can anybody shed light on which cap to use 4.4 v8 53 plate bought one on line and was sent a 140 mine being 200 after fitting 140 it was leaking no mater how tight I made it . I thought it might be a faulty cap . I seem to be going through header tanks about 1 every 18 months or so even after fitting 80deg thermostat. If she is meant to run on a 200 cap will fitting a 140 be ok anybody done this ? read a post what said if you run a 140 the water pump would not turn properly cant see why as pump is belt driven anyone changed 200 to 140 ???

Re caps advise is only buy genuine ones.
Here's why
https://www.aulro.com/afvb/l322-range-rove...-only.html

A 53 plate is meaningless to anyone outside the UK.

Why can't you blokes use model years?  Ron B. VK2OTC
2003 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

hover your mouse over the little car under the posters username and that will conform year etc... ... - .- -.




Y. O. L. O.
.

Thanks Stan. I used to see the same 53 plate type of thing on RangeRovers.net back when I was Admin over there. It was just as annoying then!  Ron B. VK2OTC
2003 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

ok so I have got another 140 cap to replace the 200 seems to seal ok will keep an eye on her she don't seem any different at the moment fingers crossed will carry 200 cap with me just in case

I have had a 140 cap on mine for years with no problem and no leaks or split tanks.
If you go into the hidden menus you can read your actual water temp while you are driving as when I did the 80 degree mod mine was getting hot although it wasn't showing on the gauge it was getting up around 115 deg C.
Mine was coursed by insufficient bleeding and when I raised the front up it helped and also my auxiliary pump on the inner wing has stopped working which can also make it difficult to bleed as can faulty seals in the valve it is attached to can make it more difficult
I would check your temps and go from there

great info thanks no problems so far with 140 cap. she seems to be running smoother top hose a lot softer than before .fingers crossed

Cool, I found it a lot harder to bleed with the 80 deg mod, I had the front raised on a sleeper with the cap off and kept burping the top hose and the bottom hose next to the stat housing and all without chopping my fingers off and it has been fine now for months

Bleeding a system is always a worry for me.
I always drill a 1/16 hole in the thermostat, That might stop them getting warm in the UK
Volvo trucks ask for a 1/8 hole to be drilled in one of their thermostats

it's definitely a worry in the early Petrol range rovers, the P38 only had to smell a cup of tea and it would overheat and fubar the engine - so i have read anyway, and the FF 4.4 is not keen on getting too hot.

Overheating was always a worry with them.

I removed the thermostat from the bottom hose, fitted a sputnik in its stead and then a lower temp thermostat in the inlet manifold - an easy mod with the GEMS engines.

I have a 4.4 Petrol about the same age as this.
I have fitted the 80 Deg Stat mod and run a 140 Cap with no issues at all.
Just towed the Caravan 500 miles last week in mid 20Deg weather and it didn't miss a beat
Checked levels the other day as we're off on another 500 mile trip with the Caravan and it didn't even need a dribble.

hi sounds good no probs with mine so far I wonder if there will be a time I can trust her without lifting bonnet and checking .did you have any issues with gearbox holding gear and not changing up .I have had this issue since the start 80 deg mod helped but she will still do it after an uphill tow .my van is 2 tonns twin axle hobby easy tow for car but realy annoying when car wants to do 80 mph before she will change up to 4th not ideal and a bit sore on the dishes in van . not towed since changing cap though .gearbox flushed and thermo mod new rad took out lower thermo still doing it .mabe just the size of van but she tows realy easy

OK 2 months with no water problems changed cap took my time bleeding . However a little
little set up problem with lpg was pointed
out.my vaporizer was set higher than my expansion bottle thus any air in system wold be trapped there causing all kinds of problems..A simple bracket lowering vaporizer has cured this fingers crossed.