I started this thread because I want to rebuild my own injectors. I want to use my own experience and test equipment to save some money. I want to save the risks and costs associated with shipping injectors. I want to avoid retailers and service providers who are opaque to customers.
Good for you! I'm in the same boat.
Are any other fuel injection service industry providers willing to share their nozzle replacement processes?
I'm not an expert, but I've done a few sets for my own use.
The job is pretty simple:
1. Grab the body in a vise.
2. Use a socket and ratchet to loosen up the end cap.
3. Unscrew the end cap.
4. You'll end up with the nozzle + pintle right at the end, then a little spacer plate with a pin sticking out both sides(be CAREFUL of this) and then a spring-spacer, spring, and shims at the top.
5. Replace the nozzle+pintle assembly, reassemble, tighten down carefully.
6. Pop-test, figure out what sort of pressure you are at.
7. Disassemble, measure shim pack and add or subtract some thickness. Finding a kit of shims is hard; I've got extras from other injectors at this point.
8. Re-assemble, re-test and repeat 5-8 until you end up with around ~1800 PSI, +- 50.
Now, repeat with the other 7.
I also like to use ATF in my pop tester; it does a good job.
Are any folks on here in the business willing to sell and ship nozzles? New Stanadyne, reworked? Otherwise?
I've managed to get one set of nozzles out of R&D way back in the day, but it wasn't a regular offering.
I recently bought a set of chinese nozzles for ~$5/ea off alibaba, haven't had time to make injectors out of them yet. The listing I bought isn't valid, but here's the part number:
https://www.aliexpress.com/wholesal...d=SB_20200204205747&SearchText=diesel+6801036