Original L ucas Petrol Pump:
This is the weakest part of the whole system (also on the Maserati MK-I system). We can replace the Lucas pump for all Triumph TR-5 PI and TR-6 PI models with a Bosch pump (special model). There is only one type of Bosch pump suitable for the Lucas system and you need the following parts for a optimal 110 Lbs pressure:
From the petrol tank: Original C.A.V. petrol filter - Bosch pump - Pressure Relief Valve and all the pipes and fittings.