[Vwdiesel] Timing belt - job done -- NEW question about injectors

[LBaird119 at aol.com]

In a message dated 2/9/2010 9:43:32 PM Pacific Standard Time, 
cosborn at epix.net writes:

> I am also planning to replace the glow plugs with the fast ones and 
> service
> the injectors.

  Wow, someone that still has a full set of working slow glow plugs!

> 
> Question -- new injectors are fairly expensive.  I see that injector 
> nozzles
> are available at a reasonable price.  Can I get as good a result by
> inserting a new nozzle in my existing injectors as I could by replacing 
> the
> entire injector with a new or rebuilt injector?  Is the job of rebuilding 
> an
> injector difficult?   

  You have to break them apart then "sand" the bottom of the top 
half, and both sides of a 1/4" thick "intermediate" piece.  They 
don't have to be perfectly clean but 85% of any ridges removed.
Use 400 grit or finer, with oil, on a FLAT surface like a machined 
surface, surface plate or glass, in a swirling motion.  All parts need 
to them be CLEAN. I use brake cleaner, then rinse with WD-40 or 
clean diesel.  Assemble as it was.  With the sanding and new 
nozzles, the break pressures generally come in really close to new 
spec.  :-)  Use the slightest dab of anti-seize on the upper half 
of the body to body threads.  Don't get it near the nozzle end!
  Without a test stand it's hard to say if you got it right and it 
won't leak but torque to about 54lbs and you're done!  (hopefully).
  Most of the time I find a rebuilt assy is "cheaper" but that's 
at $30 or below and a nozzle being $15 to $20.  But lately a lot 
of the assys are $40 or more!  Yeesh!
    Loren