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redlightrandy
05-05-2007, 04:53 AM
my car makes this weird sound when i take it past 4 grand. sounds like a rattling similar to the sound the belts make when they go bad. it sounds like it is coming from where my intake manifold is. all my belts and heat shields are good. i was told that it could be engine harmonics. help me out someone. the sound is really annoying almost to the point to where i dont want to floor it anymore.
*inFamous*
05-05-2007, 10:29 AM
I'd be more than happy to check this out when im at TSP or if you can catch me on a weekend at home.
Type - O
05-05-2007, 11:44 AM
probably your harmonic balancer
DJ NeX
05-06-2007, 10:41 AM
detonation?
YewllowDA
05-06-2007, 11:08 AM
probably your harmonic balancer
honda engine never had harmonic balancer
*inFamous*
05-06-2007, 11:09 AM
honda engine never had harmonic balancer

Technically their 'crank pulley' is their harmonic balancer...
YewllowDA
05-06-2007, 11:09 AM
detonation?
thats possible. well its getting hot now and it tends to preignite which is detonation i think.
YewllowDA
05-06-2007, 11:11 AM
Technically their 'crank pulley' is their harmonic balancer...
cant call it cause our engines our internally balance.
i get what your saying, many engine parts are often called different names
redlightrandy
05-06-2007, 05:00 PM
i know it isn't detonation. the sound doesn't change the way it runs at all. its just a sound. i just dont want the sound to become somethin else ya know.
YewllowDA
05-06-2007, 05:03 PM
mine rattles at different rpms, and it was the heatshield under the car near the exhaust
*inFamous*
05-07-2007, 10:25 PM
cant call it cause our engines our internally balance.
i get what your saying, many engine parts are often called different names

Actually honda counterweights their pulleys to reduce vibrations :) One reason why NOT to switch pulleys with an Aftermarket billet one...
Agent Smith
05-08-2007, 02:46 PM
rattling -- hmm... only at high rpms do you NOTICE it (meaning it might do it all the time but you only notice it after 4k) or does is just only do it at high rpms? my 1st guess is valve lash or a rod bearing :(

when was the last time you had your valves adjusted?
redlightrandy
05-09-2007, 02:17 AM
ya it starts at just over 4k and doesn't stop till it drops below 4k
redlightrandy
05-09-2007, 02:18 AM
never had the valves adjusted before.