What Does Detonation Sound Like???

[ViperRichRT10]

Can anyone tell me what detonation sounds like? I have a Roe SC and a somewhat loud exhuast. What does it sound like from the drivers seat at wide open throttle????

Thanks,

Rich

 

[carguy07]

Sort of like a shoe box with small rocks rattling around inside.

 

[PhoenixGTS]

Like the car's teeth are chattering in general, but I have to admit I've never heard a Viper rattle before.

 

[Joseph Dell]

Know that thing when you push the gas pedal down? it sounds like that...

think school bus going up-hill sounding like a bunch of marbles.

if you are worried about it, put in a few gallons of 100 octane and that should clear it right up. or we can take some timing back out...

JD

 

[ViperRichRT10]

Could it sound like sand in the front fenders? Of course there is no sand on the road. It just sounds like that when I mash the gas.

 

[Kiaser]

random ticking, sometimes not very audible. Sounds like tiny rocks coming up and hitting the firewall in front of your legs.

 

[ViperRichRT10]

Know that thing when you push the gas pedal down? it sounds like that...

think school bus going up-hill sounding like a bunch of marbles.

if you are worried about it, put in a few gallons of 100 octane and that should clear it right up. or we can take some timing back out...

JD

JD, Maybe we should take some timing out. It is a high pitch, tinny, sandy sound????

 

[Dimitrios]

get it fixed. i couldnt get dyno time and my pistons went. i had detonation for most of the summer. now the motor is opened up and its costing me a bomb. get it tuned right!

 

[ViperRichRT10]

get it fixed. i couldnt get dyno time and my pistons went. i had detonation for most of the summer. now the motor is opened up and its costing me a bomb. get it tuned right!

Dimitrios,

Does what I describe sound like what you were experiencing?

 

[Mr Hemi Head]

A wideband A/F monitor would be helpful especially with the S/C.I'm using a Wideband Commander and there are others. It provides some peace of mind and is a must for tweaking the VEC2. Rick

 

[ruckdr]

If you can hear it, you are definitely doing damage!!!!!
Even if you can't hear it damage is being done - get it fixed !!!
Later,

 

[Joseph Dell]

it it part throttle or WOT that it happens at?

JD

 

[Warfang]

When I hammer the gas on the freeway, I hear some chattering noise. Sounds like detonation, but feels like it's coming from behind the car. Could it be something else? I only use premium gas.

 

[ViperRichRT10]

it it part throttle or WOT that it happens at?

JD

JD,

It is only at wide open throttle.

Rich

 

[PhoenixGTS]

When I hammer the gas on the freeway, I hear some chattering noise. Sounds like detonation, but feels like it's coming from behind the car. Could it be something else? I only use premium gas.

Joe Dell's suggestion of running some 100 octane would be perfect in your situation. Run the tank down to almost empty and throw in 3-4 gallons of 100. If the noise goes away in the same conditions that is a real good indicator it was detonating. If not time to look for another cause.

 

[Simms]

When I had detonation it sounded like a tiny vibration noise from under the hood.

Look at your plugs. Detonation can show up as tiny little round specs on your plugs.

 

[1TONY1]

Detonations sounds like small gravels itting the front wheel wells....like driving on a freshly paved road. Rich, you DO
NOT want your motor doing that....the pistons will easily break.

 

[Joseph Dell]

Tony - go ahead and scare him... gheesh!

JD

 

[big-n-italian]

You may have gotten some bad gas. Happens occasionally.

 

[1TONY1]

Tony - go ahead and scare him... gheesh!

JD

If your changing the pistons instead of me

Rich....add some more timing

 

[Warfang]

When I had detonation it sounded like a tiny vibration noise from under the hood.

Look at your plugs. Detonation can show up as tiny little round specs on your plugs.

I'm in ******-California... where do I get 100 octanes?

 

[Dimitrios]

get it fixed. i couldnt get dyno time and my pistons went. i had detonation for most of the summer. now the motor is opened up and its costing me a bomb. get it tuned right!

Dimitrios,

Does what I describe sound like what you were experiencing?

yes it does...mine did it at around 4500rpms and higher. get it tuned...

 

[ViperRichRT10]

Thanks guys! It sounds like I do have a big problem.

JD,

I'll come by this afternoon so we can adjust...

Thanks,

Rich

 

[Big Medicine]

Like a Jamaican steel drum band.

 

[Joseph Dell]

it isn't a big problem... just a small one. but we can fix it with ease...

JD

 

[Bobpantax]

The sound of money falling out of your pocket against your will.

 

[King RT10]

"Could it sound like sand in the front fenders"

Sounds like you are describing the front air dam suction not detonation.

 

[Warfang]

When I had detonation it sounded like a tiny vibration noise from under the hood.

Look at your plugs. Detonation can show up as tiny little round specs on your plugs.

I'm in ******-California... where do I get 100 octanes?

No clues?

 

[aslowdodge]

erc racing fuels in San Lorenzo. Buy by the drum if you like. Theres a few stations like the 76 in san jose off of almaden that sell 100. You're NA I think, so you shouldn't need it.

 

[Schulmann]

Yes it is like sand hitting the fender.
Retard your ignition a couple degres (2-3).