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Valve timing (Read 209 times)
sparktfxr
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Valve timing
11/09/17 at 17:25:14
 
Hi, purchased a 2014 S40 last year which I would like to develop over the next few years..great fun to ride!..&  so much information on this forum but can't seem to find the valve timing specs either here  in the manual or on the net.. just wondering if you guys can help..Greatfully sparktfxr
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Re: Valve timing
Reply #1 - 11/09/17 at 19:18:14
 
Valve timing ? What do you want cam info or how to adjust your vales or valve lash ? How to time your cam ? Be specific !
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Re: Valve timing
Reply #2 - 11/09/17 at 19:33:14
 
You probably mean ,valve clearances ,which are the only adjustment you normally can make on the bike, the valve clearances for intake and exhaust valves is .08 to .13mm=.003 to.005 inches .setting the gap to large will make them noisy(but not hurt anything) ,but setting the gap to small will not allow them to close and they could be damaged ( burnt , warped ,or the head of the valve drop of and bounce around the cylinder-all bad).The Clymer's manual tells you to rotate the motor clockwise when bring it to TDC and that is incorrect ,turn the motor the same as the wheels turn ,counter clockwise.(you'll be on the left side of the bike)
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Re: Valve timing
Reply #3 - 11/09/17 at 22:02:30
 
check out the tech section index, link below.
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Re: Valve timing
Reply #4 - 11/10/17 at 07:36:28
 
The genuine Suzuki manual has a valve timing diagram in it.
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2014 S40. Raptor. idle mixture adj.Needle raised one notch. 4000' altitude. Stock jets. Shell Rotella synthetic.
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sparktfxr
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Re: Valve timing
Reply #5 - 11/10/17 at 13:13:04
 
Thanks for the response but I am after the inlet & exhaust valve opening & closing times in degrees, this is quite often displayed as a circular graph in manuals ..mine is a clymer & doesn't have it
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Re: Valve timing
Reply #6 - 11/10/17 at 13:21:29
 
sparktfxr wrote on 11/10/17 at 13:13:04:
Thanks for the response but I am after the inlet & exhaust valve opening & closing times in degrees, this is quite often displayed as a circular graph in manuals ..mine is a clymer & doesn't have it


http://suzukisavage.com/cgi-bin/YaBB.pl?num=1338603955/0#0

This is all I've ever seen.  Are you having one reground?
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verslagen1
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Re: Valve timing
Reply #7 - 11/10/17 at 17:44:37
 
here you go...

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valve_timing.jpg
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norm92de
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Re: Valve timing
Reply #8 - 11/10/17 at 18:18:40
 
Good old Versy! Grin
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2014 S40. Raptor. idle mixture adj.Needle raised one notch. 4000' altitude. Stock jets. Shell Rotella synthetic.
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Re: Valve timing
Reply #9 - 11/10/17 at 19:40:30
 
Yup a wealth knowledge & experience !
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Re: Valve timing
Reply #10 - 11/10/17 at 20:54:27
 
Fortunately for us, Dave and Verslagen and a couple of others here still have fertile minds, unlike a lot of us who suffer from Old Timers disease.   Huh Roll Eyes Undecided Cheesy
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Re: Valve timing
Reply #11 - 11/10/17 at 21:44:37
 
batman wrote on 11/09/17 at 19:33:14:
The Clymer's manual tells you to rotate the motor clockwise when bring it to TDC and that is incorrect


I'm reminded of a story of the Bletchley Park enigma machine code breakers, one of them, I can't remember who would ask others 'what direction do the hands of a clock rotate. The answer is 'anti clockwise', this is correct because it's from the point of view of the clock.
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norm92de
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Re: Valve timing
Reply #12 - 11/11/17 at 10:56:05
 
I have always been in awe of those people at Bletchley Park. What minds!
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2014 S40. Raptor. idle mixture adj.Needle raised one notch. 4000' altitude. Stock jets. Shell Rotella synthetic.
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sparktfxr
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Re: Valve timing
Reply #13 - 11/13/17 at 15:28:05
 
Thanks Verslagen1, thats what I was after..a friend of mine says with that information & some other givens he can work out the best size & length of  an exhaust system to work within a particular rev range..so Im interested.     Thanks again..Cheers
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Re: Valve timing
Reply #14 - 11/13/17 at 21:00:56
 
Your friend may find a few guide lines handy, a  header pipe larger than 1 1/2 " is too big and even one that size is only used on motors with increased displacement and after market cam (not stock) header length for a 650 cc bike should fall between 30"to 34" (stock is 32") longer favors lower RPM ,  shorter favors higher .If his design doesn't fall between these guide lines your bike  may run worse, if the header pipe is to large ,speed/and temperture of the exhaust gas slows killing any chance of making hp, and you need a muffler to create back pressure.Our header is double layered which keeps the gases from cooling( slowing down) a single layer pipe would need to be made shorter.The exhaust passage in our head is of bad design ,not like most other bikes, I hope your friend knows his stuff. Many on this sight with stock motors have found that using a H-D Dyna muffler ,carb needle mod/rejet,and less restrictive air filter ,to be the route to a smoother and better running motor( 1-2 more hp) for less than $100 .
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« Last Edit: 11/14/17 at 09:43:02 by batman »  

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