Ultimate Street Sleeper - Mercedes W124 'Superturbodiesel'
Discussion
RoverP6B said:
I think I'm more likely to trust Max Torque than some back-street tuner who clearly don't understand how their dyno works... and something that chucks that much smoke has no place on the road.
As I said much earlier - a *36 AMG straight-six or M120 V12 swap would be far more interesting. The latter can be made to produce a genuine 700bhp+!
Watch their videos, they come across very well, so back street tuner seems possibly a little unfair.As I said much earlier - a *36 AMG straight-six or M120 V12 swap would be far more interesting. The latter can be made to produce a genuine 700bhp+!
Yeah, but then there is fitting a V12 in, I think 700 may be something of an overkill scenario in a W124, I am still adjusting to going to my CLS with 388 bhp after my 350Z and it still feels indecently rapid, I cant imagine how quick this must feel, makes me realise that as you go up through the power ranks, you perhaps get to am amount that is enough and possibly as much as I can realistically handle, for now anyway.
There is definitely a point at which you've got too much power to use on the road. My current most powerful car has 130bhp/ton and feels quick enough most of the time. The two other more powerful variants of the same car have 160bhp/ton and 220bhp/ton. I struggle to see how you'd need more than the latter in the real world.
Still, anything for a gratuitous excuse to upload this...
Still, anything for a gratuitous excuse to upload this...
RoverP6B said:
As I said much earlier - a *36 AMG straight-six or M120 V12 swap would be far more interesting. The latter can be made to produce a genuine 700bhp+!
Misses the point a bit, Superturbodiesel is relatively cheap, looks and sounds like a Greek taxi, goes like buggery. Not my bag but I can see why one would.read this entire thread last night- shame its become a bit of a pissing contest.
so what if the figures are a bit off, its way more interesting than "look at my generic 5k bmw coupe-insert E no here", look I've polished it and stuck some bits on.............
Anyway, my brother in law some years ago built a car to try and and capture the world land speed record for diesel engines, which I think was 300 mph ? back then. I believe he used a 16 cylinder truck engine (cummings ?)
that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
so what if the figures are a bit off, its way more interesting than "look at my generic 5k bmw coupe-insert E no here", look I've polished it and stuck some bits on.............
Anyway, my brother in law some years ago built a car to try and and capture the world land speed record for diesel engines, which I think was 300 mph ? back then. I believe he used a 16 cylinder truck engine (cummings ?)
that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
austinsmirk said:
Anyway, my brother in law some years ago built a car to try and and capture the world land speed record for diesel engines, which I think was 300 mph ? back then. I believe he used a 16 cylinder truck engine (cummings ?)
that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
Now that required more detail - photos - anything at all....that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
RoverP6B said:
Goes like buggery? It's got sod all powerband and, when the boost comes in, it'll just sit there spinning its tyres. 400bhp much more achievable in far nicer fashion from the straight six or V12 (the latter was 396bhp stock in basic 6-litre form).
You have watched videos of the superturbodiesel's on YouTube right? Absolutely riotous acceleration!RoverP6B said:
Goes like buggery? It's got sod all powerband and, when the boost comes in, it'll just sit there spinning its tyres. 400bhp much more achievable in far nicer fashion from the straight six or V12 (the latter was 396bhp stock in basic 6-litre form).
Sometimes, you dont want "nice", you want nasty !austinsmirk said:
read this entire thread last night- shame its become a bit of a pissing contest.
so what if the figures are a bit off, its way more interesting than "look at my generic 5k bmw coupe-insert E no here", look I've polished it and stuck some bits on.............
Anyway, my brother in law some years ago built a car to try and and capture the world land speed record for diesel engines, which I think was 300 mph ? back then. I believe he used a 16 cylinder truck engine (cummings ?)
that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
You got to tell us more about this, sounds awesome and crazy in equal parts.so what if the figures are a bit off, its way more interesting than "look at my generic 5k bmw coupe-insert E no here", look I've polished it and stuck some bits on.............
Anyway, my brother in law some years ago built a car to try and and capture the world land speed record for diesel engines, which I think was 300 mph ? back then. I believe he used a 16 cylinder truck engine (cummings ?)
that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
SonicShadow said:
The guy probably thinks tyre technology hasn't moved on from the period the car in his name is from... 
Far from it - but even a lot of modern cars on modern (fat) tyres struggle to put their power down.I haven't seen any videos of this thing but can't imagine it'd be remotely driveable. And, at 400-ish bhp, it's absolutely on the limit - whereas a F/I C36 engine would be capable of far more, and the M120 is barely trying at 400bhp.
QuantumTokoloshi said:
austinsmirk said:
read this entire thread last night- shame its become a bit of a pissing contest.
so what if the figures are a bit off, its way more interesting than "look at my generic 5k bmw coupe-insert E no here", look I've polished it and stuck some bits on.............
Anyway, my brother in law some years ago built a car to try and and capture the world land speed record for diesel engines, which I think was 300 mph ? back then. I believe he used a 16 cylinder truck engine (cummings ?)
that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
You got to tell us more about this, sounds awesome and crazy in equal parts.so what if the figures are a bit off, its way more interesting than "look at my generic 5k bmw coupe-insert E no here", look I've polished it and stuck some bits on.............
Anyway, my brother in law some years ago built a car to try and and capture the world land speed record for diesel engines, which I think was 300 mph ? back then. I believe he used a 16 cylinder truck engine (cummings ?)
that drove a propeller on the back, as oppose to any drive system to the wheels.
he didn't manage it, but one hell of a home build !!
amstrange1 said:
So we're agreed, the dyno is measuring torque, not power?
And regardless of hub or roller speed, it needs correlating back to engine rpm - thus getting this wrong affects the calculated power?
Measurement of torque and axle speed not engine speed.And regardless of hub or roller speed, it needs correlating back to engine rpm - thus getting this wrong affects the calculated power?
100lbft engine at 4000rpm is 76hp. (100*4000/5252=76hp)
driving through a 2:1 gear box at will have 200lbft at the axle at axle speed of 2000rpm.
Ignoring losses.
Using engine rpm: 200*4000/5252=152hp
Using axle rpm: 200*2000/5252=76hp
The hub dyno does not require the operator to input a correlation between roller speed and axle speed as the hub dyno measures the axle speed directly. A rolling road will not know the axle speed as it is only measuring roller speed which is a function of axle speed and tyre circumference and therefore requires an input from the operator.
In the case of a hub dyno, the axle speed can’t be fudged.
SonicShadow said:
The guy probably thinks tyre technology hasn't moved on from the period the car in his name is from...
To be fair, if the power and torque figures are in the ball park then, it being on standard tyres which are what, a 215/60/16 or similar then they have a lot to contend with, tyre tech has moved on but it is still two contact patches, an open diff and fairly normal sized tyres, I expect there may be some wheelspin involved, the videos of these suggest traction can be an issue. My CLS has just under 400 lb/ft and it contains it quite well in the dry with 245 section Pirellis, but it is a lot less torque and delivered in a much less abrupt manner being N/A, with traction control and wider tyres but it will still spin the wheels at lower speeds if you hammer it.
I think Turbo cars tend to suffer more with traction issues due to the spike in torque.
Despite the divided opinions on the output this thing looks an absolute riot to drive and after watching some of the video's online the sound they create is phenomenal!! I reckon you should get some sticky rubber on the back so you can get it gripping in 2nd and 3rd, I bet the acceleration will be immense, especially if you think its that good in 4th gear already!
Keep us posted how you get on with this as I am in the same camp as the others about giving one a go!
Keep us posted how you get on with this as I am in the same camp as the others about giving one a go!
This would be better that would be better, my god some of you can be bloody tedious at times. There's is no real why for the OPs car just a why the bloody hell not! Life's more fun when you do something that shouldn't really be done. I have a Reliant Rialto with a power output of just a tad over 140bhp and weighs only 450 kilos, it horrendous to drive serves no purpose whatsoever makes no sense either it just is.
I like the OPs car it's different good drills OP.
I like the OPs car it's different good drills OP.
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