Glow plug luck

[FastPaul 0]

I came across a glow plug today I figered I could mount in the intake manifold,When I came home and opened the hood I was suprized to see there was a spot for one,All I had to do was drill and tap the hole,It fit like it was made for it ,How lucky was that !! 10 seconds it glows 20 seconds it gets smokin HOT,and makes a ton of heat fast, I think It should work well, I'll have to try it in the morning. Figured I'd share the story and some pics.Dose anyone know what the 920 Deisel has for a glow plug set up ?

[ehertzfeld 1]

Paul, doesn't that engine have a compression release? My little one dose. Is yours hard to start?

[FastPaul 0]

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Originally posted by ehertzfeld
Paul, doesn't that engine have a compression release? My little one dose. Is yours hard to start?

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Yes it dose have a compression release and no it starts right up, but I keep it in a warm shop , But it takes up alot of room , I left it out side once when it was about 10% and I had to heat up the intake manifold with a propaine torch to get it going I think this will solve that problem and I'll be able to keep her out in the stable with the rest of them :D If your engine has a spot for a glow plug I have an extra one you can have :D

[ehertzfeld 1]

I'll have to look in the morning. Thankssm03

[BLT 725]

I think all glow plugs are timed to keep the element from burning up.

[Roy 0]

Educate me. I thought the glow plugs went in the combustion chambers??? Is there any danger of the fuel igniting in the intake manifold?

[BLT 725]

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Originally posted by Roy
Educate me. I thought the glow plugs went in the combustion chambers??? Is there any danger of the fuel igniting in the intake manifold?

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With a Diesel there is no fuel going down the intake manifold or plugs in the cylinder oe combustion chambers. BUT if you squirt ether down the down the intake with the plug on, there is a real good chance you birth certificate will be a useless piece of paper.:Y:Y:Y Heated intakes assist those engine equipped with IDI fuel systems. These systems inject fuel into fuel cells that ignite and fire on the piston. While this was an excellent clean burning non turbo charged way of igniting fuel, these are stubborn engines to get running in weather below 40 degrees F. It also reduces the smoke volume until they have warmed up a bit. There was direct injected engine that also needed heat. Detroits 230 HP 8.2 was horrible on start up. You could get them started in cold weather OK but they spewed out so much blue smoke on warm up that you could almost lose a truck. Also you didn't dare drive them until they warmed up a bit as you couldn't see anything in the rear view mirrors.

[FastPaul 0]

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Originally posted by Roy
Educate me. I thought the glow plugs went in the combustion chambers??? Is there any danger of the fuel igniting in the intake manifold?

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Roy , Most do go in the combustion chamber. Some deisel engines have what they call heat ribbons in the intake manifold, As long as you can mix some warm or hot air into the combustion chamber It will help start the motor. There shoulden't be any danger of fuel in the intake as a deisel engine is fuel injected in the combustion chamber. Only air goes through the intake This glow plug really produces quite a bit of heat, I'll test it tomorow and let you know how it works.

[UCD 14]

Paul if you look at the wiring diagram i posted for the 7790 10ld-400-2 it shows a manifold heater. Where you installed it is the location where the manifold heater is located on mine. How much do you want for your spare one? Mine has not worked in a while. Instructions say to operate for 10 seconds. Do not operate while cranking.

[BLT 725]

PAul you are correct. I keep forgetting the smaller engines. The stuff I work with will pretty much start at zero and electronic fuel injection has changed that whole arena.

[PatRarick 1]

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Originally posted by BLT
I think all glow plugs are timed to keep the element from burning up.

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Bob, on my Oliver 88 diesel and also my White 2-105 (Perkins 354), the manifold heaters are similar to the one Paul shows. They do not run on a timer. They're run by a momentary switch like a starter button. A little decal on the dash tells you how many seconds to hold the button according to the temperature before you crank the engine. My Minneapolis-Moline UB diesel is a completely different story. It has a "flamethrower" manifold heater. A furnace type nozzle with a long electrode spark plug, much like a torpedo heater. A little hand pump on the dash to provide fuel pressure, drawing fuel from the tractor's fuel tank. You flip the coil on and pump like mad. The faster you pump, the bigger the roar you hear in the manifold as the more fuel and spray efficiency. On this type, you run the heater alone first to heat the manifold. Then crank the engine with the heater running to draw the heated air into the cylinders and keep the manifold warm. The heater burns enough oxygen that there isn't enough to start the tractor with the heater running. Once you've drawn the heated air into the cylinders, you stop pumping, start the engine and shut of the heater ignition.

[BLT 725]

Pat you are right and at one time Detroit had air box heaters that used spark plugs and injected fuel oil. And on the big bore Kahlenberg marine engines, you had heating bars for each clylinder that you used a blow torch to heat up and try to get each on cherry orange. On current engines now like VM Motori, they have a module that has a timer and will shutoff. Being that I been always involved with new, you tend to forget what was there yesterday. And with todays emission requirements, I wish at time that I could roll back to yesterday at times.

[Roy 0]

I learned something due to all the responses. :) Thanks to all,

[Ketchamized 2]

Paul, Can those glow plugs be installed on an airbox of a 10hp engine so that the hot air goes into the carb directly? If not, are these installable at all on the 243431 (10hp B&S) engines?

[dlcentral 1]

My 920s have manifold heaters and fuel oil going in the heaterto get preheated also.From oem,sm02You cant give these things enough heat in winter to get started.When ambient temps are below lets say 20 deg. they have a hard time making enough heat on there own for ignition.

[BLT 725]

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Originally posted by Ketchamized
Paul, Can those glow plugs be installed on an airbox of a 10hp engine so that the hot air goes into the carb directly? If not, are these installable at all on the 243431 (10hp B&S) engines?

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Erick think of that glow plug as a perpetual flame. You would be asking for trouble. BLT

[Ketchamized 2]

Bob, Thanks, I've never heard of them. Learn new things everyday. :o)

[FastPaul 0]

Het guys , I was showing my son the glow plug set up today,The tractor was still in the warm shop,I said look at this I held the switch for about 30 seconds and said feel the manifold,Wow Dad that really made that hot fast, I went to start it figuring it would fire right up,But it woulden't start? I was surprized like something happened to the engine it just huffed black smoke, I took the air cleaner off and it finnaly started ??? Put it out side for about 5 hours Held the glow plug fot 10 seconds ( like the book recomends) Presto she fired right up like the tractor was warm ?? After thinking about it ,I think by holding the switch for 30 seconds It must have burnt up all the oxegen in the intake and thats why it woulden't start, Dose this make sense or was it just a fluke ?? I diden't think a hot electric coil would eat up the oxegen. Am I wrong, what do you guys think??

[ehertzfeld 1]

I think that there has to be something to consume the oxygen. I don't think a hot coil could do that. Is the air filter clogged a bit? Maybe between the heat of the shop and the coil, somthing in the air filter expanded and clogged it up solid. OH BTW My intake is totally different. I have no place that I can see were a plug would or could go. I'll try to remember to snap a picture. Thanks anyway.

[dlcentral 1]

I have a messed up injector pump on 1 of my 920's so to get it started RIGHT AWAY,and it fires up instantly no matter what the temp is I just aim a lit propane torch in intake without an air filt while cranking it over. as winter use really one isnt needed. That trick works for me,and is definatley not recommended I know,, BUT for sure you cant do that in a gass job or you might be in the hospital!,,I do NOT use the manif htr at all.:O