SuzukiSavage.com - Strange whislte (fixed)

Mambo

Ex Member

Strange whislte (fixed)
09/07/05 at 05:11:23

Hello
I've got some strange whistle coming from the engine when the bike is moving.
The sound is louder if I accelerate and nearly disappear when I slow down.
Anybody knows what it can be (and how to fix it)?
(this is a stock 1993 LS650P with 26.000km (16.000 miles))

If you wish I can try to record the sound and post it.

And I've got another question : does anybody here ever experienced the RAASK Dragpipe (6") exhaust line?
Will it improve power?
Is the sound louder?

Ho, another question (last one). I'll change the oil (and the filter) soon. What's the best oil for this bike? Synthetic? Semi synthetic? Non synthetic?

PS : please excuse my poor english, this isn't my mother tongue Roll Eyes

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torque Serious Thumper 2005 No Login Offline 2008 nightster,flat od green and black Posts: 748 rock hill,S.C. Gender:	Re: Strange whislte Reply #1 - 09/07/05 at 06:21:08 the whistle sounds like its the belt.the belt will "whine" if its too tight, just loosen it up a notch.as for oil i use 10w-40 non synthetic.i dont have a raask so i cant help there.
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Mambo Ex Member	Re: Strange whislte Reply #2 - 09/07/05 at 06:27:32 I'll check the belt.
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Intruder Guy

Guest

Re: Strange whislte
Reply #3 - 09/07/05 at 08:08:37

Oil tends to be a hotly debated topic for motorcycles.
The main thing is to stay away from car oils with
friction modifiers. They are not good for motorcycles
with wet clutches and wet sump lubrication.
You can buy the motocycle specific oils but they are
expensive.

I use Shell Rotella T. It is very good for bikes.
Heres and article about it
http://motorcycleinfo.calsci.com/Consumables.html

There is a forum that is specifically about rotella for bikes
http://www.rotella.com/ubbthreads/postlist.php?Cat=&Board=Motorcycle

Rotella is actually an oil that is made for deisel engines
but it doesn't have any additives or friction modifiers.
The best thing is that it is about $8 for a 4 gallon jug of it
at walmart.

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Mambo Ex Member	Re: Strange whislte Reply #4 - 09/07/05 at 10:22:10 OK, I've made some tests and... the sound isn't coming from the belt I think (but I can be wrong) it should coming from the valves or something in the "upper engine" (sorry, I don't know how to translate "Haut moteur" in english) Maybe changing the oil is the answer, but I doubt of it (the sound is really loud).
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torque Serious Thumper 2005 No Login Offline 2008 nightster,flat od green and black Posts: 748 rock hill,S.C. Gender:	Re: Strange whislte Reply #5 - 09/07/05 at 10:26:49 the valves will make a slapping or clicking sound not a whistle.
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shawn_b Ex Member	Re: Strange whislte Reply #6 - 09/07/05 at 10:31:32 i use 10/40 car oil castrol gtx the clutch dose not slip and its a hell of lot cheaper then shell or motorcycle oil thats what i use i even went to the dlear they use car oil shawn
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Reelthing Serious Thumper Alliance Member Offline Fish or ride that is the question Posts: 5397 Houston,Tx Gender:	Re: Strange whislte Reply #7 - 09/07/05 at 14:36:41 Mambo wrote on 12/31/69 at 16:00:09: (the sound is really loud) It does not do this if you just speed up the engine in nuetral? How about in gear clutch disengaged? I was thinking the cam chain follower or guide - but it seems unlikely it would only do this when you are moving perhaps the speedometer cable?
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Mambo Ex Member	Re: Strange whislte Reply #8 - 09/07/05 at 20:15:28 No noticable sound in neutral (bike not moving) The sound disapear if I disengage the clucth (even if riding at "fast" speed). The sound seems to follow the engine rpm. I'll try to record it to show you, but imagine you are riding your savage oil dry and the valves are squeaking and you'll have a good idea of what the sound's like.
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Reelthing

Serious Thumper
Alliance Member

Offline

Fish or ride that is
the question

Posts: 5397
Houston,Tx
Gender: male

Re: Strange whislte
Reply #9 - 09/08/05 at 05:36:18

Sorry, it may be the word whistle that does not cause us to think anything serious is wrong – however the sound the engine would make with out any oil in it as the valves and bearing surfaces ran dry would indeed be
a serious sound! I've heard that one before with a broken oil pump drive on a V8.

Let me understand this – when you are going fast, pull in the clutch and maintain the same engine RPM the sound stops?

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Mambo

Ex Member

Re: Strange whislte
Reply #10 - 09/08/05 at 09:37:34

Reelthing wrote on 12/31/69 at 16:00:09:

Let me understand this – when you are going fast, pull in the clutch and maintain the same engine RPM the sound stops?

Definitely.
The sound is audible when cruising, is louder when accelerating, and nearly disappear when slowing down.
In neutral there is no noticable sound (even at high rpm).

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vroom1776 Serious Thumper Offline Posts: 2110 Gender:	Re: Strange whislte Reply #11 - 09/08/05 at 14:15:44 Could this be the air intake? I've got a KN fitted directly to the carb, and it whistles, but not too loud... Definitely changes with rpm and acceleration...
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Mambo Ex Member	Re: Strange whislte Reply #12 - 09/09/05 at 00:34:12 I'll change the air filter... and tell you if it change something. PS: is it a good idea to install a K&N replacement air filter instead of a Suzuki one?
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klx650sm2002 Serious Thumper Offline The more I learn the less I know. Posts: 2041 Cumbria,England Gender:	Re: Strange whislte Reply #13 - 09/09/05 at 02:16:01 I had special straight cut primary gears on my 350 LC and they used to whistle / whine under load. Does the Savage have straight cut primaries ? Just a thought. Clive W
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Mambo

Ex Member

Re: Strange whislte
Reply #14 - 09/09/05 at 04:30:12

klx650sm2002 wrote on 12/31/69 at 16:00:09:

Does the Savage have straight cut primaries ?

Errrrr... sorry, what's a "straight cut primaries" ?
The bike is still stock (I'll do many changes* soon, but still stock)

*Keihin FCR41 carb, RAASK 6" Drag Pipes, Yamaha Dragstar 125 seats (driver and passenger), new color, chromes, maybe HH forward controls...

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