lesingepsycho
Jedi Warrior
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Re: 5 Speed Tranny , 1979, 1500 Midget
The original backing plate is steel, actually rather thin and weighs an ungodly amount. The new adapter plate is aluminum but it is at least 2-3 times thicker than the original plate and still is considerably lighter, a mere fraction of the weight. Since its main purpose is to act as a spacer/adapter, it is more than sufficient in strength. Plus any forces that occur between the engine and transmission would be at a right angle to the adapter plate as torque forces (which should be going through the transmission to the wheels, not the adapter!) so really the fasteners holding it all together are probably more important than the metallurgical properties of the adapter.
The original backing plate is steel, actually rather thin and weighs an ungodly amount. The new adapter plate is aluminum but it is at least 2-3 times thicker than the original plate and still is considerably lighter, a mere fraction of the weight. Since its main purpose is to act as a spacer/adapter, it is more than sufficient in strength. Plus any forces that occur between the engine and transmission would be at a right angle to the adapter plate as torque forces (which should be going through the transmission to the wheels, not the adapter!) so really the fasteners holding it all together are probably more important than the metallurgical properties of the adapter.