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I am trying to find a flap opener for the flapper style air flow meter. I run LPG and want to hold the flap in the open position while on LPG, and operate normally while on petrol. I saw these for sale a few years ago but not able to find one now. Even a second hand one would suffice.

I have removed the vacuum and mechanical advance and locked the distributor. You can use the software and lock in a timing figure, I locked 20 degrees and checked with timing light and there was 20 degrees advance. I then did it again for 40 degrees and that showed 40 degrees on the harmonic...

The ignition came with a few example maps. The current one I am using is a modified one from the example map I got with the ignition for a single carb v8 on petrol.

I am thinking of using 16-18 degrees initial timing plus 12 degrees vacuum advance and 12 degrees mechanical advance. So, Idle (with vacuum advance disconnected) 16-18 degrees Cruising at 100km/h 40-42 degrees Full load 28-30 degrees Does anyone have any other values they think may be better...

I think I should clarify what I require. I have just done some work on my engine and drove it for the first time yesterday. The engine is a 3.9 litre with new high compression pistons, 30 thou off the block, 20 thou off the heads, composite head gaskets. Heads had valves reseated were ported...

Has anyone used one of these ignitions on the Rover v8. I have one on my 1988 Range Rover v8 3.9 litre, just having a bit of trouble working out the correct timing map for it.

I own a Rover although it's a 1988 Range Rover. Have joined the group looking at information on the Rover V8 which is what I have.