Sparkplug torque values

[Roger]

I've spent the better part of an hour and a half on the net searching,
tried to get into the ABS site which appeared to be down, spend
several hours searching through what manuals I have, but I couldn't
find the torque required for the spark plugs in an IO-470N.

I did find the torque values for about any bolt size you'd ever find
on an airplane (wet or dry) though<:-))

Any one have that, or a URL for the source?

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

[Philippe]

Roger wrote:

> I've spent the better part of an hour and a half on the net searching,
> tried to get into the ABS site which appeared to be down, spend
> several hours searching through what manuals I have, but I couldn't
> find the torque required for the spark plugs in an IO-470N.

For all sparks

diameter
18mm
- in steel : 34-45N.m / 3.5-4.5kg.m / 25.3-32.5lb.ft
- in Al alloy: 35-40N.m / 3.5-4.0kg.m / 25.3-28.9lb.ft

14mm
- in steel : 25-35N.m / 2.5-3.5kg.m / 18.0-25.3lb.ft
- in Al alloy: 25-30N.m / 2.5-3.0kg.m / 18.0-21.6lb.ft

12mm
-in steel : 15-25N.m / 1.5-2.5kg.m / 10.8-18.0lb.ft
- in Al alloy: 15-20N.m / 1.5-2.0kg.m / 10.8-14.5lb.ft

10mm
- in steel : 10-15N.m / 1.0-1.5kg.m / 7.2-10.8lb.ft
- in Al alloy: 10-12N.m / 1.0-1.2kg.m / 7.2-8.7lb.ft

8mm
- in Al alloy: 8-12N.m / 0.8-1.0kg.m / 5.8-7.2lb.ft



--
Pub: http://www.slowfood.fr/france
Philippe Vessaire Ò¿Ó¬

[RST Engineering]

....tug ... tug ... right about ... THERE.

BTW, that copper loaded goose grease is so far superior to the black
graphite stuff it isn't even funny. Just FYI


Jim




"Roger" > wrote in message
...
> I've spent the better part of an hour and a half on the net searching,
> tried to get into the ABS site which appeared to be down, spend
> several hours searching through what manuals I have, but I couldn't
> find the torque required for the spark plugs in an IO-470N.

[Jim Carriere]

RST Engineering wrote:

> ...tug ... tug ... right about ... THERE.

I thought it was tighten until it strips, then back off a quarter turn?

:)

[[email protected]]

RST Engineering wrote:
> ...tug ... tug ... right about ... THERE.
>
> BTW, that copper loaded goose grease is so far superior to the black
> graphite stuff it isn't even funny. Just FYI

A former cow-orker had an old Stinson on which, at some point
in time, the threads had been stripped and repaired with helicoils.
He used _Never Seize_ (which I think is grease with powdered nickel)
on his sparkpluck threads and the heli coils backed out.

Dunno if the Never_Seize was to blame, but he said the problem
didn't repeat after he cleaned it off.

--

FF

[Dan, U.S. Air Force, retired]

Jim Carriere wrote:
> RST Engineering wrote:
>
>> ...tug ... tug ... right about ... THERE.
>
>
> I thought it was tighten until it strips, then back off a quarter turn?
>
> :)

That's on aluminum blocks. On iron you tighten until the plug breaks,
remember how it felt and don't tighten so much next time.

Dan, U.S. Air Force, retired

[Dan, U.S. Air Force, retired]

wrote:

>
> RST Engineering wrote:
>
>>...tug ... tug ... right about ... THERE.
>>
>>BTW, that copper loaded goose grease is so far superior to the black
>>graphite stuff it isn't even funny. Just FYI
>
>
> A former cow-orker had an old Stinson on which, at some point
> in time, the threads had been stripped and repaired with helicoils.
> He used _Never Seize_ (which I think is grease with powdered nickel)
> on his sparkpluck threads and the heli coils backed out.
>
> Dunno if the Never_Seize was to blame, but he said the problem
> didn't repeat after he cleaned it off.
>
In F-4Es we used Philips® milk of magnesia. It really works.

Dan, U.S. Air Force, retired

[Matt Whiting]

Dan, U.S. Air Force, retired wrote:
> wrote:
>
>>
>> RST Engineering wrote:
>>
>>> ...tug ... tug ... right about ... THERE.
>>>
>>> BTW, that copper loaded goose grease is so far superior to the black
>>> graphite stuff it isn't even funny. Just FYI
>>
>>
>>
>> A former cow-orker had an old Stinson on which, at some point
>> in time, the threads had been stripped and repaired with helicoils.
>> He used _Never Seize_ (which I think is grease with powdered nickel)
>> on his sparkpluck threads and the heli coils backed out.
>>
>> Dunno if the Never_Seize was to blame, but he said the problem
>> didn't repeat after he cleaned it off.
>>
> In F-4Es we used Philips® milk of magnesia. It really works.

It must as I've never heard of an F-4E with indigestion! :-)


Matt

[jerry wass]

RST Engineering wrote:
> ...tug ... tug ... right about ... THERE.
>
> BTW, that copper loaded goose grease is so far superior to the black
> graphite stuff it isn't even funny. Just FYI
>
>
> Jim I take a little artists brush & paint that coppercoat all over
the insulator too--makes'em easier to see if you drop them in the dirt.
>
>
>
>
> "Roger" > wrote in message
> ...
>
>>I've spent the better part of an hour and a half on the net searching,
>>tried to get into the ABS site which appeared to be down, spend
>>several hours searching through what manuals I have, but I couldn't
>>find the torque required for the spark plugs in an IO-470N.
>
>
>

[jerry wass]

jerry wass wrote:

>
>
> RST Engineering wrote:
>
>> ...tug ... tug ... right about ... THERE.
>>
>> BTW, that copper loaded goose grease is so far superior to the black
>> graphite stuff it isn't even funny. Just FYI
>>
>>
>> Jim I take a little artists brush & paint that coppercoat all over
>
> the insulator too--makes'em easier to see if you drop them in the dirt.

on another note, the nickel stuff is really great---Back in the gas
drillin boom days, the rigs used that stuff out of 5 gallon pails,
mopped it on the drill stem joints with mops. the nickel was suspended-
(immediately after stirring) in a very heavy chloro-ethylene solvent.
anybody need a gallon ??
>
>>
>>
>>
>>
>> "Roger" > wrote in message
>> ...
>>
>>> I've spent the better part of an hour and a half on the net searching,
>>> tried to get into the ABS site which appeared to be down, spend
>>> several hours searching through what manuals I have, but I couldn't
>>> find the torque required for the spark plugs in an IO-470N.
>>
>>
>>
>>

[Roger]

On Mon, 04 Jul 2005 12:06:06 +0200, Philippe >
wrote:


Thanks for the information Philippe

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

>Roger wrote:
>
>> I've spent the better part of an hour and a half on the net searching,
>> tried to get into the ABS site which appeared to be down, spend
>> several hours searching through what manuals I have, but I couldn't
>> find the torque required for the spark plugs in an IO-470N.
>
>For all sparks
>
>diameter
>18mm
>- in steel : 34-45N.m / 3.5-4.5kg.m / 25.3-32.5lb.ft
>- in Al alloy: 35-40N.m / 3.5-4.0kg.m / 25.3-28.9lb.ft
>
>14mm
>- in steel : 25-35N.m / 2.5-3.5kg.m / 18.0-25.3lb.ft
>- in Al alloy: 25-30N.m / 2.5-3.0kg.m / 18.0-21.6lb.ft
>
>12mm
>-in steel : 15-25N.m / 1.5-2.5kg.m / 10.8-18.0lb.ft
>- in Al alloy: 15-20N.m / 1.5-2.0kg.m / 10.8-14.5lb.ft
>
>10mm
>- in steel : 10-15N.m / 1.0-1.5kg.m / 7.2-10.8lb.ft
>- in Al alloy: 10-12N.m / 1.0-1.2kg.m / 7.2-8.7lb.ft
>
>8mm
>- in Al alloy: 8-12N.m / 0.8-1.0kg.m / 5.8-7.2lb.ft

[Roger]

On Mon, 4 Jul 2005 08:25:43 -0700, "RST Engineering"
> wrote:

>...tug ... tug ... right about ... THERE.

That's why there's such a big market for Helicoils<:-))
>
>BTW, that copper loaded goose grease is so far superior to the black
>graphite stuff it isn't even funny. Just FYI

Amen!

Thanks Jim

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com
>
>
>Jim
>
>
>
>
>"Roger" > wrote in message
...
>> I've spent the better part of an hour and a half on the net searching,
>> tried to get into the ABS site which appeared to be down, spend
>> several hours searching through what manuals I have, but I couldn't
>> find the torque required for the spark plugs in an IO-470N.
>

[Roger]

On Mon, 04 Jul 2005 18:19:32 -0500, jerry wass >
wrote:

>
>
>RST Engineering wrote:
>> ...tug ... tug ... right about ... THERE.
>>
>> BTW, that copper loaded goose grease is so far superior to the black
>> graphite stuff it isn't even funny. Just FYI
>>
>>
>> Jim I take a little artists brush & paint that coppercoat all over
>the insulator too--makes'em easier to see if you drop them in the dirt.

Yah, but if you drop them all in the dirt you'd have to do a new W&B
sheet.

When I was working for a living (before going back to college and
becoming a computer guru) we used a high pressure grease that is meant
for handeling high loads as low speeds. It was affectionately
referred to as "Bear ****".

I'll swear the stuff was alive. I don't know how anything so thick
could move so fast. Get a spec of the stuff on you and by the time
you gave up trying to get it off, it seemed like it covered half your
body.

I believe it had Beryllium Dioxide in it, but it may have been
Graphite. What ever it was black! I have a whole carton of BR2-S
(Beryllium Dioxide grease) in grease gun cartridges. It's Gray and a
whole lot easier to get off, but it still gets on every thing you'll
touch for the next two days. <:-))

I used to be able to get 10 Oz tubes of DC-4 and DC-5 compound for a
buck each. The high temperature, red, Silicon RTV (TM) was about the
same in large tubes as well. Unfortunately the tubes I had left seem
to be a bit *firm* when squeezed. (it's only about 10 years past
their shelf life)

Oh, yah... I pulled the plugs and every bottom plug had those little
beads of lead in them. The stuff was just laying loose, minding its
own business with the exception of one plug on the right mag which had
a lot of the stuff in it. (Right mag was the one that failed the run
up) None of the electrodes were shorted, but I'd imagine the
turbulence in there with the engine running would put that stuff right
where you wouldn't want it.

The plugs are nearly new and look good.
At any rate, with all the rain we had and heavy haze tonight, I didn't
get a chance to run it up, but I did clean the bugs off the wings,
prop, and cowl. (I keep the windshield clean)

The old gal is almost clean enough to take up to the ramp for a wash
job.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

>>
>>
>>
>>
>> "Roger" > wrote in message
>> ...
>>
>>>I've spent the better part of an hour and a half on the net searching,
>>>tried to get into the ABS site which appeared to be down, spend
>>>several hours searching through what manuals I have, but I couldn't
>>>find the torque required for the spark plugs in an IO-470N.
>>
>>
>>