I got an older 2008 123 ignition, what curve should I select for the E-type?
#1
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Just a while ago, the dissy in my E-type decided to die. A friend of me has given me a spare 123ignition, the early version with the curve selector.
It has engraved XK 12-04-08 in it, so it's the right dissy for the E-type.
I have checked the data about the original ignition in the workshop manual, and the the data from the website of 123ignition, but I can't quite compare them with each other.
For a start, the original dissy starts advancing at 450rpm already, while the 123 starts advancing only at 1200rpm.
The manual doesn't say when mechanical advance ends, but the 123 can give a max. mechanical advance of 24 to 32 deg.
Furthermore, the original dissy starts advancing at about 2inHg, while the 123 starts at 4inHg.
So, I find it rather hard to choose the right curve. Anyone who can tell me which ones are a good guess? I currently have the static timting at 10 degrees BTDC.
The data for the 123 ignition can be found here: 123ignition
Thanks for the help!
It has engraved XK 12-04-08 in it, so it's the right dissy for the E-type.
I have checked the data about the original ignition in the workshop manual, and the the data from the website of 123ignition, but I can't quite compare them with each other.
For a start, the original dissy starts advancing at 450rpm already, while the 123 starts advancing only at 1200rpm.
The manual doesn't say when mechanical advance ends, but the 123 can give a max. mechanical advance of 24 to 32 deg.
Furthermore, the original dissy starts advancing at about 2inHg, while the 123 starts at 4inHg.
So, I find it rather hard to choose the right curve. Anyone who can tell me which ones are a good guess? I currently have the static timting at 10 degrees BTDC.
The data for the 123 ignition can be found here: 123ignition
Thanks for the help!
#2
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