Glow plugs, 83 thru 86, old style

[Marianna2003]

No need to be sarcastic! The Master Electrician didn’t pick up on the statement posted by 16Vjohn “the lower the voltage the higher are the required amps to perform the same work” !!! This statement is true except it does not apply in any way to GPs as I tried to point out. GPs are pure resistance. You are right E(voltage)=I(current)times R(resistance). And we all know ‘You can’t fool Mother Nature’. Lower voltage means slower heating. I wonder if the engineers intentionally used the wires to drop the voltage to the GPs.

[Dave Sponaugle]

That is exactly what I have always said.

Small wires with a big load to drop the voltage to the plugs.
Otherwise with the correct wire size, like if I was wiring something in a house with that many amps it would be at least an AWG 3 copper wire and probably a AWG 2 because of distance.

With wires that size, the glow plugs would be hot in 3 seconds.

As for the Autolite plugs here is a post copied from another thread posted today.

i put 8 new autolite glow plugs in my 93f350 to avoid winter problems. 3 weeks later
3 were already burned out. i had a problem getting one out because it swelled up
in the hole and was stuck. i used pb blaster and 3 hours of patience. i switched all
to motor craft and repaired 2 injection lines leaking fuel sometimes,which means
could pull in air and lose prime. now it starts in about 2 seconds at 34degrees
good luck p.s i learned the hard way

Again, I will never recommend Autolite glow plugs and will recommend they not be used.
Post 18 in this thread,
http://www.ford-trucks.com/forums/90...ml#post8204050

I don't have the opinion I do about Autolite glow plugs for no reason.
I read it constantly right here in this forum.
With winter here, many of the people in this forum will not be starting their engines if the glow plugs are dead.
And many of them may be out on temps at or below zero for three hours trying to get one stuck Autolite glow plug out of their head that they installed three weeks ago when it was warmer thinking thay would be good to go all winter after they read your post.
And do believe me, you are the only person posting how great Autolite glow plugs are.
Not sure what the temp is outside right now, but it is below freezing, so I do know where the northern people are coming from when they can't get the engine started and are out in the driveway working on their truck.
So I will still say the same thing to every post you make recommending Autolite glow plugs.
They may be OK in Florida, but most of us are not there.

[Marianna2003]

OK I know you like to zing me, but I will guarantee you that the client did NOT use Autolite 1109s, he used Autolite 1108s. 1108s are single coil unregulated GPs that are called out in the books. Just like the AC12Gs are not called out in the parts books. The problem is the controller is bad. I don’t like playing Russian roulette with my stuff. Use the ones I keep telling you about and you will NEVER melt another set down no matter what happens, Heavy finger or failed controller.fficeffice" />>>

[Dave Sponaugle]

The set of ZD 9's in my engine now have been in there almost 4 years.

Never a swollen tip when I did change them.

And yes my original controller failed with the glow plug on, so I did burn up a complete set of ZD 1A plugs.
And they all threaded right out.

Why change what works?

Incidently last night I saw where someone had posted about how well the Humvee starts when cold.

Sorry but you will never convince me to change.

[Jim Allen]

Interesting discussion. I had nothing but trouble with the glow system in my old 6.2L and about 18 years of no trouble in my '86 Ford, which has a nearly identical system. I replaced the ORIGINAL glow plugs after 18 years in 04. Four had gone but came out OK. I replaced the controller just because.

I won't tell you how many times I replaced controller and glow plugs on the 6.2L (I'm sure I put someone's kid thru college) until I built my own manual system. Kennedy Diesel had some glow plugs that you could hook up to a battery with jumper cables and it would just sit there and glow until the battery was dead. Tried that with some ACs and they could go about 10-15 seconds. Even with the whiz-bang glow plugs, the 6.2L never started as good in cold weather as the Ford. On both trucks, though, just a few seconds of extra glow time really helps a lot... if you have a glow plug that will take it. I'm not actually sure what I put into the Ford in '04. Likely Autolite, but I guess I'll look

[Marianna2003]

Thanks for the come back! When you do check your GPs, please make sure to get the type # as this makes all the difference in the world. As I told Dave, some types of GPs are NOT temperature regulating while others are. The problem is that the parts guys all show a non regulating type in their catalogs because that’s what the manufacturer specifies. The two types I keep talking about were originally made for the Military 6.2 engines. I know this because I worked for the OEM supplier. The engineers didn't want to use the regulating type because they heat slower than the non-regulating type. This is fine in a system that is working properly, but its like playing Russian roulette with a single shot when something fails. fficeffice" />>>
>>

[Fishin76]

I never hear anyone rag on Bosch's Gp's. the difference is that the AL 1108's are 6v Gp's and the 1109's are 10.5 - 12v. I'm kinda leaning toward 80034's. (bosch calls out 80024's for the 6.9). the 80034's are self regulated, 11v gp's. for a 6.2 cheby. ( also found in HV's) They are way cheaper too. Amazon has them for 8.89, with a 3 year warranty. Someone on here did a test of a bunch of these plugs, 80034's never burnt up or swelled at 5 min of glow time!

[Marianna2003]

Fishin76, They are dual coil, which means there are two coils in series. A heating coil and a positive temperature coefficient coil whose resistance increases as the temperature increases. They are designed to heat to around 600 to 700 deg F and no hotter.

[Fishin76]

I'm not sure what your telling me here. I understand about self regulating GP's. (yes, the bosch 80034's are of that type, but the called out 80024's are not. I have not seen a 6v self regulating plug yet. Are you telling me that I can apply 12v to a 6v self regulating, and not burn it up? Are the 1109's 6v or 12v?

[Marianna2003]

You can apply 12V to the 1109s and they will heat up as stated and not burn up. To be honest with you, I don't know where the 6 volt and 12 volt ratings come from. If you use a glow plug on a 12 volt system, I'd call it a 12 volt GP. Some are slower than others, maybe thats what the ratings are about.

[Fishin76]

Autolite themselves rated the 1107s (which cross for ZD1-A's) at 6v and 53W. Go to the website and see for yourself. click parts catalog and type in 1107. look at the specs.

According to the catalog I can use 1115's too. they are 11v 80w (unregulated also)

I'd like to know why you say the 1109's vs the 1110's vs 1106's...... Specs from autolite below.

1109's 5MM Probe Diameter, 11.5V 60W, .250" Spade Terminal Connector, Sheathed Coil

1110's 5MM Probe Diameter, 10V 70W, .250" Spade Terminal Connector, Sheathed Coil

1106's 5MM Probe Diameter, 11V 75W, .250" Spade Terminal Connector, Sheathed Coil

1112's 5MM Probe Diameter, 10.5V 90W, .250" Spade Terminal Connector, Sheathed Coil

just for reference.. Both cross ref for Motorcraft ZD1-A
1107's 5MM Probe Diameter, 6V 53W, .324" Spade Terminal Connector, Sheathed Coil, Uses a voltage controller
1115's .192" Probe Diameter, 11V 80W, .328" Spade Terminal Connector, Sheathed Coil, Uses a voltage controller

[Fishin76]

I just read off of GM-Diesel.com that the AC60G's are reboxed Beru's. They fit the 6.2 and 6.5 chevy's.

Well if 6.2L and 6.5L GP's fit our truck, we should be able to use AC60G's, right? and still stay beru! These GP's ARE self-regulating!

[Marianna2003]

Originally Posted by Fishin76

I just read off of GM-Diesel.com that the AC60G's are reboxed Beru's. They fit the 6.2 and 6.5 chevy's.

Well if 6.2L and 6.5L GP's fit our truck, we should be able to use AC60G's, right? and still stay beru! These GP's ARE self-regulating!

You are absolutly correct. the working end of the Gps for the 6.2 GM and 6.9 IH are indentical. The threads are shorter on one of them,but still longf enough to work in either engine.

[johnboggs21]

I dont care what anyone says about other brands of glow plugs, I will always use motorcraft plugs. I have never heard of anyone having to pull the head because of a broken tip that used the motorcraft plugs. I say don't fix what aint broke.

[Marianna2003]

I understand diehards, Just trying to let people know that there are some more durable plugs out there that they can use. Since you will be paying for your errors, use whatever you want. Stick your head in the sand and enjoy the company.