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BigWheels

Member Since: 21 Mar 2010
Location: Somerset
Posts: 1405

2008 Defender 90 Puma 2.4 XS CSW Tonga Green

How can I lower 1st gear in high box on a Puma?

When going on a LR Experience treck, one of the LR guys said that one of the reasons TDCis have anti-stall fuel jetting is because 1st gear is higher than on TD5s (& TDis?).

This might explain why some farmers prefer pre TDCi model. They can't stay in high box 1st gear while following flocks & herds down a lane.

What can be done to help actually or simulate a lower 1st gear in high box, (without going into lower box, clutch slipping/s & snatching) on a TDCi? Land Rover Defenders. 67 years heritage, minimal appearance changes, still going strong all over the world. Not a fashion vehicle, but fashionable to own. Made for the needy, not the greedy. Ta ta Defender

20th Aug 2012 6:39pm

willy eckerslike

Member Since: 15 Jun 2009
Location: North yorks
Posts: 1789

2007 Defender 110 Puma 2.4 HCPU Keswick Green

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20th Aug 2012 6:49pm

ericvv

Member Since: 02 Jun 2011
Location: Near the Jet d'Eau
Posts: 5816

2009 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black

Must have been smoking dope

. 1st gear on a Puma is lower than on a Td5.

Guess this was the LR Experience guy who said something like that?

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20th Aug 2012 6:50pm

spudfan

Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 4678

The first gear in my Puma tdci is lower than in the tdi. One of the complaints about the td5 when it came out was that first gear was relatively high and some people were inclined to stall it. The Puma tdci was fitted with a lower first gear to get around this and it is suited to taking off with a trailer with no bother at all.There was a thread on this site sometime ago about people avoiding first gear in the Puma and taking off in second.Try first gear low in the Puma, it is an experiece! I don't think the anti stall was fitted to compensate for the Puma tdci first gear. Some of the techno inclined blokes will come on to give you the full briefing on that. 1982 88" 2.25 diesel
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20th Aug 2012 7:00pm

dgardel

Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

Re: How can I lower 1st gear in high box on a Puma?

BigWheels wrote:
When going on a LR Experience treck, one of the LR guys said that one of the reasons TDCis have anti-stall fuel jetting is because 1st gear is higher than on TD5s (& TDis?).

This might explain why some farmers prefer pre TDCi model. They can't stay in high box 1st gear while following flocks & herds down a lane.

What can be done to help actually or simulate a lower 1st gear in high box, (without going into lower box, clutch slipping/s & snatching) on a TDCi?

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20th Aug 2012 8:16pm

LR90XS2011

Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3643

2011 Defender 90 Puma 2.4 XS CSW Galway Green

Im led to believe the idle jack (anti stall) was fitted because low first is so low that it can be dangerous on decents, this is because without it the wheels dont rotate quickly enough to stop the car sliding. Personally I like the fact the car becomes almost unstoppable in low first DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy

20th Aug 2012 8:18pm

Gareth

Member Since: 12 Dec 2011
Location: Bramhall
Posts: 1105

TD5 has anti-stall as well. 2021 Defender 110 X-Dynamic HSE D300 MHEV
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20th Aug 2012 8:22pm

T1G UP

Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

2011 Defender 110 Puma 2.4 XS CSW Orkney Grey

Re: How can I lower 1st gear in high box on a Puma?

BigWheels wrote:
When going on a LR Experience treck, one of the LR guys said that one of the reasons TDCis have anti-stall fuel jetting is because 1st gear is higher than on TD5s (& TDis?).

This might explain why some farmers prefer pre TDCi model. They can't stay in high box 1st gear while following flocks & herds down a lane.

What can be done to help actually or simulate a lower 1st gear in high box, (without going into lower box, clutch slipping/s & snatching) on a TDCi?

not sure on ratios of the 6 speed but a tdci has a higher ratio TB. 1st gear is to low IMO. with some larger tyres on it would be better and i use the 2nd gear no throttle take off alot more now on the flat or down hill.

20th Aug 2012 8:46pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17417

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

LR90XS2011 wrote:
Im led to believe the idle jack (anti stall) was fitted because low first is so low that it can be dangerous on decents, this is because without it the wheels dont rotate quickly enough to stop the car sliding. Personally I like the fact the car becomes almost unstoppable in low first

Idle jack and anti-stall are completely different functions for completely different purposes. Your description of the idle jack is correct, but that isn't anti-stall.

You could lower a Puma's ratios by fitting a Td5 transfer gear set, but overall it would be way too low and probably dangerous on steep descents with poor adhesion.

20th Aug 2012 9:51pm

fixit

Member Since: 15 Mar 2012
Location: Sunny devon
Posts: 66

There is a lot to be said for driving downhill when its slippery as the wheels won't slide as easy then

I have only driven a puma defender a couple of times but it is lower geared than a tdi IMO

And most of the farmers i know who have them use second to pull off unless towing

Don't know about following sheep though

may be they are lame

24th Aug 2012 5:35pm

fixit

Member Since: 15 Mar 2012
Location: Sunny devon
Posts: 66

ericvv wrote:
Must have been smoking dope . 1st gear on a Puma is lower than on a Td5.

Guess this was the LR Experience guy who said something like that?

That some pretty good

man

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I aint seen that in 20 years

24th Aug 2012 5:54pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8044

2011 Defender 110 Puma 2.4 USW Stornoway Grey

does a higher gearing not give a lower speed?

1st gear in a puma is 33% slower than corresponding 1st gear on R380/LT77.
6th is 22% higher.

if the end result is you want to go slower in a TDCI then fit a 1.4 or 1.6 Tbox or 4.11 diffs. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
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25th Aug 2012 7:06pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8044

i also think you are getting anti stall and idle jack mixed up.

idle jack comes in when you are in 1st low range to raise the revs to 1100rpm for the reasons as above wrt to descents and not having too much engine breaking.

anti stall works in all the gears. its more beneficial and noticeable in the lower numbered gears. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

25th Aug 2012 7:08pm

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