![]() |
![]() |
|
|||||||
| Register | Home | Forum | Active Topics | Gallery | Search | Today's Posts | Mark Forums Read |
![]() |
|
|
LinkBack | Thread Tools | Display Modes |
|
|
#92 (permalink) | |
|
Series Moderator
![]() Join Date: Aug 2004
Location: The Lake district,UK
Posts: 532
Gallery:
0
|
Quote:
Im sorry but no way in hell will an old V8 of rover design produce anywhere near the performance figures P76 has quoted, im sorry P76 but maybe the heat in oz is getting to you but I think that you are unable to admit when your wrong and are ultimately do not have the knowledge to back up your arguement,with 400 lb/ft you must really go through gearboxes at an alarming rate!!
__________________
Current fleet 86 90 V8 in bits 86 RR classic Under repair 94 Disco TDI 3dr ex-police 256k and still going 80" coil sprung V8 auto Trialer in progress 71 2a Trialer V8 auto,parabolics,6" shackles,power steering awesome machine Stuff I have had at one time or another 76 S3 LWB 65 2a ex mil swb 71 2a swb safari 67 2a 1 tonne TACR 57 S1 V8 SWB 81 S3 SWB diesel 82 s3 SWB diesel 82 RR 2 dr perkins diesel 83 RR 4dr V8 84 RR 4dr V8 LPG 83 RR 4dr V8 LPG "in vogue" 88 RR gm 6.2 V8 Diesel 89 RR 3.5 mazda TDi 75 S3 LWB stationwagon 75 S3 2.6 LWB 86 110 2.5D 91 disco V8 91 disco TDi 89 disco V8 81 RR isuzu 2.8 TD |
|
|
|
|
|
#93 (permalink) | |
|
Senior Member
Join Date: Apr 2006
Location: UK,west Country
Posts: 143
Gallery:
0
|
Quote:
|
|
|
|
|
|
#97 (permalink) |
|
Ian Matthews
Join Date: Jan 2006
Location: Melbourne Australia
Posts: 2,069
Gallery:
0
|
There are two facts you can work off:
1) The graph is correct and gives a correct distribution of the torque and HP at the wheels. 2) Based on the gearing, atmosphere, etc, etc, the peak horsepower figure on the graph is less than half that at the actual flywheel. Remember "the answer is out there" |
|
|
|
|
#98 (permalink) | |
|
Series Moderator
![]() Join Date: Aug 2004
Location: The Lake district,UK
Posts: 532
Gallery:
0
|
Quote:
Some people just do not know when to come in out of the rain!!!! ![]()
__________________
Current fleet 86 90 V8 in bits 86 RR classic Under repair 94 Disco TDI 3dr ex-police 256k and still going 80" coil sprung V8 auto Trialer in progress 71 2a Trialer V8 auto,parabolics,6" shackles,power steering awesome machine Stuff I have had at one time or another 76 S3 LWB 65 2a ex mil swb 71 2a swb safari 67 2a 1 tonne TACR 57 S1 V8 SWB 81 S3 SWB diesel 82 s3 SWB diesel 82 RR 2 dr perkins diesel 83 RR 4dr V8 84 RR 4dr V8 LPG 83 RR 4dr V8 LPG "in vogue" 88 RR gm 6.2 V8 Diesel 89 RR 3.5 mazda TDi 75 S3 LWB stationwagon 75 S3 2.6 LWB 86 110 2.5D 91 disco V8 91 disco TDi 89 disco V8 81 RR isuzu 2.8 TD |
|
|
|
|
|
#99 (permalink) |
|
jimfoo
|
Ok, I'm going to take a stab at it. I can believe that your torque curve is
correct, as it is similar to my 2.25, and reflects an engine built for lower RPMs. Since the torque at those RPMs seems a bit high, I am going to guess you have a supercharger as I know they work at every RPM, so would increase torque down low and give a very flat curve. ![]() |
|
|
|
|
#100 (permalink) |
|
Ian Matthews
Join Date: Jan 2006
Location: Melbourne Australia
Posts: 2,069
Gallery:
0
|
The answer is very simple, it is an auto. The torque converter in an auto does just that, it generates a huge amount of torque down load. That is why anyone that puts a low down torque cam in an auto is wasting their money, they dont need anymore torque down low, they just need it up higher.
I have been away at a comp for the last few days (will post some photos later). These guys regularly put there cars on a Dyno to get that bit more out of them and they have confirmed that I am correct when I have stated that the wheels only generate 50% of the power at the flywheel. (some of these guys generate 260Kws plus at the wheels.) So the mystery is now over, but I will not hold my breath for an appology from 300Bhp. But anyone that has had anything to do with Dynos would have picked the curve straight away as that belonging to an auto. Just goes to show how many experts are really on this forum. |
|
|
|
|
#101 (permalink) | |
|
The Best 4X4XFar
Join Date: Mar 2005
Location: England, home of the Land Rover
Posts: 598
Gallery:
0
|
Quote:
![]() Damn p76 you'd better get that engine to the patent office darn quick then sell the rights to Ford or something. Wow a 50 year old OHV that makes more than (260 x 2) 520lb ft @ 1600rpm. Ford will so want to put this engine in the Ford GT as clearly the DOHC 5.4 litre unit they use at the moment even with a twon screw supercharger is just a wimp by comparion. Seriously dude, look at the numbers you are claiming then go look at other cars and 4x4's. Hell at this rate you are even beating the 8.0 litre V10 from the Dodge Ram (a few years back) and the 5.9 litre turbo diesel Cummins enigne they use as well. The Ford 7.3 V8 diesel can't hold a candle at these rpms either. Or maybe, just maybe it's all bs????? ![]()
__________________
Land Rover Discovery (3 Door) 200Tdi 5-speed ![]() Mods:Allisport LARGE FMIC | Allisport Tuned | Simex Jungle Trekker II 33.11.50R15 Tyres | 15x8 8 Spokes | Heavy Duty Uprated Suspension (shocks & springs) | Wheel arch Flares | 1" Wheel Spacers | Custom Straight Thru Exhaust | Custom Trimmed Front bumper with twin NATO Hooks | Custom Rear Bumper with single Large NATO Hook 360˚ Swival | Front Light Guards | Custom Aluminium Rear Floor | Bonnet Straps | 100w Spot Lights | Upgraded Headlights The Best 4X4XFar |
|
|
|
|
|
#102 (permalink) | |
|
The Best 4X4XFar
Join Date: Mar 2005
Location: England, home of the Land Rover
Posts: 598
Gallery:
0
|
P76 here's another example of an incorrect dyno graph.
It's from an auto withOUT a lockup converter. This is a 402ci (6.6 litre) Ls1 with a D1SC Procharger supercharger. As this is a centrifugal blower it is 100% rpm dependant, meaning the faster the motor spins the faster the blower spins and the more boost it makes. So PEAK numbers should be quite high in the rpms. But due to the converter the PEAK torque appears to be at 2500rpm giving a profile more commonly found with a PD (Postive Displacement) blower like a Roots style or twin screw, as these are NOT rpm dependant. ![]() Quote:
Be a man and accept you got it wrong. Nobody will think any less of you, in fact quite the opporsit you'll likely gain a great deal of respect.
__________________
Land Rover Discovery (3 Door) 200Tdi 5-speed ![]() Mods:Allisport LARGE FMIC | Allisport Tuned | Simex Jungle Trekker II 33.11.50R15 Tyres | 15x8 8 Spokes | Heavy Duty Uprated Suspension (shocks & springs) | Wheel arch Flares | 1" Wheel Spacers | Custom Straight Thru Exhaust | Custom Trimmed Front bumper with twin NATO Hooks | Custom Rear Bumper with single Large NATO Hook 360˚ Swival | Front Light Guards | Custom Aluminium Rear Floor | Bonnet Straps | 100w Spot Lights | Upgraded Headlights The Best 4X4XFar |
|
|
|
|
|
#104 (permalink) |
|
Ian Matthews
Join Date: Jan 2006
Location: Melbourne Australia
Posts: 2,069
Gallery:
0
|
"The maximum amount of torque multiplication produced by a converter is highly dependent on the size and geometry of the turbine and stator blades, and is generated only when the converter is at or near the stall phase of operation. Typical stall torque multiplication ratios range from 1.8:1 to 2.5:1 for most automotive applications (although multi-element designs as used in the Buick Dynaflow and Chevrolet Turboglide could produce more). Specialized converters design for industrial or heavy marine power transmission systems are capable of as much as 5.0:1 multiplication."
|
|
|
|
|
#105 (permalink) |
|
The Best 4X4XFar
Join Date: Mar 2005
Location: England, home of the Land Rover
Posts: 598
Gallery:
0
|
Not a man then.
Shame.
__________________
Land Rover Discovery (3 Door) 200Tdi 5-speed ![]() Mods:Allisport LARGE FMIC | Allisport Tuned | Simex Jungle Trekker II 33.11.50R15 Tyres | 15x8 8 Spokes | Heavy Duty Uprated Suspension (shocks & springs) | Wheel arch Flares | 1" Wheel Spacers | Custom Straight Thru Exhaust | Custom Trimmed Front bumper with twin NATO Hooks | Custom Rear Bumper with single Large NATO Hook 360˚ Swival | Front Light Guards | Custom Aluminium Rear Floor | Bonnet Straps | 100w Spot Lights | Upgraded Headlights The Best 4X4XFar |
|
|
| Sponsored Links | |
Advertisement |
|