Weird whistle from Air Cleaner after stage 3

[Timber0472]

Hey all. Just did a 117 big bore kit with cams to my 2018 RGS. Runs awesome but has some sorta strange whistle coming from the ness m8 big sucker I installed. Any one else had this? Sounds just like old hot rod 4 barrel whistle/chirp. No biggie but if someone knows a way to get rid of it that would be great. Sort of annoying. It's not the classic clucking from cams and reversion either. Just a chirping or whiny whistle when accelerating. Hear it a little at idle to but mostly when throttling.

[Hossamania]

Does it have a cover of some sort? Remove it and see if that changes anything. If not, try removing and remounting the whole assembly. Try running without the air cleaner (short time) to see if it changes. Try taping off gradually larger sections of the cleaner to see if it changes.
Make sure it's the air intake making the noise and not something else that is fooling you.

[Timber0472]

Does it have a cover of some sort? Remove it and see if that changes anything. If not, try removing and remounting the whole assembly. Try running without the air cleaner (short time) to see if it changes. Try taping off gradually larger sections of the cleaner to see if it changes.
Make sure it's the air intake making the noise and not somethibyng else that is fooling you.

It has the stock m8 cover. I will do that. I can't imagine what else it could be.  No oil around the heads and I have searched for an intake leak with carb cleaner and a torch.  Nothing changed.

[Hossamania]

Could it be a heat shield on the exhaust or a footboard chirping? Sound travels, it may be something that is loose and is making noise.

[Timber0472]

Could it be a heat shield on the exhaust or a footboard chirping? Sound travels, it may be something that is loose and is making noise.

yep, checked that too... even loosened them then buttoned them back up.

[Pete_Vit]

Does it have a cover of some sort? Remove it and see if that changes anything. If not, try removing and remounting the whole assembly. Try running without the air cleaner (short time) to see if it changes. Try taping off gradually larger sections of the cleaner to see if it changes.
Make sure it's the air intake making the noise and not something else that is fooling you.

Not sure about the M8's but there's 'usually' a hard gasket/seal that goes between the carb, or in your case the throttle body and the air cleaner, check its not missing or attached correctly 

[Timber0472]

Does it have a cover of some sort? Remove it and see if that changes anything. If not, try removing and remounting the whole assembly. Try running without the air cleaner (short time) to see if it changes. Try taping off gradually larger sections of the cleaner to see if it changes.


Make sure it's the air intake making the noise and not something else that is fooling you.

Not sure about the M8's but there's 'usually' a hard gasket/seal that goes between the carb, or in your case the throttle body and the air cleaner, check its not missing or attached correctly 

Hmm. yea it has that cheap card board type 3 hole gasket. Maybe I should use some RTV on that?? or just replace it. Could that be it?

[Pete_Vit]

Does it have a cover of some sort? Remove it and see if that changes anything. If not, try removing and remounting the whole assembly. Try running without the air cleaner (short time) to see if it changes. Try taping off gradually larger sections of the cleaner to see if it changes.


Make sure it's the air intake making the noise and not something else that is fooling you.

Not sure about the M8's but there's 'usually' a hard gasket/seal that goes between the carb, or in your case the throttle body and the air cleaner, check its not missing or attached correctly 

Hmm. yea it has that cheap card board type 3 hole gasket. Maybe I should use some RTV on that?? or just replace it. Could that be it?

I'm not sure you need to go that route, but checking fix, clean surfaces, and replace, RTV will ensure a good seal if you find that's the issue

[Timber0472]

 here is a video of it doing it. 55 degrees cold start.
https://youtu.be/g67InldoqJ0

[Timber0472]

This is a better video. Still cold start.
https://youtu.be/ph5djkHbro4

[1FSTRK]

This is a better video. Still cold start.
https://youtu.be/ph5djkHbro4

Did your 117 kit include up grading to a gear drive cam?

[Timber0472]

This is a better video. Still cold start.
https://youtu.be/ph5djkHbro4

Did your 117 kit include up grading to a gear drive cam?

No it was just the cam and inner bearing.

[Pete_Vit]

That almost sounds like cam chain or gears 
does it quite down after warm ?

[Timber0472]

That almost sounds like cam chain or gears 
does it quite down after warm ?

Yes it does quiet down but still there.

[Timber0472]

That almost sounds like cam chain or gears 
does it quite down after warm ?

This is a video I found on my phone of the bike stock engine with pipes and air cleaner. Still has the noise but not as loud. It sounds like a cheap super charger.
https://youtu.be/fSRi-lBKFhc

[Pete_Vit]

my limited experience I'd say there's nothing to worry about, I've heard that same sound from Evo's and Twinkies right after a top end rebuild.
hopefully someone with more knowledge will chime in and tell me I'm FOS or 100% correct. 

[Timber0472]

my limited experience I'd say there's nothing to worry about, I've heard that same sound from Evo's and Twinkies right after a top end rebuild.
hopefully someone with more knowledge will chime in and tell me I'm FOS or 100% correct. 

lol...Let's hope you are right..on the nothing to worry about part. Thanks for the reply.

[Timber0472]

Is it possible that the new inner bearing I put in is bad? Someone said it sounds like that could be the problem because it gets louder and faster with revving. Any thoughts?

[Timber0472]

Found the whistle...now for the Gear Whine. 

https://youtu.be/VyC75GDpTC8

[Pete_Vit]

Is it possible that the new inner bearing I put in is bad? Someone said it sounds like that could be the problem because it gets louder and faster with revving. Any thoughts?

Timken ?  I guess it's possible, but again my limited experience, I'd say not likely  especially if it was a Timken

[Pete_Vit]

Found the whistle...now for the Gear Whine. 

https://youtu.be/VyC75GDpTC8

ok