PeachParts Mercedes-Benz Forum - Homemade: Loop to pencil style glow plug conversion

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- - Homemade: Loop to pencil style glow plug conversion (http://www.peachparts.com/shopforum/diesel-discussion/309647-homemade-loop-pencil-style-glow-plug-conversion.html)

this company seems to stock all the parts...
Wirthco Engineering Inc 87-30111 RV 6 WAY BLADE FUSEHOLDER
I found the stuff I photographed at Northern Tool...

Quote:

Originally Posted by whunter (Post 2849534)

Yes.
The pencil glow plugs are hotter = better cold starting.

Unfortunately the aftermarket kit is frequently not available, and may be discontinued soon.

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If the kit is going away does that mean the plugs are going to be discontinued as well?

Quote:

Originally Posted by zu! (Post 2849485)

Pardon my ignorance, but is there any particular reason this mod is recommended?

In addition to better starting, this mod places all the glows in a parallel circuit, which means that if one glow goes bad, the others will still glow. The original loop style glows are in series, and if one blows, they all go out.

Sincerely,

PE

Doesn't anyone make self-regulating glow plugs for the W123s?

Sincerely,

PE

Quote:

Originally Posted by gatorblue92 (Post 2871678)

If the kit is going away does that mean the plugs are going to be discontinued as well?

:) I doubt they plan to stop production any time soon.

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Quote:

Originally Posted by PackerEdgerton (Post 2871739)

Doesn't anyone make self-regulating glow plugs for the W123s?

Sincerely,

PE

Please define a self-regulating glow plug???

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Quote:

Originally Posted by whunter (Post 2871887)

:) I doubt they plan to stop production any time soon.

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That's what I thought but since the plug holes are larger I didn't know.

Quote:

Originally Posted by whunter (Post 2871894)

Please define a self-regulating glow plug???

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Is this like a NARTAB equalizer? If so, grab it, they are scarce as hen's teeth, haven't seen one since the 1970s! :eek:

I converted "Ciselle the Diesel" (1977 240D late 1976 MFG. Date) to the 18MM fast glow plugs using the info found in this thread. I went straight conversion using the 1977 240D relay, main fuse, etc. I must say this is an EZ+PZ conversion. Took me longer to fabicate the series jumpers than to do the conversion. I did a straight bolt in the GP's jumper them, use the hot lead from the strip fuse connected to #4 Gp and ditched the ground wire as the new GP's ground to the block. Went inside timed it 5 seconds and "Ciselle" roared to life easier and quicker than ever before. Had I know this conversion was this simple, I would have done it the first time around. WOW simply Wow!

FYI the 1977 GP relay does work, but mine sticks every so often and will not turn off the glow. I wrapped the relay a good one, glow went off and now kicks off when the engine starts like it should. I know a new relay is in the offing, but it is working well right now. So a straight conversion does work!!!

FYI World Pac (CarQuest), does stock these GP's but you have to ask for 1980 240D GP's to get the right (18MMK) GP's. Thought I'd pass this alomg for those that can use the info.

Be careful in just asking for OE plugs from a certain year and expecting to get retrofit pencil plugs. As far as I know, the retrofit pencil plugs were never OE on any MB's.

You have to be sure they are the 18MM ones, everything else is way too small. They are an optional GP. We sourced it by Bosch Part Number and the guy found it as a 1980 240 D option, but not for any earlier year. Yep you have to ask that they are 18MM or by Bosch Part Number. They are NOT OEM.