Quote:
Originally Posted by Brian Carlton
Kerry, prior to a certain year, the shift points were controlled by vacuum because there was no Bowden cable.
Do you know the year of the changeover on the W123?
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You're right that's way too broad a statement and I'm making assumptions about the 79Td. My 77 300d has no vacuum control valve and the 'bowden cable' is actually a series of complicated rods operating bell cranks going down thru the intake manifold area then turning 90 degrees to head back to the transmission.
My 79SD has both a vacuum control valve and a solid rod going from the top of the valve cover back down the right side of the engine. But it is a turbo, whereas the 79TD isn't.