Do i have to get my distributor recurved ?
 

Hi,

I´m going to put carbs on my 911 3,0-79 and my question is, do i have to get my distributor recurved ?

I read in Bruce Anderson's "Porsche 911 Performance Handbook" ( page 144 ) that it wasn't necessary in a 1979 SC ?


To begin i will start with original distributor (but i believe that it is a weak link ).
My first choice would have bin a 12 plug distributor but i haven´t found any ( send a mail if you now anyone for a reasonable price), I might go for programmable direct-fire-ignition later on (if i don´t find a 12 plug distributor ).

Best Regards/ Pontus

HI P.R
Try hear for the Dist check ;

http://www.sgracingclassic.com/, Oliver R

or if not you could try;

http://www.supertecperformance.com/ Henry, for

"Bosch Ignition
Rebuild ignition distributer( recurve and rebush)
Assemble custom distributors (ie; piontless for early 901)
Fabricate twin plug distributors "

and if you thinking of contacting me for a Twin Plug Dist' , I would still pass you
on to Henry as I have used his dist, on quite a few engines and thay work with no prob's, also thay also "Look" right, the other is crank fire system from quite a few sources.

regards mike

Supertec twin plug with BurnBros components.
The parts manufactured by Aaron (BurnBros) are top quality and when assembled by Supertec produce the finest after market twin plug distributor on the market.
They are hand built/ custom for each engine.
Rotor supported by high quality sealed bearing.
http://forums.pelicanparts.com/uploa...1188209866.jpg
BurnBros rotor and Marelli cap
http://forums.pelicanparts.com/uploa...1188209907.jpg
27mm shaft for early case
http://forums.pelicanparts.com/uploa...1188209953.jpg
Distributor installed in a 3.0 with 46 mm PMOs
http://forums.pelicanparts.com/uploa...1188209991.jpg

Thanks Mike.

Henry,

That looks nice, how do i get one and what is the price ?

Please send me an email.

Regards/

Pontus

If you were to run with a single plug you could use your old SC dizzy as is. The advance is enough although to get optimum performance you should have it recurved. I'm still running the stock advance curve on my carbed SC motor. I find that with the idle advance at 5 degrees BTDC I get about 30 degrees total advance at 6000 RPM.

-Andy

Thanks Andy for your information.

It would have bin nice to now the difference in BHP between recurved original distributor and a twin-spark distributor setup, is there anyone who knows the difference ?

Regards/ Pontus

Your other option is a crank-fire kit, like the XDI. Adjustable timing, easy to set-up.