View Single Post
Old 02-26-2009, 02:05 PM   #7 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 8,658

Blackfly - '98 Metro
Team Metro
90 day: 78.84 mpg (US)

ForkenSwift - '92 Metro EV
90 day: 106.27 mpg (US)
Thanks: 23
Thanked 68 Times in 49 Posts
Neat.

I think the fist gen. Insight 1.0 litre engine had an offset crank as well. (Plus roller rockers and other stuff.)

Yup: InsightCentral.net - Encyclopedia - Honda Insight Offset Cylinder

Quote:
The engine block has a unique, offset cylinder design in which the bore center is offset 14mm from the crank center. Maximum combustion pressure occurs at a point where the connecting rod is straight up and down in the cylinder. In this position there is zero lateral force so friction and piston slap are reduced.

As a result of the offset construction, the combustion pressure is used more efficiently since the rod is near it maximum leverage point with the crankshaft.
__________________
Latest project: removable Geo Metro boat tail
Latest test: Massive cardboard air dam on a Geo Metro


www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote