The 'Jaguar' V6 engine isn't Jaguar at all, it is a Ford engine.

Along with its lineage it carries a common Ford trait, relatively soft engine valves. The valves are just barely good enough for the car to make it out of warranty when running on petrol only. None of the other Jaguar engines suffer this problem, whether V12, Straight 6 or V8.

LPG is a 'dry' fuel, having no additives to help reduce Valve Seat Recession (VSR). LPG operation may speed up the VSR process in an engine with soft valves although it can be slowed down again by valve lubrication devices such as 'Flashlube'. NOTE that the VSR process will only be retarded, not prevented nor cured. If the valves in your V6 engine recess, a temporary solution can be found in having the valves 're-shimmed' at the cam end, although this measure also cannot stop the onset of VSR. The only way to deal with the inevitable result (even if running on petrol only) is to have the cylinder heads removed, then have Stellite valve seats and harder valve stems/heads fitted before conversion.

Our work here is focussed on LPG conversion of a very wide range of makes and types of car so we leave the replacement of valves to specialist engine re-manufacturers. If you decide to go down that route, the work needs to be done before we begin the conversion. We can convert any of the V6 engine variants for you, they run very well on LPG and save a lot of money on fuel but we will accept no blame for valve seat recession problems developing later on in the car's life. It is not LPG, the manufacturer of the LPG system, the installer of the system nor the any part of the setting up of the conversion that is to blame for VSR. It is simply due to the cheaper materials used in faster engine manufacturing methods.

To give an idea of how VRS progresses in the V6 engine we have gathered information from many other conversion companies. The average mileage covered on LPG before VRS makes its presence known is around 20,000 although some cars, especially those fitted with 'Flashlube' have no problems at 40,000.

Given the possibilty of VSR developing in the Jaguar V6 engines we ask anyone requiring a conversion to sign a waiver removing any liabilty for this problem from us.

For more on the subject of Valve Seat Recession, click this link - Valve Seat Recession

Go LPG / Jaguar V6 Conversion V6 models require a Multi Point Gas injection system.

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