dan_uk_1984 wrote:

Fox wrote:

You never plan to go off road in your 4x4 then Dan?

On the hundreds of occasions I've been off roading from competitive trialing to green laning I've never once got a puncture. If you read the land ahead of you well you never should.

Sods law next time i venture off road I'll slash my sidewall!

joanne wrote:

dan_uk_1984 wrote:

Fox wrote:

You never plan to go off road in your 4x4 then Dan?

On the hundreds of occasions I've been off roading from competitive trialing to green laning I've never once got a puncture. If you read the land ahead of you well you never should.

Sods law next time i venture off road I'll slash my sidewall!

Hey lads.....He may not have hit a pot hole or nail.....but weve certainly hit a nerve with this one..
I did the gumball 3000 and got 4 punctures !!!!!
Green laning? is that a posh term for dogging in a green car ?

Glad you find it funny! lol but what is green laning!!!!

Its a kind of off road lane with legal access for cars etc, a public by way.

Sure someone will give you the "dictionary" meaning very soon

Oh David

Now i understand.....the green laners that whizz past me when i am out riding ! !

Yep they wont have punctures nor slash side walls, most of them drive in the middle of the road.... Smooth surface !

joanne wrote:

Green laning? is that a posh term for dogging in a green car ?

1st day on the forum and were talking about dogging already

lol

HUGI wrote:

I heard about big issues with the Jag Motor and LPG Conversions!

Something with the cylinder head ( sorry,dont know the technical word in english) was the problem

This concerns me at the moment. Does anyone know any more about this - was it something to do with valve seats? I've not known anyone convert the Jag lump to LPG...

Cheers in advance.

DAN has just had a conversion done on his and there's a thread re this here...

http://www.fullfatrr.com/forum/topic3659.html ... - .- -.




Y. O. L. O.
.

Cheers scary,

Saw this thread: however he had the conversion carried out on the BMW unit. I was wondering if anyone could expand on the possible issue (?) with the valve seats if converting the Jag unit to run on LPG.

I guess it won't hurt to email the company and see what they know...

Had a nosey around on the JE site, and they state the following:

Jaguar/Land Rover AJV8 Engine

Normally Aspirated
JE are still devoting development resources to enhancing the normally aspirated AJ engine, even though it is coming to the end of its OE use. JE intend to continue using it in the 'JE-35' Anniversary Edition Defender and thus have some exciting developments to offer, notably our big-valve polished and ported heads. Please enquire for full details of these components which give up to 60 more brake-horsepower than standard, with suitably re-programmed electronics. With its surfeit of power for normal use, the AJV8 is particularly suited to LPG modification which gives dramatically enhanced economy. However, the AJV8 engine has been found to be susceptible to valve recession when using LPG due to the valve-seat material used in OE manufacture, and the "dry" nature of the gas with no lubrication additives as found in petrol. JE have developed two alternative configurations to overcome this problem.

Standard valve size: JE-modified heads with 16 all new 'beryllium-free' valve seats per head. These valve seats are state-of-the-art, incorporating as they do the latest NASCAR-developed alloys of copper, nickel and unobtainium(!) These alloys were developed to replace the copper/nickel/beryllium seats previously used due to the highly toxic nature of airborne beryllium dust. JE can machine and fit these valve seats in-house, unlike the previously developed tungsten carbide seats which were, not surprisingly, as hard as our tungsten carbide cutters and thus had to be machined off-site at not inconsiderable cost.These JE valve seats are machined, cut and ground to the optimum shape for performance and long life. Valves individually hand-ground to fit individual seats, ports shaped to improve gas flow and camshafts and followers fitted to optimise minimum tolerance specifications. Per pair (exchange) £1328.00 Fitting £1015.00.



Adds a f g great chunk to any proposed conversion it would seem...