David Read defender110 at ozemail.com.au
Fri Dec 21 20:55:46 GMT 2007

Hi Franc
Point taken.
It has been recommended since that attaching the gas carb to the 
existing Performer manifold is a better way to go.
Besides the 90 degree elbow needed is available off the shelf!

I have not seen an aftermarket sequential LP system here in Oz.
They are available as factory fit options on the Mitsubishi, Ford and 
Holden products. The Mitsubishi Magna is available as LP gas only.
They probably exist, but as you say, using the existing petrol computers.

I will still be fitting a release valve to the manifold ....

South Oz

Franc Buxton wrote:
> 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.

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