Whats normal ?? - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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post #1 of 16 Old 05-04-2015, 04:52 PM Thread Starter
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Whats normal ??

Howdy !! I got my first ever KLR running after replacing all the hoses and tires and also doing the Doohickey. Since I've never owned one of these, what does "Normal" engine noises sound like?? It is real quiet when I start it cold, but after 10 or 15 miles it sounds like the balancer chain or cam chain is loose. Other than that it runs great.
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post #2 of 16 Old 05-04-2015, 05:21 PM
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Mine's been doing this for six years so i figure it's nothing to worry about.

I've never heard a definitive answer, so here's my theory:

When the engine's cold and the oil is thicker, they tend to muffle the noise of internal engine components.

As the engine and oil get hotter, they're better conductors of sound, plus the oil is thinner. I'm pretty sure what I'm hearing on mine is the whirring of the cam chain.

I'm not an Acoustical Engineer, but I did stay at a Holiday Inn Express last night.....



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post #3 of 16 Old 05-05-2015, 03:01 AM Thread Starter
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Thanks for the reply, I'll keep an ear on it.
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post #4 of 16 Old 05-05-2015, 10:41 AM
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You must be very tall.


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Thanks for the reply, I'll keep an ear on it.
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post #5 of 16 Old 05-05-2015, 10:57 AM
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Mine usually quiets down after warm up. And Ive been told these engines are noisey anyhow. Its easy to become obessive too,since Ive given up I feel better now.
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post #6 of 16 Old 05-05-2015, 11:38 AM
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Top Ten Reasons Why KLR Riders Don’t Wave Back.

...
2. Has his head cocked intently to the left, trying to figure out if all that racket means the engine is coming apart.
...

Tom

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“On the way downtown I stopped at a bar and had a couple of double Scotches. They didn't do me any good. All they did was make me think of Silver-Wig, and I never saw her again.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte

Sting like a butterfly.
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post #7 of 16 Old 05-05-2015, 12:41 PM
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The engine is designed to run with a coolant temperature of ...pick a number...but at least 225 F so clearances reflecting that are in place. We know at least 225 F because the cooling fan doesn't come on until 210 F at the bottom of the radiator = lots hotter in the head. Few engines see that often and maybe almost none at the lower cylinder area.

The 195 F thermostat and bypass are very helpful in reducing clearances which should help with noise.
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post #8 of 16 Old 05-05-2015, 12:58 PM Thread Starter
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I found a video on you tube that has the exact noise, but I can't post a link to it because I don't have enough posts.
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post #9 of 16 Old 05-05-2015, 01:37 PM
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Post the link, but bodge it up by putting a space in 'www.htt.." like this: "w ww.http..." and I'll fix it for you.

Tom

Tom [email protected]

“On the way downtown I stopped at a bar and had a couple of double Scotches. They didn't do me any good. All they did was make me think of Silver-Wig, and I never saw her again.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
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post #10 of 16 Old 05-05-2015, 01:47 PM Thread Starter
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Last edited by Tom Schmitz; 05-05-2015 at 08:03 PM.
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