Detonation - ignition advance curve

[Jens Munk]

This is kind of a continuation of another thread: roverp5.proboards.com/thread/8284 , but since this thread has another topic, I will post it separately.

I have had problems with detonation even under light loads, which I cured by reducing the compression ratio slightly with thicker modern head gaskets. Well, I thought so. It is at an acceptable level here in flat Denmark, but I have just returned from holidays in Bath in the UK and it was not acceptable at the long and steep hills in this area. I had to force it to lower gears and creep up the hills.

So I guess I have to look into the ignition advance curve next, but before starting to modify the distributor weights/springs, I would like to check that is advancing correctly. Does somebody have the advance curve for the 35D8 distributor?

Thanks,

Jens.

[guidedog]

Hi. Jens, I had the same problem it was nothing to do with timing or compression, mine was to do with fuel starvation.

The question I have to ask is. When did you last change your fuel filter? I only kept going because I changed my fuel pump to electric.The AC pump (mechanical) is like the oil pump. POOR. Even the maintenance manual recommends renew filter after 16000 km.

Hope helps.

Bob

[Jens Munk]

Interesting!

The fuel pump has been replaced with an electrical, and I will replace the fuel filter now.

Jens.

Jul 20, 2014 13:29:36 GMT guidedog said:

Hi. Jens, I had the same problem it was nothing to do with timing or compression, mine was to do with fuel starvation.

The question I have to ask is. When did you last change your fuel filter? I only kept going because I changed my fuel pump to electric.The AC pump (mechanical) is like the oil pump. POOR. Even the maintenance manual recommends renew filter after 16000 km.

Hope helps.

Bob