what is the advantages or disadvantages of useing solid motor mounts on a street car?i'm building a mild 350 TPI for my bird and was wondering if i would benafit from using solid motor mounts.
this car will see track time and possibly some auto crossing.


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1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
http://discussion-board.com/GreaterC...dyAssociation/
http://www.cincyspeed.com/

 

There are no advantages, unless your motor has so much power that it's ripping stock ones in half.

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"So many Mustangs, so little time..."
ICON Motorsports

 

When an engine torques over, that's energy transmitted into motion where you don't want it. When you're looking to put every bit of power to use, you want to control as much of the rotational forces as possible. That's why rear suspension parts are swapped out for aftermarket parts. The stock parts move and flex causing power to be lost. When you reduce or eliminate those loses the power is then transmitted to weight transfer or to the drive wheels.

You can just as easily use a torque strap to tie the engine down.

The downside to solid engine mounts or suspension components is noise and vibration.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.69
Best MPH on a time slip: 121.52 altitude corrected to 127.76
Altitude corrected rear wheel HP based on power to weight ratio: 504.5
Best 60 foot: 1.546

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley