123 Dist on Djet.

E9madada

E9madada

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I fitted a 123 distributor on my CSI a few years ago, which I had set to advance curve 7!
Having seen a few historic post lately, it would appear that it should actual be Vacuum Retard, so I have moved it to curve F.

Can anyone confirm this is correct please?

Adam

1727961119174.png
 
That's an interesting question. The CSi doesn't use vacuum advance, only vacuum retard. To Steve's point though, I haven't been able to find that they publish the curves for the switchable distributors. Kind of frustrating. I'll email them and see if they can supply them.
 
When I bought it they didn't do the programable version for the Injection, so am restricted to the standard values.
I have move it back to Vac advance, which feels better, this seems to add 10 degrees advance at max vacuum.
It is a trade off between low and high revs by changing the timing, so knowing switchable curves would be handy.
 
I prefer to keep the tune as close to the original distributor curves with, may add a few degrees of advance up to 3K rpm.

I have run the manual switched 123 6-V-RIE with the stock curve since 2016 Have driven at least 65K miles in the past 8 years.
I have 123s in the 1968 1600 Cabriolet & 1973 2002Tii as well.
 
adawil2002 said:
I prefer to keep the tune as close to the original distributor curves with, may add a few degrees of advance up to 3K rpm.

I have run the manual switched 123 6-V-RIE with the stock curve since 2016 Have driven at least 65K miles in the past 8 years.
I have 123s in the 1968 1600 Cabriolet & 1973 2002Tii as well.
Click to expand...
What setting do you have it switched to?
 
@sfdon - I know you're a fan of the 123ignition distributor and have used them in the past. Adam (@E9madada ) posted a question about which curve to select at the top of this thread. The switchable version for D-jet has two different curves for the CSi (based on the original Bosch distributor p/n - 0231.306.001). One of them is for systems with vacuum advance (position 7) and the other for vacuum retard (position F).

We know that our cars don't use vacuum advance, but Adam has tried both and it seems to run better for him in position 7 (with vacuum advance).

I've only tried position 7 because who has time to read all the way to the end of a single, small page in an installation manual?

Which setting would you recommend/have you used in the past?

Adam posted an image of curve choices from the manual at the top of this thread. I haven't been able to find documentation showing the actual curves for the settings, so we can't really compare them to the graphs in the Blue Book. I emailed the US distributor and asked if they could provide the actual curves for each of the switch choices. I'll share them with the forum if they are able to supply them.

Thanks as always,

Dan
 
The computer wants vacuum retard or nothing.
I prefer nothing
 
coupedegrace said:
That's an interesting question. The CSi doesn't use vacuum advance, only vacuum retard. To Steve's point though, I haven't been able to find that they publish the curves for the switchable distributors. Kind of frustrating. I'll email them and see if they can supply them.
Click to expand...


is that true ?

the CSi does not use advance ?
 
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