Which distributor to use?

[fjbm]

Hi

I've looked for some of the posts which were written here by distributors but I couldn't reach any definitive conclusion... sorry for that

I'm using a Q420 in my 1660cc engine and in the image attached it is written that at 5500rpm it has 33? of advance BTDC.

Which one was used here? The Aldon 103TC?

Thanks

[andyelan]

Hi There

33 degrees total advance at 5500revs/min looks like it's a 23D4 40953 from a non-emission Stromberg engine. I don't think a Weber/Dellorto engine as standard would have that much advance

Andy

[rgh0]

With 18 degrees advance at 1000 rpm looks more like a typical weber distributor with 6 to 8 degree more static advance than normal. The engine can probably use more total advance than a standard one at high revs but best done by recurving dizzy than just adding a heap of static advance

cheers
Rohan

[paddy]

Does anyone have a curve for the Aldon TC103 to hand?

(Yes I realise I can probably get one from Aldon...)

Thanks - Paddy

[fjbm]

Hi

The Aldon 103TC figures I have are Static (10 degrees) at 1000 rpm, Static +8 degrees at 2000 rpm rising to Static + 24 degrees at 5000 rpm (crank rpm and degrees quoted).

I just included the picture (of an engine which is not mine) in my post so people could help me choose which dizzy to put in my car as the characteristics are the same as those shown.

Can anyone help understanding which dizzy was used there?

Thanks