I've got the Jag 4.4 and quite like it. Over here, it's petrol only and the Jag is definitely the preferred engine over the BMW one.

HOWEVER, if you were planning on an LPG conversion, I'd use a BMW one. A Jag conversion isn't impossible, but the BMW really seems to take to them. Also, due to the higher numbers of BMW engines in the UK, you won't end up as a guinea pig when they do the conversion.

I have run both as my owns cars at various stages and although the Jag is the better engine the BMW is very free reving makes a good noise and is fun to drive.

RR2008HSE wrote:

HOWEVER, if you were planning on an LPG conversion, I'd use a BMW one. A Jag conversion isn't impossible, but the BMW really seems to take to them. Also, due to the higher numbers of BMW engines in the UK, you won't end up as a guinea pig when they do the conversion.

I agree with RR2008HSE and tb10.

I have a 54 plate BMW 4.4 FFRR and had it converted over 4.5 years ago to lpg. I've had no problems with it at all.

SKOT wrote:

But surely the point here (as mentioned above) is that the BMW 4.4V8 has the cream cheese 5 speed ZF auto box and the Jag 4.4V8 has the much acclaimed and well sorted 6 speed ZF.

No?

Ummm, I'm being tipped away from the Jag engined FFR. Pity, it's an 05 with approx 55,000 on it but I could only run it on LPG seeing as how I average 24,000 miles a year

52 plate BMW4.4 on LPG since 2006 (43000 miles) - now done 90000.

I swear the engine seems happier on lpg.

If I did have the jag engine I would get the lube system, (none on my BMW)

I like the BMW engine - if I am stuck in Euroland probably easier to get the BMW bits than Jag bits Howard
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2002 4.4 V8 LPG Tartarini
Have RSW AllComms in Cheshire J17 M6 - happy to help.
*Gone: Classic Vogue SE Auto V8 3.9

2004 BMW 4.4 with STAG LPG system. Now approaching 178,000 miles. Been LPG'd for 6 years or so, over 70,000 miles and not ever had a problem with it. Needs servicing once a year (£45).

I had a BMW unit on LPG (Romano IIRC). I general I liked the engine, but thought that it suffered from being run at high temp by the stat. As a result, I felt the coolant pressured high and hot and exposed leaks at early stages, which made for always having to be on top of the issue. I changed the stat to a lower temp one, and felt that the engine ran easier and more relaxed ( hard to describe ) but at the end of a run, it didn't have that really hot feel and smell that it had before.

I did run well on LPG and I had no issues with my system. The addition of a flash lube on the jag engines steered me away from going down that route, just felt that it was another complexity to worry about. V8 or else ...

Of course my change comes in the middle of the great Diesel disaster other wise I'd be looking a a wide choice of FFR's. I know the VED rates will change in 2017 and that the bands and figures have already been announced but they are for new vehicles being put on the road. Older vehicles will still use the current VED rates but there is nothing to stop these being altered in next Marches budget if the emission figures are recalibrated.
Been following this issue closely and it's interesting that the Govt aren't upset and angry because the environment might have been harmed but that they might have collected less tax from the motorist than they could have !!

theoretically they could change the bands on already registered vehicles, but they haven't in the past. Early 2006 Range Rovers still use the lower rate for example. Whereas an identical car registered a day later, costs another £200 a year. They never seem to lower or raise it. The only example i remember is under the old system, they lowered the tax on anything under 1500cc.

The Diesel Range Rovers are all in pretty much the top band anyway. Worst case is they bring the Diesel Rates up to a level with Petrol rates, but they could have done that at any time. I would think if it's going to affect anything it's going to affect smaller city cars with free road tax, so they just charge them another £30 or something. They could easily just send the tax on anything over 2 litres sky high, regardless of the fuel type.

If you're doing enough miles to warrant a diesel, then the road tax will be the least of the expense.

steptoe wrote:

No............... The diesel box is cream cheese not the petrol ZF box.

Righto  2006 4.2 SC
2019 Renault Zoe Dynamique Nav

So I've just driven from St helens to Leeds to look at Jag engined FFR. 2005 with 54,000 on it.
' THIS VOGUE SE REALLY IS THE BEST ONE WE HAVE EVER HAD IN. FINISHED IN BUCKINGHAM BLUE WITH FULL AUTOBIOGRAPHY INTERIOR. COMPLETE WITH REAR ENTERTAINMENT., THIS CAR IS IN REMARKABLE CONDITION, BOTH INSIDE AND OUT., THE WHEELS ARE LITERALLY UN MARKED WITH NEARLY NEW PIRELLI P ZERO TYRES., THE INTERIOR IS IN PERFECT CONDITION WITH NO MARKS ANYWHERE., THE EXTERIOR PAINT IS COMPLETELY ORIGINAL HAVING NO DAMAGE OR PAINT ISSUES., '

Sorry, but the blistering, rust pocked,scabby inner rear wheel arches must have been missed on your inspection !! It had also been buffed with in an inch of its life and still various door scratches caught my eye from 3 foot away. 140 miles round trip along the hell road that is the M62. PM if you would like the name of this dealer so as not to waste your time, fuel and money .

daveK , if you are intending to use a v8 on LPG, just wait for the right car, with it already fitted. It makes complete sense. You know it drives well, it's registered, you pay nothing (not much) extra (secondhand) for the £2000 LPG fit, and you are instantly better off.
I have the Bmw engined car on LPG, (prinz make) and it's on 160k, it had been fitted at 60k, and it's just fantastic. And I can get fuel near to me at 49p, but my two nearest LPG stations are 56ppl. -and I have half a tank of the dear stuff in reserve, just in case.
P.s an LPG service is £100 every other year.
Your only decision, is wether to have a spare wheel in your boot, or gamble with an empty boot, and AA recovery etc.

been running lpg vehicles for 10 years. my current BMW 4.4 FFR was converted at 70,000 and now on 122,000. Close mate is a fully trained and qualified lpg fitter and is able to issue certificate. He's done plenty of vehicles but never a Jag 4.4 FFR. Only asking for peoples experiences because of the problems around the jags valve seat issues. Happy that we have sourced the correct electronic lube kit and lpg system. Only cost will be parts, no fitting charge as I am happy to get my hands dirty !!