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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: 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: 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: dhla40 on 27 September, 2021, 09:29:18 AM Excellent, thats about what I am using, but with 125 main 165 air.
Sean |