by t_ruffcorn » Mon Feb 15, 2016 7:00 am
The following is direct from rockentech
Here are some accommodations for the use of 14mm head: To run an electric pump with a high pressure seal and seal retainer, to keep the fuel flowing through there so that you can maintain it cool. You may also need a big set of injectors, such as with 6 x .016" (0.4mm) nozzles, and a big turbo charger or turbo chargers as well as fuel line upgrades (esp. using .120" / 3mm I.D. x .315" / 8mm OD lines). It is also recommended to use a high rpm spring (we currently not provide) and solid rollers.
You would have enough flow in your pump if you replace your stock rotor head with a 14mm version. However with the combination of 4mm camplate (also available) and a 14mm head you’d be working on extra accommodations to mitigate the extreme fuel flow due to the higher lift. Works could include handling higher rpm and timing and other issues including checking plunger and any other mechanical clearance, etc.
1993 w250 280k, 5 speed, 6x13 @80lpm, BD pin, 63/68/.80, 4200 gov, fluidampr, studs, springs, pushrods, 182/214 hamilton, W/M, steedspeed, PS I/C