There are open ends adpater that allows you to torque down bolts that aren't reachable with a socket. You just need to calculate the new torque value. Cheers
I would do 3 full heat cycles without touching the throttle while it warms up. Gentle riding for first 10 or 15 minutes after that, and then ride it like you stole it
Hi all way from Australia here mate love the channel very informative,was wondering if you could do a subframe removal and reinstall as there are no videos on tube covering this. I have a 2023 ktm 300 tpi. Let me know if this is an option. Appreciate it legend
Thank u for the video i have question please i have this bike im going to repair the top end but what the different between oem top end and vertex top end please help
I've been lead to believe piston/cylinder damage was due to a cold seizure. Bike never actually seized, but could have been improper warm up. I bought it used, so it could have been before I bought it but I really don't know. Ever since the rebuild I have been even more careful about letting it warm up fully before riding and making sure radiators are warm to the touch. As for priming, I believe it is only necessary if there is air in the line, such as in the case where you replace the oil pump. Maybe that is not correct, but the bike has been running great since the rebuild with no issues.
I am about to do a top end on my 2020 ktm exc 250tpi. I want to order all the parts (piston, seals, oil pump, oil screen and the power valve orings) prior to opening the engine since I want to ride it while I wait for parts. I want to order the same piston size as the stock one and then when I open the engine I will get the cylinder measured and if B piston will be needed, then I will return the A piston and buy a B piston instead. But chances are that A piston is what will be needed. Could you please tell me what the stock piston size is ? 250 exc/xcw has the same engine as your 250xc except the transmission. Thanks a lot.
Hi there, I ordered a B piston from Slavens since that's what they recommended for # of hours on the bike. But I ended up getting the cylinder replated anyway, so I sent the piston to Millennium with the cylinder. Best of luck with the rebuild. Sorry if this isn't a super helpful response!
Unless I'm mistaken not much needs to be measured with the power valve. As for the deck measurement, you're right. I used the closest cylinder gasket to stock and went with it. Didn't have the appropriate tools for Z height. Potentially worth investing in and something I should have mentioned. Hope you found it helpful otherwise!
@@KincadePavich Definitely helpful. I've never done a top end before and it is time to do mine. The RMATV video had the additional steps of deck height measurement and power valve setting. I think you're correct, there isn't much need to play with the power valve setting. The tool for both is available from RMATV for pretty cheap though if you wanted to measure both.
I cannot remember off the top of my head... I can look back and see what I have left. I remember trying to match the thickness to the one that came out of the bike as closely as I could.
“Crows feet” for the hidden cylinder bolts, works great.
1:28 is classic
Hahah love you caught that
@@KincadePavich gotta watch every detail of the video because one day a 250xc of Austrian origins will be mine!
Hi,
which 2t-oil did you use the 72 hours? Always the same?
Thank you for information.
There are open ends adpater that allows you to torque down bolts that aren't reachable with a socket. You just need to calculate the new torque value. Cheers
Is there a specific break in process you recommend for 2022 KTM 300 xcw?
I would do 3 full heat cycles without touching the throttle while it warms up. Gentle riding for first 10 or 15 minutes after that, and then ride it like you stole it
Hi all way from Australia here mate love the channel very informative,was wondering if you could do a subframe removal and reinstall as there are no videos on tube covering this. I have a 2023 ktm 300 tpi. Let me know if this is an option. Appreciate it legend
Thank u for the video i have question please i have this bike im going to repair the top end but what the different between oem top end and vertex top end please help
Great video!!!!!!!
Thanks hope it helped ya out!
Thank you
Do u always use ( M technology ) kustom kraft has had my cylnder for 7months
Awesome video!! Can you do one for the kx250s
I don't have a KX250 to put a top end in unfortunately!
Nice video. Why was your piston/cylinder so scored? And no oil pump priming before restart?
I've been lead to believe piston/cylinder damage was due to a cold seizure. Bike never actually seized, but could have been improper warm up. I bought it used, so it could have been before I bought it but I really don't know. Ever since the rebuild I have been even more careful about letting it warm up fully before riding and making sure radiators are warm to the touch. As for priming, I believe it is only necessary if there is air in the line, such as in the case where you replace the oil pump. Maybe that is not correct, but the bike has been running great since the rebuild with no issues.
The oil pipe is attached to the intake system not the motor. So isn’t disturbed when doing a top end.👍🏻
I am about to do a top end on my 2020 ktm exc 250tpi. I want to order all the parts (piston, seals, oil pump, oil screen and the power valve orings) prior to opening the engine since I want to ride it while I wait for parts. I want to order the same piston size as the stock one and then when I open the engine I will get the cylinder measured and if B piston will be needed, then I will return the A piston and buy a B piston instead. But chances are that A piston is what will be needed. Could you please tell me what the stock piston size is ? 250 exc/xcw has the same engine as your 250xc except the transmission. Thanks a lot.
Hi there, I ordered a B piston from Slavens since that's what they recommended for # of hours on the bike. But I ended up getting the cylinder replated anyway, so I sent the piston to Millennium with the cylinder. Best of luck with the rebuild. Sorry if this isn't a super helpful response!
Didn't see a deck measurement or measuring the power values setting??
Unless I'm mistaken not much needs to be measured with the power valve. As for the deck measurement, you're right. I used the closest cylinder gasket to stock and went with it. Didn't have the appropriate tools for Z height. Potentially worth investing in and something I should have mentioned. Hope you found it helpful otherwise!
@@KincadePavich Definitely helpful. I've never done a top end before and it is time to do mine. The RMATV video had the additional steps of deck height measurement and power valve setting. I think you're correct, there isn't much need to play with the power valve setting. The tool for both is available from RMATV for pretty cheap though if you wanted to measure both.
How do you know what size piston and rings to buy
Look at your cylinder it's stamped with a letter
What number gasket cylinder you use it?
I cannot remember off the top of my head... I can look back and see what I have left. I remember trying to match the thickness to the one that came out of the bike as closely as I could.