Since '02 xBhp is different things to different people. From a close knit national community of bikers to India's only motorcycling lifestyle magazine and a place to make like minded biker friends. We have one common religion - Bikeism.

T-shirt
Magazine
Castrol Power 1

Accelerate quick but brake easy.

Our Partners



User Tag List

Page 1 of 3 123 LastLast
Results 1 to 10 of 24
Like Tree19Likes

Thread: Valve clearance setting-RTR180

  1. #1
    Rusted Drifty's Avatar
    Join Date
    Aug 2010
    Location
    Mumbai,Dombivli
    Posts
    710
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)

    Arrow Valve clearance setting-RTR180

    Valve clearance setting:
    The valves are an integral part of an engine. They open and close, allowing in a mixture of air and petrol into the combustion chamber of the engine.After some period,the valves do not open enough, not allowing in enough air and fuel, or open too much, allowing in too much air and fuel. In either case, the engine will not function properly.Hence it becomes necessary to adjust the valves of your motorcycle to help it run smoothly.

    To let the air/fuel mixture in to the engine we have intake valves. To let it out we have exhaust valves. However, if these valves don't open and close at the right time the engine will not run. Worse still, if the valves open at the wrong time they can be hit by the piston and bent.If you cannot get it exact then it is better to have a slightly slack tappet than a tight one.If both valves had no clearance, meaning they were both slightly held open all the time then that might give rise to some very severe starting difficulties, let alone running.Exhaust valves are more prone to damage since they run hotter than the intake valves.The intake valves are cooled by the incoming air and fuel.
    Make sure you have all the necessary tools for this D.I.Y
    Feeler gauge:It helps you adjust the opening of the valve.The feeler gauge has a graduated thickness all around its outer edge, from very thin to thicker. The thickness are marked so that you can match the thickness of the gap to that required by the manufacturer. This tool is helpful for measuring the thickness of the gap on valves as well as spark plugs.

    Before you start this,the engine needs to be completely cool,bone cold!

    Tools required:

    1)12mm spanner(to remove the tank)
    2)17mm ring spanner
    3)17mm open end spanner
    4)9mm ring spanner
    5)Tappet adjusting tool/Forceps
    6)Feeler gauge strip(0.06mm,0.08mm)
    7)10mm allen key
    8)16mm spark plug spanner and a screw driver
    9)16mm ring spanner(for removing spark plug)-optional



    Feeler guage:





    Procedure:

    Remove the tank,remove the spark plug as well(optional)

    Step 1:Remove the intake and exhaust valve cover with the 17mm ring spanner.









    Step 2:



    Remove the crankshaft position inspection bolt and crankshaft rotation bolt cover with the 17mm open end spanner and 10mm allen key respectively.









    Step 3:
    In a 4-stroke engine,the piston reaches TDC at two strokes-the compression stroke & exhaust stroke.During the compression stroke,both the inlet and exhaust valves are closed.It is this point we have to adjust the valve clearance.

    This step is very critical.Now insert the spark plug spanner over the crankshaft rotation bolt and turn the screw driver in anti-clockwise direction until you see a ''T'' mark in the inspection window.
    This is to ensure that piston is at the Top Dead Center(TDC) on the compression stroke(just after the inlet valve closes).Check for some movement in the rocker arms and valve (grab it with your fingers and move it up and down,there must be some play),this will ensure that the piston is at TDC of compression stroke.



    Ok now you can proceed.

    Step 4:




    Now loosen the lock nut with a 9mm ring spanner and adjust the adjustment bolt.Rotate the adjusting screw in anti-clockwise direction to increase the clearance while clock wise direction will decrease the clearance.Insert the feeler gauge 0.06mm(for intake valves),with the help of tappet adjusting tool/forceps adjust the adjustment screw so that it touches the feeler gauge.Don't tight it or it will be difficult to remove the feeler gauge back.After this process hold the adjustment screw at the same position and tighten the locknut (make sure the adjusting screw don't rotate).Re-check the clearance,the feeler gauge should go in there with a slight resistance,if not,adjust again!

    INTAKE VALVE:










    EXHAUST VALVE:
    Process is same for the exhaust valve as well.Here you need a 0.08 mm feeler gauge.Generally,there is more clearance left at the exhaust valves as they are exposed to hot burnt gases and work at higher operating temperatures than inlet valves.


    Put back everything in reverse order.

    TIPS:
    1)Set the valve clearance when the engine is cold.
    2)Always use a ring spanner only for opening the valve cover,as an open end spanner might slip and damage them as they are die-cast aluminium.
    3)Ensure that the piston is at TDC compression stroke,setting it at any other stroke will affect the valve timing & damage the engine internals.
    4)Always use a feeler gauge of recommended size for setting the clearance for more precision.
    5)After adjusting valves, always re-measure the clearance and re-adjust if necessary.
    6)Removing spark plug makes it easier to rotate the crank while you adjust the valves.

    NOTE:This procedure is more or less the same for all bikes.
    Last edited by Drifty; 12-21-2011 at 03:34 PM.
    CTCT, srikany, SparKot and 14 others like this.

    D.I.Y-Valve clearance setting RTR180
    D.I.Y-RTR180 brake fluid replacing/brake bleeding
    D.I.Y-RTR180 brake pad replacing/cleaning
    Exploded view of Mikuni BS-29 carb

    A motorcycle functions entirely in accordance with the laws of reason, and a study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself.

  2. #2
    Super Moderator sunilg's Avatar
    Join Date
    Apr 2004
    Location
    ghaziabad
    Posts
    7,993
    Blog Entries
    2
    Mentioned
    167 Post(s)
    Tagged
    0 Thread(s)

    Default

    Pretty Neat.

    DIY approved.
    (Been There Done That) x 3.25

  3. #3
    Addicted vijaymeyou's Avatar
    Join Date
    Jul 2011
    Location
    Chennai Bangalore
    Posts
    197
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    Default

    Hi Drifty,

    very neat explaination. is it same aplicable for fiero?

  4. #4
    Rusted Drifty's Avatar
    Join Date
    Aug 2010
    Location
    Mumbai,Dombivli
    Posts
    710
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by vijaymeyou View Post
    Hi Drifty,

    very neat explaination. is it same aplicable for fiero?
    Thanks.Yes,the procedure is same for your Fiero too.

    D.I.Y-Valve clearance setting RTR180
    D.I.Y-RTR180 brake fluid replacing/brake bleeding
    D.I.Y-RTR180 brake pad replacing/cleaning
    Exploded view of Mikuni BS-29 carb

    A motorcycle functions entirely in accordance with the laws of reason, and a study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself.

  5. #5
    Rusted itssaurabh.negi's Avatar
    Join Date
    Jun 2011
    Location
    Dehradun
    Posts
    685
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default need Help, drifty!!

    Hi drifty, such an excellent explanation. hats off!!!

    well i m having a problem, my ride stalls if not given throttle(doesnt matter hw hot it is). i have tried cleaning my air filter/increased IDLE RPM / fuel tank air intake pipe. Went to a well known mechanic, he told k either Valves or tappets are tight,what according to u might be the reason. MY RPM oscillates from 1-2 K when at idle and finally stalls after 10-15 sec.i m not running lean either. i wish i could do this DIY at home,dont know hw woiuld i get this Feeler gauge nd all.

    Hope to get a valuable advice from ur side..
    regards
    Saurabh
    [SIGPIC][/SIGPIC]
    _______________________________________________
    I Dream, I Dare, I Do !!

    << 100Rabh N3gi!! >>
    My Ride : http://www.xbhp.com/talkies/members/itssaurabh-negi-albums-my-new-sweetheart.html
    My Photography : https://www.facebook.com/seeclickshare

  6. #6
    Rusted Drifty's Avatar
    Join Date
    Aug 2010
    Location
    Mumbai,Dombivli
    Posts
    710
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by itssaurabh.negi View Post
    Hi drifty, such an excellent explanation. hats off!!!

    well i m having a problem, my ride stalls if not given throttle(doesnt matter hw hot it is). i have tried cleaning my air filter/increased IDLE RPM / fuel tank air intake pipe. Went to a well known mechanic, he told k either Valves or tappets are tight,what according to u might be the reason. MY RPM oscillates from 1-2 K when at idle and finally stalls after 10-15 sec.i m not running lean either. i wish i could do this DIY at home,dont know hw woiuld i get this Feeler gauge nd all.

    Hope to get a valuable advice from ur side..
    regards
    Saurabh
    Thanks Saurabh.
    Seems like there is less clearance at the inlet valve.When you rev the engine while accelerating,do you notice a slight lag in between?
    Make sure that the A/F mixture is not lean or either too rich.The speedo needle dancing might be cause of tight tappets.I would recommend you to get the valve clearance adjusted from your trusted expert mechanic.Make sure he is adjusting the clearance with the help of feeler gauge.Which bike do you own?Have you adjusted the tappets before?
    Last edited by Drifty; 12-23-2011 at 07:32 PM.

    D.I.Y-Valve clearance setting RTR180
    D.I.Y-RTR180 brake fluid replacing/brake bleeding
    D.I.Y-RTR180 brake pad replacing/cleaning
    Exploded view of Mikuni BS-29 carb

    A motorcycle functions entirely in accordance with the laws of reason, and a study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself.

  7. #7
    Rusted itssaurabh.negi's Avatar
    Join Date
    Jun 2011
    Location
    Dehradun
    Posts
    685
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by Drifty View Post
    Thanks Saurabh.
    Seems like there is less clearance at the inlet valve.When you rev the engine while accelerating,do you notice a slight lag in between?
    No such lag.

    Make sure that the A/F mixture is not lean or either too rich.The speedo needle dancing might be cause of tight tappets.I would recommend you to get the valve clearance adjusted from your trusted expert mechanic.Make sure he is adjusting the clearance with the help of feeler gauge.Which bike do you own?
    Its cbz-x 2011,
    4200kms on odo

    Have you adjusted the tappets before?
    no i havent adjusted tappets/valves before, planing to do so. SVC guys not doing it . are tappets/valves different parts altogether ?? someone says its exhaust valves tight,but u said its inlet one, m confused
    [SIGPIC][/SIGPIC]
    _______________________________________________
    I Dream, I Dare, I Do !!

    << 100Rabh N3gi!! >>
    My Ride : http://www.xbhp.com/talkies/members/itssaurabh-negi-albums-my-new-sweetheart.html
    My Photography : https://www.facebook.com/seeclickshare

  8. #8
    Rusted 2strokerama's Avatar
    Join Date
    Nov 2010
    Posts
    493
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Very well explained. Thanks for this.

    You mentioned that the procedure is more or less the same for all bikes. Apart from the clearences, where else could there be a difference?

  9. #9
    Rusted Drifty's Avatar
    Join Date
    Aug 2010
    Location
    Mumbai,Dombivli
    Posts
    710
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by itssaurabh.negi View Post
    no i havent adjusted tappets/valves before, planing to do so. SVC guys not doing it . are tappets/valves different parts altogether ?? someone says its exhaust valves tight,but u said its inlet one, m confused
    Yeah,tappets and valves are two different things.Tappet is the screw assembly on the end of the rocker arm that pushes on the exhaust and inlet valves.Dont get confused bro,as I said get the work done from a good mechanic,first check whats the co. recommended valve clearance for your Xtreme.

    Quote Originally Posted by 2strokerama View Post
    Very well explained. Thanks for this.

    You mentioned that the procedure is more or less the same for all bikes. Apart from the clearences, where else could there be a difference?
    Thanks!
    The only difference would be the top of the adjustment screw.Most of the bikes these kind of tappet screw.It requires special tappet adjustment tool for adjustment.




    While some bikes like the Suzuki GS150R have tappet screw of this type.You need just a screw driver to adjust these ones.
    Durai likes this.

    D.I.Y-Valve clearance setting RTR180
    D.I.Y-RTR180 brake fluid replacing/brake bleeding
    D.I.Y-RTR180 brake pad replacing/cleaning
    Exploded view of Mikuni BS-29 carb

    A motorcycle functions entirely in accordance with the laws of reason, and a study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself.

  10. #10
    Addicted
    Join Date
    May 2010
    Location
    ahmedabad
    Posts
    177
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default

    Oh man really cool. i was searching for this for quite a few time.

Page 1 of 3 123 LastLast

Similar Threads

  1. Replies: 19
    Last Post: 05-28-2013, 01:27 PM
  2. How do I know if the Valve in my engine is busted?
    By abdriver2000 in forum General Biking Discussion
    Replies: 16
    Last Post: 11-30-2012, 05:28 PM
  3. Push rods Vs Spring Valve
    By aargee in forum General Biking Discussion
    Replies: 19
    Last Post: 07-03-2011, 02:11 PM
  4. can p150 ug3 be changed to 4 valve
    By pabi in forum Help Me!
    Replies: 4
    Last Post: 05-02-2010, 09:49 AM
  5. Tapet Setting
    By darius_b in forum Help Me!
    Replies: 19
    Last Post: 08-18-2009, 05:42 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •