Sounds

[05.Banshee.SE]

How do you tell the difference between piston slap, detonation, and whatever else there is as far as odd sounds go? Basically any sounds that would signafy a bike malfunctioning.

 

 

I don't really know much as far as this goes, so I was just wondering.

[wednot5]

How do you tell the difference between piston slap, detonation, and whatever else there is as far as odd sounds go? Basically any sounds that would signafy a bike malfunctioning.

 

 

I don't really know much as far as this goes, so I was just wondering.

piston slap is a hollow slaping sound

[BlasterKX]

i beleave a piston slap sound like a chattering in ur top end that speeds up with ur engine when u rev it up. but im not to sure. and detanation has like a knocking soound. i think thats what they sound like but i could be wrong. its kinda hard to say without hearing it.

[05.Banshee.SE]

I might be having piston slap then. There's no sounds at idle, but as I rev it, it has like a chatter sound. I know the compression is low, I was just letting it idle up after I washed her for final storage before I get the cash to overhaul it (4mil/porting/carbs, etc.) I want to get to a rebuild before it does blow.

 

21cc domes, Pro Design Coolhead @ Sea Level timing is at +4.

 

It does have a "hollow" tinge to it, so that's probably it!

 

I'd like to hear any other descriptions though for the future.

 

Actually, lemme see if I can get some vid...it will probably be shitty phone quality though.

[05.Banshee.SE]

 

 

Not exactly the best video...

[CBAIER1206]

I've never heard detonation on a banshee (thank god), but In a car it sounds just like somebody is shaking an empty coke can that has pennies in it.

 

Yours doesnt really sound like that. Unfortunately the only way your gonna be able to tell is to tear down the cylinders and look for evidence. Some people on here have reccomended taking a stethascope and trying to pinpoint the noise ie. bottom end, top end, one side vs. another.

 

If you say your compression is low then tearing it down and rebuilding it might be a good idea anyways...

 

Good Luck

[05.Banshee.SE]

I've never heard detonation on a banshee (thank god), but In a car it sounds just like somebody is shaking an empty coke can that has pennies in it.

 

Yours doesnt really sound like that. Unfortunately the only way your gonna be able to tell is to tear down the cylinders and look for evidence. Some people on here have reccomended taking a stethascope and trying to pinpoint the noise ie. bottom end, top end, one side vs. another.

 

If you say your compression is low then tearing it down and rebuilding it might be a good idea anyways...

 

Good Luck

 

Eh, I'm not to worried because the rebuild plan has been in the works for a while now. Either way, I'm stopping it before it goes. I'd say it's piston slap, and if it's not...it's not changing my mind about the rebuild lol. W/o a steth., I can almost say for sure the noise is in the top end. But regardless, it's getting ripped the f*ck apart for the crank, rebuild, porting, etc. Just need to save the cash.

 

Should the stock clutch be alright on a 4 mil?

 

EDIT-

 

The only reason the compression is low because I rode it so much. Has a really good amount of hours on the current top end. Once it's all good to go again, I'll be parking it a hell of a lot more.