[ROVERNET - UK] Gas (LPG) P6B

Franc Buxton fab at jeengineering.co.uk
Fri Dec 21 09:41:52 GMT 2007


David Read wrote:
> No problems Kent,
> The engine has a 10.5:1 compression.
> While not overly excessive, I have to run it at TDC to stop the pinging 
> on our lousy unleaded fuel <gloom>.
> I will start gathering bits in 2008 once I have the go-ahead from the 
> local vehicle registration authorities.
> 
> I am hoping that removing the petrol tank will give me sufficient room 
> to mount a "scuba" style gas set.
> Carburettor will be a specialist LP gas unit from
> http://www.gasresearch.com.au
> attached to a standard RR EFI plenum chamber.
> 

	Firstly, greetings of the Season to all, and yes, I do still lurk here!
:>)

	David, my advice is to be very wary of LPG equipment which fills the
EFi plenum with explosive mixture. I have considerable experience of this, and
the end result is very often a large hole in the plenum. The only systems I
would recommend for this are the 'sequential' gas injection systems which feed
LPG to the intake runners directly. They are considerably more complex and expensive
but in my experience save a lot of grief and expense in the long run! I have
one on my Range Rover which has given several years of good service, and I am
about to fit one to my Jaguar XK8. Performance should be almost (or completely)
indistinguishable from that on petrol. I don't know how easy it will be to make
one work without a petrol system though, as they take a lot of information from
the petrol electronics. If you do fit the system you originally planned, please
make sure it includes a blowout valve on the plenum! Please also forgive me if
I'm teaching Grandma to suck eggs! ;>)

	Whatever you do, good luck with the project. LPG is always my fuel of
choice, especially in thirsty 300BHP V8s!

	Cheers,
		Franc.

-- 

Franc Buxton
IT and Electronic Development Manager
J.E.Engineering Ltd, Coventry.

Die dulci fruimini



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