good discussion - and i think one factor not included is skill - certainly engine braking a z or a chevy van through a series of canyon esses requires practice (not exactly a fuel saving idea there, racing through canyons just to sharpen skills) which most folks don't really get - i certainly crunched a lot of gearboxes in my youth trying to drivc like aj foyt without knowing the first thing about it - (or having multi-millionn dollar sponsorship and a pit crew that can swap trannies in a minute and a half)
On Apr 26, 2006, at 10:37 AM, John Bange wrote: > But using your engine as a braking mechanism wears your engine out > faster, > so I would imagine that replacing your brake pads is a lot less > expensive > than replacing your engine? > Click and Clack, for all their sneering at Vanagons, like to make the very good point that brakes are FOR braking, and brake pads are replaceable for cheap. Transmissions and engines, not so much. I think YMMV on this quite widely, though, depending on what and how you drive. My boss, annoyed with having to change brake pads on this 9800lb Chevy van every 2000 miles (the brakes were totally inadequate for the van, newer vans had larger brakes), and started downshifting instead. His pads were lasting almost 6000 miles for a whole year, until the transmission crapped out. Downshifting to slow down a 5-ton van? Apparently not so good. On the other hand, I had a '78 280Z I downshifted constantly, weighed something like 2800lbs and had a monster of a 5-speed manual transmission and an iron-block inline 6 engine. In 6 years and 80,000 miles I changed brake pads twice and never had the slightest indication of drive train wear. Clearly a Vanagon falls somewhere in between those extremes, but it's hard to say where. Vanagon drive train is probably weaker than that in either a Chevy van or an early Z, but then again Vanagons don't usually weigh 10K pounds, nor are Vanagon drivers likely to slow down from 120mph by downshifting and dropping the clutch... eau |
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