T. Spark
Guest
Your right about PD130 mapped V Std LCR (ish). Jabba's maps (not dissing them mind) and the rest yo!
Sorry a focus rs is 215bhp 230 lbft and it's near 150k lighter than a lcr. Most dyno around 230 standard. which means same power as lcr and more torque than a standard lcr, let alone the weight issue.
I can beat most things, provided im in the right gear, and I catch them in the wrong one.
T. Spark
Guest
My 2p.
its not all about BHP figures its how the torque curve comes in and holds. Torque accelerates the car not BHP.
Ibiza and Polo's alike are light cars and once mapped will go quite quick. So keeping up with biggers heavier cars like Leons in gear near the ton mark is not uncommon and not suprising (i am not saying a polo can beat a mapped leon - i dont want to be involved in this arguement).
In fact it makes sense because for a car to pull ahead they must have quite a bit more power, like 25-50 bhp more. 10 BHP here is there might mean half a car length in a drag depending on driver skill.
As for bringing in petrol 1/4 times...don't bother their gearing is much more suited for 1/4 times.
its not all about BHP figures its how the torque curve comes in and holds. Torque accelerates the car not BHP.
Ibiza and Polo's alike are light cars and once mapped will go quite quick. So keeping up with biggers heavier cars like Leons in gear near the ton mark is not uncommon and not suprising (i am not saying a polo can beat a mapped leon - i dont want to be involved in this arguement).
In fact it makes sense because for a car to pull ahead they must have quite a bit more power, like 25-50 bhp more. 10 BHP here is there might mean half a car length in a drag depending on driver skill.
As for bringing in petrol 1/4 times...don't bother their gearing is much more suited for 1/4 times.
And LCR come out on dyno's at 210/225bhp dead on dont they
you kinda missed my point.
did i not say they produce samilar power
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Earlier scotty1 wrote
for example a map to produce 150bhp at only 3750rpm and the rest 110bhp is not as good as a map to produce a consitance 140bhp throughout the rev range
That would be a neat trick. The only reason for increasing the engine rpm is to deliver more power at the road wheels. If the power stops rising as you increase rpm, then you change up.
Power(bhp)=Torque(lb-ft) x rpm/5252
Torque peaks at low revs (1800-2200), then gently declines as rpm rises up to the combustion speed limit (for diesels) or mechanical limit for petrol engines, where the torque drops off like a stone. Once you run out of power increase there is no point in making the engine go round faster, so peak power defines peak rpm.
Peak power rpm is higher for a petrol engine. Away from the lights (i.e. at low rpm) the peak torque figure is a better indicator, as it occurs at low rpm. Diesels have more torque (they have higher compression ratios and make bigger bangs) so they match petrol cars with higher peak power figures.
Peak Torque
So your TDI110 or 100 is comparable to an LC away from the lights. That's without factoring in the weight of the car.
Looking at peak power:
The big difference is that the petrol car has to go to 6000 rpm compared to the diesel's 4000 - the diesel gets there quicker. Many petrol drivers never get to their peak power rpm because of the noise it makes.
In road-racing terms, where gearchanging and low rpm performance is important, the diesel has more grunt. But in most cases, these contests are decided by the ability of the driver rather than the car's absolute performance.
By the way, please publish when and where you are performing these "races" so that I can avoid the area. I don't want to be there when you have your accident.
for example a map to produce 150bhp at only 3750rpm and the rest 110bhp is not as good as a map to produce a consitance 140bhp throughout the rev range
That would be a neat trick. The only reason for increasing the engine rpm is to deliver more power at the road wheels. If the power stops rising as you increase rpm, then you change up.
Power(bhp)=Torque(lb-ft) x rpm/5252
Torque peaks at low revs (1800-2200), then gently declines as rpm rises up to the combustion speed limit (for diesels) or mechanical limit for petrol engines, where the torque drops off like a stone. Once you run out of power increase there is no point in making the engine go round faster, so peak power defines peak rpm.
Peak power rpm is higher for a petrol engine. Away from the lights (i.e. at low rpm) the peak torque figure is a better indicator, as it occurs at low rpm. Diesels have more torque (they have higher compression ratios and make bigger bangs) so they match petrol cars with higher peak power figures.
Peak Torque
Code:
Car lb-ft @ rpm =BHP
LCR 207 2200 87
LC 173 2000 66
TDI90 155 1900 56
TDI110 173 1900 63
TDI100 177 1900 64
TDI130 229 1900 83
TDI150 236 1900 85So your TDI110 or 100 is comparable to an LC away from the lights. That's without factoring in the weight of the car.
Looking at peak power:
Code:
Car BHP @ rpm =lb-ft
LCR 225 5900 200
LC 180 5900 160
TDI90 90 3750 126
TDI110 110 3750 154
TDI100 100 4000 131
TDI130 130 4000 171
TDI150 150 4000 197The big difference is that the petrol car has to go to 6000 rpm compared to the diesel's 4000 - the diesel gets there quicker. Many petrol drivers never get to their peak power rpm because of the noise it makes.
In road-racing terms, where gearchanging and low rpm performance is important, the diesel has more grunt. But in most cases, these contests are decided by the ability of the driver rather than the car's absolute performance.
By the way, please publish when and where you are performing these "races" so that I can avoid the area. I don't want to be there when you have your accident.
i used to drive an Ibiza 130TDi FR, and know for a fact from experience that from 70mph in 6th gear alongside a remapped LCR doing the same 70mph in 6th, the ibiza pulled away quicker to 110, then the LCR hit it's mark and left me for dust.
Also, i follewed a 225BHP mapped LC up quite a steep hill, and had to keep easing off, this doesn't mean if i was in front that i would have pulled away tho
when we stopped, the guy told me he was trying to get away, and asked if mine was a 160 or 180 bhp, when i told him it was a standard 130diesel he could not believe it!!
I now drive a chipped 130tdi Audi, and although i don't confess to be able to beat a lot, i can keep up with cars with a much higher power. Specially through corners
Stu
Also, i follewed a 225BHP mapped LC up quite a steep hill, and had to keep easing off, this doesn't mean if i was in front that i would have pulled away tho
when we stopped, the guy told me he was trying to get away, and asked if mine was a 160 or 180 bhp, when i told him it was a standard 130diesel he could not believe it!!
I now drive a chipped 130tdi Audi, and although i don't confess to be able to beat a lot, i can keep up with cars with a much higher power. Specially through corners
Stu
brad1
Guest
sisson dont like factsbut did have 1 hell of a 130tdi ibiza!!!!!!
fair play for challenging, but the torque and weight of an ibiza are astounding!!
also, think about the powerbands and torque curves for both cars.
at 70mph in 6th gear, a mapped LCR is probably under the turbo and experiencing lag, hence why, when it started to go, i didn't stand a hope in hell's chance!!
all about reading the whole post, not just 1 little bit then flaming it!!!
Stu
fair play for challenging, but the torque and weight of an ibiza are astounding!!
also, think about the powerbands and torque curves for both cars.
at 70mph in 6th gear, a mapped LCR is probably under the turbo and experiencing lag, hence why, when it started to go, i didn't stand a hope in hell's chance!!
all about reading the whole post, not just 1 little bit then flaming it!!!
Stu
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T. Spark
Guest
Sissons mate, you have to remember diesel's are faster than ANYTHING yo!
What I find most amusing is the fact like myself, you have owned a 'tuned' diesel, and have figures to say exactly how fast it is 'legally'
But you dont like facts mate, end of! 225bhp Leons are slower than 130bhp diesel Ibiza's mate, word
Quick question...
If you want max acceleration from a pd130 60-100... should you keep it in 5th with your foot flat down or change up to 6th when you hit 3k revs?
If you want max acceleration from a pd130 60-100... should you keep it in 5th with your foot flat down or change up to 6th when you hit 3k revs?
off topic : i would suggest booting it down (change gear) to get the most out of the turbo... you may loose a second though as your lowering the revs...
Think my 5th gear starts getting a bit sluggish past 80-90 (cant remember)
Though supose revving it gets the most BHP.
Think my 5th gear starts getting a bit sluggish past 80-90 (cant remember)
Though supose revving it gets the most BHP.
Also, i follewed a 225BHP mapped LC up quite a steep hill, and had to keep easing off, this doesn't mean if i was in front that i would have pulled away tho
when we stopped, the guy told me he was trying to get away, and asked if mine was a 160 or 180 bhp, when i told him it was a standard 130diesel he could not believe it!!
So the above doesn't mean you kept up with a 225bhp cupra...
Reason being I got trounced by a Focus 1.8 TDCi t'other day 70-110 on my private track. 115bhp standard :|
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