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From my old dual fuel Range Rover I had salvaged a modern A&R Dual Fuel Electronic Ignition.
But my 'new' 1989 GQ was already fitted with a Piranha Ignition System. ....
Would it be possible to mate the two?
First contacted the maker of the Dual Fuel Ign. in the U.K. - (V8Engines) as friendly as but no conclusive answer.
Then contacted Piranha Australia - same story as friendly as but also no real help.
Eventually bit the bullet and started.
The Piranha appears to be a timing ignition only , not an amplifier. So I could use the output of the Piranha - which normally went to the coil - and connect that to the A&R input where normally the signal from the Lucas Range Rover or points distributor went.
Bingo !! Back in Dual Timing Business.
The A&R unit allows for a generous difference between LPG and Petrol timing.
In brief it works like this:
We tune for optimum LPG timing with the distributor.
Then switch to Petrol and see the timing retarded - this can be fine-tuned on the A&R unit with a small electronic settings screw.
That's all.
Here is a link to the A&R unit : http://www.v8engines.com/faq-a-and-r.htm
Good Luck !
I don't see why it wouldn't work, getting specifics on wiring it up to the Patrol might be your only issue. They are pretty vague about this on their website but I would give it a crack if it was me.
Hi , currently camping so limited computer abuse :-) It went really well, both the old Range Rover timing-retard unit and the Piranha are working flawless together. Also modified the gas carburettor part from Impco to a Blos plus plus OVML dual stage evaporator plus full custom K&N air filter setup. Will describe in detail once home as it works magical. The whole operation turned the car into a real good performing machine. More like what one expects from a 4.2 petrol at top-tuning.