View Single Post
jluetjen jluetjen is offline
Registered User
 
jluetjen's Avatar
 
Join Date: Oct 2001
Location: Westford, MA USA
Posts: 8,643
Garage
Keep in mind that the opposed and air-cooled configuration results in each cylinder have separate sets of cooling fins, reinforcements on both the case and the heads, etc.

A V8 on the other hand has a lot of shared metal around the cylinders and between the V. Despite the crude reputation, the thin-wall casting technology of Detroit's V8's is pretty slick. For comparison check out how much a TR6 engine or MGB engine weighs. Surprisingly, they most likely weigh almost as much as a Chevy SB.

But it's not all roses, keep in mind that the 911 engine weight includes the entire cooling systems ready to run, but excludes the most of the oil. I get the impression the the SBV8 engine weights exclude the cooling system and all of the associated water.

Sure, 911 motors are not as light as you might think, but they'd be a heck of a lot heavier if they were built using the same materials and technologies as Detroit's iron.
__________________
John
'69 911E

"It's a poor craftsman who blames their tools" -- Unknown
"Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman

Last edited by jluetjen; 03-26-2003 at 02:36 PM..
Old 03-26-2003, 02:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)