Thread: Inj pump timing ''worth the hassle''

OK
Slightly advanced the timing, BUT have finished installing the new larger top mount intercooler and scoop GTHO shaker style (have been watching Mad Max again).

Did about 4hrs motorway driving with the trailer. EGT not going over 530 deg full acc up hill 5th gear 110km/h. Very smooth torque band now through the rev range. Picked up 2psi boost now around 16psi for a split second. Very impressed, cant tell if the engine is quieter as 35'' Creepys see to that. Could be a bit of both????

Justin

For those interested in the stock timing for the 4BD1 and 4BD1-T, taken from manual IDE2140:

Fuel injection timing
13* BTDC for 4BD1
10* BTDC for 4BD1-T

Timing advance specs for 4BD1
below 0.5* lead @ 1250 rpm
below 1.1* lead @ 1350 rpm
below 1.6* lead @ 1400 rpm
4.0* to 5.0* lead @ 1600 rpm

Timing advance specs for 4BD1-T
Start - 0* lead @ 1200 - 1300 rpm
Finish - 3.0* to 4.0* lead @ 1500 rpm