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  #1  
Old 04-09-2012, 11:48 PM
PanzerSD's Avatar
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Transmission cases

Why is there a change in Case material from Cast iron to Aluminum/alloy?
Specifically the W116 transmissions, 73-5 cast iron to 76-80 Aluminum? Strength? weight? Economical influences? Which is better?

just silly don't know, so I should ask type stuff...

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  #2  
Old 04-10-2012, 03:31 AM
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My vote would be weight - but I don't really know for sure.
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Old 04-11-2012, 01:52 PM
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I thought they were always aluminum.
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  #4  
Old 04-11-2012, 02:11 PM
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Quote:
Originally Posted by wbain5280 View Post
I thought they were always aluminum.
Not the manual transmissions. The older 'boxes had a cast iron centre bit.
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #5  
Old 04-11-2012, 05:23 PM
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The manual gearboxes were procured from different manufacturers. From what I understand the switch to Getrag gearboxes was done for cost reasons.

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