 | Home > Puma (Tdci) > Revs and Gears |
 
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| Cheshire110 Member Since: 26 Jul 2013 Location: Cheshire/London Posts: 2755  
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Didn't know they went up to 3k!
In seriousness though, it depends on a number of things. The revs needed increases with speed (ie you can drive happily at 1200 in second but more like 1800 in 5th/6th to have any pulling power.) I tend to try to change up around or below 2500 generally just to keep noise down in normal driving, but in the higher gears when overtaking/accelerating (in the outside lane past slower traffic etc) I can get as high as 2.8. To be honest I find that the engine makes a god awful noise at approaching 3 but I think it's fine to take it. (Some transits with the 2.4 and 5 speed cruise at nearly 3200 at 75/80ish!) I find there is nice torque 15000-2300 so try to stay there when driving. But it depends a lot on the situation. As I said though I have never found a need to get to 3, and it's pointless trying to accelerate below 1600 although cruising there is ok. The engine will take pretty much whatever you throw at it Cheers, David Land Rovers of all shapes S3 onwards… Daily is a 110 V8. |
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22nd Nov 2013 10:26am |
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| lonewolf Member Since: 23 Oct 2013 Location: North East England Posts: 210 
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Cheers David, thanks for your reply. Prior to Defender ownership the only diesel I had driven was a VW caddy van and it had an indicator to tell you when to change up, which initially I thought were really low revs, but when I got more used to it was ok and made sense. As I said being used to petrol, (cars and bikes), I'm always worried that I'd bog the motor but diesels seem to have lots of low down torque to use opposed to petrol.
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22nd Nov 2013 10:49am |
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| Cheshire110 Member Since: 26 Jul 2013 Location: Cheshire/London Posts: 2755
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Yeah with a diesel it's all about the torque, you'll find there's little point revving more than it wants to.
From listening you can hear it wants to change, and if you rev whilst putting a little pressure on the gearstick pushing it out of the gear it's in, then it will want to dip into the next gear at a certain point. If you're getting the juddering you're too low revving, and with time to can hear a distinct change in engine noise at somewhere above 2.6/2.7. I'm only 18 and struggled to start but after a year with it I know exactly what gear it wants to be in and you get used to jumping around gears more for torque more in a diesel than a petrol. Cheers, David Land Rovers of all shapes S3 onwards… Daily is a 110 V8. |
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22nd Nov 2013 11:01am |
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| timbar Member Since: 30 Jul 2013 Location: Milton Keynes Posts: 245 
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At 2.5k mine rattles like someone's loosely bolted a tin tea tray into the engine bay. Is that when the turbo kicks in, or thereabouts? 2009 110 XS Station Wagon |
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22nd Nov 2013 11:39am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20371
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Rattles in what gears? High gears?
Regarding the revs, simple really. Speed up change up, slow down change down. More gear changes to be done on the Defender Puma than a petrol but remember it's a 6 speed too. Immense torque it's best to be in a lower gear on hill climbs but it comes with practice. If your in a higher gear and even the slightest revs drop off, drop a gear and you'll soon power up on the power band. Un laden. Just driving practice gets you a custom to it. You don't want to rev it mad but nor keep it ticking over. Very low revs won't get you anywhere especially in higher gears because there's no power there but revving high won't be much different. In lower gears doing rev it to hard in higher gears it's nog so bad to keep up momentum. Oh and use first gear too, that is what it's there for when required. $W33T $0U7H3RN $UG4R 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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22nd Nov 2013 12:00pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2638  
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Until your truck gets to operating temperature, avoid revving past 2000 too much. Once it is warmed up, you can drive it like you stole it. Note that warmed up does not mean when the temperature gauge shows that - you need to know that the oil is running at hot idle pressure, or at least that coolant temperature is > 80C.
I usually change up between 2500 - 3000. Sometimes when gunning it up a long hill I will change from 4th to 5th at 4000. -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged 
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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22nd Nov 2013 12:01pm |
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| lonewolf Member Since: 23 Oct 2013 Location: North East England Posts: 210
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Cheers chaps, what I didn't mention was the fact that the rev counter goes up to 7000 (I think) but obviously I wouldn't want to go anywhere near that, even if it would. What I'm getting at is how far up the scale is reasonable in normal use, ie 3, 4, 5? I've never taken it past about 3.5. i've been driving for more years than I care to remember but like I said earlier I'm not used to diesels. Mind though as time goes on I'm getting more used to it and driving it is a hoot
 Actually quite surprised at how nippy it can be in certain gears.
Thanks again for the replies, everything helps. |
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22nd Nov 2013 12:15pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20371
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I'd say upto about 4k but that shouldn't need to be much at all. 2.5 / 3k are around the average. $W33T $0U7H3RN $UG4R
🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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22nd Nov 2013 12:21pm |
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| timbar Member Since: 30 Jul 2013 Location: Milton Keynes Posts: 245
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Thinking about it, I notice a change when out of gear and raise the revs; there's a noticeable step change in the sound about 2.5k. Guessed it was just something hitting a resonant frequency and sounding different. 2009 110 XS Station Wagon |
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22nd Nov 2013 12:30pm |
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| Cheshire110 Member Since: 26 Jul 2013 Location: Cheshire/London Posts: 2755
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Yeah seems others agree too
 3-3.5 is the most you'd ever need or want to go to.
I can't help feeling that when up to temp that a good blast at 3+ must be good too... Give everything a blast out! Cheers, David Land Rovers of all shapes S3 onwards… Daily is a 110 V8. |
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22nd Nov 2013 5:01pm |
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| Cuthbert Member Since: 26 Oct 2013 Location: Up North Posts: 1535 |
No-one got those graphs that show torque against engine revs in each gear?
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22nd Nov 2013 6:03pm |
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| Pickles Member Since: 26 May 2013 Location: Melbourne Posts: 3784  
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G'Day David, "15000"??!!..Who your tuner, I want some of that!! Regards, Pickles. |
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22nd Nov 2013 9:23pm |
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