X1/9 Prototipo Specification
Posted: November 5th, 2010, 11:53 pm
I have an X1/9 in the final stages of preparation as a historic rally car, the specification is quite mild, basically a Group 3, 1300cc.
The long-term plan is to eventually create a full Prototipo replica but I am short on some specific details of the original still born Group4 Fiat.
I would be grateful if any forum members could fill in the blanks in my knowledge. I have two main queries regarding the original specification: -
Suspension
What uprights and hubs were used? Given that only the 1300cc X1/9 was in production at the time of the Prototipo development, Fiat was unlikely to have utilized standard items.
Brakes
I believe the brake set up (at least on the front) came straight from the Group 4 124 CSA Abarth. What specification would this have been? i.e. disc diameter/thickness, caliper manufacture, piston number/diameter etc.
If anyone has undertaken a similar project and would like to share any relevant information this would also be most welcome. I am also seeking particularly guidance on:
Transmission - Fiat used the Group 4 Beta gearbox, the homologated ratios of which had a very effective spread, but given that these are likely to be more rare than the proverbial hens teeth, a Montecarlo box is probably the only choice. Is anyone using a monte box? What is your experience with gear and final drive ratios?
Many thanks in advance for you response.
The long-term plan is to eventually create a full Prototipo replica but I am short on some specific details of the original still born Group4 Fiat.
I would be grateful if any forum members could fill in the blanks in my knowledge. I have two main queries regarding the original specification: -
Suspension
What uprights and hubs were used? Given that only the 1300cc X1/9 was in production at the time of the Prototipo development, Fiat was unlikely to have utilized standard items.
Brakes
I believe the brake set up (at least on the front) came straight from the Group 4 124 CSA Abarth. What specification would this have been? i.e. disc diameter/thickness, caliper manufacture, piston number/diameter etc.
If anyone has undertaken a similar project and would like to share any relevant information this would also be most welcome. I am also seeking particularly guidance on:
Transmission - Fiat used the Group 4 Beta gearbox, the homologated ratios of which had a very effective spread, but given that these are likely to be more rare than the proverbial hens teeth, a Montecarlo box is probably the only choice. Is anyone using a monte box? What is your experience with gear and final drive ratios?
Many thanks in advance for you response.