glow plugs failure temperatures

[richard jones]

I finished the 3rd phase in my glow plug study late 2013, I measured at what

temperature the glow plug wire will fail, I had 83 glow plugs I was going to

test, however a large number of these were not representative of what the

majority of boaters run and the cost would have been a little pricey, so I wound

up only testing 23 different glow plugs.

So, your mission, if U accept, is to guess the hottest temperature, of all the

plugs tested, that only 1 glow plug reached before it failed.

He who guesses the closes, wins a free bag of blown plugs.

good luck.

mobydickk

 

[seaducerpete]

500 degrees

 

[JeremyEdge]

135

 

[dave roach]

625

 

[Glenn Gates]

Let me guess, the OD 89 or 289 were the last to fail

 

[dwilfong]

Dick where are you measuring the temp?

On the outer body of the plug?

As far as failure are we talking seal or element?

Need to know the rules to play the game.

 

[Walt Barney]

k & b hp @ 900* and you can donate the blown plugs to the lake gods...

 

[richard jones]

Let me guess, the OD 89 or 289 were the last to fail

nope

moby

 

[richard jones]

Dick where are you measuring the temp?

On the outer body of the plug?

As far as failure are we talking seal or element?

Need to know the rules to play the game.

element only, at the end of the coil, just before it connects to the ground, would not make much sense to measure the body as the body would act as aheat sink and temps would not be relative.

As far as blowing seals, I remember when we started running CMB 90 engines, it did not matter what glow plug

we ran, as soon as we leaned the engine down for good RPM's the seal would blow, the only difference was when we ran the Rossi #9, because it's such a

cold plug, when the plug blew it would black hole the plug, taking out everything except the plug body. It took me a few years to figure out the problem was because of the small carb, and way to small of spray bar on these engines.

Moby

 

[Jack ODonnell]

So what's the answer ??

 

[Brandon Atwell]

MC-59

350?

 

[shoboat]

Dick,

Rossi#9 would be my pick also.

Interesting material as usual,

Mark Sholund

 

[anthony_marquart]

well come on,.. what's use of doing the test if your not going to tell us the answer? I need some good plugs..

 

[dr gary turner]

I would vote for Rossi 9. I have several. The wire looks like the springs in Mercedes!!

 

[richard jones]

well come on,.. what's use of doing the test if your not going to tell us the answer? I need some good plugs..

Hay Anthony, I miss all the boaters and all the fun races when we raced around the Midwest, been watching your posts on problems with your boat, hope the bearings fix it.U posted U need some "good plugs", have U been using bad plugs? What plugs have U been using would give me better information.

moby

 

[Jack ODonnell]

Again give us some answer's

 

[richard jones]

So what's the answer ??

Jack, since U are a manufacturer, I thought this would be easy for your company to answer regarding your glow plug line.moby

 

[Jack ODonnell]

Your the one that did the test. I would just like to here your results

 

[dwilfong]

2500F +/- 150F

Are you using a gun or calculations with the gizmo?

 

[RaceMechaniX]

I guess around 2900F. I would hazard a guess most glow plug failures are not temperature related, but temperate plus mechanical stress of combustion. So it heats up to a plastic state and breaks.

TG