Jump to content
DavidS

Did your FJ09 have tight valves at 26.6 mile/42km Service?


Recommended Posts

Just checked my valves again at 40k km and all are perfect as they were at 20k.

Only pisser was the brand new cam cover gasket I had in stock was split so I now need to get another one. 

  • Sad 1

Share this post


Link to post
Share on other sites

I checked mine first at 24k miles and ALL were tight, exhausts especially so.

Checked again at 35k +/- miles and all were still good.  🙂

Fingers crossed they stay that way to 55k+ miles and I'll be 🙂

  • Thumbsup 2

Share this post


Link to post
Share on other sites
On 6/29/2020 at 9:04 PM, Buggy Nate said:

Just checked my valves again at 40k km and all are perfect as they were at 20k.

Only pisser was the brand new cam cover gasket I had in stock was split so I now need to get another one. 

That blows me away- 100% of the ones I’ve checked always require exhaust valve adjustment. Closest I got was an FJ09 a few weeks ago that was only out by .05mm. 

-Skip

  • Thumbsup 1

Share this post


Link to post
Share on other sites
1 hour ago, skipperT said:

That blows me away- 100% of the ones I’ve checked always require exhaust valve adjustment. Closest I got was an FJ09 a few weeks ago that was only out by .05mm. 

-Skip

Agree with you, every report I have read on any CP3 valve adjustment (at least the first one) needed exhaust valve shims.  I think @Buggy Nate might be the first and only to report 'perfect'.🏆

  • Thumbsup 1

***2015 Candy Red FJ-09***

Share this post


Link to post
Share on other sites

As I've reported before, on my first slightly early check ALL were VERY tight.  I was so concerned I rechecked in only 10,000 or so miles and all were good.  Is it poor factory assembly or valve recession / burning?!

Share this post


Link to post
Share on other sites
9 hours ago, skipperT said:

That blows me away- 100% of the ones I’ve checked always require exhaust valve adjustment. Closest I got was an FJ09 a few weeks ago that was only out by .05mm. 

-Skip

0.27-0.28 for the exhausts, all the inlets were 0.15mm.

To be fair I am pretty anal with filter maintenance and I rather use the mid range and the torque of the motor rather than valve bounce it. 

Not sure if that makes any difference. I’ll check them again at 60,000km.

  • Thumbsup 1

Share this post


Link to post
Share on other sites

I've had the clearances checked 3 times. According to the Yamaha tech, they were good every time. 

  • Thumbsup 1

I like Guns...

Share this post


Link to post
Share on other sites
Posted (edited)
On 7/2/2020 at 12:27 AM, 2and3cylinders said:

As I've reported before, on my first slightly early check ALL were VERY tight.  I was so concerned I rechecked in only 10,000 or so miles and all were good.  Is it poor factory assembly or valve recession / burning?!

IMHO.... probably the later, but I don’t have any kind of engineering background. Though I haven’t seen/heard a single case caused by materials degrading in the seat area a-la CRF250/450 style (those failed usually due to dirt wearing away the coating because of poor air filter maint).

the exception was that one guy (can’t remember his name) that actually popped up here recently selling the extra cyl head that he bought. 

congrats to Micah and Buggy for having a valve train that seems to wear very little. I think those are the minority for whatever reason. 

my $.02

-Skip

Edited by skipperT
  • Thumbsup 2

Share this post


Link to post
Share on other sites
2 hours ago, skipperT said:

IMHO.... probably the later, but I don’t have any kind of engineering background. Though I haven’t seen/heard a single case caused by materials degrading in the seat area a-la CRF250/450 style (those failed usually due to dirt wearing away the coating because of poor air filter maint).

the exception was that one guy (can’t remember his name) that actually popped up here recently selling the extra cyl head that he bought. 

congrats to Micah and Buggy for having a valve train that seems to wear very little. I think those are the minority for whatever reason. 

my $.02

-Skip

vinnie was his name.

I do have an engineering background, and I still couldn't tell you why the valves are consistently tight. Honestly if that's the largest engineering flaw of these motorcycles, it ain't too bad. 

  • Thumbsup 1
  • Like 1

'15 FJ09

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×