Dwoon 1st Gear March 3, 2009 Share March 3, 2009 But on paper, thought I saw somewhere earlier in the threads that the top speed is 235km/h. Does that mean that the climb to that speed would be painfully slow then? ↡ Advertisement Link to post Share on other sites More sharing options...
Watwheels Supersonic March 3, 2009 Share March 3, 2009 (edited) On 3/3/2009 at 7:04 AM, Dwoon said: Hitting 850Nm at 2K rpm is one thing..... but can that torque be maintained throughout its rev band or it just tapers away quickly after that??? If so, then can you imagine when cruising along at say 150km/h and say a sudden pickup is required for overtaking..... I wonder how would be the pull then? Without looking at the torque & power graph, its difficult to tell if its really that good in acceleration when at higher speeds. But for 0-100 in 6.8 secs, that's pretty fast..... not really very fast category. You are a petrol head always wanting to go high revs. With that much torque at low rpm means that the engine with low revs will bring you to high speed effortlessly. Overtaking dun need to drop like two gears into high revs to propel the car, just step on the gas pedal and the max torque is reached almost instantly. You have to drive it to experience the torque. For you, you just imagine a TC petrol engine giving you the same torque @ 2k rpm, ignore the bhp figures. Edited March 3, 2009 by Watwheels Link to post Share on other sites More sharing options...
Adawang 1st Gear March 3, 2009 Share March 3, 2009 One silver one, diesel with petroleum co stickers zoomed by me , with engine revving was cruising at Pasir Panjang. He came to red light stop at South Buona Vista. When lights turn green, he gunned the engine and filtered left at Y junction, towards Haw Par Villa. I gunned mine and go towards Buona Vista. Link to post Share on other sites More sharing options...
Kyojin 1st Gear March 3, 2009 Share March 3, 2009 that silver one is a V6 TDI. there are only 2-3 R50s in Sg. Link to post Share on other sites More sharing options...
Kyojin 1st Gear March 3, 2009 Share March 3, 2009 i would say so... it's a high torque, low bhp engine. acceleration slows down dramatically after the 100km/h mark. why do you think cabs can sprint so fast? take them down the highway and they lose steam after 120km/h Link to post Share on other sites More sharing options...
Blueegg Clutched March 3, 2009 Share March 3, 2009 Aiyo. You guys really need to drive a modern turbo diesel. All this misinformed talk on diesels is making me laugh. If what you say were true, the poor petrol driving people on the German unrestricted Autobahn would be stuck for hours behind "slow moving" diesels, which just happen to be more than half of the total vehicular population. Link to post Share on other sites More sharing options...
Dwoon 1st Gear March 3, 2009 Share March 3, 2009 I'm not stating that higher revs get you the torque/power. (This depends on where the power band is) But the fact that max torque is attained at 2K rpm shows that power is on tap from stationary or low speeds. But if that torque cannot be maintained at higher rev of say 3 to 4K rpms or higher, then what would be the drive response? (would it follow the same characteristics of smaller turbo whereby max torque comes early but also dies early?) I admit I have no idea of the actual drive response, which is why I'm asking. - What kinda rpm would the car be running at say 150-160km/h (touring speed?) - If the rpm at 150km/h is already at say 4K rpm, would that be past the max torque band to allow good acceleration from that speed? (already past the turbo's efficiency range?) Link to post Share on other sites More sharing options...
Mustank Hypersonic March 3, 2009 Share March 3, 2009 Kyojin say is very true my one turbo diesel 0-20 20-50 50-90 90-130 130 onwards: never try before (scared ) Link to post Share on other sites More sharing options...
Dwoon 1st Gear March 3, 2009 Share March 3, 2009 Please laugh more. You're obviously not in sync with the discussion. Link to post Share on other sites More sharing options...
Fcw75 Hypersonic March 3, 2009 Share March 3, 2009 On 3/3/2009 at 8:00 AM, Blueegg said: Aiyo. You guys really need to drive a modern turbo diesel. All this misinformed talk on diesels is making me laugh. If what you say were true, the poor petrol driving people on the German unrestricted Autobahn would be stuck for hours behind "slow moving" diesels, which just happen to be more than half of the total vehicular population. Doesn't matter lah. Some people will always think their turbo petrol engine is very very fast. That's bcoz they haven't tried the pickup of a turbo diesel. Some people is after pickup, some people is all for top speed. Link to post Share on other sites More sharing options...
Dwoon 1st Gear March 3, 2009 Share March 3, 2009 Top speed (terminal velocity) is usually determined by gearing and engine displacement. Can't alter this much as its rather fixed. But its how fast you reach there. Or how fast from one set speed to another within the velocity limits. Nothing to do with petrol or diesel. (more with the turbo & its tune) In case anyone wants to know the limits of your car.... by gearing. http://www.kabamus.com/garage/gears.html Link to post Share on other sites More sharing options...
Solar Turbocharged March 3, 2009 Share March 3, 2009 some read-up for those who are interested http://www.drive.com.au/Editorial/ArticleD...ArticleID=56915 Link to post Share on other sites More sharing options...
Viceroymenthol 6th Gear March 3, 2009 Share March 3, 2009 If Touareg, Cayenne and Q7 are related, won't it make sense to buy a lower end Cayenne (S? Turbo?) for the same money as the R50 V10 TDI? Link to post Share on other sites More sharing options...
Tomsss Neutral Newbie March 3, 2009 Share March 3, 2009 you guys should youtube the Touareg's acceleration and see for yourself... if turbo diesels really lose steam after 150km/h Link to post Share on other sites More sharing options...
Kyojin 1st Gear March 3, 2009 Share March 3, 2009 On 3/3/2009 at 8:00 AM, Blueegg said: Aiyo. You guys really need to drive a modern turbo diesel. All this misinformed talk on diesels is making me laugh. If what you say were true, the poor petrol driving people on the German unrestricted Autobahn would be stuck for hours behind "slow moving" diesels, which just happen to be more than half of the total vehicular population. 1. i've driven the R50 amongst many other diesel passenger cars, so i think i know what i'm talking about. 2. you are misinformed about the Autobahn. there's only a short stretch on the Autobahn that has no speed limit. 3. nobody here is saying or doubting that modern turbo diesel cars are slow. we are mainly discussing the power delivery, torque vs horsepower and how fast it gets to speed. Link to post Share on other sites More sharing options...
Kyojin 1st Gear March 3, 2009 Share March 3, 2009 On 3/3/2009 at 8:02 AM, Dwoon said: I'm not stating that higher revs get you the torque/power. (This depends on where the power band is) But the fact that max torque is attained at 2K rpm shows that power is on tap from stationary or low speeds. But if that torque cannot be maintained at higher rev of say 3 to 4K rpms or higher, then what would be the drive response? (would it follow the same characteristics of smaller turbo whereby max torque comes early but also dies early?) I admit I have no idea of the actual drive response, which is why I'm asking. - What kinda rpm would the car be running at say 150-160km/h (touring speed?) - If the rpm at 150km/h is already at say 4K rpm, would that be past the max torque band to allow good acceleration from that speed? (already past the turbo's efficiency range?) the torque stays pretty constant from 2000rpm, so it continues pulling. cruising at 100km/h, it's below 2000rpm. 150km/h it's about 2500rpm. at 100km/h, if you force the trans to drop a gear or two, the torque can be felt immediately, pulling all the way to the 4200rpm redline. i haven't tried accelerating from 150km/h, but from 2500rpm, there's still quite a lot of huff left. in fact even when you are in 6th, the engine is so flexible that continues pulling. Link to post Share on other sites More sharing options...
Dwoon 1st Gear March 4, 2009 Share March 4, 2009 Thanks for the editorial on it. Hmmm.... it even makes comparisons against cheapo cars such as the Ford Territory Turbo..... which is what I Link to post Share on other sites More sharing options...
Dwoon 1st Gear March 4, 2009 Share March 4, 2009 I understand that diesel cars don't do high revs.... but its redline is at 4.2K only.... hmm.... I wonder what kinda flow is being experienced. Then again, its a large displacement engine at 5l.... probably uses a huge ass snail to get that high torque ↡ Advertisement Link to post Share on other sites More sharing options...
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