I can't believe that the seats weren't cut to suit new valves and lapped the valves in and redo clearances that's how we done it in the old days seems like a half job to me 🤔
Эх если бы наш завод мото иж развивался была бы жосткая конкуренция. Я владелиц иж пс К16 хороший мотоцикл, но старый 89г до сих пор китайцы рядом не стояли по качеству и цене.
It's more about reliability.. they are working on a used bike, had it been a full out race bike titanium would have been a better option, of course cost reflects
@@anthonyvu749 not sure if they do, I'd just call them and ask but I would think that they would have an option because they offer the steel kits. It would just be a matter of spring pressure and rate
I maintained it perfect but im not sure about the previous owners lol it recently jumped a tooth on the intake cam causing it to run like crap. Then i noticed the crank has slight up and down play so now im doing a full rebuild
Are the spare parts for the YZ250F 5 valve engine still around until now ??? I really want to wake up my broken machine ... it's been 1 month in Indonesia that I can't find it too ... how can I find it
Great video. I've got my eyes on an 06 YZ as well so I enjoyed seeing the video.
Question: What are correct number of cam chain pins between 12:00 o'clock" marks on the cams for (2005) yz450f ?
is it.....is it really called prox and not pro x?!!?!?!?!?!?!
Should we check with finger on valve guide on both intake and exhaust side for that suction feeling??
I can't believe that the seats weren't cut to suit new valves and lapped the valves in and redo clearances that's how we done it in the old days seems like a half job to me 🤔
right?!
I was wondering as a car and light truck tech... I know car engine valves at least have to be lapped and seated.
Amazing video sir,do you guys ship to different countries
What condition were the cam journals and lobes?
Why did you embed a link in the description section where I can buy your valves and gaskets?
Precise workmanship. And this five valve head! Greetings :).
Are your stock valves not titanium?
ugg why replace the Ti valves with stainless? Really silly thing to do.
Good
Dont you need to lap the valves?
only steel valves, titanium dont get lapped. edit: i posted before watching. I assumed they used titanium valves.
Эх если бы наш завод мото иж развивался была бы жосткая конкуренция. Я владелиц иж пс К16 хороший мотоцикл, но старый 89г до сих пор китайцы рядом не стояли по качеству и цене.
would it be worth it to buy a 2004 yz450f that needs a new head? theyre asking 500 for the bike
Did you end up doing it
500 bucks is a steal
no unfortunately he sold it an hour after i posted the comment lol
Why would you ever replace titanium valves with steel
becose thry junk
It's more about reliability.. they are working on a used bike, had it been a full out race bike titanium would have been a better option, of course cost reflects
rtkl13 do you know if prox has springs for their titanium valves?
@@anthonyvu749 not sure if they do, I'd just call them and ask but I would think that they would have an option because they offer the steel kits. It would just be a matter of spring pressure and rate
Stock yamaha parts will out live performance parts ... these old engines last 100s of hours when maintained properly.
Im rebuilding my wr450f now getting oem everything. Its a good feeling putting new oem parts back in it
@@frankiemarchese2978 good mate oem is the way to go. Just change the oil every 4 to 5 ride and she will last forever. All about that maintenance.
I maintained it perfect but im not sure about the previous owners lol it recently jumped a tooth on the intake cam causing it to run like crap. Then i noticed the crank has slight up and down play so now im doing a full rebuild
@@frankiemarchese2978 oh god ! Most likely the old owner never looked after it... people don't care about there bikes these days aha
Yup oil was probably barely changed lol
Buen video saludos de Argentina.
5 valve🤩
5 valve 😲😲😲
Vn đâu ae
Are the spare parts for the YZ250F 5 valve engine still around until now ??? I really want to wake up my broken machine ... it's been 1 month in Indonesia that I can't find it too ... how can I find it
nice job idol
motor lover here i hope u can visit me alsa
It's pronounced Pro Cross