10-25-2012, 02:59 PM | #11 |
Crazy Old Man
Join Date: Dec 2003
Carmudgeonly Ride: M2C Stick
Posts: 6,021
|
NICE!! and with a manaul of course!!
__________________
Searching |
10-25-2012, 03:23 PM | #12 |
Solving problems
Join Date: Oct 2003
Carmudgeonly Ride: M5 / 718 GTS / Cooper S / GTI / LR4
Location: Metro Boston
Posts: 25,279
|
|
10-25-2012, 03:58 PM | #13 |
Western Anomaly
Join Date: Oct 2003
Carmudgeonly Ride: White Orca
Posts: 16,644
|
i'm sure they're looking into that (because the pushrod v8 is quite compact) as well as forced induction v6 versions.
__________________
|
10-26-2012, 01:07 PM | #14 |
Jeeped
Join Date: Sep 2005
Carmudgeonly Ride: Modified Jeep Tj and '07 Miata
Location: Seattle
Posts: 10,214
|
Remind me again why a lot of the automotive press and a number of enthusiasts poo-poo the "old tech" pushrod V8 and clamor for the overhead cam layouts?
__________________
. "Jeep is the only true American sports car*" - Enzo Ferrari * Or something to that effect. |
10-28-2012, 08:06 AM | #15 | |
Western Anomaly
Join Date: Oct 2003
Carmudgeonly Ride: White Orca
Posts: 16,644
|
Quote:
historically, it's been because of low redlines and lower specific output on an HP per litre metric. if those are the metrics, some of those opinions are valid --on the other side, i've never seen 26mpg in a DOHC V8 in my life, whereas I have with a 427ci OHV one (easily).
__________________
|
|
10-28-2012, 08:26 AM | #16 | |
No more BMWs
Join Date: Apr 2005
Carmudgeonly Ride: Ram, MS3, CX-5, RX-8
Location: Glenwood, MD
Posts: 14,753
|
Quote:
Of course, that comes at a price. Weight, complexity, cost, and size to name a few. |
|
10-28-2012, 08:30 AM | #17 | |
Western Anomaly
Join Date: Oct 2003
Carmudgeonly Ride: White Orca
Posts: 16,644
|
Quote:
while NASCAR powerplants redline at 9000rpms or so, obviously that's not tractable for small block v8s that are in street cars. so the added weight and complexity is worth it, in that respect.
__________________
|
|
10-28-2012, 09:25 AM | #18 |
195
Join Date: Oct 2003
Posts: 24,632
|
The 26 mpg thing isn't really fair, though--that's in the Corvette, which is small, light, and (most importantly) has an interplanetary overdrive gear.
Put a 4.x liter DOHC V8 in a similar car with a similar OD and I don't know that the mileage would be any worse. |
10-28-2012, 11:08 AM | #19 |
Western Anomaly
Join Date: Oct 2003
Carmudgeonly Ride: White Orca
Posts: 16,644
|
I guess the question is if engines of similar displacement in lightweight cars get ???
The closest would be an F430? And then the Merc 6.2L in a c class car? I don't know what those get at cruising speed.
__________________
|
10-28-2012, 11:54 AM | #20 |
195
Join Date: Oct 2003
Posts: 24,632
|
There's no direct comparison that I'm aware of. Closest might me something like a GT3, which is obviously a 6 rather than an 8. But no one gears their cars the way that GM gears the Vette, in part because the general bias in European cars seems to be final drives and top gears that put the engine closer to the meat of the powerband at cruising speeds.
The 7 speed in the new Carrera S has a cruising oriented top gear, but I don't have the time right now to look up the gearing and fuel economy numbers for that car (and even that one is down 2 cylinders and 70 hp on the new Corvette). |
Bookmarks |
|
|