Lancia Motor Club

Model Technical and Interest => Fulvia => Topic started by: Beckerman67 on 25 September, 2021, 10:34:32 AM



Title: Rolling Road Tune
Post by: Beckerman67 on 25 September, 2021, 10:34:32 AM
 1972 Fulvia Coupe 1.3s S2

 Before tune - engine standard except for 123 electronic ignition and ITG foam air filter:

 BHP 72.7
 Max power at 5280 rpm
 Torque 78.3 lbf.ft at 4335 rpm

 After tune - main jets changed from standard 120 to 130 and timing adjusted:

 BHP 86.1
 Max power at 6405 rpm
 Torque 78.8 lbf.ft at 4800 rpm


Title: Re: Rolling Road Tune
Post by: davidwheeler on 26 September, 2021, 09:45:32 PM
Worth spending the bob or two then!    I gather modern petrol is of a different viscosity.    I have enlarged the "slow running" jets and improved pick up and have often wondered about the mains...


Title: Re: Rolling Road Tune
Post by: Beckerman67 on 27 September, 2021, 04:56:42 AM
 I changed the main jets without removing the carburettors.
 A tricky little job which involved standing on my head with a mirror and a catch-tray for petrol and tiny screws!


Title: Re: Rolling Road Tune
Post by: Mikenoangelo on 27 September, 2021, 07:27:03 AM
Much higher rpm "after". Could it not achieve 6400rpm before?
Mike


Title: Re: Rolling Road Tune
Post by: dhla40 on 27 September, 2021, 08:26:48 AM
Dd you retain the standard 180 air correctors?  I presume the power figures are at the wheels.

Sean


Title: Re: Rolling Road Tune
Post by: Beckerman67 on 27 September, 2021, 08:48:58 AM
 Air correctors standard 180.
 Brake Horse Power is stated at the flywheel as is normal practice I believe?
 Wheel Power is 57.2


Title: Re: Rolling Road Tune
Post by: dhla40 on 27 September, 2021, 09:16:43 AM
I was thinking Lancias book figure of 90hp may be optimistic, what timing max advance did you settle on?

Sean


Title: Re: Rolling Road Tune
Post by: Beckerman67 on 27 September, 2021, 09:23:56 AM
 Timing at 17/29 max


Title: Re: Rolling Road Tune
Post by: dhla40 on 27 September, 2021, 09:29:18 AM
Excellent, thats about what I am using, but with 125 main 165 air.

Sean