Car Vibration Question
Thread Starter
CF Senior Member
Joined: May 2005
Posts: 3,262
Likes: 21
From: Palm City Florida
Car Vibration Question
I notice that at red lights or just running the engine in park, the car vibrates. The tach is nice and steady, but the car definitely vibrates or slightly shakes. Coming from a smooth BMW 225 hp engine I am use to not feeling anything from the engine. I could hardly tell the BMW was turned on. I test drove another vette before buying mine and it seemed to do the same. Is this normal?
Thanx,
rich
Thanx,
rich
Advanced
Joined: Jun 2005
Posts: 91
Likes: 0
From: Palm Coast Florida
vibration
Originally Posted by xcutter
I notice that at red lights or just running the engine in park, the car vibrates. The tach is nice and steady, but the car definitely vibrates or slightly shakes. Coming from a smooth BMW 225 hp engine I am use to not feeling anything from the engine. I could hardly tell the BMW was turned on. I test drove another vette before buying mine and it seemed to do the same. Is this normal?
Thanx,
rich
Thanx,
rich
Le Mans Master
Joined: Aug 2000
Posts: 5,529
Likes: 1,943
From: Austin Texas
While the balance of a 360 degree crankshaft V8 is as perfect as this engine architecture allows (low vibrational energy), it does not provide equally spaced intake and exhaust intervals on each bank. The firing order is LRLLRLRR and this causes the burbling exhaust note American V8s are known for.
One can achieve better intake and exhaust resonances with a 180 degree crankshaft (think Ferrari) but this leads to about 4 times as much vibrational energy that has to be controlled by the motor mounts and chassis. The firing order of a V8 Ferrari is LRLRLRLR.
The I6 you are used to has a front bank and rear bank of evenly spaced intake and exhaust intervals and its firing order is FBFBFB, leading to a more smooth intake and exhaust resonance.
That is, its completely normal.
One can achieve better intake and exhaust resonances with a 180 degree crankshaft (think Ferrari) but this leads to about 4 times as much vibrational energy that has to be controlled by the motor mounts and chassis. The firing order of a V8 Ferrari is LRLRLRLR.
The I6 you are used to has a front bank and rear bank of evenly spaced intake and exhaust intervals and its firing order is FBFBFB, leading to a more smooth intake and exhaust resonance.
That is, its completely normal.
Safety Car
Joined: Jan 2005
Posts: 4,105
Likes: 5
From: Las Vegas Nevada
Mine does not vibrate, in fact its the only Vette I have been in where the engine idles very smooth. Not one problem only thing that Pi___sses M/O Is the glove box vibrates & rattles when Im cruising.
Thread Starter
CF Senior Member
Joined: May 2005
Posts: 3,262
Likes: 21
From: Palm City Florida
Thanx everyone. I thought it was normal. I feel alot better.
I love the looks I get from everyone while cruising in this machine.
I love the looks I get from everyone while cruising in this machine.
Originally Posted by MitchAlsup
While the balance of a 360 degree crankshaft V8 is as perfect as this engine architecture allows (low vibrational energy), it does not provide equally spaced intake and exhaust intervals on each bank. The firing order is LRLLRLRR and this causes the burbling exhaust note American V8s are known for.
One can achieve better intake and exhaust resonances with a 180 degree crankshaft (think Ferrari) but this leads to about 4 times as much vibrational energy that has to be controlled by the motor mounts and chassis. The firing order of a V8 Ferrari is LRLRLRLR.
The I6 you are used to has a front bank and rear bank of evenly spaced intake and exhaust intervals and its firing order is FBFBFB, leading to a more smooth intake and exhaust resonance.
That is, its completely normal.
One can achieve better intake and exhaust resonances with a 180 degree crankshaft (think Ferrari) but this leads to about 4 times as much vibrational energy that has to be controlled by the motor mounts and chassis. The firing order of a V8 Ferrari is LRLRLRLR.
The I6 you are used to has a front bank and rear bank of evenly spaced intake and exhaust intervals and its firing order is FBFBFB, leading to a more smooth intake and exhaust resonance.
That is, its completely normal.
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Le Mans Master
Joined: Dec 2002
Posts: 7,588
Likes: 6
From: Montreal Qc
Originally Posted by xcutter
Thanx everyone. I thought it was normal. I feel alot better.
I love the looks I get from everyone while cruising in this machine.
I love the looks I get from everyone while cruising in this machine.
