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#1
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Sparkplug torque values
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 |
#2
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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¬ |
#3
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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 |
#4
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....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. |
#5
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RST Engineering wrote:
...tug ... tug ... right about ... THERE. I thought it was tighten until it strips, then back off a quarter turn? |
#6
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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 |
#7
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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 |
#8
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#10
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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. |
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