Injector rebuild

[sdelaney]

I replaced my injectors last month and now I have the old injectors laying on my workbench, mocking me, and I want to do something with them.

My main hobby is learning how to do things that I don't know how to do and since I have this old set of injectors now seems like the time to learn how to rebuild them. I've searched the forums and gotten a general idea but I need some specifics.

For openers, what parts am I going to need, how do I identify them, and where do I buy them?

Any recommendations on a tester would be great too.

Thanks

[DmaxMaverick]

Start with a pressure tester. You can make one with an (old?) hydraulic bottle jack, tubing, and a pressure gage in the 2600-3000 PSI range (offers the best resolution for the pressures you'll be working with. 6.2/6.5 injectors should pop in the 1600-2200 PSI range (depending on the engine and application), so don't limit equipment to only the minimal 6.2L range.

Most of the time, only nozzles and seals are needed. Occasionally, springs or plungers. You'll likely need some extra shims for fine tuning, but you may also end up with some extras (you won't know until you actually begin testing, and new springs and plungers vary enough to matter).

[sdelaney]

Where do I buy nozzles, seals, springs, plungers, and shims? I've searched high and low but I can't really find anything.

[Kennedy]

I'll add a bead blast cabinet, lapping block, and some VERY fine lapping compound to the list of things needed. It's not exceptionally difficult, but if you don't get the surfaces lapped fine enough you'll have leaks at the middle.

Lots and lots of shims-I mean lots.