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cummins n14 injector spec

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How To Build a High Performance Cummins Diesel

CEO/ Diesel Injection of Pittsburgh Keep in mind while reading this document that it is a gathering of all the articles Bruce has written over the last ten years. There may be some old prices discussed so, to get the latest pricing, check the main page. If you have any questions feel free to call us at 724-274-4080 and we can discuss your horsepower needs. Please have your CPL#. If you are looking for upgrades for your Electronic Celect/Celect Plus Cummins engine visit our Pittsburgh Power site at HOW TO BUILD A HIGH-PERFORMANCE CUMMINS DIESEL ENGINE This is a very controversial subject and 99% of the mechanics who build diesel engines will disagree with what we have to say and will probably refuse to build the engine for you. For the owner-operator who loves horsepower do not give up when you speak to the negative mechanic. There are a few good shops throughout the states that will build the ultimate performance engine. Or you can build it yourself as long as you have mechanical knowledge and tools. BUILDING THE ENGINE: In order to have the engine live with high horsepower and run efficiently you must have the right combination of compression ratio, fuel, air and timing. Please do not try to get extreme power simply by increasing the fuel pressure on a stock engine. You will obtain some horsepower, however your compression ratio, air and timing will be wrong. The best time to obtain horsepower is during a rebuild. Since you are going to buy new parts anyway you might as well buy the right combination that produces horsepower and generally the price of the high performance parts is the same as the stock parts. NOW TO THE NUTS AND BOLTS : The compression ratio of the pistons and the timing must go together. High compression pistons belong only in gasoline engines that are naturally aspirated. Turbocharged diesel engines must have low compression pistons in order to produce high horsepower. The lower the compression ratio the less wear on rod bearings and the lower the internal pressure will be when the injector fires. High internal pressure is very detrimental to the life of a piston. When you see a piston with a hole burned through, it’s not the fault of the injector it is a result of internal pressure. To control the pressure we lower the compression ratio and retard the timing. If you compare the compression ratio and timing of an NTC 290 versus an NTC 400 you will see the difference. Where do you think we have to be on the timing to produce 700 horsepower from an NTC?

2002 Chevrolet Impala Intake Manifold Replacement (Lower) Removal And Installation Manual

Intake Manifold Replacement (Lower) Notes Intake Manifold Replacement – Lower Removal Procedure 1. Disconnect the negative bakery. 2. Remove the upper intake manifold. 3. Remove the left valve rocker arm cover. 4. Remove the right valve rocker arm cover. 5. Disconnect the Engine Coolant Temperature ( ECT ) sensor electrical connector. 6. Disconnect and remove the fuel injector and the Manifold Absolute Pressure (MAP) sensor wiring harnesses. 7. Remove the fuel pipe clip bolt. 8. Remove the fuel pipe clip. 9. Remove the fuel feed pipe from the fuel injector rail. 10. Remove the fuel return pipe from the fuel injector rail. 11. Remove the fuel injector rail. 12. Remove the power steering pump from the front engine cover and reposition. 13. Remove the heater inlet pipe with heater hose from the lower intake manifold and reposition. 14. Remove the radiator inlet hose from the engine. 16. Remove the lower intake manifold bolts. 17. Remove the lower intake manifold. 18. Remove the valve rocker arms and pushrods. 19. Remove the lower intake manifold gaskets and seals. 20. Clean the lower intake manifold gasket mating surfaces. 21. Remove and clean all the RTV sealant from the lower intake manifold and the engine block (1).

2000-2002 Toyota Corolla, Celica, MR2 Spyder, and ECHO DTC P1349 – VVTi ACTUATOR Repair Manual

TC P1349 – VVTi ACTUATOR – EG009-03 May 19, 2003 Page 3 of 4 1. Inspect the condition of the valve cover oil baffle as per TSB EG007-02. If camshaft or camshaft position sensor damage resulting from a bent baffle is identified, repair the damage as necessary. 2. Make sure the vehicle is in “PARK” with the engine idling. 3. Referring to the screen flow below, connect the Toyota Diagnostic Tester to the vehicle and select the VVT Control Bank One Active Test (VVT CTRL B1) from the Active Test Menu. 1: DATA LIST 2: DTC INFO 3: 4: SNAPSHOT 5: SYSTEM CHECK 6: RESET MEMORY 7: MONITOR INFO 8: CHECK MODE SELECT DATA B DIAGNOSTIC MENU ENGINE A C INJ VOL A/F CONTROL CAN CTRL VSV TANK BYPASS VSV EVAP VSV (ALONE) A/C MAG CLUTCH FUEL PUMP/SPD LINE PRESS UP VVT CTRL B1 Confirm that the Vehicle is Stopped And Engine Idling 3: ACTIVE TEST PRESS [ENTER] INJECTOR 3.5ms IGN ADVANCE 11.0deg CALC LOAD 22% MAF 3.68gm/s ENGINE SPD 684rpm COOLANT TEMP186.8F INTAKE AIR 129.2F THROTTLE POS 14% CTP SW ON VEHICLE SPEED0MPH O2S B1S2 0.82V AFS B1 S1 3.25V SHORT FT #1 1.5% LONG FT #1 5.4% TOTAL FT #1 1.08 E D VVT CTRL B1 OFF INJECTOR 8.3ms IGN ADVANCE 5.0deg CALC LOAD 0% MAF 0.00gm/s ENGINE SPD 0rpm COOLANT TEMP186.8F INTAKE AIR 129.2F THROTTLE POS 14% CTP SW ON VEHICLE SPEED0MPH O2S B1S2 0.33V AFS B1 S1 3.29V SHORT FT #1 -0.1% LONG FT #1 5.4% TOTAL FT #1 1.08 VVT CTRL B1 ON 4. Using the right arrow key, toggle the VVTi actuator “ON.” 5. If at this point the vehicle does not run rough and/or stalls when the active test is performed, proceed with Repair Manual P1349 VVTi Fault Isolation Procedure (FIP). If the vehicle does stall and/or runs rough, this indicates the the VVTi control system is operating. Proceed to replace the VVTi actuator following the repair procedures listed on the Technical Information System (TIS): Engine Mechanical Section, Camshaft, Replacement The camshaft timing gear should come in the unlocked position from the factory. If it is difficult to install the camshaft timing gear, the lock pin may be engaged. To disengage the lock pin, apply and hold approximately 20 psi of air pressure at the oil feed hole located 90 degrees clockwise of the oval slot. (See Figure 1.) Once the pin has released, turn the interior assembly counterclockwise. (See black arrow in Figure 1.) B. Put the camshaft timing gear assembly and the camshaft together with the straight pin off the key groove. C. Turn the camshaft timing gear assembly (as shown in Figure 2) while pushing it lightly against the camshaft. Push further at the position where the pin fits into the groove. NOTE: Be sure not to turn the camshaft timing gear to the retard angle side (in the clockwise direction). D. Check that there is no clearance between the end of the camshaft and the camshaft timing gear. E. Tighten the camshaft bolt with the camshaft timing gear fixed. Torque: 54 Nm (551 kgfcm, 40 ftlbf) F. Check that the camshaft timing gear assembly can move to either side and is not locked


SERVICE PROCEDURE IT IS NOT NECESSARY TO REPLACE THE HIGH PRESSURE PUMP WHEN REPLACING THE A minimum of 3.5 MPa (500 psi or 0.8 volts) ICP is QUICK CONNECT FITTINGS. required before the injectors are enabled. No or low oil in the system, leakage at the injector upper 4. If a leak is identified in the branch tube, use D-rings, high pressure pump quick connect fitting, the following procedure to replace the branch high pressure pump discharge tube, faulty injection tube if the vehicle your working on is a F-Super pressure regulator (IPR), high pressure pump, or Duty or Excursion. For E-Series, the engine branch tube could cause low ICP pressure. needs to be removed to replace the branch tube. When replacing the branch tube, also 1. Perform the revised Powertrain Controls / install the STC bracket kit. Emissions Diagnosis (PC/ED) lead diagnostics Section 4, Hard Start / No Start Diagnostic BRANCH TUBE REPLACEMENT FOR F-SUPER Procedure Tests 10e and 10f. These tests were DUTY AND EXCURSION VEHICLES ONLY revised in January 2006. 1. Remove the transmission. See the appropriate NOTE model year Workshop Manual (WSM), Section 307-01. THE LOW PRESSURE OIL SYSTEM MUST BE WORKING PROPERLY IN ORDER FOR THE HIGH NOTE PRESSURE OIL SYSTEM TO BUILD ICP LEAVE THE FLYWHEEL ON THE ENGINE, AS IT PRESSURE. THIS INCLUDES ADEQUATE WILL MAKE IT EASIER TO TURN THE ENGINE PRESSURE AND GOOD QUALITY PROPERLY OVER TO TOP DEAD CENTER (TDC) AND THE MAINTAINED OIL. TRANSMISSION FLUID DOES NOT NEED TO BE NOTE DRAINED. THIS TSB ONLY APPLIES TO REPLACEMENT OF 2. Set engine at TDC both cylinder number 1 ANY COMPONENT FOUND DEFECTIVE WHILE rocker arms should be loose. See rocker arm PERFORMING PC/ED HARD START / NO START removal procedure in the appropriate online TESTS 10e AND 10f. WSM, Section 303-01C

Rotary Fuel Pumps Timing to engine steps

SMALL | MEDIUM | LARGE Previous Next Fuel Injection Pump (Distributor Type) The fuel injection pumps, Bosch® VE, Lucas CAV DPA, Stanadyne DB4, Lucas CAV DPS, and Delphi DP210, are rotary distributor pumps. These pumps perform the four basic functions of: 1. Producing the high fuel pressure required for injection 2. Metering the exact amount of fuel for each injection cycle 3. Distributing the high-pressure, metered fuel to each cylinder at the precise time 4. Varying the timing relative to engine speed. SMALL | MEDIUM | LARGE Previous Next Distributor-Type Pump Governor Balance between the governor flyweights and control lever position controls the metering of the amount of fuel to be injected. The fuel injection pump governor performance and setting can affect engine power. Special equipment and qualified personnel are required to verify governor performance. If the seals are broken on the external Bosch® VE adjustment screw, the fuel rate can, perhaps, be out of adjustment The Lucas CAV DPA/DPS fuel injection pump uses a coded spring connection to change the governor setting. Incorrect connection of the governor spring can affect performance. Adjustments and rating changes are described in the Master Repair Manual, Injector Pumps and Injectors, Manual Shutdown Levers Both fuel injection pumps are equipped with mechanical shutdown levers. These levers are spring-loaded in the run position. Not all applications will use these manual shutdown controls and there will be no cable or rod connected to the lever. NOTE: Partial actuation of the mechanical shutdown levers will affect fuel flow and engine power. SMALL | MEDIUM | LARGE Previous Next Advance Timing Mechanism Regulated pressure produced by a vane supply pump in both fuel injection pumps is used to advance the timing as the engine speed increases. A return spring is used to retard the timing as the engine speed is reduced. If a spring breaks, the timing will go to the advance position, resulting in torque loss, fuel knock, and possible engine overheating. Retarded (late) timing will result in torque loss, high fuel consumption, and white to black smoke. SMALL | MEDIUM | LARGE Previous Next The Lucas CAV DPA/DPS advance timing mechanism uses a check ball in the circuit which, if omitted during assembly, will result in no timing advance. If the fuel injection pump has been replaced or the mechanism has been removed to fix a leak, the problem can be that the check ball is missing