Quote:
Originally Posted by greazzer
Really, hasn't happened to me yet. I will take some measurements to see what these differences are. To the naked eye, they look identical, but the real equalizer will be the measurement. Maybe you're right and I have been incredibly lucky or maybe you're wrong. I will take a look tonight. Never a cracked pintle yet. As for shims, when you replace the nozzles, the PSI you start off with is never the same as the new one. For example, if you rebuild with Elsbett Nozzles, the shims go from what MB put in the factory to incredibly thin shims. If you go with the Bosio, then the shims are generally thicker. Thanks for the info, however. After rebuilding dozens of these, I guess I should have noticed these issues and size difference, or at least encountered a problem.
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Way back in the 1975-1980 I worked in a Fuel Injection Shop. Since Injectors are the easiest thing to do the Newbie starts on those so they can make some money off of you before training you to do Fuel Injection Pumps.
My Boss only liked to feed you as little info as He thought you needed to complete the job. This ended up with Me taking apart a set of Injectors that had one of those older Injectors with one of the long Nozzle nuts.
Not knowing any better and not noticing the size differences I assembled and Torqued an Injector Nut down and cracked the end of the Pintle off.
I ask my Boss what was up and He told me I had assembled the wrong part into the newer styled Injector Body.
The older type rivet looking part is longer than than on the newer ones. When assembled with the longer Spring that comes in the Newer ones it compresses the longer Spring completely and if you keep tightening on the nut something breaks.
Also the Spacer between that goes between the upper Body and the Nozzle on the Newer Injectors is thinner.
One of the ways to avoid breakag is to always tighten the Injector Nut as far as you can by Hand. If you happen to get that wrong part in the wrong Injector you will feel and when you look see that the Injector Nut will not tighten down enough by Hand.
I still have the 2 Injectors in the pic. If I can find them I guess I need to take some pics of the internals.