Vehicle & Technical > Discovery

Timing mark

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andygod:
Can anybody please advise me as to what timing mark suits a 3.5ltr V8 running on LPG? I know that LPG engines like the timing advanced but I need to be more precise. I believe mine is a high compression engine.

Range Rover Blues:
Not as much as you'd think, about 4/5 degrees. BUT you will kill the engine if you run on petrol like that.

On Blue I have an Iwema ignition processor that adds 4 1/5 deg on LPG and it makes back up about half the power loss.

On the LSE I don't loose any power

On RRR we fitted a processor along with the multi pooint (like the LSE has) and it makes little difference, again LPG doesn't loose power.

andygod:
The consensus of opinion on other forums seems to be about 8º BTDC; do you think this sounds ok? :?

Range Rover Blues:
I don't know the proper setting off the top of my head but for a HC that would be perhaps a little cautious, for LPG but it will be harder to start and more prone to damage when on petrol, so a compramise as always.

BigGreen:
Mine is set to 8 BTDC runs fine no problems, installed one of the advancer gizmos 2 weeks ago and gave it another 6 seems to give me better power at high revs, was always a bit flat past 3k.

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