on this if it is ?

@jakeadkins6109

9 жыл бұрын

EliteGamers121 Mine done the same thing. I have a 2007 125 sx. Its the clutch. If you pull in the clutch the noise goes away. It sounds horrible i know but its probably just the release bearing. Try changing the transmission fluid (what fixed mine) or you may need a new clutch release bearing. I fixed mine just by changing the transmission fluid.

chillin

Cool

What would happen if you accidentally adjusted the 8mil ‘middle’ screw? I may have have done so 🤔

@tomhellier6783

5 жыл бұрын

Craig Barwise likewise... what happened to yours? Did you have to strip engine?

there is no link in description......

watching

Hey do I have to remove the cylinder to replace the crank seal?

@dylanivers

Жыл бұрын

No

I might have to do the water pump seal I should of kept my 250

is this stock set up or racing set up,will this work for 2004 ktm 125x

@AlchemistLair

8 жыл бұрын

Stock out of the box set-up.....right out of the service manual. I don't have the service manual for that bike so I can't comment for sure on if it will work but I see no reason why it should not.

@jackreardon4384

7 жыл бұрын

AlchemistLair hey I have an issue an I know you. Can help me. Can you. Please email me at Jack.reardon1654@gmail.com

if my adjuster is hard to turn what problem am i having?

@AlchemistLair

9 жыл бұрын

Dillon Garcia Hard to say!! Bent linkages? You'll just have to take the cover off and inspect.

@ExtremeSports1200

8 жыл бұрын

+Dillon Garcia in gear mine is also really hard to turn

@ExtremeSports1200

8 жыл бұрын

+Dillon Garcia or the thing that he loosened at the beginning of the video has a rubber like push rod on it to hold the adjuster still and your little rubber thing may be stuck

Hey hoping to find some help. I tried adjusting the power valve with cylindar and head on. The adjuster that you turn to adjust the powervalve opening, was able to turn by hand with the 8 mil tightened. When I loosened the 8 mil it was still the same. And I also could not see the power valve bar through the window move at all when adjuster turned.

@matteooliveri9131

2 жыл бұрын

have you finded the problem now?

@aidano7503

2 жыл бұрын

@@matteooliveri9131 yeah, power valve flap was covered in carbon and metal shavings from a previous owner honing without taking out the power valve assembly o assume. Small 8 mill screw that holds adjuster in place doesn’t do anything still, not sure what to do about that.

@danmarkfordanskere

Жыл бұрын

​@@aidano7503 did you found out how to do it? Pls answer i have samr problem

@aidano7503

Жыл бұрын

@@danmarkfordanskere You’re power valve is probably seized. Mine was. You have to take off the head and cylinder and take a part the power valve to clean it all out and make sure it works properly. If ur bike has a noticeable power band when riding then that’s probably not the issue.

Hi guys I need help, the bolt which the man says not to touch my dumb ass friend has turned it, where does it need to be set as

@nikomanen

7 жыл бұрын

I have the same problem...

@jackreardon4384

7 жыл бұрын

Enduro X same issue have you figured it out

@niobi90

7 жыл бұрын

same problem any suggest?

@assi2assi

6 жыл бұрын

it´s a bit late but you have to take the clutch cover off and mount the centrifugal back together .there should be 3 balls somewhere find them put them in and mount the centrifugal shit to explain but it´s not hard when you see it ;)

what is that nut called? 2:50 need to know where i can buy it

Does anyone know how many turns out to set the power valve? i'm fully aware this may be different from bike to bike but just as a rough guide to get it somewhere near the mark

@iggymcnally323

2 жыл бұрын

wondering this myself

@iggymcnally323

2 жыл бұрын

did you ever find out what it was

@matissevanbruyssel4455

Жыл бұрын

@@iggymcnally323 nigga you 3 years late

surley i dont gotta pull my fkn head off just to adjust the dam power valve?? cmon ktm wtf

THIS GUY NEEDS SOMEONE ELSE TO DO THE VIDEO.ALMOST A SLEEP FEST.5 MINUTEVIDOE TOPS!!!!!

Not a bad video overall, but seriously, that could have easily been a 3 minute video. Don't be shy to get to the point, say it once and move on - lol!

@AlchemistLair

10 жыл бұрын

I'm not a slick video producer that stages all of my shots. I video as I work and describe the process as I deal with different issues. Thanks for the comment, though......very much appreciated!!!

@ilikesuzuki

8 жыл бұрын

+AlchemistLair no it's great that u take ur time to explain why and what. too many videos are rushed and missed out the little details that matters. again great video and thank u.

@AlchemistLair

8 жыл бұрын

Thanks for your positive comments...Very much appreciated!!

Definitely 3 minutes worth of video drawn out to 10 minutes from all the vocal wanderings and stupid ass section where we have to watch you burn your hand cutting your caliper which has absolutely nothing to do with the z dimension. I give you credit for your knowledge, but seriously, staying on subject would be much appreciated.

talk faster

& if ahh , uhh. , umm because uhh , ahh , turn ahh uhh. Haha wtf

I dont think you should be putting videos up giving people advice when it's clear your dont know what your talking about....

Why cant they just get to the fucking point!

Quite possibly the stupidest fucking engineering on the bike is the goddamn power valve. Forget about the blind faith when mounting the cylinder and think about the window to view adjustment being on the opposite side of the bike than the bolt you turn to adjust it. I hate this fucking bullshit. I have to take the fucking cylinder back off because thepv didn't line up on install.... AGAIN!!!!!!