[devlpr]

Here's what happen...followed the service manual to the letter! Each step:

Un-screwed the old plug,
Looked inside - Clean - No debris,
Put anti-seize on a new NGK - DCPR8E plug that Ken sent me,
Inserted plug in spark plub socket with extension arm,
Carefully inserted plug down long passage hole in rear cylinder,
Screwed plug in by hand til it stopped,
Got out Torgue-wrench and set it to 86 in-lbs. per service manual,
Tightened lock nut at the bottom of torgue wrench,
Started racketing spark plug,
Getting tighter,
Getting tighter,
THEN..."click" - wrench moves SUPPER easy,
Thought: "something doesn't feel right",
Pulled socket out of hole and there it is - the damn spark plug with no fu*kin thread on it!!!
FU*K!
Looked down hole, sure as sh*t...there's the rest of the plug with the electrode giving me the finger!!!

What the hell did I do wrong!?!

And, what do I do next?

And, how much is that going to cost me?

:banghead:

 

[TexasV-Rod]

86 sounds to me like a lot of torque for a plug.

 

[brentley]

Don't you have a buddy that works for H-D? Maybe he can help you fix it.

 

[groovy V-Rod]

I just saw a Destroyer motor on eBay ! :hidesbeh:

 

[Mitchell]

We'd probably need to see a photo to really understand what you are saying. In my experience, the only real problem is when you strip the threads in the head. Then is tap and helicoil (or new head) time.

If your plug broke, and I have had plugs break before, then you just have to find a way to remove the remaining debris from the hole.

See if you can take a pick of the plug parts that came out of the hole and what's currently in the hole and I'm sure one of our mechanical guru's can fix you right up.

 

[devlpr]

86 sounds to me like a lot of torque for a plug.

SHIT! In the How-to section of the Service Manual it says, 9.7 Nm 86 IN-lbs., in the engine section of manual in torque values table it says 23 Nm 17 FT-lbs!!

 

[TexasV-Rod]

I dunno

 

[devlpr]

I dunno

Is that a typo in the Service Manual?

 

[devlpr]

Not Helping Brentley!!!

 

[devlpr]

 

[brentley]

Not Helping Brentley!!!

um.... don't tighten it that much next time... :angeldev: :angeldev: :angeldev:

Could you put the broken plug back in with some glue/silicone, let it set up and then back the whole thing out?

 

[Jim_nk]

Should be able to use easy out. use an angle drill, drill the center of the plug, use easy out and unscrew the part that is in the head. it is a real tight space to work in but if you take the air box and all the air filter assembly off you should be able to get to it from the top.
good luck

Jim

 

[o2man98]

SHIT! In the How-to section of the Service Manual it says, 9.7 Nm 86 IN-lbs., in the engine section of manual in torque values table it says 23 Nm 17 FT-lbs!!

In my 2003 Service Manual it says 23 Nm (17 ft-lbs) for the spark plugs in both the How-To section and the engine torque value section.

The only place it states 9.7 Nm (86 in-lbs) is for the coil fasteners.

Keep in mind that not all torque wrenches read in-lbs so if you have a ft-lb torque wrench and cranked it to 86 then that was your problem. 86 in-lbs would be about 7 ft-lbs.

 

[sgtrage]

86 sounds to me like a lot of torque for a plug.

86 in lbs isn't much but 86 ft lbs sure is a lot!!

 

[TexasV-Rod]

Keep in mind that not all torque wrenches read in-lbs so if you have a ft-lb torque wrench and cranked it to 86 then that was your problem. 86 in-lbs would be about 7 ft-lbs.

That's kinda what I was thinking... that you cranked it to 86FT-lbs

 

[sammy]

All of my literature states the torque value at 23 Nm (17 ft lbs). If you truly set the torque wrench at 86 in lbs, that is only about 7.2 ft lbs. Are you sure your wrench is not in ft lbs? If you where cranking on it like a lug nut on a car wheel you were most likely at 86 ft lbs.

The problem you have now is to remove the broken spark plug and determine any damage to the head. Is it possible to get a pic of the part of the spark plug that came out? so then we might have an idea of whats left in the head. Then maybe somebody can come up with a solution for removal.

 

[devlpr]

In my 2003 Service Manual it says 23 Nm (17 ft-lbs) for the spark plugs in both the How-To section and the engine torque value section.

The only place it states 9.7 Nm (86 in-lbs) is for the coil fasteners.

Keep in mind that not all torque wrenches read in-lbs so if you have a ft-lb torque wrench and cranked it to 86 then that was your problem. 86 in-lbs would be about 7 ft-lbs.

In my 2005 Service Manual the Newton Meters in the How-to-Section says 9.7 Nm (86 in. lbs.) - p. 1-36, in the Engine section p. 3-7 table it says 23 Nm 17 ft-lbs. Why the difference in Newton Meters?

Here's two stupid questions: How many IN-lbs in a FT-lb? And how many Nm in a FT-lb?

.

 

[Steppenwolf]

12 in-lbs in a ft-lb, just like you might guess

about .74 ft-bs = 1 Nm

Here's a calculator: http://www.boltscience.com/pages/convert.htm

 

[devlpr]

View attachment 86095

View attachment 86096

The tread of the plug literlly twisted off.

 

[devlpr]

12 in-lbs in a ft-lb, just like you might guess

Ok...then it's time for me to go back to 5th grade...

86/12= 7.16667

not 17

I'm I calculating something wrong?

.