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Thread: Engine Modification
07-20-2004, 11:58 PM #188
07-15-2005, 03:54 PM #189
LOL, copycatOriginally Posted by cooler
Super Power: AMG V8 proves thereís no replacing displacement
DUTCH MANDEL and GREG KABLE
Posted Date: 7/15/05
In what Mercedes-Benz claims to be the most powerful, naturally aspirated eight-cylinder engine extant, the firmís performance arm has developed a powerplant that will make it into virtually all its high-horsepower models.
M-B claims the 6.2-liter V8 develops ďa minimumĒ of 510 horsepower and 464 lb-ft of torque without a supercharger, and has 20 percent more torque than other free-breathing engines in class. Cars fitted with the engine will get a 6.3-liter badge.
The engine and cylinder heads are high-strength aluminum and created with the latest metallurgical technology. Cylinder walls undergo a process to minimize friction, increase durability and add strength: The cylinder walls are twice as hard as conventional cast-iron liners.
AMG developed the engine without Mer-cedes. It has a throaty exhaust note reminiscent of late-1960s Trans-Am cars. It not only sounds better than the supercharged 5.4-liter models it replaces, it is smaller and lighteró438 pounds vs. 485 pounds.
AMG fitted a CLK DTM street racer with an engine for drive impressions. A bit of a shell game, on-site engineers privately agreed the car developed near 580 horsepower. Regardless, at first blush and full throttle the engine is a torque beast. That the 6.3 can fit in a current C-Class lends expectations that of the 24,000 engines AMG can build annually, they will be spread across the lineup. The 6.3 debuts at this fallís Frankfurt show in an M-Class. It will be available in the States next year.
07-17-2005, 03:26 PM #190Originally Posted by cooler
07-18-2005, 12:11 PM #191
honda engines are nice. small displacement but big in horsepower, all motor engines, i had a b18c integra type r engine tuned by spoon sports that pumps out 220hp
07-19-2005, 03:11 PM #192
wow, what did the dudes do to it? new camshafts, new chip, new ignition system, . . . etc.? No turbocharger & intercooler? And 220 hp is wheel horsepower?
Originally Posted by glencomienda111
07-19-2005, 03:14 PM #193Originally Posted by glencomienda111
07-21-2005, 09:39 AM #194
Horsepower doesn't mean anything by itself. A 600 bhp power car may be easily beaten by a 90 bhp car in an acceleration test. It is power-to weight ratio, OTHBE, that really counts.
07-21-2005, 03:08 PM #195Originally Posted by taneepak
07-21-2005, 09:05 PM #196Originally Posted by cooler
07-21-2005, 09:47 PM #197Originally Posted by taneepak
a better comparison should be with this foreign car eater AND IT'S A AFFORDABLE CAR.
oh, btw, it weighs 1317 kg, power to weight ratio=0.46 vs your lotus of measly 0.15
taneepak, if a car is 4000 kg, u need to up the hp to like this one
Last edited by cooler; 07-21-2005 at 09:58 PM.
07-21-2005, 10:24 PM #198Originally Posted by cooler
Cooler, you have now come around and are talking sense, like "...power to weight ratio=0.46 vs your Lotus measly 0.15". See what I mean?
07-22-2005, 01:15 AM #199Originally Posted by taneepak
Also, power to weight ratio alone isnt everything. There are many other design parameters that can enhance or degrade acceleration
Last edited by cooler; 07-22-2005 at 01:28 AM.
07-22-2005, 01:34 AM #200Originally Posted by cooler
I thought he meant the Elise at first, but as the Elite is a 40 year old car I guess he really means the Elite.
Dunno why pick the Elite though if you're after acceleration. Closest model to that described that i can see is the 1962 @ 660kg and 83bhp 0-60mph 11s (maybe there was a sportier version back in the day)
why not go for the recent Exige @ 930kg 243bhp 0-60mph 3.9s
07-22-2005, 01:45 AM #201
I meant it to be Lotus Elise.
07-22-2005, 01:49 AM #202
Are you sure? Elise uses Toyota Cecila & Matrix high-output I-4 engines.
Originally Posted by taneepak
07-22-2005, 02:12 AM #203Originally Posted by taneepak
There are many models and modified version of lotus elite, lets compare FACTORY VERSION and a factory version of a american truck.
From these links:
General specifications of Lotus Elite
Record last updated Before 12 / 01 / 2004
Country of origin Great Britain
Years of production 1957 - 1963
Introduced at 1958 Geneva Motorshow
Numbers built 1050
Body design Colin Chapman, Peter Kirwan-Taylor, Frank Costin
Weight 673 kilo / 1483.7 lbs
Engine Coventry Climax FEW Straight 4
Engine Location Front , longitudinally mounted
Displacement 1.216 liter / 74.2 cu in
Valvetrain 2 valves / cylinder, SOHC
Fuel feed 2 SU H4 Carburetors
Aspiration Naturally Aspirated
Gearbox BMC 4 speed Manual
Drive Rear wheel drive
Power 75 bhp / 56 KW @ 6100 rpm
Torque 104 Nm / 77 ft lbs @ 3750 rpm
BHP/Liter 62 bhp / liter
Power to weight ratio 0.11 bhp / kg
Top Speed 193 km/h / 120 mph
0-60 mph Acceleration 10.7 s
AND COMPARE TO a 2002 CHEVROLET AVALANCHE with 0.11 bhp/kg ratio too.
2002 Chevy Avalanche
Drivetrain layout Front engine, rwd
Engine type V-8 OHV, 2 valves/cyl, iron block, alum heads
Displacement, ci/cc 326.9/5358
Hp @ rpm 285 @ 5200
Torque @ rpm 325 @ 4000
Transmission 4-speed automatic
Suspension, front; rear Upper and lower control arms, torsion bars, anti-roll bar; solid axle, multilink, coil springs, anti-roll bar
Brakes, f;r 12.0-in vented disc; 13.0-in vented disc, ABS
Wheels 17x7.5, cast alum
Tires 265/70R17, Goodyear Wrangler HP
Traction control Yes (opt)
Wheelbase, in 130.0
Length, in 221.7
Width, in 79.8
Height, in 73.5
Curb weight, lb 5678 (2578 kg)
Seating capacity 5
Cargo capacity, cu ft 41.1
Fuel capacity, gal 31.0
0-60 mph, sec 8.2
1/4 mile, sec/mph 16.22/83.42
Braking, 60-0 mph, ft 127
600-ft slalom, mph 54.5
bottom line, two vehicle with same power to weight ratio and yet very different 0-60 mph time. A soccer mom auto tranny 4x4 suv beats a agile sport car with manual transmission in acceleration with same power to weight ratio. Even if i assume that moter trend technican used the best time for the 2002 avalanche, let me give it some slack and add another 0.5 sec on top of best time of 8.2 sec, this truck is still under 9 sec compare to a lotus sport car of 10.7 sec. Displacement rules and i really didn't come completely around
Last edited by cooler; 07-22-2005 at 02:21 AM.
07-22-2005, 02:56 AM #204
you haven't kept all other things equal
I can see some differences between those two vehicles
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