Re: type3-d Digest V02 #77

["James Ramsay" <james_ramsay@hotmail.com>]

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Hi all

I am doing some investigation into running my Fastback on LPG Gas(Propane 
and Butane Mix) - in the UK Petrol is so expensive (about 5 dollers per 
gallon)and LPGas has good tax breaks...

One issue is that LPG is higher Octane than Petrol - it is 112 where as the 
unleaded fuel we have is 95.

To get the most out of the fuel I would expect to advance the ignition. I 
have a 72 FI car - so the dizzy has 5 dgree advance at idle that then grows 
with rev's.

What I am concerned with is
1 Will the Brain have a problem with this - will the injectors still operate 
in sync with the ignition

2 The car will be duel fuel - should I expect to have a gas regulater to 
keep the fuel at 30 PSI or should I still pass gas through the presurising 
Fuel Pump. Or should I plan a second delivery circuit with a cut off valve 
between them.

Anyone gone through this exercise and can offer help.

Of cource if I carb the car thinks will be easy but there arnt too many FI 
cars in the UK and I would like to keep mine as an original example.

Many thanks

James

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