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Old 03-09-2007, 06:24 AM   #91 (permalink)
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Please dont stop now,I was just starting to enjoy this thread !!
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Old 03-09-2007, 08:06 AM   #92 (permalink)
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Quote:
Originally Posted by 300bhp/ton
So I guess p76rangie you are not going to disclose the spec of your Rover 4.4 then????

Just another question dodged

More proof it's all bs.

I think its time to add you to the ignore list. Later, much much later.
Never in the memory of man has a topic being so amusing!!!

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!!
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76 S3 LWB
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89 RR 3.5 mazda TDi
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Old 03-09-2007, 10:41 AM   #93 (permalink)
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Quote:
Originally Posted by onslow
Never in the memory of man has a topic being so amusing!!!

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!!
Dont put him off, you'll spoil the fun !
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Old 03-09-2007, 01:50 PM   #94 (permalink)
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We have two doubters now. Remember the figures are taken at the wheels.

I have given the answer previously in other threads on this forum.
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Old 03-09-2007, 01:58 PM   #95 (permalink)
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You cant even get a hold of that, I'm not doubting - just enjoying the ride !
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Old 03-09-2007, 02:11 PM   #96 (permalink)
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Not you buick, onslow and 300bhp. Need more doubters before it is worth giving the answer.
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Old 03-09-2007, 02:31 PM   #97 (permalink)
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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"
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Old 03-09-2007, 06:24 PM   #98 (permalink)
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Quote:
Originally Posted by p76rangie
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"

Some people just do not know when to come in out of the rain!!!!
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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
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Old 03-10-2007, 06:10 AM   #99 (permalink)
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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.
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Old 03-12-2007, 12:50 AM   #100 (permalink)
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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.
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Old 03-12-2007, 04:42 AM   #101 (permalink)
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Quote:
Originally Posted by p76rangie
and they have confirmed that I am correct when I have stated that the wheels only generate 50% of the power at the flywheel.
Shit now its 50%

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?????
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Old 03-12-2007, 05:01 AM   #102 (permalink)
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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:
Originally Posted by kp
Thats exactly what it is, typical procharged car will make its peak torque much higher.

Dynojet sort of fixed the RPM being off and the big torque spike with large stalled autos with winPEP 7, I have no idea how they handle it on a mustang dyno.

Numbers look strong, dont worry about the dyno on a high stalled auto, get what you can out of it and run the car at the track. Since you have a TH400 I assume thats what you want to do with it. Leave the dyno racing to M6s and autos that can lock the converter
This is a more extreme case, but the theory and physics are the same.

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.
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Old 03-12-2007, 05:45 AM   #103 (permalink)
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300Bhp, can't you read, I have posted why the graph. Or is that hole you dug just way too deep by now and you are still digging.

I have to say it, your an idiot!!!!
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Old 03-12-2007, 05:56 AM   #104 (permalink)
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"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."
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Old 03-12-2007, 06:43 AM   #105 (permalink)
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Not a man then.

Shame.
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