Author Topic: Glow Plug Shape  (Read 1805 times)

July 26, 2015, 03:14:18 pm

rs899

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Glow Plug Shape
« on: July 26, 2015, 03:14:18 pm »
Hi guys.  I am re-engining an '81 Cabriolet trying to use up parts I have squirreled away from 20+ years of working on VW and MB diesels.

I have a small pile of glow plugs, but only 3 that have a similar sort of "pointy/tapered" shape - I think the pn was 0250201032  which I think is really correct.  The rest seem to have a more blunt end -perhaps these are MB?

IIRC, the injector is aimed at the glow plug on a VW, whereas the MB has an internal ball for this purpose. 

Is there any real issue with using a "blunt end" GP on a VW?  Just trying to use up all my stash.....


'91 Jetta 1.6 NA, '82 Caddy 1.6NA, '81 Cabriolet,  4 Mercedes OM616/617s , 2 Triumphs and a Citroen DS19 in a pear tree.

Reply #1July 26, 2015, 05:58:18 pm

libbydiesel

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Re: Glow Plug Shape
« Reply #1 on: July 26, 2015, 05:58:18 pm »
VW used both blunt and pointy glow plugs.  You may find the more blunt ones are slow-glow.  If memory serves, the mercedes ones are longer and won't fit. 

Reply #2July 26, 2015, 06:14:34 pm

rs899

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Re: Glow Plug Shape
« Reply #2 on: July 26, 2015, 06:14:34 pm »
VW used both blunt and pointy glow plugs.  You may find the more blunt ones are slow-glow.  If memory serves, the mercedes ones are longer and won't fit. 


that seems to be the case.  All the blunt ended ones I tried as the fourth plug took more than ten seconds to get hot vs the other 3 when viewed through the open injector holes.  I tried a Beru, Champ, Monark, and a blunt Bosch and all were slow...
'91 Jetta 1.6 NA, '82 Caddy 1.6NA, '81 Cabriolet,  4 Mercedes OM616/617s , 2 Triumphs and a Citroen DS19 in a pear tree.

 

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