SuzukiSavage.com - Post Valve Adjust Question

Kent

Ex Member

Post Valve Adjust Question
04/20/06 at 19:20:50

Recently did a valve adjustment. Afterward I heard more tapping than before, but have always heard "a tappy valve is a happy valve." However, even for a thumper, the bike used to have a throatier, manly, sound. Now, it's very much more treble. Is that to be expected? Will the sound deepen as the valves tighten up? Or is the change in sound totally unrelated?

And ideas?

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Reelthing

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Re: Post Valve Adjust Question
Reply #1 - 04/20/06 at 19:56:41

Kent wrote on 12/31/69 at 16:00:04:

Recently did a valve adjustment. Afterward I heard more tapping than before, but have always heard "a tappy valve is a happy valve." However, even for a thumper, the bike used to have a throatier, manly, sound. Now, it's very much more treble. Is that to be expected? Will the sound deepen as the valves tighten up? Or is the change in sound totally unrelated?

And ideas?

Not really - correct set valves make a little tap'n but not very much.

are you real sure you got the clearence correct?

what do you mean by "as the valves tighten up" - on this engine they get looser not tighter over time like a shim'd valve.

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Savage_Rob Serious Thumper Alliance Member Offline Mechanically Inclined Amateur Posts: 6972 Texas (Dallas area) Gender:	Re: Post Valve Adjust Question Reply #2 - 04/20/06 at 21:08:41 Also that it was at TDCC.
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Kent

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Re: Post Valve Adjust Question
Reply #3 - 04/20/06 at 22:50:20

1. I'm very sure the adjustment is correct.
2. On my inline 4 cylinder, the tappets tighten over time, I wasn't aware this engine was different. Dangit!
3. I'm wondering, I just added a windshield. Maybe that is routing the noise upward instead of dispersing it like before. Maybe it's all my imagination.

All I know is when I was testing it, my wife said "why does my bike sound like a girl?"

Argh! But at least the oil leak is gone.

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Kropatchek

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Re: Post Valve Adjust Question
Reply #4 - 04/21/06 at 01:58:28

Kent wrote on 12/31/69 at 16:00:04:

3. I'm wondering, I just added a windshield. Maybe that is routing the noise upward instead of dispersing it like before. Maybe it's all my imagination.

.

The motor makes a different sound with windshield on and off , my experience.

And as general remark: was the engine at TDC in the compression stroke?

I use a feelergauge 0.005" for in- and exhaust, works for me.

Greetz
Kropatchek Grin

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Never ask your bike to scream before her throat is warm.
'93 Sav in '96 ( yellow) looks

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Kent Ex Member	Re: Post Valve Adjust Question Reply #5 - 04/21/06 at 17:22:43 It was either at TDC or BDC, LOL!!! I'm sure I had it right. It runs fine, just sounds funny.
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red2k1 Ex Member	Re: Post Valve Adjust Question Reply #6 - 04/21/06 at 19:22:07 Just adjusted the valves on my '02 and the exhaust note is definitely higher.
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babbalou Serious Thumper Offline Posts: 814 Lewisville, Texas Gender:	Re: Post Valve Adjust Question Reply #7 - 04/21/06 at 19:22:19 My S40 sounded a little different with the windshield on too. Might be that.
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Savage_Rob

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Re: Post Valve Adjust Question
Reply #8 - 04/23/06 at 00:32:35

The only reason I mentioned TDCC (not TDC) is that the first time I adjusted mine, I had think I had it at TDC but not on the compression stroke as the existing gaps didn't seem right. Fortunately it was pointed out to me that it must be TDCC and I readjusted before running it. The only reason I hadn't run it by then was that I'd done the plug fix and snapped off a bolt and hadn't received its replacement yet. Anyway, as long as you're sure it was on the compression stroke, cool. I just thought I'd mention it.

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Kent Ex Member	Re: Post Valve Adjust Question Reply #9 - 04/23/06 at 17:39:45 I used the manual and lined up the mark as it showed. Should that be enough to get it TDCC?
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diesel Full Member 2004 No Login Offline Posts: 181 Watsontown, PA	Re: Post Valve Adjust Question Reply #10 - 04/23/06 at 21:47:42 NO
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Kropatchek Serious Thumper Offline Why more than 1 cylinder? Posts: 1457 Alphen a/d Rijn Netherlands Gender:	Re: Post Valve Adjust Question Reply #11 - 04/24/06 at 03:35:44 diesel wrote on 12/31/69 at 16:00:04: NO That's not enough. Check the rockers have play ( meaning both inlet- and exhaust valves are closed). Greetz Kropatchek
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Savage_Rob

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Re: Post Valve Adjust Question
Reply #12 - 04/24/06 at 06:44:20

Kropatchek wrote on 12/31/69 at 16:00:04:

Check the rockers have play ( meaning both inlet- and exhaust valves are closed).

Absolutely.

I also liked the idea of using a piece of wooden dowel inserted into the sparkplug hole to help you see when the cylinder is rising and then aligning the timing mark in concert with that. I haven't done it yet but I plan to then next time I adjust the valves.

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