Yamaha R6 Forum: YZF-R6 Forums banner

41 - 60 of 157 Posts

·
My R6 hurts my Nutters
Joined
·
2,232 Posts
I was at 33k and thought it needed a valve adjustment but when mr chad wolfe checked my valves it was just a tad bit tighter but still within spec....btw my bike had the same sluggish symptoms as you and I had a manual cam chain tensenor..the cam chain was a bit loose thats was the problem
 

·
pin it to win it
Joined
·
8,080 Posts
If they tick they are ****ed, as in piston valve contact lol. And you'll know when you hear that sound...

I didn't even remove that piece. Just took the 2 bolts that holds the cct on.
 

·
Shred til your Dead
Joined
·
476 Posts
One obvious very important step is being sure timing marks are right when all is back together . Turn motor over by hand with plugs out . If you are off one tooth advanced piston will hit valve . Many motors have been destroyed by cranking with cam timing errors .
I just got done slotting my sprockets and degreeing cams . A tiny amount of slotting makes for a huge change in cam timing . Just have to check piston to valve clearance when done
 

·
( . Y . )
Joined
·
3,176 Posts
I'll be sure to mark those cam sprockets. Thanks... Theyres a pretty good 3 part how to vid on adjusting valves ill be watching to help me do my valve adjustment today :cheers
 

·
pin it to win it
Joined
·
8,080 Posts
If you run into any snags let us know and we can walk you thru.
 

·
( . Y . )
Joined
·
3,176 Posts
Well the valve adjustment ended up being a success! =) It seemed to be a pretty easy job with no trouble at all, and no extra bolts left over :). Its just very time consuming like how everyone says. It took a good 8 hours of working on her for me to complete the job. I triple checked all my measurements, torques, and took my time with it to make sure everything was T&A. All the valves on the intake side were in spec except one on cylinder #4. For the exhaust side, they were all at the min on the tolerance gap, so I bumped the exhaust valves all up to middle of the tolerance gap. I took her out for a short ride today, she seems to be liking the adjustment a lot. Next ill be doing the throttle body sync, then I can finally get her tuned =) Thanks for all the help guys, heres some pics


 

·
pin it to win it
Joined
·
8,080 Posts
Link? How-to?
I don't have it with me but there is a good one r6 message net for 2nd Gens


Hey Morrow, you learn any short cuts? I got down to under 3 hours now.
 

·
pin it to win it
Joined
·
8,080 Posts

·
( . Y . )
Joined
·
3,176 Posts
I don't have it with me but there is a good one r6 message net for 2nd Gens


Hey Morrow, you learn any short cuts? I got down to under 3 hours now.
Damn , 3 hours that's impressive :bow...Ha next time I know I can cut the time in half, ill try to shoot for your record
 

·
pin it to win it
Joined
·
8,080 Posts
I just figured out how to do it with the tank on, radiator just moved forward, and to pull the air box and throttle bodies out in one piece.
 

·
( . Y . )
Joined
·
3,176 Posts
Nice, ya the tank I propped up , air boxed removed , radiator removed, throttle bodys I just loosened and moved them back just enough for the valve cover the clear. I also removed most of the carbon build up on the TB's and air box .
 

·
pin it to win it
Joined
·
8,080 Posts
You know how the air box is attached to the throttle bodies with those few bolts? If you just loosen the throttle bodies you can pull the air box off with the throttle bodies still attached to it.
 

·
Registered
Joined
·
1,656 Posts
Well the valve adjustment ended up being a success! =) It seemed to be a pretty easy job with no trouble at all, and no extra bolts left over :). Its just very time consuming like how everyone says. It took a good 8 hours of working on her for me to complete the job. I triple checked all my measurements, torques, and took my time with it to make sure everything was T&A. All the valves on the intake side were in spec except one on cylinder #4. For the exhaust side, they were all at the min on the tolerance gap, so I bumped the exhaust valves all up to middle of the tolerance gap. I took her out for a short ride today, she seems to be liking the adjustment a lot. Next ill be doing the throttle body sync, then I can finally get her tuned =) Thanks for all the help guys, heres some pics


good job morrow :YEA as much as i want to do my own maintenance, i dont think i have the balls to do this:thumbdown
 

·
( . Y . )
Joined
·
3,176 Posts
Here are the measurements I got for my bike by the way. For the 03-04 model R6 manual calls for 13~20 mm on In and 23~30 mm on Ex

Before:

----- Cyl #1 -- Cyl #2 --- Cyl #3 ---- Cyl #4
Ex: [.23|.23] [.23|.23] [.23|.23] [.23|.20]

In: [.15|.18] [.15|.15] [.15|.15] [.15|.13]

After:

----- Cyl #1 -- Cyl #2 --- Cyl #3 -- Cyl #4
Ex: [.27|.27] [.26|.26] [.29|.28] [.27|.27]

In: [.15|.18] [.15|.15] [.15|.15] [.15|.18]
 

·
( . Y . )
Joined
·
3,176 Posts
Im trying to get ready for my custom tune soon. So far ive done a valve adjustment , spark plugs , air filter , some sea foam in the tank and a little in the oil, and a fresh oil change. Im waiting for my carbtune tool to arrive from the uk, it should be here this week. So after im done doing the throttle body sync is their anything else I can/should do before hand for best possible results?
 
41 - 60 of 157 Posts
Top