2012 Yamaha YZ250F Engine Rebuild Ep29

[@eddiestowers7636]

Great video I rebuilt a 05 yz250f Your info helped so much

[@restoroosterohv]

Glad to hear it. Thanks for watching and for your comment.

[@toddcornelius5817]

It's a awesome video,,, thanks for sharing the know how

[@MrPetRooster]

Thank you for your support and feedback!

[@toddcornelius5817]

Watching you start it!!!! I know that felt FU--ing

[@toddcornelius5817]

Good 👍

[@MrPetRooster]

It always feels great when something goes right, haha

[@jogscyborg]

Hi mate.. for yamaha yz250f two types of bolts are using to fix the oil tube on the head and block . One bolt with small jet and other bolt hav bigger jet .. top line goes to the cam shaft lubrication and next one for the gear box ..may i know which one is using on the head and which one using on the block..?

[@restoroosterohv]

That oil tube will only go on in one direction. I believe that the larger banjo bolt goes on the head.

[@jogscyborg]

@@restoroosterohvare you sure mate..?

[@jogscyborg]

@@restoroosterohvthe oil tube coming from the pump through the filter and one branch goes to the crank and the tube distributes the oil to the cam assy and gear box..

[@jogscyborg]

@@restoroosterohvand the nerrow jets in the both banjo bolts are the critical thing for maintaining the adequate oil pressure for the con rod bearing .. if the bolts fix in improper position, i think the pressure will loose, and the crank will seize… its a common issue for the yamaha yz series bikes…. Thank you mate…

[@restoroosterohv]

@jogscyborg you can’t mix them up

[@nickbugh1406]

Just bought mine blown up for $700. Having one hell of a time finding a good head. Awesome video. What is the break in process?

[@restoroosterohv]

They typically want you to run the engine at 3000rpm for a short time and then ride variably through the rpm range for a tank of fuel. Honestly most people run a heat cycle or two and ride them as normal.

[@mikenkaleigh]

Hey, i was always under the impression you can not lap titanium valves. I was always told there is a coating on them. It this true? Or is it just some wise tail.

[@restoroosterohv]

It’s true! Some Titanium valves have a coating on them that can become damaged if you lap them. Yamaha specifically says to lap the valves before installation in the service manual. Bottom line, Always follow the manufacturer’s guidelines when it comes to any facet of mechanical repair. Thanks for your question.

[@VitruviunMan]

I notice you always use rtv on the cases instead of the oem style paper gaskets? I always thought that the tolerances were designed with the paper gasket included?

[@restoroosterohv]

Not all engines use a gasket material but when they do, I will use them for sure

[@VitruviunMan]

@@restoroosterohv right on thanks for the videos man really like your straightforward style and also how you usually get the whole builds done in one video. Awesome brother keep on wrenching and I’ll keep watchin.

[@restoroosterohv]

I appreciate your continued support

[@juju-of2by]

It's a beautiful dog ! What's her name ?

[@restoroosterohv]

Thank you, her name is Caly

[@ABCsuspention]

Hello sir, I have a 2013 Yamaha yz250f....while the piston size is 76.98..akaha there are still sizes above.

[@restoroosterohv]

Yes, you can get larger or “big bore” kits for them. 77mm is standard

[@ABCsuspention]

Is there a piston kit size larger than the standard 77.mm, sir? Maybe a 78.mm piston.

[@restoroosterohv]

80mm would be the next size. The kit would include the oversized piston, rings and cylinder.

[@luisbrito1687]

Hey man, how to clean the engine head? What is materials you use?

[@restoroosterohv]

I use a parts washer but your could use brake parts cleaner

[@jakemyers4668]

how's the bike running with out that oil flow oil ring on the inside?

[@restoroosterohv]

The bike runs awesome! Thanks for watching.

[@vijaykorvekar1009]

Are there aftermarket transmission parts to make the engine for race track bike ?

[@restoroosterohv]

These transmissions are pretty stout and can handle all the power that the engine can produce. They are already designed for racing.

[@vijaykorvekar1009]

@@restoroosterohv reach up to speeds of 120mph or more

[@tasconomyworld2900]

Hi, i need your contact, i need more information about the kit, i want to buy mine....

[@restoroosterohv]

[e-mail]

[@edwardrodiguez8946]

Hey man, where are you from

[@restoroosterohv]

North Georgia

[@erickmurgasv8973]

I have a 06 rmz 250 engine, would you fix it for me?