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Old 01-02-2006, 01:49 AM   #31
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Quote:
Originally Posted by 2000SilverBullet
Quote:
WHY SOLID ENGINE MOUNTS ?

Didn't GM go through alot of trouble designing hydraulic mounts to keep the vibrations away from the occupants ?
Everything is a compromise....performance vs luxury.
You see the difference between the not as luxury oriented GTP and the more luxury type Bonne engine mounts? GTP uses rubber while the Bonne uses an oil filled rubber dampener.
The downside of not feeling any engine vibration is an engine that flexes. This flex reduces drivetrain tightness ie. the reaction time getting power to the wheels. It also allows so much movement that it is hard on inlet and exhaust tubing.
Another benefit for me was it allowed me to use the GXP strut tower brace and not have the engine flex enough to contact the alternator.
Good God Gertrude ! I didn't know there was all that flexing going on up there.
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Old 01-02-2006, 01:53 AM   #32
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If you really want to check out the flexing, pop the hood, leave the car in park and push on the front bumper to rock the car back and forth. You will see just how much that engine moves.
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Old 01-03-2006, 02:09 PM   #33
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The new mount is in !!

I have some little vibration at light acceleration/load , nothing big , right now im on the puck only, ill let it like that for couple of days and if it continue ill replace one puck by something softer, like a universal mount like did 2000silverbullet.

But this is a very good "mod" it feel more like a sport car now!

I feel the torque instantly, any brutal acceleration in 1st gear result in a instant wheel spin.(road are cold)



Thx !

PS. the old mount was practicaly tear in half. I will post pic as soon as i get my hand a on a camera.
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Old 01-03-2006, 11:38 PM   #34
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Quote:
I feel the torque instantly, any brutal acceleration in 1st gear result in a instant wheel spin.
....and the power to the ground quicker. That'* what I like about it. Much more positive response.

Glad you like it Mike.
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Old 01-05-2006, 08:17 PM   #35
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Old 01-05-2006, 09:34 PM   #36
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orange hockey pucks?

looks good... hows it working?

please tell me u have more pics!
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Old 01-05-2006, 10:00 PM   #37
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Quote:
Originally Posted by harofreak00
orange hockey pucks?

looks good... hows it working?

please tell me u have more pics!
yeah i know, the esthetic suck those are the heavier puck for "practice", they have more strenght.

I really love the solid motor mount, its a totaly different car, you can really feel the torque of the L67 (especially in 1st gear), the power is delivered instantly on the tire.

I have slight vibrations, feeled in the steering and the pedal, (not on frame and seat..)

ill see if ill change one puck by something slightly softer, but i can live with that minimal vibrations.

And my tranny seem to shift better (but my mount was really bad)

I can take more pics tomorow, it was dark outside, ill make a vid to show how it look in action.


And for 55$ total i think its a good deal (if you do it yourself then its a cake)
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Old 01-05-2006, 10:54 PM   #38
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Quote:
Originally Posted by 2000SilverBullet
If you really want to check out the flexing, pop the hood, leave the car in park and push on the front bumper to rock the car back and forth. You will see just how much that engine moves.
I was amazed at how much the motor moves. I was changing plugs and dropped a ratchet extension down the backside of the motor, so I tried rocking the car to get it out. There'* a good 2-3 inches of play there.
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Old 01-05-2006, 10:58 PM   #39
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Now 1/8 inch
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Old 01-05-2006, 10:59 PM   #40
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Quote:
There'* a good 2-3 inches of play there.
Yup.
The solid mount reduces it to almost nothing.
Think of how much response is lost to this excessive movement.

The GM designers were concerned with vibration and harshness elimination for this Luxury version of the L67.
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