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You're a life saver Chuck. Putting an 18-23 cylinder on a 19 and I was really confused about z-height adjustment because of the lack of stopper.

What do you do if the stream is fat and low pressure?

What is your choice for hard enduro?

Hey Chuck, I'm moving into a new house and looking to setup a nice workbench area in my garage. I'd love to see a video of your shop, and listen to you talk about what makes a good efficient layout, how much counter space you need, etc. I feel like you have a ton of valuable experience to share with the rest of us here. Thanks!

Totally completely agree, the 4CS forks are the worst forks in the history of KTM. That’s where the big plus is on the Kove.

😂😂😂😂😂😂😂

You are not the only one to notice the ring difference. I have done less than 100 top ends over the years but it went from never filing rings to always the last few years. And this is on older Japanese 2 strokes.

A piece of string is ALWAYS twice the length from middle to end 👍🙂

I'm doing a XR200 with that setup right now. All the rubber on the manifolds and stuff just fell apart when I tried to take it apart. I'm now building an intake manifold and have a shinny new Lectron carb for it. From super complicated to super simple (no jetts!!!) Should be interesting.

I think the 790 has eighty jets

You got lucky, aluminum body and steel screw , always stuck

Please no music. Hard time hearing you speak.

Or you could just use an easy out

Vinegar?

I'm wondering if the porosity helps with lubrication?

Legends! Great chat, thanks for the info.

St. Pierre Moteur in Qc is the other plating company, I've used them, seemed like a great company. They gave me a Purolator account number, so I could send my cylinder in, and they charge roughly $450 for a 300 KTM, they also offered a piston which needs to be matched to the cylinder plating. In the future I would maybe just let them sell me the piston they offered. The only downside I saw to this whole procedure is they want you to put your CC information on a sheet you fill out and send with the cylinder.

Thanks for doing this Chuck - such an interesting discussion with very useful information.

This video answered a ton of questions for me thanks 🙏

I would try hitting it with a punch 2 or 3 times and then use a flat chisel to try to get it to turn works on gm rotors that have a similar screw on rotors

Love these discussions and all of your content. I hope you’re aware of how refreshing it is to have someone in the field that is willing to share and teach without any layer of curmudgeonry. I used to enjoy the character of the curmudgeon in media such as Car Talk with Click and Clack, but I’ve found the real world curmudgeon’s to be less entertaining and often lack the core of curiosity and caring that I assumed was required to build and maintain relationships and knowledge towards what we’re trying to accomplish. You’ve helped me fast track so many plans and methods that I’m implementing in my shop. I really can’t thank you enough!

Iron eagle bud. Wheelers revenge.

RFVC were notorious for top end problems. Solution? DOHC water cooled Suzuki DRZ400.

When running correctly that setup made more power than the single carbed versions…but the added complexity and weight!

Just use an heated ultrasonic cleaner bud makes that job super easy

Ugh, buddy of mine has an old xr500 with that carb set up, it has yet to run right for more than about two minutes on pretty much any ride we've been on.

I bought Yamalube combustion chamber cleaner today, they were all out of the yamalube "carb cleaner" ;)

Make it flip uppable . Pressure from below pushes it towards the engine flipping it up and inwards .

1500rpm below redline, change the damn oil, service before the due date and pretty much any engine is indestructible.

Nothing better than ol drift spec ziptie jobs!

Riding singletrack/hard enduro recreationally here in upper Michigan we get 200 to 300 hours on our 300 2t,s no problem.I replaced the top end on my 21 beta RR at 172 hours(new brand to me so I was curious).It was a waste of money as it was almost like new( but I feel better lol).Our super tight trails and almost never wfo definitely makes a difference to making a longer string.When I raced heavy on yz 250,s 100 hours was needed to avoid a boom.My pistons always came out nice but I was afraid of a piston being fatigued and breaking as bike was seeing enduro to mx racing (A class for many years).My last bike was a 2015 sx250 with 300 kit fully converted to offroad.3 pistons in 600 hours(from conversion )and stock crank(KTM 2t,s have awesome cranks if you keep a clean filter).

A thorough check over at the beginning gives a realistic vision to the customer and makes the mechanic more money in the long run. Win-win.

I like watching your videos and hear your thoughts on repair solutions

RPM, Air filter cleanliness and oil changes are to me the three biggest factors. If your on a 4 stroke and bounce off the rev limiter all day at the track your bike wears out WAY faster then a dude just off idle all day in the woods. Dirty air and oil kills motors.

Good one, a new trick to learn from.

Ok, that makes sense, now you have two 250cc motorcycles for the same type of use (motocross, or enduro for example), one is 2 stroke and the other one is a 4st, they can actually be from the same maker, lets say ktm. The same pilot uses both, which one wears out first?

Can you do a video on how you measure valve seats

The PO did rebuild the crank at some point and Im wandering if he put the mains in wrong, should the bearings be facing up so you can see the brand and numbers or down so you cant read them?

Love me some zip tie stitches. Not pretty but perfectly functional.

Have you tried repairs with heated staples (called plastic welding but not real plastic welding) been holding on my looped Beta for 2 yeats

Say no to crack, kids.

Nice. Didn't know that was available. Who makes this?

Shouldn’t you use flat clamps on silicone hoses? Genuinely asking, I heard the serrated clamps damage the hose.

Wheres my third hand

❤ True mechanic vs. uninterested motorcycle employee working in a specific brand garage 😢

And it will take 45 minutes to fix

Usually when my buddy starts talking sbout stripped trannies i gotta leave but this was a nice watch

$2500 for a top end and transmission rebuild. Holy moly

Can you do a video on valve seat measuring

Uh, did you miss the slop when you turned crankshaft?