Re: Should not be possible

Posted by jdemaris on February 27, 2007 at 06:03:52 from (66.218.12.109):

In Reply to: Re: Should not be possible posted by dave2 on February 26, 2007 at 15:42:05:

If you wish to make adapters and rewire - you can put many types of glow-plugs in - and make it heat in 9 seconds instead of 30 to 60 seconds.
Problem is - the faster you make it heat, the more likely it will be to burn out - unless you use an electronic timed controller.
That's why the OEM system is slow - it is simple and fairly reliable. I use my glow-plugs a lot, even in the summer - and I've had very few glow plug failures. I think I've replaced two plugs - at $8 each in the past 10 years.
I don't like the long heating time - but it's a trade off. The original glow-plugs are 9/10 of one volt and MUST be hooked in series so current flow is slowed down.
You can install modern 10.5 volt glow-plugs - like used in Volkswagen cars and GM and Ford trucks - and hook them in parallel instead of series with NO resistor. IF you do that, you have to make sure you use only PTC (positive temperature coefficient) plugs that have built-in current-limiters. Even then, you do not want to use them more than 10 seconds at a time.
One example, the AC Delco 60G (actually a German Beru plug) heats as follows:

AC60G (Beru) plug for 6.2 and 6.5 diesels
2 seconds - 10 volts, 8.6 amps and 807 degrees F
5 seconds - 10 volts, 8 amps and 1145 degrees F
9 seconds - 10 volts, 7.3 amps and 1545 degrees F
12 seconds - 10 volts, 7 amps, and 1716 degrees F

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