03-05-2022, 09:40 AM
Hi All
I’ve run the Brookfields on a DJ4 manual advance distributor since I first put it together. I thought I’d try an automatic advance DK4A. This is partly due to the increased tendency for the engine to knock using E10 fuel.
I have three DK4A distributors, two I believe are A7 originals and one from somewhere else. Top left in the photo is BN 86 838 8, top right is BN24 756 and what I believe is non Austin is the lower one marked BN30 435.
Both the distributors in the top of the picture have fairly sharp cam lobes whereas the lower one has more rounded lobes. The top two show an arrow indicating anti-clockwise from below there is no arrow on the lower one but the Bob weights are in the same orientation as the other two.
Could anyone please indicate which are suitable A7 distributors and what effect the sharp cams v rounded cams would have on performance?
Cheers
Howard
9A8D0DF4-1D3A-415C-B346-4D4CF65181F3.jpeg (Size: 126.88 KB / Downloads: 405)
I’ve run the Brookfields on a DJ4 manual advance distributor since I first put it together. I thought I’d try an automatic advance DK4A. This is partly due to the increased tendency for the engine to knock using E10 fuel.
I have three DK4A distributors, two I believe are A7 originals and one from somewhere else. Top left in the photo is BN 86 838 8, top right is BN24 756 and what I believe is non Austin is the lower one marked BN30 435.
Both the distributors in the top of the picture have fairly sharp cam lobes whereas the lower one has more rounded lobes. The top two show an arrow indicating anti-clockwise from below there is no arrow on the lower one but the Bob weights are in the same orientation as the other two.
Could anyone please indicate which are suitable A7 distributors and what effect the sharp cams v rounded cams would have on performance?
Cheers
Howard
9A8D0DF4-1D3A-415C-B346-4D4CF65181F3.jpeg (Size: 126.88 KB / Downloads: 405)