VE Pump Tuning - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 1 (permalink) Old 08-15-2005, 09:30 PM Thread Starter
 
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VE Pump Tuning

I'm going to try and explain some tuning techniques for the Bosch VE. First off, www.piersdiesel.com offers a 3200RPM govenor spring, and a cut fuel pin for a couple of modest power gains. Good illustrated instructions for adjusting the AFC starwheel, adjusting the power screw, and turning the stock fuel pin can be found at www.dodgeram.org under 1st Generation - More Power, or at www.turbodieselregister.com - Readers Rigs - BushWakr. If you decide to remove the lock collar on the fuel screw to get a few more turns, you will have to remove the low idle screw, or replace it with an M6 bolt to lower the RPM's to the proper setting. If you want more power than that, take the top housing off of the pump, and flip it upside down. You will see an arm that runs vertical with a foot that extends rearward. This arm is what moves the needle into the housing that rides on the fuel pin. All you have to do is remove the foot that extends rearward, about 3/16 of an inch. Make sure that the remaining surface is smooth, since there is friction on that piece. This modification is similar to removing the foot on the AFC arm on the Bosch P Pump. It adds much more fuel down low, creating plenty of smoke, so feel free to back the smoke screw all the way out of the aneroid housing. The only problem with all of the above modifications, is that it is very likely that the fuel pressure will be raised far enough to blow out the fuel shut-off solenoid. This can be fixed by removing the solenoid, pulling out the plunger and spring (do not reuse), reinstalling the solenoid, and adding a cable to the manual fuel shut-off lever just above the KSB solenoid.
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