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Lotus 7 Adventure begins

In the fall of 2019 I found the 1984 Super Seven Sports Car company Lotus 7 S3 at Sodo-Moto in Seattle Washington. After negotiation and...

Monday, August 31, 2020

Under the Hood

   several months and a few adjustments made

 - under hood seal

- removed evap canister and lines that were not connected 

- installed fuel filter

- installed new mechanical fuel pump

    - pump was too high a pressure.  the New old stock pump was suppose to be 4 - 8 PSA.  It was running at 6.8 psi when installed.  

     - installed Mr Gasket 1 - 6 PSI fuel regulator

    - set Fuel Pressure on regulator at 1.5 PSI and it measured 3 at the Carbs with Fuel Pressure guage


MSD Ignition

- unable to set the timing to 12BTDC with timing light.   MSD needs old school static type.  

- separated the plug wires to ensure best chance of setting timing on Cyl 1

- plug wires did not have ends at the Dist.

- installed plug wire ends and re-routed wires for seperation

- set timing with 3122 timing light. to 12 BTDC


Carb Setup

- Adjusting the air horns changed the fuel needs.  Mikuni PHH44 were overly rich and fouling plugs

- changed plugs to iridium.

- Overly rich and poor milage 

- turned down fuel at Pilot jet screw.  from 3 or 2 turns 

- installed innovate MTX-L AFR Guage

    -  AFT at 10 or less at idle, Cruze AFR 10.5 and transition 11.2 and WOT 10.2

    - turn down fuel to 0.5 to 1 turn out

    - AFR at Idle 11.9 to 12.2.   Cruze 12.5 and WOT 12 with transition 12.5 to 13.4

- adjusted idle down from 1400 hot to 900 hot