Airbox Induction Roar has become a Shriek

[riffer]

Hey all.

Since putting my bike back together I have noticed that the induction roar it used to have has become more of a shriek than a roar.

I'm picking that there's some air getting in somewhere and will take the tank off this weekend to have another look at it as I couldn't find it last time.

What's the most likely culprit? The air filter area, or the rubber boots that fit onto the carbs?

[Motu]

Have you seen your cat lately? could be someone wants to get out?

[riffer]

Have you seen your cat lately? could be someone wants to get out?
Yes, that was my first thought. ;)

But seriously, can I use an RTV-like substance to seal the rubbers on to the carbs?

Is completely sealing the airbox a good idea? I'm wondering if my off has resulted in a small crack in the airbox...

[vifferman]

But seriously, can I use an RTV-like substance to seal the rubbers on to the carbs?

Is completely sealing the airbox a good idea? I'm wondering if my off has resulted in a small crack in the airbox...The whole system's designed to fit together nicely, so you shouldn't need to use sealants. Having said that, there are some parts that are stuck together that way anyway, like rubber flanges in the airbox, the 'snorkel', etc. But using RTV on the carb boots isn't a good idea in case a bit of RTV comes adrift and gets sucked up. Most (all?) of the glued/siliconed bits are generally upstream of the filter, so no problems there.
If there's a crack in the airbox, you should be able to weld or glue that.

Anyway, it's all academic until you do some exploratory surgery, but more'n likely it's just some boot/flange/doodackey that's come slightly adrift.

[James Deuce]

Or alternatively you've reassembled it correctly and that is how it is supposed to sound.

[Hitcher]

Describe this shriek for us...

[riffer]

Describe this shriek for us...
Before my accident, the bike used to sound like rrrrrroooooaaar.


Now it's like rooooooaaaaaaeeeeek!!!!

You are taking the piss aren't you. :shifty:

[Hitcher]

You are taking the piss aren't you. :shifty:
I thought that what the fault sounded like may be a useful diagnostic technique -- particularly for those with a practiced ear...

[jrandom]

Before my accident, the bike used to sound like rrrrrroooooaaar.


Now it's like rooooooaaaaaaeeeeek!!!!

The answer's obvious. You're scaring it.

[riffer]

I thought that what the fault sounded like may be a useful diagnostic technique -- particularly for those with a practiced ear...
Okay then, I'll continue.

Said problem is occuring between 3500 and 5000 rpm, about when the bike starts to pick up its power and head towards something approximating decent acceleration.

Could be related...

Then again, could be you just don't notice the noise at 9,000+ cause there's other things causing noise. :)

[wkid_one]

Before my accident, the bike used to sound like rrrrrroooooaaar.


Now it's like rooooooaaaaaaeeeeek!!!!

You are taking the piss aren't you. :shifty:
Can you record it and post it up on here? And I mean your version - not the one the bike makes - I need some entertainment today

NOW I AM TAKING THE PISS

[riffer]

The answer's obvious. You're scaring it.
I present the following webpage as evidence the mighty fizzer is scared on nothing. Mr Mike Doohan at Bathurst on a 1987 FZR750RT:

http://www.mcnews.com.au/Features/2004/bathurst_1988/doohan.htm

[riffer]

Can you record it and post it up on here? And I mean your version - not the one the bike makes - I need some entertainment today

NOW I AM TAKING THE PISS
Exactly when are you going back to work, wkid?

[wkid_one]

hopefully AFTER you have posted your verbal impression of the induction noise.

[riffer]

hopefully AFTER you have posted your verbal impression of the induction noise.
Bugger. No microphone on the work PC :no:

[wkid_one]

I'll bring one around

[vifferman]

Before my accident, the bike used to sound like rrrrrroooooaaar.

Now it's like rooooooaaaaaaeeeeek!!!!In that case, it's most unlikely to be anything to do with the cat. More likely a mouse or rat has taken up residence in the nice cosy airbox while your bike was laid up. That eeeeek!!!! is a dead giveaway.

[wkid_one]

I think it is an ID ten T error caused at installation myself

[Devil]

Does this new shriek sound better than the roar?
is the bike working correctly?

If yes to the above, leave it as it is :D

[dhunt]

I think it is an ID ten T error caused at installation myself
Do you get those as well. We get them all the time! I would guess a huge number of our computer problems are related to that error. Didn't realise you could get them with bikes though.

David

[wkid_one]

Do you get those as well. We get them all the time! I would guess a huge number of our computer problems are related to that error. Didn't realise you could get them with bikes though.

DavidThing is Dave, ID Ten T errors relate to the user not the item being used -so I have no doubt it applies to bikes as well.

[riffer]

Does this new shriek sound better than the roar?
is the bike working correctly?

If yes to the above, leave it as it is :D
No its freakin awful.

And the bike only does 280 to reserve instead of 300.

[FROSTY]

sounds like one of the pipes fron m the carbs to the airbox has come adrift.
Dont use rtv unless you do have a crack in the airbox.