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03 RKC- finally quiet.

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Old Oct 1, 2017 | 12:04 PM
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Default 03 RKC- finally quiet.

For anyone reading all the posts I have had on here, one will easily see that I'm constantly tinkering, questioning and looking for ways to quiet my tc-88 down. The motors are noisy but mine was worse than a type writer. I tried all kinds of things, additives, tunes, oils - primary, engine and tranny. I spent a lot in that search and I have finally found some solace in my quest. Recently I put in an auto chain tensioner in the primary. Big big difference in clatter. That of course led me to hear other things that I was finally able to chase down and determine a loose shifter arm that caused that whole assemble to bang and clang and rattle. Finally the ticking in the top end. I'm running 20w60 synthetic for the protection it offers, but for what ever reason I thought about going back to 20w50 dino. NO THIS IS NOT an oil post but I have to give you my experience this weekend. Prior to the oil change and given now the other noises are pretty much gone, I decided to use my iPhone app that had a decibel reader on it. With the engine hot, I held I up and brought the motor up to about 2500 rpm. 97 db. I did that twice. After changing the oil, I went for a 20 mile ride to make sure all was warm. Two new readings were 95 db taken the exact same way. Ambient temperatures were the same outside. Like I said this is NOT an oil post but dino is quieter. Ive proven that.

Prior to any and all of this, I was to the point of trading in my 88 for a cvo. I was riding without a windshield because of that clatter. Was it horrible? No but it bugged the $hit our of me. I want to thank everyone on this forum who at times told me and others to make sure things were tight and not banging and clanging around. Makes a difference. BIG difference. I'm happy now.

randy
 
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Old Oct 1, 2017 | 12:37 PM
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Originally Posted by cajun1957a
.... I'm running 20w60 synthetic for the protection it offers, but for what ever reason I thought about going back to 20w50 dino. NO THIS IS NOT an oil post but I have to give you my experience this weekend. Prior to the oil change and given now the other noises are pretty much gone, I decided to use my iPhone app that had a decibel reader on it. With the engine hot, I held I up and brought the motor up to about 2500 rpm. 97 db. I did that twice. After changing the oil, I went for a 20 mile ride to make sure all was warm. Two new readings were 95 db taken the exact same way. Ambient temperatures were the same outside. Like I said this is NOT an oil post but dino is quieter. Ive proven that.


I've preached the same message for a long time here. When it comes to noise, syn oil is not your friend. My personal favorite is Spectro 25-60 dino oil.

Glad to hear you solved your noise problems.

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Old Oct 1, 2017 | 12:51 PM
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beehive springs made a big difference for the top end noise in my 99

I hate those damn rattling heel shifters too. Once you tighten them back up, they get quieter, then slowly start getting noisier again until they drive you nuts. I haven't had that issue yet on my 2012, but i'm sure it will be coming.
 

Last edited by cike; Oct 1, 2017 at 12:54 PM.
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Old Oct 1, 2017 | 01:04 PM
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Still going to put Rockouts in this winter but for now its a whole lot quieter. For now. Where can I get spectro 25-60 up here in Canada? Ill put that in, in the spring when its starts to warm up.

randy
 
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Old Oct 1, 2017 | 01:47 PM
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Originally Posted by cajun1957a
Still going to put Rockouts in this winter but for now its a whole lot quieter. For now. Where can I get spectro 25-60 up here in Canada? Ill put that in, in the spring when its starts to warm up.

randy

Looks like these are your choices for Canadian distributors.

http://spectro-oils.com/dealer-locator/canada-dealers/


Use at your own risk - too heavy for Canadian temps IMO. Takes too long to start flowing, especially being a non-synthetic.

But you said this wasn't an oil thread, so I'd better bug out now LOL.
 
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Old Oct 1, 2017 | 02:03 PM
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Of course a synthetic is always louder than a Dino. Why? because the manufacturer of the Synthetic oil has designed the oil to protect better at a lighter weight. In other words, while both oils are rated 20w-50, there is actually a large viscosity area for a fluid to be considered a 20W. Syn usually stays at the low end, just thick enough to make it into that 20W area. The Dino, on the thicker end, as its base oil has to be thicker to provide the same amount of available protection. Thicker oil =quieter engine. Thinner oil= louder engine. It is the oil itself acting as its own sound deadening that you are experiencing. The thinner synthetic oils also account for the "improved MPG and HP" due to less viscous drag.
You and i are a lot alike on the noise. I have tried every trick known to man to get rid of every tick, tock, and tank that comes from these engines. i can't even stand the "clank" into first gear because my head sees parts getting slammed together than should be smooth as silk quiet! It is a quest, that will never end.
 

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Old Oct 1, 2017 | 06:47 PM
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Originally Posted by cajun1957a
Still going to put Rockouts in this winter but for now its a whole lot quieter. For now. Where can I get spectro 25-60 up here in Canada? Ill put that in, in the spring when its starts to warm up.

randy
I order mine from Rocky Mountain ATV, if I get enough for a couple of oil changes the shipping is free. I have no idea about Canada tho.

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Old Oct 2, 2017 | 12:03 AM
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I find it odd that people would rather have the *generally* inferior protection of dino oil for a more quiet top end at the expense of noise and better protection.

That being said, I use both dino and syn.
 
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Old Oct 2, 2017 | 06:28 AM
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Originally Posted by rhuff
That being said, I use both dino and syn.
Huh? Mixed in the same hole? In different holes? Swap back and forth between the 2 at each oil change?
 
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Old Oct 2, 2017 | 07:26 AM
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Rhuff, that being said, your riding a Harley, by definition they are inferior to many European and Asian bikes, so you cant use that, so why would you ride a "generally" inferior bike? I tried the synthetic and am going back to dino. I'm sure the sky will fall now all because of me.

randy
 
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