300tdi or td5

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v6mon

New Member
Posts
42
Location
castleford
hi all
am new member and im wanting to get a disco
i;ve got about £3000 to spend but dont know wether to go for reliable 300tdi or early td5
please help

cheers :confused:
 
Doubtful £3k will get you a TD5 in good nick to be honest.
Even nice ones will eventually have all the common problems & more & cost you what the cars worth-but I like mine whatever it throws at me.
I only got one as I prefer the disco2 to disco1-but if you dont want a money eating motor-buy a 300...
 
thanks all

want to use it as family car and for towing a 1200kg caravan

SO i am buying my mates 300tdi 1996 county
which is an import auto with twin roof and air con

so heres hoping :crazy_driver:
 
v6mon said:
thanks all

want to use it as family car and for towing a 1200kg caravan

SO i am buying my mates 300tdi 1996 county
which is an import auto with twin roof and air con

so heres hoping :crazy_driver:
Click to expand...
I wish you all the best. Personally I wouldn't tow with an auto box, it's all too easy to overheat the hydraulic fluid on long uphill gradients. My 4 litre, straight six Jag Sovereign could pull the side of a house down as long as the gearbox was cool, but was weak as weasel **** when hot. If you must tow with an auto box stick a bigger oil cooler on it. A 300tdi with manual box is the better choice.
 
LinC said:
I wish you all the best. Personally I wouldn't tow with an auto box, it's all too easy to overheat the hydraulic fluid on long uphill gradients. My 4 litre, straight six Jag Sovereign could pull the side of a house down as long as the gearbox was cool, but was weak as weasel **** when hot. If you must tow with an auto box stick a bigger oil cooler on it. A 300tdi with manual box is the better choice.
Click to expand...
Surely the Disco is designed for towing (unlike a Jag), so the oil cooler should be big enough. The main thing that heats up the box on hills is constant gear changing. The recommendation is to change down manually on hills (and remember to change back up afterwards???). Manuals aren't always better - the 200TDi has a known fault which causes the manual box to lock in third after a lot of motorway-speed towing.:)
 
PASTMASTER said:
Surely the Disco is designed for towing (unlike a Jag), so the oil cooler should be big enough. The main thing that heats up the box on hills is constant gear changing. The recommendation is to change down manually on hills (and remember to change back up afterwards???). Manuals aren't always better - the 200TDi has a known fault which causes the manual box to lock in third after a lot of motorway-speed towing.:)
Click to expand...

Never heard of a LT77 doing that!
Would still prefer a manual for towing though.
 
PASTMASTER said:
Surely the Disco is designed for towing (unlike a Jag), so the oil cooler should be big enough. The main thing that heats up the box on hills is constant gear changing. The recommendation is to change down manually on hills (and remember to change back up afterwards???). Manuals aren't always better - the 200TDi has a known fault which causes the manual box to lock in third after a lot of motorway-speed towing.:)
Click to expand...


NO NO NO!!!!

What heats up automatic gearbox oils most is the normal slippage in the torque converter, or the BIG slip when the revs are under about 2,000 rpm. The recommendation to change down manually is BECAUSE this increases engine speed (torque converter rotates at that speed) specifically to try to keep the TC speed UP past the point where TC slippage develops. At 3,000 rpm for example, TC slippage is very low. The more the slip the more heat it makes. Worst case is stopped car, in gear, heaps of throttle: also known as "stall test". FIVE SECONDS of that is more than plenty. 30 seconds might have the oil so hot the smoke starts, and soon after that it goes on fire big time.

Only small amount of heat will be generated in the planetary gearsets, and a tiny amount in the brake bands and clutchpacks that create the gears. If any of these units FAIL they will slip, and that makes heat, but you won't be bothered by that as the car won't drive far anyway.

Even if you have a LOCK UP TORQUE CONVERTER, unless it is actually locked up the TC will be slipping and generating HEAT which goes into the transmission fluid. The 'Lock-Up TC only locks up after a certain road speed has been reached which may not be possible when towing a caravan. The heavier the load you are pulling, and the steeper the slope, and the hotter the day ... and the more ratty the kids are ... sounds like caravan towing to me .. and that oil gets Goddam hot. It could easily top TWO HUNDRED degrees CENTIGRADE, which is almost 400 real F degrees.

You need a BIG oil cooler added to the transmission (gearbox) cooling system, and if it were me I would ADD one that exchanges heat from the hot oil direct to the coolant water. Water is about two thousand times as effective at absorbing heat as air is. Leave the present cooler in the flow and add an oil-water cooler in series.

And if you have an electric fan, dump it in favour of the original LR fan whenever you are towing. That's my advice. Leccy fans can't shift nearly as much air as reliably as a bloody big fan driven direct by the engine, AND the real fan is always cooling the whole engine bay which the leccy fan does not. That is definitely worth doing as the turbo hot end and the first couple of feet of the downpipe may get red hot. A good constant draught of air will help to stop that heat from getting OTT.

CharlesY
 
Last edited:
cheers for all advice
did buy the 300tdi discovery auto - to good an offer to miss
is an import and still standard with cat,egr and viscos fan and runs brill,quick off mark so will be leaving std for now if any thing it runs abit cold temp gauge never reachs above quarter
as for towing went off last week with van to dales(up and down)and discovery was faultless still ran cool tho
will keep an eye on temp and fit a bigger/or another cooler if needed
have also heard that changing down when climbing and slipping stops overheating will find out come august when drag van and family off to cornwall

rd
 
v6mon said:
will gearbox oil change help
Click to expand...


Yes it will, as will cleaning the oil pick up strainer in the gearbox oil pan, and while you are there slap on the doughnut magnet ring you extracted from an old speaker. It is amazing how much cleaner auto trans fluid stays if there's a decent magnet in there..

If you change the oil, buy the best transmission fluid you can get.

This is the one time I might suggest a synthetic oil will be top choice.
You should carry two litres of it in the back as spares.

CharlesY
 
PASTMASTER said:
the 200TDi has a known fault which causes the manual box to lock in third after a lot of motorway-speed towing


Didn't say it always happens. But it did happen to me and my local Indie reckoned it was a common fault.
Click to expand...


That's an urban myth, used by many garages to extract extra cash from unsuspecting owners.

I would like to hear what the experiences are of the LandyZoners, like how many, IF ANY, of them have had a manual Landy gearbox lock up after a long drive in 3rd gear.

It is worth remembering, in all Landy manual gearboxes, FOURTH gear is a DIRECT "gear", involving NO gears in the gearbox - just power in one end and straight out the other.

Whenever working hard, espcially towing a trailer, use FOURTH gear.

Drive as gently as possible in all other gears.

CharlesY
 
Last edited:
Hedgehog70 said:
What? So you now have 2 :)

T
Click to expand...
no i sold 300tdi and bought this bargain basement v8, couldnt resist it just hope that she proves to be a reliable workhorse. havent had her long so dont know what theyre like,hope i dont regret getting rid of tdi or even spending more to invest in a td5,
comments gladly excepted :welcome2:
 
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