detonation and regraphing distributor
I'm running a 302, C4, LPG - single Gas Research throttle body, I don't know too much about the engine specs, it was rebuilt professionaly about 3 years ago.
I've got a real problem with detonation, I have to retard the timing so much that the car's really got no go, particularly down low. It doesn't seem to make any power until about 2300 rpm. My wifes 93 Nissan Pintara beats it off the line :(
If I advance the timing up any further, it starts detonating at about 3000rpm (down to 2000rpm if it gets hot). So I leave it retarded and drive around like Granny on her way to bowls :(
When it was first rebuilt, I had it on petrol (It always detonated right from rebuild), and the guys who built it said that they had added some extra compression 'cause I said that I was going to run LPG and that the detonation wouldn't be a problem with LPG, but even with LPG now it still denotes really badly.
I've read on this forum about regraphing the distributor, would this help? Does anyone know of anywhere in Canberra that can do this? I've got the standard electronic distributor.