Motore Radiale

La Testa Radiale per Fiat Abarth 595 e Fiat Abarth 695



When I visited Mr. Mario Colucci the first time he mentioned that they had to produce 25 pieces of the Radiale-head due to homologation-rules.

595 Radiale on display realized by Ing. Mario Colucci

Foto by Bertazzini, Torino

As in the 80es 18 pieces were thrown away by Abarth (fortunately all these 18 pieces were saved) qe can state that there should have been used only 7 heads then.

- One was quite successful at Genova,

two were raced as 595
- one in Sicily,
- the other in the area of Naples.

Meanwhile I found traces of about 22 pieces actually existent ...


Forgive me that acctually I do not publish the complete ammount of information.


After I was happy enough to purchase one head from Mr. Aumüller in 1989 I had to remanufacture the inlet-pipe:

Here you see some forming ...

 

 

I only post here this "cleaned" drawing of the tube.

There do exist some technical drawings of Abarth as

- modificazione basamento motore

- modificazione tubo passaggio aste

-  creazione del strumento a modificare tubi

TARATURA CARBURATORE WEBER 45 DCOE 9 per 595/695/SS ASS.CORSA DI MASSIMA
Diffusore	32
Getto massimo	130
“       minimo	45 F 6
“     pompa	45
Freno Aria	250
Livello Gallegg.	7/8 m/m
Sede Spillo	250
Taratura  Carburatore Weber 40 DCOE 2 per 595/695 Radiale Di Massima
Diffusore	32
Getto massimo	130
“     minimo	45 F 8
“     pompa	50
Freno Aria	250
Livello Gallegg.  m/m	8,5
Centratore m/m	4,5
Diagramma Asse a cammes Prof.095/1 per 595/695 Radiale Di Massima
Aspirazione : Apertura prima P.M.S. 60° Chiusura dopo P.M.I. 88° Alzata P.M.S.:485 centesimi Distanza minima fra pistone e valvola a 8° dopo P.M.S. : 365 centesimi Pacco molle : 180 centesimi Aspirazione alzata massima : 1055 centesimi Gioco per funzionamento : 0,30 m/m Scarico : Apertura prima P.M.I. 82° Chiusura dopo P.M.S. 45° Alzata P.M.S. : 370 centesimi Distanza minima fra pistone e valvola a 8 ° prima P.M.S. : 205 centesimi Pacco molle : 180 centesimi Scarico alzata massima : 1115 centesimi Gioco per funzionamento : 0,30 m/m

Come trovato 10-2002  come foglio di Abarth scritto a macchina - vedere sopra il foglio originale

 -------------------------------------------

By the way, when Ingeniere Mario Colucci asked me what I thought about the origin of the name "Radiale" I replied I guessed it were a description of something like the hemispheric combustion-chambers; he laughed and explained me, that "Radiale" meant only a short trip in Turin to try a car in traffic on the streets and then to return. ("Facciamo un radiale"). He insisted that against public opinion this name never was intended to mean something special, it were just only a name. I asked him to give it to me written - and so he did.