All too often people are buying the Jammer
tips, installing them on stock bodies and marketing them as Jammer nozzles.
Quick clarification----the "injectors" in a B Cummins are technically called nozzles, and the ends of the nozzles are technically called tips. An injector receives low pressure fuel and through another avenue, whether it be mechanical (53/71/92/148 Detroit) or hydraulic/electronic (HEUI Navistar or Cat) creates the high pressure fuel delivery. A nozzle receives high pressure fuel and that high pressure fuel opens the pintle. Maybe a little too technical to get into, and the industry terms have overlapped and ran together, but
technically 24 valves have nozzles, and nozzles have tips. Ok moving on.....
Many times people are buying those tips, simply screwing them onto a body, and reselling them as a "Jammer injector" without so much as a pop test. Can't say everyone is doing it that way but I know of enough to be aware & cautious.
If you call Bosch and ask them about the tips you'll get an earful about how dangerous it is to just screw them onto a body in a vise, like most do. There is a special jig fixture to perform this job correctly---not using it can lead to spring breakage, body fracture, insufficient torque, and excess pressure on the tips that can lead to premature breakage---a topic that has been hashed over on these boards before.
I'm not posting this as a rant, just saying that not all nozzles wearing the Jammer name are created equally. Even some of the larger, well known shops don't use the Bosch jig--but at least they take the time to balance the set before it goes out the door to their customers.
I've installed nozzles for people who say "the engine just doesn't feel right" and I reply with "maybe you should've listened when I told you to spend the $40 and have them checked at the diesel shop then". You'd be utterly amazed the number of sets I've seen with specs to either end of the spectrum, packaged as a matched/balanced set.
Even Bosch has this problem--many times I'd go through 10 or 12 nozzles for a C Cummins before I found 6 that matched well enough to go in the engine. A little anal retentive? Perhaps, but the difference between matched & balanced nozzles and just nozzles slammed in the engine is huge.
I'm not a vendor, a forum god, or a self-proclaimed expert, just a member w/ a lil diesel knowledge, take my 2 cents for what you will.
Dan-