911R Ignition

[chris_seven]

We are currently assembling a 911R Replica for Historic Racing and I have just managed to find an Marelli Twin Plug dizzy which needs some restoration.

I will need to run the distributor with the original points fitted which will probably be difficult to source and I also need to find some details of the ignition system.

The only information that I currently have is that 911Rs were fitted with a 'semi-transistorised' ignition system.

I guess that this means a points triggered system.

Does anyone have any detials that they could help with?

I had hoped that the system used was a early CD type unit.

Thanks for any input.

[Bill Meyer]

Check out this post.

http://www.early911sregistry.org/for...?t=7600&page=5

[Ernie W]

Hi Cris,
As Bill Meyer pointed out the thread that talks about the 911R system has a link for the company that has the racing CD system as used in the R, 904, 906, 908, and 910 it's located at www.lenzmotorentechnikusa.com/LenzTSZ and the wiring diagram for the 911R is at www.pbase.com/911r/image/24220608/original this was in a thread on "pull switches for twin plug ignition" by 911scfanatic. hope this helps. ernie

[chris_seven]

Thanks for the help I have e-mailed the guys in Germany and asked for Price/availability of the Bosch units.

[911pcars]

This may not be related, but:

I remember seeing Delta Mark 10 ign. boxes installed on some vintage 911s (Stephen Child's S/T?). How widespread were these used in factory cars, if ever?

Sherwood

[sithot]

According to records, Shorty had a Mark 10 installed in 1969. It was still in the car when I took over its care and feeding. It has since gone to a greater reward and the firewall awaits another one which I have. It needs it too as the plugs have a tendency to load up a bit around town. Otherwise it's fine.

Tom

[911pcars]

I've got to ask the question. Do these Delta ign. units have any historic value?

Sherwood

[sithot]

They were what was available from the aftermarket at the time. The only reason I have a new one is that my car is documented to have had one installed in it when it was a few years old.
I'm pretty sure I'd be just as happy with a 3 pin Bosch unit or MSD. The MSD is just a little "racy" looking and doesn't fit into the over all look of the engine compartment. The "look at me" RED doesn't work.
I'm betting money that someone can rebuild a Delta to better than new if you really want one.

Tom

[911pcars]

Tom,
The reason I ask is because I had one on my car for a few years before the car went up on blocks for long term storage many years ago.

I still have it in case anyone is interested in a "period correct" aftermarket ignition.

Sherwood
http://members.rennlist.org/911pcars

[sithot]

Good on you, Sherwood.

Here's the place that is supposed to be able to fix any of the Bosch units.

http://www.systemsc.com/


Best regards,

Tom