How-to : Valve Clearance Check & Adjustment : Yamaha R6 Forum: R6MessageNet : YZF-R6 Forums
 
» Insurance
» Sponsors
» Yamaha YZF R6 Prices
Go Back   R6Messagenet.com > Yamaha YZF-R6 > R6 How-To Guides

Reply
 
LinkBack Thread Tools Display Modes
Old 06-02-2004, 09:20 PM   #1 (permalink)
Self Proclaimed Genius
 
ochlocracy's Avatar
 
Join Date: May 2004
Location: Sarasota & Naples FL
Posts: 5,512
Feedback Score: 10 reviews
Send a message via AIM to ochlocracy Send a message via MSN to ochlocracy Send a message via Yahoo to ochlocracy Send a message via Skype™ to ochlocracy
ochlocracy's Garage
Default How-to : Valve Clearance Check & Adjustment


Valve Clearance Check & Adjustment
Valve adjustments on the R6 can be pretty time consuming. Measuring will take you about 15-20min. The actual adjusting should take about 45min to an hour.

1. Start tearing down you bike

Remove plastics
Drain oil (not required but less messy)
Drain radiator (not required but less messy)
Remove Seat, tank
Remove air box
Remove carburetors
Remove radiator (if drained) or move down out of the way.
Disconnect ignition wires leading to your coils
Remove ignition coils
Use a 5mm allen wrench to remove the value cover bolts and then remove the valve cover.

This is what you should see by now.


2. Checking Valve Clearance

You are now going to need to remove the rather large circle cover on the pickup coil cover.


To check the valves you are going to need a feeler gauge to measure the distance between the cam lobes and the valve bucket. Try to find one that is based on the metric system, in fact we are going to keep everything in metric; because trying to figure out .005in is equal to .127mm is a pain in the ass. Also have and sheet of paper out and a pen.


Attach a 12mm socket the bolt that was behind the circle cover. With the ratchet turn clockwise to rotate the cams.


NOTE: Never turn counter clockwise, this direction is against the natural rotation of the engine and can do something really really bad; I donít know what exactly just donít do it.

Rotate the cams until the two cam lodes closest to you (cylinder #4) are facing up, and the value is completely closed.


With your feeler gauge check the valve clearance, by trying to cram that piece of metal in-between the cam lobe and the valve bucket.


NOTE: you are measuring the exhaust side currently and the clearance should be 0.21mm ~ 0.30mm so start with a 0.25mm feeler and go from there.


Find the largest feeler that will fit in-between. It is possible to cram a larger feeler then that of the clearance make sure you donít do this! The feeler should just slide nicely in-between.

Now write down the measurement on you sheet of paper, make sure you write it down corresponding to each value and cylinder.

Rotate the crank again, clockwise! Until you can check the valve clearance for cylinder #3. Repeat the clearance checking procedure then continue to cylinder # 2 and finally #1

Once youíve finished the exhaust side more over to the intake side and record the clearances there.

NOTE: Intake valve clearance should be 0.11mm ~ 0.20mm

Now look at your sheet of chicken scratch and use your common sense to determine if you clearances need to be adjusted.

REMEMBER:

Intake: 0.11mm ~ 0.20mm (0.0043in ~ 0.0079in)
Exhaust: 0.21mm ~ 0.30mm (0.0083in ~ 0.0118in)


If you decided that your clearances need to be adjusted remove the 20 bolts holding the cams in and remove them as evenly as possible.


Find a couple of clean (no lint) towels to set the cam shaft cover (cap) on. Next remove the exhaust cam and also set this on a clean towel. (I know my rags are dirty! Thats what carb cleaner is for.)


Now to make things a little easier later use a zip tie (or similar) to tie the cam chain to the clutch cable so it doesnít fall down inside the engine.


Now remove the intake cam and set it aside on a towel. Make note of which cam is which.


Now to make things easier get yourself a magnet to remove the valve buckets. Make sure you place them in the corresponding order.


{picture}

Inside each valve bucket you will find yourself a valve pad with a 3 digit number on it. This number corresponds to the thickness of the pad represented in millimeters but you need to throw a decimal in-between the 1st and the 2nd number. For example a pad with the number 182 on it is 1.82mm thick.

If you canít read the number on the pad you will need a caliper, or better a micrometer. Use one of these tools to determine the thickness of each pad.



Write these numbers as they correspond to each valve. This is the item you are going to replace in order to change the gap in-between each valve bucket and cam lobe.

You can use this spread sheet to determine the new pad thickness.
R6 Valve Pad Spreadsheet

Now the hardest part is probably getting new valve pads, my local shop was nice enough to allow me to swap out the pads I needed with my old ones.

Now that you have your new pads it is time to put your engine back together. Put your new pads on top of the corresponding valves and then place the corresponding valve bucket on it as well.

Now your ready to put everything back together. Refer to this thread to set your timing. http://www.r6messagenet.com/forums/s...ad.php?t=29054

© Copyright 2005 - R6Messagenet.com - All rights reserved.

Last edited by ochlocracy; 11-10-2004 at 01:10 PM.
ochlocracy is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-03-2004, 12:14 AM   #2 (permalink)
Member

 
blueblur's Avatar
 
Join Date: May 2004
Location: North MD
Posts: 5,078
Feedback Score: 6 reviews
Send a message via ICQ to blueblur Send a message via AIM to blueblur
blueblur's Garage
Default

That looks like a very good write up. I don't understand half of that but maybe I'll be up to the job one day.

A year ago I didn't think I'd go past taking off the plastics and I've already replaced the valve cover gasket (with some much needed help), but that write up looks very helpful. Good job
__________________
blueblur is offline   Reply With Quote
Old 06-03-2004, 03:29 AM   #3 (permalink)
EYE-KEY-TOE-SEN
 
ikkitousen's Avatar
 
Join Date: May 2004
Location: Bay Area, CA
Posts: 373
Feedback Score: 0 reviews
ikkitousen's Garage
Default

HOLY

F_CKING

SH_T

!!!!!!!!!!!!!!!

I LOVE YOU!!!!!!!!
Will you marry me!

I soooo needed this info. YOU RAT BASTARD! I AM NOT WORTHY!!!!!!!


--------------------------------------------------------------------------------
DAMN I THINK I OWE YOU MY FIRST BORN NOW!!!
ikkitousen is offline   Reply With Quote
Old 06-03-2004, 03:50 AM   #4 (permalink)
Senior Member
 
D duck's Avatar
 
Join Date: May 2004
Posts: 401
Feedback Score: 0 reviews
Send a message via AIM to D duck
D duck's Garage
Default

Nice write up, but to add.

Turning the crank CCW will not harm anything. In fact the manual states that to set the automatic cam chain tensioner to turn the crankshaft several turns counter clockwise.
D duck is offline   Reply With Quote
Old 06-03-2004, 04:02 AM   #5 (permalink)
Shes back!!
 
R6AJ's Avatar
 
Join Date: May 2004
Location: Chicago
Posts: 4,797
Feedback Score: 13 reviews
Send a message via ICQ to R6AJ Send a message via AIM to R6AJ Send a message via Yahoo to R6AJ
R6AJ's Garage
Default

Great post. When should I be checking?
__________________

We all undertake a modicum of risk everytime we thumb the starter - it's just inherent to the sport.
R6AJ is offline   Reply With Quote
Old 06-03-2004, 05:45 AM   #6 (permalink)
deacon flicka
 
csideblue's Avatar
 
Join Date: May 2004
Location: vegas
Posts: 4,189
Feedback Score: 25 reviews
Send a message via ICQ to csideblue Send a message via AIM to csideblue Send a message via Yahoo to csideblue
csideblue's Garage
Default

great post








.
__________________
WERA West Novice #831



Quote:
Originally Posted by Jonathan
BTW, I don't need to take anyone to dinner to bang them. If they want food they can go get it, if they want dick they can call me.
csideblue is offline   Reply With Quote
Old 06-03-2004, 08:40 AM   #7 (permalink)
I will not eat cat poop!
 
NemesisR6's Avatar
 
Join Date: May 2004
Location: Palm Bay, FL
Posts: 4,370
Feedback Score: 19 reviews
Send a message via ICQ to NemesisR6
NemesisR6's Garage
Default

Wow. Nice work Ohlocracy.
__________________
"On a long enough timeline, the survival rate for everyone drops to zero." - Narrator
NemesisR6 is offline   Reply With Quote
Old 06-03-2004, 10:21 AM   #8 (permalink)
Jimmie cracked corn
 
Join Date: May 2004
Posts: 973
Feedback Score: 0 reviews
vinnier6's Garage
Default

Quote:
Originally Posted by R6AJ
Great post. When should I be checking?
26000 miles is the first valve lash service/inspection...

when he says pads, he is refering to shims...if you go to your dealers parts department and ask for pads they might give you brake pads...
vinnier6 is offline   Reply With Quote
Old 06-03-2004, 10:30 AM   #9 (permalink)
Member
 
Join Date: Jun 2004
Location: Daytona beach
Posts: 42
Feedback Score: 0 reviews
Jprider's Garage
Default

Nice job! How much difference (avg) did you see for adjustment and how many miles on your ride? It seems more times than not you go to do this and no adjustment is needed? Just wondering...
__________________
JPrider. 03 black w red flames, Akra Ti.
Jprider is offline   Reply With Quote
Old 06-03-2004, 03:07 PM   #10 (permalink)
Gossamer has MOJO!!!
 
Big Deezul's Avatar
 
Join Date: May 2004
Location: Hanover, Pa
Posts: 15,531
Feedback Score: 34 reviews
Send a message via ICQ to Big Deezul Send a message via AIM to Big Deezul
Big Deezul's Garage
Default

really good write up
Big Deezul is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Powered by vBadvanced CMPS v3.2.2


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum
R6MessageNet.com is an independent Yamaha enthusiast website. Content on R6MessageNet.com is generated by its users and R6MessageNet.com is not in any way affiliated with Yamaha Motor Corporation, U.S.A.