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to convert the engine to a mechanical pump is possible using a L series pump but there is more to it than you think because the L series engine is timed on No1 cylinder where as the 1KZ is timed on No4 cylinder ie 180 degrees out Before I installed my 1-KZ I made it run off a std 3L pump on the shed floor but I had to remove the cam gear first and machine another keyway in it 180 degrees out and refit to the engine useing the new keyway for it to run I took my 3L pump to an diesel shop to convert the 3L pump to 1-KZT and they rebuilt everything including a new pump body because after 400000 kms the body is worn from the vane lift pump in the mounting end of the body they also installed a new distributive head ( the metal plate that the 4 injector check valves screw into ) for a 1-KZt which has bigger holes in it for the greater amount of diesel required , the bloke who did the job was the first in australia to do this conversion and he thought the 3L pump might be up to it so he rebuilt a std 3L pump for another customer and stuck it on the Hartridge machine to set it up and screwed the pump to the max fuel delivery to see how much the pump produced and it still fell short of what was required for the 1-KZT Also you want a boost compensator fitter to the pump to stop overfuelling off boost
Do it
New genuine Toyota injectors ordered.
Are you deleting the AFC or tuning it for more pre boost fuel?
here is the timing specs out of a genuine 1KZ-T engine manual
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