Straight 8?
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Senior User
Joined: Jun 2003
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From: San Jose, CA
Straight 8?
I was wondering, with today's technology wouldn't it be possible to make a straight 8 small enough to fit into current models of trucks? Correct me if I'm wrong, but wouldn't this be a far more efficient and torquey motor than any of the current V8 offerings? Your thoughts please!
Post Fiend
Joined: Jan 2003
Posts: 10,323
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From: Montana Territory
Volkswagen (Audi) does... but its not a straight 8 cylinder engine. Technically the crankshaft would be hideously long and produce terrible stresses on specific mains, no matter what the firing order is. With the 4 valve heads so common nowadays, you would need dual over head cams, and stresses become very important....
and I8 isn't very user friendly to designers, who work with smaller engine compartments and bigger cabins, and big demand on AWD and 50/50 weight ratios for handling...
VWs is a W8, it looks like a W, and it has two cranks, and two cams, its actually quite similar to an H (Boxer, Porsche) motor, but two more cylinders.
if any of that makes any sense
and I8 isn't very user friendly to designers, who work with smaller engine compartments and bigger cabins, and big demand on AWD and 50/50 weight ratios for handling...
VWs is a W8, it looks like a W, and it has two cranks, and two cams, its actually quite similar to an H (Boxer, Porsche) motor, but two more cylinders.
if any of that makes any sense
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
Huh? Audi/vw motors only have one crank. They are based on the VR6 engine, which is a 15* v-6, almost an inline. They only have one head, too, with intake on the front of the motor and exhaust out the back. The w-series engines are 12, 16, and 18 cylinder engines, that are basically two of the VR-style engines sharing a crank. They have an intake similar to a standard v-8, and exhausts on both sides.
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