What happened to Barcia's YZF?

benstone wrote:

TV doesn't do justice to the sound of SX but Bam Bam is on another noise level. If you go to a race with him in...

TV doesn't do justice to the sound of SX but Bam Bam is on another noise level. If you go to a race with him in it, close your eyes for one lap and I can guarantee you'll know when he goes by. He bounces that engine of the limiter non-stop. It's not just on the ground - he also spins the shit out of it in the air on jumps too. It would be interesting to have him and Roczen do a 1:1 race like they do in the middle of Arenacross. Roczen is sooooo smooth and hardly seems like his bike is running and then Barcia is there piss-pounding that poor engine like it stole his girlfriend.

JOE_SPROCKETS#1 wrote:

Him claiming to run a more stock motor set up this year have anything to do with it?

kiwifan wrote:

Doesnt seem to be any damage to the valve itself, obviously the valve stem is buggered, if the valve 'fell in the hole' surely the damage...

Doesnt seem to be any damage to the valve itself, obviously the valve stem is buggered, if the valve 'fell in the hole' surely the damage would of been worse? (I have seen one to be able to ratify that or not)

Momus wrote:

That looks like a stock standard Yamaha valve.

What do you mean that shot tells us everything we need to know about Crower's engine program?

mxtech1 wrote:

Look my friend. Yamaha signed Barcia back in, what 2017? He's always rode with that style and Yamaha knew that when they signed him. Yamaha's bike...

Look my friend.

Yamaha signed Barcia back in, what 2017? He's always rode with that style and Yamaha knew that when they signed him. Yamaha's bike was/is notoriously strong down low and equally powerful through the rest, but not necessarily made to live in the upper end of the RPM range. Thus, the chassis was developed to handle well not on the top end. For over 2 years now, Barcia has been trying to perfect a slightly different riding style lower in the power range. His results have reflected that, in my opinion. It appeared Yamaha was more rigid on making him adapt to the "base" package as opposed to changing the bike to fit his famous riding style until the start of this season.

Yamaha & Barcia have been very vocal about changes to the bike this year to allow him to ride the bike his most natural way....in the upper end. His speed and ability to move forward in a main this year have been noticeably stronger than the past 2 years, and it's because Yamaha has made engine changes that can support that riding style.

If Dan has his valves, it means he is doing head work for Factory Yamaha. At a minimum, they are using him for valves and likely cam & piston development, but I wouldn't be surprised if Crower was doing complete head assemblies for them. Crower is infamous for making some screamer bikes. Factory Yamaha probably does the from the cylinder down.

Barcia needed a new head to make that bike and his riding come alive. I'm sure Yamaha and Crower are still tweaking things as they gain experience. That huge jump into the sand this weekend that caused simultaneous compression of the suspension and loss of speed, landing wide open lap after lap, places a huge load on that motor...talking peak loading scenarios over short durations of time. It's a scenario they probably didn't test for yet and it might have exposed a weakness in the motor they haven't solved yet. Cuz remember, to get em to spin higher and faster means lighter rotating mass and increased compression.

I'm happy to see Yamaha invested the extra money this year to make the bike work for him. I want to see him stay strong with his old riding style and challenge these guys for podiums and wins. I expect to see Barcia turn it up out East when they get in better dirt that ruts up where his new package is going to shine. We got a glimpse of it at St. Louis where he was fast all day, qualifying 5th, and then rode great to a 2nd place finish in the main while keeping Roczen to less than 5 seconds.

kiwifan wrote:

Except wasnt Barcia (or his team) quoted that he is trying to change his riding style to be lower in the rev range, and indeed the...

Except wasnt Barcia (or his team) quoted that he is trying to change his riding style to be lower in the rev range, and indeed the first round he was doing that, and he (ironically) won that round. So IF that is the case, then why would they build a screamer motor for a different riding style?

deluxeman wrote:

His motor is not stock. It has all the trick factory parts in it. Full ti valve train, special design piston, hand ported head, hand made...

His motor is not stock. It has all the trick factory parts in it. Full ti valve train, special design piston, hand ported head, hand made ti pipe. His cam specs maybe closer to stock than normal but that motor is no where near stock.

mxtech1 wrote:

Look my friend. Yamaha signed Barcia back in, what 2017? He's always rode with that style and Yamaha knew that when they signed him. Yamaha's bike...

Look my friend.

Yamaha signed Barcia back in, what 2017? He's always rode with that style and Yamaha knew that when they signed him. Yamaha's bike was/is notoriously strong down low and equally powerful through the rest, but not necessarily made to live in the upper end of the RPM range. Thus, the chassis was developed to handle well not on the top end. For over 2 years now, Barcia has been trying to perfect a slightly different riding style lower in the power range. His results have reflected that, in my opinion. It appeared Yamaha was more rigid on making him adapt to the "base" package as opposed to changing the bike to fit his famous riding style until the start of this season.

Yamaha & Barcia have been very vocal about changes to the bike this year to allow him to ride the bike his most natural way....in the upper end. His speed and ability to move forward in a main this year have been noticeably stronger than the past 2 years, and it's because Yamaha has made engine changes that can support that riding style.

If Dan has his valves, it means he is doing head work for Factory Yamaha. At a minimum, they are using him for valves and likely cam & piston development, but I wouldn't be surprised if Crower was doing complete head assemblies for them. Crower is infamous for making some screamer bikes. Factory Yamaha probably does the from the cylinder down.

Barcia needed a new head to make that bike and his riding come alive. I'm sure Yamaha and Crower are still tweaking things as they gain experience. That huge jump into the sand this weekend that caused simultaneous compression of the suspension and loss of speed, landing wide open lap after lap, places a huge load on that motor...talking peak loading scenarios over short durations of time. It's a scenario they probably didn't test for yet and it might have exposed a weakness in the motor they haven't solved yet. Cuz remember, to get em to spin higher and faster means lighter rotating mass and increased compression.

I'm happy to see Yamaha invested the extra money this year to make the bike work for him. I want to see him stay strong with his old riding style and challenge these guys for podiums and wins. I expect to see Barcia turn it up out East when they get in better dirt that ruts up where his new package is going to shine. We got a glimpse of it at St. Louis where he was fast all day, qualifying 5th, and then rode great to a 2nd place finish in the main while keeping Roczen to less than 5 seconds.

mxtech1 wrote:

Look my friend. Yamaha signed Barcia back in, what 2017? He's always rode with that style and Yamaha knew that when they signed him. Yamaha's bike...

Look my friend.

Yamaha signed Barcia back in, what 2017? He's always rode with that style and Yamaha knew that when they signed him. Yamaha's bike was/is notoriously strong down low and equally powerful through the rest, but not necessarily made to live in the upper end of the RPM range. Thus, the chassis was developed to handle well not on the top end. For over 2 years now, Barcia has been trying to perfect a slightly different riding style lower in the power range. His results have reflected that, in my opinion. It appeared Yamaha was more rigid on making him adapt to the "base" package as opposed to changing the bike to fit his famous riding style until the start of this season.

Yamaha & Barcia have been very vocal about changes to the bike this year to allow him to ride the bike his most natural way....in the upper end. His speed and ability to move forward in a main this year have been noticeably stronger than the past 2 years, and it's because Yamaha has made engine changes that can support that riding style.

If Dan has his valves, it means he is doing head work for Factory Yamaha. At a minimum, they are using him for valves and likely cam & piston development, but I wouldn't be surprised if Crower was doing complete head assemblies for them. Crower is infamous for making some screamer bikes. Factory Yamaha probably does the from the cylinder down.

Barcia needed a new head to make that bike and his riding come alive. I'm sure Yamaha and Crower are still tweaking things as they gain experience. That huge jump into the sand this weekend that caused simultaneous compression of the suspension and loss of speed, landing wide open lap after lap, places a huge load on that motor...talking peak loading scenarios over short durations of time. It's a scenario they probably didn't test for yet and it might have exposed a weakness in the motor they haven't solved yet. Cuz remember, to get em to spin higher and faster means lighter rotating mass and increased compression.

I'm happy to see Yamaha invested the extra money this year to make the bike work for him. I want to see him stay strong with his old riding style and challenge these guys for podiums and wins. I expect to see Barcia turn it up out East when they get in better dirt that ruts up where his new package is going to shine. We got a glimpse of it at St. Louis where he was fast all day, qualifying 5th, and then rode great to a 2nd place finish in the main while keeping Roczen to less than 5 seconds.

kiwifan wrote:

Except wasnt Barcia (or his team) quoted that he is trying to change his riding style to be lower in the rev range, and indeed the...

Except wasnt Barcia (or his team) quoted that he is trying to change his riding style to be lower in the rev range, and indeed the first round he was doing that, and he (ironically) won that round. So IF that is the case, then why would they build a screamer motor for a different riding style?

snowy816 wrote:

K1W1 that was a while ago - there is an interview somewhere recently where Barcia bring this point up. He stated everyone was always trying to...

K1W1 that was a while ago - there is an interview somewhere recently where Barcia bring this point up. He stated everyone was always trying to get him to change his riding style and he went backwards. New guys working with him told him, go back to the way you have always ridden and we will accommodate accordingly..

kiwifan wrote:

However, in round 1 he was riding lower in the RPM's...did you watch that race? Happy to be proven otherwise. Perhaps him riding in lower RPM's...

However, in round 1 he was riding lower in the RPM's...did you watch that race? Happy to be proven otherwise.

Perhaps him riding in lower RPM's on a screamer motor worked for him?

Thisusernameisavailable wrote:

Any inside info? Unusual to see the big bikes fail these days, particularly at SX where the motor isn't getting such a hammering. I was wondering...

Any inside info?

Unusual to see the big bikes fail these days, particularly at SX where the motor isn't getting such a hammering. I was wondering if anyone was in the pits and got word about what went wrong?

Did they swap a motor? If so, how long did it take and how many men were on it (if you were there?)

slipdog wrote:

[img]https://p.vitalmx.com/photos/forums/2020/02/02/401858/s1200_Screenshot_2020_02_02_at_9.37.08_AM.jpg[/img]

SEEMEFIRST wrote:

That sumbitch must have fallen in the hole.

That's pretty amazing.

kiwifan wrote:

Doesnt seem to be any damage to the valve itself, obviously the valve stem is buggered, if the valve 'fell in the hole' surely the damage...

Doesnt seem to be any damage to the valve itself, obviously the valve stem is buggered, if the valve 'fell in the hole' surely the damage would of been worse? (I have seen one to be able to ratify that or not)

Thisusernameisavailable wrote:

Any inside info? Unusual to see the big bikes fail these days, particularly at SX where the motor isn't getting such a hammering. I was wondering...

Any inside info?

Unusual to see the big bikes fail these days, particularly at SX where the motor isn't getting such a hammering. I was wondering if anyone was in the pits and got word about what went wrong?

Did they swap a motor? If so, how long did it take and how many men were on it (if you were there?)

zippytech wrote:

You guys talking about how he hits the rev limiter big deal... I have seen guys at AMA nationals rev old junk for hours on end...

You guys talking about how he hits the rev limiter big deal... I have seen guys at AMA nationals rev old junk for hours on end on Saturday night.

JB 19 wrote:

It's flat out amazing. I've watched guys at Mid Ohio when they had the Super Bike races hold stock sport bikes on the limiter for most...

It's flat out amazing. I've watched guys at Mid Ohio when they had the Super Bike races hold stock sport bikes on the limiter for most of the evening and night. Red hot exhaust headers, flames coming out of the muffler.... the level of abuse they can endure is like a magic trick.