Anybody tried bringing old junk nozzles back to life using grinding paste? I have these old injectors that came with my #17 head which installed 3 years ago. The injectors were caked in waste vegetable oil goo. Nozzles were seized solid so I dumped the whole lot in a jar full of acetone and forgot about them for the last few years. Fast forward to today and some of them actually came apart. Disassembled everything threw them in a tumbler for a few minutes with fresh acetone. But of course the pintles got separated from their nozzles. When I tried one and the pop tester it was just pissing all over the place starting at 400psi. So I used a bit of metal grinding paste on the tip of the pintle and a drill like this:
https://youtu.be/W-bazrdH1HM
FF to 6:20

And the result...
https://youtube.com/shorts/WRqYJelHkZg?feature=share

The pop pressure is a bit high but no pissing, leaking dribbling etc. This is a bosch india 265 nozzle. Not exactly known for its high quality. I'm tempted to try these in the car just for shlts and giggles. Bad idea or terrible idea?


https://imgur.com/a/C5Xwwsx

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CENSORED due to not family friendly words