Quote:
Originally Posted by greazzer
Hey Diesel 911,
You taught me something today -- actually 2 things.... there must be a difference AND I am very lucky. You're right and I was wrong. Never a broken pintle, however. Ran a test. I have 13 injectors. 10 are the ones pictured on left (older style) and three (newer style) ones on the right. I measured all the inners and there are differences, but all of them have differences. I should have 10 sets of the older style and 3 sets of the newer style. The 10 sets can be grouped whereby they are off by .001 or .002 (but generally the same) and the newer style are different by at least .004. The latter three were either .003 or .004 smaller than the older style. Same goes with the springs. There was 10 which were somewhat close, although they were off a little from each other and the 3 other springs were about .004 different. The rivit part same deal. Even the bowl like piece -- all had variances, but again .001. So, I can now say that virtually none of the 10 sets of the older style were identical but really really close (.001 -2) and the newer stuff is smaller, and although we're talking in the thousandths, they were smaller by at least .004 (but out of the 3 sets, each had its own variance. I would like to thank you before I screwed something up. Also, the shims are actually different in that the older shims have a smaller hole than the other style.
So, is there any real difference in the injector bodies ?
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I call the upper part that the Fuel Injection Line screws into the Body of the Injector.
I believe the old style one is Shorter; but I have not seen one out of the Injector for several years so I cannot be sure.
I have no experience with this but I have read that there is a differance in the spring tension between the Injectors used on VW Rabbits (the older ones) and the Mercedes Injectors.
For practical use this does not matter since you set the opening pressure.
The size of the Hole in the Shims/Spacers is not important in the Mercedes Injectors because the Fuel return passages are to the side of the Shims.
(When we had them we used to use shims with no noles in them made by Diesel KIKI Japan.)
Bosch makes direct Injection type Injectors that use the same Shims/Spacers and the Fuel return on them is in the center. So on those you need to have a hole in the center.