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#11
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Mystery Nut--Anyone Identify?
Matt Ion > wrote in
news:rXIag.172150$WI1.82189@pd7tw2no: > Elle wrote: >> Can anyone please identify the nut pictured at the following >> site? >> >> http://home.earthlink.net/~honda.lioness/id16.html > > That would be TeGGeR... oh wait, wrong picture Whaaaat? I resemble that remark. >:^Þ It's an exhaust manifold nut. Looks like part of the stud is still in it too, so that's broken. Remove the front heat shield for the exhaust manifold and have a look at all the studs. -- TeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
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#12
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Mystery Nut--Anyone Identify?
"TeGGeR®" wrote:
> > Matt Ion > wrote in > news:rXIag.172150$WI1.82189@pd7tw2no: > > > Elle wrote: > >> Can anyone please identify the nut pictured at the following > >> site? > >> > >> http://home.earthlink.net/~honda.lioness/id16.html > > > > That would be TeGGeR... oh wait, wrong picture > > Whaaaat? I resemble that remark. >:^Þ > > It's an exhaust manifold nut. Looks like part of the stud is still in it > too, so that's broken. > > Remove the front heat shield for the exhaust manifold and have a look at > all the studs. > I also thought it looked like an exhaust manifold nut. The question remains though, how did it get under the dash? Was Elle under the dash recently and unknowingly transferred the nut there? Eric |
#13
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Mystery Nut--Anyone Identify?
Elle wrote:
> Can anyone please identify the nut pictured at the following > site? > > http://home.earthlink.net/~honda.lioness/id16.html > > It's head is 12 mm across. It has some sort of locking > mechanism. It sheared off its stud, presumably due to age > and the vibrations that resulted while I was grinding off > the lower inboard control arm bolt on the driver's side. > Part of the stud appears in the photo. At the end of the > day, I found it beneath the cardboard on which I lie to do > this work. > > I will be inspecting the engine compartment to see if I can > see a similar one. > i would put money on it being a stud/nut for the exhaust system. either the a/b/c pipes, the catalyst, or possibly the exhaust manifold. its got the same patina of a nut/stud thats been in high heat all its life. |
#14
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Mystery Nut--Anyone Identify?
>From that photo, looks like one of those Castle nuts or Self-locking
nuts from the front suspension. There are 4 identical sized nuts (all 12x1.25 mm) but with different torque settings (page 18-8 of service manual; 1991 Civic). One on top of the strut housing, and two at the bottom, and another one at the end of the control arm. If you need the diagram, do drop a line, and I will scan the page and send it over. Hope this helps...... Elle wrote: > Can anyone please identify the nut pictured at the following > site? > > http://home.earthlink.net/~honda.lioness/id16.html > > It's head is 12 mm across. It has some sort of locking > mechanism. It sheared off its stud, presumably due to age > and the vibrations that resulted while I was grinding off > the lower inboard control arm bolt on the driver's side. > Part of the stud appears in the photo. At the end of the > day, I found it beneath the cardboard on which I lie to do > this work. > > I will be inspecting the engine compartment to see if I can > see a similar one. |
#15
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Mystery Nut--Anyone Identify?
"Eric" > wrote in message ... > "TeGGeR®" wrote: >> >> Matt Ion > wrote in >> news:rXIag.172150$WI1.82189@pd7tw2no: >> >> > Elle wrote: >> >> Can anyone please identify the nut pictured at the >> >> following >> >> site? >> >> >> >> http://home.earthlink.net/~honda.lioness/id16.html >> > >> > That would be TeGGeR... oh wait, wrong picture >> >> Whaaaat? I resemble that remark. >:^Þ >> >> It's an exhaust manifold nut. Looks like part of the >> stud is still in it >> too, so that's broken. >> >> Remove the front heat shield for the exhaust manifold and >> have a look at >> all the studs. >> > > I also thought it looked like an exhaust manifold nut. > The question remains > though, how did it get under the dash? Was Elle under the > dash recently and > unknowingly transferred the nut there? No; miscommunication. My Civic was on ramps, and I was under the car, grinding out one of the control arm bolts, for a long time (see other thread). About mid-day I moved the cardboard and wood planks on which I lie for this sort of work and found this lock-nut (with, as Tegger said, part of a stud attached). I figured the grinding vibrations knocked it free. I'll get a closer look tomorrow. Car's driving okay, all things considered (especially all my monkeying with everything). Thanks, folks, this will save me a lot of time. |
#16
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Mystery Nut--Anyone Identify?
> wrote
> >From that photo, looks like one of those Castle nuts or > >Self-locking > nuts from the front suspension. There are 4 identical > sized nuts (all > 12x1.25 mm) Is that 12 mm the nominal diamter of the suspension bolts onto which these suspension self-locking nuts fit, though? That sounds more likely. The 12 mm I mention for this mystery nut is the nut head measurement. That is, a 12 mm socket fits it. The nominal diameter of its corresponding stud appears to be 6 mm or 8 mm. (The stud diameter is a little hard to measure while it's stuck in the nut.) Thanks for the input. I'll update tomorrow, hopefully. |
#17
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Mystery Nut--Anyone Identify?
Elle wrote:
> > Is that 12 mm the nominal diamter of the suspension bolts > onto which these suspension self-locking nuts fit, though? > That sounds more likely. > > The 12 mm I mention for this mystery nut is the nut head > measurement. That is, a 12 mm socket fits it. The nominal > diameter of its corresponding stud appears to be 6 mm or 8 > mm. (The stud diameter is a little hard to measure while > it's stuck in the nut.) > Most 12 mm nuts on a Honda are threaded for an 8 x 1.25 mm bolt. Eric |
#18
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Mystery Nut--Anyone Identify?
Hello: I just checked the stud/nut diameters with a caliper after your
and Elle's posts. Yes, you two are correct: the 12x1.25 mm that Honda manual refers to is the stud diameter and not the nut diameter (should have remembered this...my apologies). For the 12 mm diameter nut Elle refers to, looks like the corresponding stud size is 8 mmx1.25 mm as Eric correctly suggests. If yours came from the front suspension, there is just one such self-locking-nut according to the front suspension diagram; 8x1.25 mm, stabilizer bar /lower arm attachment. According to the diagram, in the front suspension, there are 6 of 12x1.25 mm self-locking/castle nuts (missed two of these in my earlier post!) 5 of 10x1.25 mm 1 of 8x1.25 mm; all self-locking or castle nuts. As Eric and you indicate correctly, the 12, 10 or 8 referred to in the diagram are for the stud diameter. |
#19
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Mystery Nut--Anyone Identify?
> wrote in message
oups.com... > >From that photo, looks like one of those Castle nuts or Self-locking > nuts from the front suspension. There are 4 identical sized nuts (all > 12x1.25 mm) but with different torque settings (page 18-8 of service > manual; 1991 Civic). One on top of the strut housing, and two at the > bottom, and another one at the end of the control arm. If you need the > diagram, do drop a line, and I will scan the page and send it over. > Hope this helps...... > That's what it looks like to me - a high-temperature locking nut. Mike |
#20
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Mystery Nut--Anyone Identify?
I took the exhaust manifold shroud off today. It is indeed
an exhaust manifold nut (with broken-off stud stuck in it). It's the one nearest the distributor. I am amazed at how many people (Nasty, Tegger, Eric, SoCalMike) nailed this, and with a fuzzy photo, too. What a phenomenal newsgroup! I see the stud on sale at Majestic online for a couple bucks. I reckon I'll see how my ball joint castle nut/stud work goes today and then make a trip to the junkyard. I think the front desk man and I could become an item... :-) Much obliged for everyone's input. This all is valued work to me, and I couldn't do it nearly as efficiently (and at some points, not at all) without the extensive experience of so many of you. |
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