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Valve adjustment?

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Old 03-13-2007, 06:12 PM
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Valve adjustment?

Once my bike it warmed up, at Idle there is a tick tick tick tick, but only at Idle, I seen where someone said their SH has 50,000miles on it and hasnt need a valve adjustment. My niose seems to be comming from the front valve cover, it just faint enough to hear. I read some of the other post and it sounds like everyone is saying CCT (is this a chain tensioner) Also is there a Do It Yourself Thread for adjusting the valves, My SH has almost 14k on it
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Old 03-13-2007, 06:19 PM
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Use a real mechanic's stethiscope to find where the sound is coming from. The shadetree mechanic's stethiscope is a screwdriver to the ear (handle, not the pointy end )

Make sure you know what the problem is before attacking it.
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Old 03-13-2007, 06:20 PM
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Check for an exhaust leak first. Check the torque on the flange nuts for the front header. If the bike is new to you and the flange nuts are loose you might want to replace the crush washers between the block and the pipe. They're cheap. If tightening the nuts does not work, I would pull the crush washer and check it for cracks or breaks that are leaking. If you find nothing then I would go for the valves. Your mileage is not high enough for the valve-train to be in question if your bike has had normal use and care.
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Old 03-13-2007, 06:38 PM
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Are they bad for the crush washers to leak? And I will take it down to my buddies shop tommorrow if its nice, he has a Electronic ear
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Old 03-13-2007, 06:41 PM
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If they're leaking they will eventually burn through. Takes a while but not a good thing.
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Old 03-13-2007, 10:24 PM
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when the bike is warm the carbs on these bikes make a clacking sound from the large slides but do listen with a stethiscope to be sure where the sound is coming from!
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Old 03-14-2007, 02:25 PM
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The slides only make that sound at part throttle, not at idle.
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Old 03-28-2007, 03:13 PM
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Ok, I am about to adjust the valves on the SH, the ticking is comming from the front valve cover, what do I line up to make TDC? whats the clearance susposed to be?
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Old 03-28-2007, 03:53 PM
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You really should get a shop manual for the bike, it will be very helpful. I think I saw one on ebay now in fact and you can almost always get the cd version very cheap though not as convenient. But here is an outline.

clearances (cold engine)
Intake: 0.16 +/- 0.03mm
exhaust: 0.31 +/- 0.03mm

Open crankshaft hole (left engine) and timing cap (left engine). Rotate always counterclockwise. Line up FT mark on crank with index mark on left crank cover. Verify that the FI and FE marks on the front cylinder sprockets are line up with cylinder facing outward (both intake and exhaust). If lining up inward just rotate crank another 360 (always counterclockwise) and line up the FT mark. Check and note clearances.

Now rotate 270 degrees the crank and the rear cylinder should similarly line up the sprocket marks and check those.

NOTES: IF they are out of adjustment you have to remove the cams to adjust and that you really shoould get the manual for. With any luck you can move shims around to cover the gaps - honda charges a fortune per shim I think. Do not remove or unwind the cam chain tensioners are the cam chain cover on the head for this.

bill
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Old 03-28-2007, 06:06 PM
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Download the manual HERE
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Old 03-28-2007, 06:55 PM
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now that is cool, and handy
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Old 03-28-2007, 07:50 PM
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Ok I noticed that you and the manual say turn 270 deg.... In my head I thinking WTF?
why not 360... If its a 4 cycle and 2 cylenders, the crank makes 2 revolutions for every full cycle meaning that the cams make one revolution, so 360 for each valve adjustment

But maybe I am just V-twin ignort along with my spelling disability... are all the V-twins this way
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Old 03-28-2007, 08:03 PM
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I know. it makes my head hurt thinking about it. But the crank configuration and TDC of each piston and timing can be oriented any way the designers choose, not confined by cylinder number or engine design (like all those big bang, etc engine firing orders they talk about for GP). Remember too that in the V engine, the intakes sides both face the inside of the engine: so each cylinder/head is rotated 180 degrees relative to a inline engine. And when the crank is rotating counterclockwise then the front cylinder cam chain is traveling from intake to exhaust on the top, but on the rear head its exhaust to intake on top. So its just not a real obvious 1:1 relationship. There is probably a much simpler way of explaining it, or just stare at it when you have both valve covers off and the timing marks there and rotate the engine, that helps a lot.
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Old 03-28-2007, 08:13 PM
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Maybe I am just imagining it all wrong,
This is how I am thinking each cyclender when at its own TDC and its firing stroke the cam lobs / \ meaning the intake just closed and the exhaust its about to open, and for the v-twin the run smoth instead of a missing 3 cylender both pistons would come up at the same time, one on fireing stoke, still suggesting 360
but evidently I am way off
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Old 03-28-2007, 08:19 PM
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#1 fires 270 degrees later #2 fires (360 - 90 degrees)
540 degrees later #1 fires (360 + 90 degrees)
rods share a common crankpin
I would draw pictures but I'm barely computer literate
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Old 03-28-2007, 08:39 PM
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360 plus 90 is 450 ......... so they are 180 of each other 450-270=180
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Old 03-28-2007, 08:42 PM
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why the hell did the put the timing marks 270 deg instead of 0? its like a V-8 with just the 3# and 6# cylenders
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Old 03-28-2007, 09:00 PM
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Valves tightens and get quieter as they go. The tick is probably an exhaust or vacuum leak. On these bikes its usually a vacuum leak due to unseated carbs.
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Old 03-29-2007, 04:26 AM
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Originally Posted by Birdoprey
#1 fires 270 degrees later #2 fires (360 - 90 degrees)
540 degrees later #1 fires (360 + 90 degrees)
rods share a common crankpin
I would draw pictures but I'm barely computer literate
Now that is the best, simplest explanation. since the cylinders are 90 degrees apart, you only have to migrate 270 around the crank circle to reach the TDC of the rear cylinder.
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Old 03-29-2007, 08:53 AM
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But 360 + 90 is NOT 540 .... its 450

which does put them 180 from each other (450-270=180)

which makes since to me
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Old 07-24-2010, 09:50 PM
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Originally Posted by cliby
You really should get a shop manual for the bike, it will be very helpful. I think I saw one on ebay now in fact and you can almost always get the cd version very cheap though not as convenient. But here is an outline.

clearances (cold engine)
Intake: 0.16 +/- 0.03mm
exhaust: 0.31 +/- 0.03mm

Open crankshaft hole (left engine) and timing cap (left engine). Rotate always counterclockwise. Line up FT mark on crank with index mark on left crank cover. Verify that the FI and FE marks on the front cylinder sprockets are line up with cylinder facing outward (both intake and exhaust). If lining up inward just rotate crank another 360 (always counterclockwise) and line up the FT mark. Check and note clearances.

Now rotate 270 degrees the crank and the rear cylinder should similarly line up the sprocket marks and check those.

NOTES: IF they are out of adjustment you have to remove the cams to adjust and that you really shoould get the manual for. With any luck you can move shims around to cover the gaps - honda charges a fortune per shim I think. Do not remove or unwind the cam chain tensioners are the cam chain cover on the head for this.

bill

are we talking about the superhawk still because I belive those specs are a tad off
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Old 07-24-2010, 10:04 PM
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Originally Posted by MisfitToy
are we talking about the superhawk still because I belive those specs are a tad off
Those specs are dead on..... and they are in mm which maybe the reason they might look strange....

For the metric impaired you can also use IN:0.006" +\- 0.001"
EX:0.012"+\- 0.001"
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Old 07-24-2010, 10:16 PM
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ah ha... thanks for that mabey its time for feeler gauges with some inches on it hu? so specs are ......

metric
Intake: 0.16 +/- 0.03mm
exhaust: 0.31 +/- 0.03mm

or

standard
IN:0.006" +\- 0.001"
EX:0.012"+\- 0.001"
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Old 07-24-2010, 10:17 PM
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Originally Posted by MisfitToy
ah ha... thanks for that mabey its time for feeler gauges with some inches on it hu? so specs are ......

metric
Intake: 0.16 +/- 0.03mm
exhaust: 0.31 +/- 0.03mm

or

standard
IN:0.006" +\- 0.001"
EX:0.012"+\- 0.001"
That is correct
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