Quote:
Originally Posted by //M Great pics. It looks great in black. BTW how is the overall highway experience in the Polo Tdi? Does the 3-pot motor feel underpowered on the twisters? Please give some info on the much talked about turbo-lag in the Tdi. |
Thanks a lot. Highway driving experience with Polo-Tdi is simply Great! Be it overtaking or simply cruising. If you scan through my previous posts on this thread you will get a fair idea. Look at "Gear - Speed - RPM". Mid range power is also very good.
AFAIK, 3 pot or 4 pot - 1200CC, 75 Bhp, 1.8 Kg - will mean the same in terms of performance or longevity. Refinement will be better in a 4 pot. A well coupled Turbo and a well matched gear box, will make all the difference. I did not feel it is under-powered.
This is from my very limited knowledge:
As we all know, a Turbo charger uses a turbine which is driven by the exhaust gas. When the exhaust gas spins the turbine, turbine rotates and pushes in more air in to the engine, to aid proper combustion. Until the exhaust gas is able to spool the turbo, the car will be behaving like having a naturally aspirated diesel engine.
Important points are:
- Turbine should be light enough for the exhaust gas to start spinning it, at a low RPM.
- If turbine spins very fast and lot of air rushes in, engine might go off.
If the turbine is very light, Lag will be less since it can start rotating earlier, but it will effect top end performance. If the turbine is not so sensitive, lag will be more, but it can carry on effectively for a longer time - top end power will be good.
With a single turbo, achieving low-end, mid-range and high-end power will be a big problem for any manufacturer. Variable Geometry Turbo - reduces this problem only to a certain extent. Twin-Turbo will solve this problem, since we can have one for low-end and the other for the high-end.
IMHO,
Figo has minimum Turbolag, but not so great top-end power.
Polo has Turbolag, but has a good mid-range and top-end power.
Punto's Turbolag is
lesser than Polo and has a decent top-end power. With VGT, it might improve. But again, it depends on how it is tuned.
i20 also has lag - but, since it has a bigger 1400cc engine, we feel the pinch that much lesser.
Turbolag means you have to keep changing gears often in traffic which is
flowing and also in
Ghat section. If you do not mind doing this, it will not effect you. With Polo's gear box, I do not have any problem in using it. Also, I do not have to worry about FE, since it is very good. In Polo-Tdi, upshifting at around 2300RPM or higher if required is the key. This is a rev-happy engine and you can relax!
Interestingly - I have read that AUTO geared diesel cars will not face the lag, even if it has a single turbo, since RPM can be maintained above the required limit easily.
Guru's - Please correct me if I am wrong.
Quote:
Originally Posted by poloman Amazing pictures Chetan. I liked 2,3 and 4 the most. I also would like to know how the car behaves in Ghats? Any overheating or stalling issues as reported in some of Figo threads? My Polo is going to cover around 1200Km this weekend.Any advice for me? |
Absolutely no problems Poloman. It was a pleasure driving it. I mainly used the first 3 gears - not much breaking was required.
No specific advice for your trip. While coming back, you would have crossed 1000kms on your ODO. Try to Rev the engine up to 6000 RPM in all gears except 1st. For Petrol Polo, Red line is after 7000 RPM. This will set up things and might reduce engine noise also. Happy Motoring!!
Quote:
Originally Posted by rejoycjohn @ Chetan .. awesome pics :-)
you kept the word . I wish the tyres were 195/55/R15.May be once the car tyre gets due for a change you can think of that option.
What is the expected tyre life ?
The rear mud-flaps , I somehow not liking it much .It stands out from the overall classy look of the car - I felt the same with Punto mud-flaps too.
I like those that we get with Zen , I mean the old zen .
After market options for the same under consideration? |
My pleasure! 55 may be thinner for cushioning? I think it should last for atleast 60,000Kms. I heard that Polo has a Tube-Tyre! Can you tell me how to verify this?
I agree with you on the mud flaps. I will definitely change it, as and when I get an option.
Quote:
Originally Posted by theragingbull Beautiful place. Beautiful car. Beautiful pics
Chetan, have you put sun-films? |
Thanks.
Yes. Llumer Natural 35 SR.