Psychic Wednesday???
Some people are slow.
Some people eventually catch on. Some people won't admit it though. Some people will, that is when forced to. Accidently tuned in to Montel and yep, Wednesday is psychic awright. Now... What can one do about a crank pulley bolt that's snapped off? No, I didn't do it! Yes, I inherited the engine (which appears to be good otherwise on strip down). TIA JT (Dreading a trip to the machine shop...) |
Re: Psychic Wednesday???
Grumpy AuContraire <Grumpy@ExtraGrumpyville.com> wrote in news:B9bTh.35458
$VU4.32109@bgtnsc05-news.ops.worldnet.att.net: > Some people are slow. > > Some people eventually catch on. > > Some people won't admit it though. > > Some people will, that is when forced to. > > Accidently tuned in to Montel and yep, Wednesday is psychic awright. > > Now... What can one do about a crank pulley bolt that's snapped off? > > No, I didn't do it! > > Yes, I inherited the engine (which appears to be good otherwise on strip > down). > > TIA > > JT > > > (Dreading a trip to the machine shop...) > Shouldn't be a problem. Try drifting the remnant counter-clockwise with a sharp drift and a hammer. With the bolt head gone, all the torque is off the threads anyway, -- Tegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
"Tegger" <tegger@tegger.c0m> wrote
> Shouldn't be a problem. Try drifting the remnant > counter-clockwise with a > sharp drift and a hammer. > > With the bolt head gone, all the torque is off the threads > anyway, Isn't this counter to the theory (among some of us) that it's rust and debris etc. that result in the ridiculous torque often required to break the pulley bolt free? That is, I thought you for one strongly felt the pulley bolt was not actually in tension to the tune of some 500 ft-lbs. of torque (on some Hondas)? I am not as optimistic that this will come out easily without a lot of drilling. |
Re: Psychic Wednesday???
Tegger wrote:
> Grumpy AuContraire <Grumpy@ExtraGrumpyville.com> wrote in news:B9bTh.35458 > $VU4.32109@bgtnsc05-news.ops.worldnet.att.net: > >> Some people are slow. >> >> Some people eventually catch on. >> >> Some people won't admit it though. >> >> Some people will, that is when forced to. >> >> Accidently tuned in to Montel and yep, Wednesday is psychic awright. >> >> Now... What can one do about a crank pulley bolt that's snapped off? >> >> No, I didn't do it! >> >> Yes, I inherited the engine (which appears to be good otherwise on strip >> down). >> >> TIA >> >> JT >> >> >> (Dreading a trip to the machine shop...) >>--------------------- > Shouldn't be a problem. Try drifting the remnant counter-clockwise with a > sharp drift and a hammer. > > With the bolt head gone, all the torque is off the threads anyway, ----------------------- At least that's true if Mr LockTite wasn't hanging around. 'Curly' |
Re: Psychic Wednesday???
Tegger wrote: > Grumpy AuContraire <Grumpy@ExtraGrumpyville.com> wrote in news:B9bTh.35458 > $VU4.32109@bgtnsc05-news.ops.worldnet.att.net: > > >>Some people are slow. >> >>Some people eventually catch on. >> >>Some people won't admit it though. >> >>Some people will, that is when forced to. >> >>Accidently tuned in to Montel and yep, Wednesday is psychic awright. >> >>Now... What can one do about a crank pulley bolt that's snapped off? >> >>No, I didn't do it! >> >>Yes, I inherited the engine (which appears to be good otherwise on strip >>down). >> >>TIA >> >>JT >> >> >>(Dreading a trip to the machine shop...) >> > > > > > Shouldn't be a problem. Try drifting the remnant counter-clockwise with a > sharp drift and a hammer. > > With the bolt head gone, all the torque is off the threads anyway, > This technique often works except for the fact that this engine while not directly exposed to the weather sat in the car for nearly twelve years in this condition. BTW, when I swapped engines a couple of years ago, (I never noticed this as I had no immediate plans for this engine), the head had been off for the same amount of time and there was "some" rust in the two center cylinders where the pistons were near their lower limit of travel. I assumed the engine was stuck but when I removed the flywheel, I noticed the damned thing turning. It would only do about 1/3 of a revolution due to the rust buildup. Anyway, I put the engine in the back shed encased in a tarp for later activity. Yesterday was that day. It was such a nice day, I backed the Studebaker P/U to the shed door, carried the engine out to the tailgate and sanded (with #80 grit) down the rust in the two center cylinders. Within forty-five minutes, I had it freed up and quite frankly, cannot detect any cylinder damage. I was turning the crank via the flywheel bolts when I noticed the broken bolt in front. I am simply amazed at the elegant engineering that went into this engine design and it's ease of access, etc. Oh, All the pistons have a "impression" for either valve clearance or damage from valve contact which may have been why the car was taken off the road. I'll be attempting the prick punch method of removing the bolt remains this evening. Have a good one! JT |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
Elle wrote: > "Tegger" <tegger@tegger.c0m> wrote > >>Shouldn't be a problem. Try drifting the remnant >>counter-clockwise with a >>sharp drift and a hammer. >> >>With the bolt head gone, all the torque is off the threads >>anyway, > > > Isn't this counter to the theory (among some of us) that > it's rust and debris etc. that result in the ridiculous > torque often required to break the pulley bolt free? > Well, yes and no. From the factory, I would assume that the bolt is tightened to spec which (to me) shouldn't be much more than 150 psi. I only tighten the (much larger) bolt on my Studebakers to 75 psi and have never lost one. Trash and debris would only be a factor if the bolt was removed and re-installed carelessly after the car was delivered. > That is, I thought you for one strongly felt the pulley bolt > was not actually in tension to the tune of some 500 ft-lbs. > of torque (on some Hondas)? > Not me - See above. > I am not as optimistic that this will come out easily > without a lot of drilling. > > If it's gonna come out, it'll be this evening. If it doesn't, I'll let the machine shop tackle it. JT |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
"Grumpy AuContraire" <Grumpy@ExtraGrumpyville.com> wrote
E >> Isn't this counter to the theory (among some of us) that >> it's rust and debris etc. that result in the ridiculous >> torque often required to break the pulley bolt free? >> > > Well, yes and no. > > From the factory, I would assume that the bolt is > tightened to spec which (to me) shouldn't be much more > than 150 psi. I only tighten the (much larger) bolt on my > Studebakers to 75 psi and have never lost one. Trash and > debris would only be a factor if the bolt was removed and > re-installed carelessly after the car was delivered. What's your theory on why Honda automobile pulley bolts are notoriously tight when it comes time to change the timing belt? What year and make is this Honda, anyway? > If it's gonna come out, it'll be this evening. If it > doesn't, I'll let the machine shop tackle it. Be careful, darling older, smarter honda-luvin' brother. |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
"Elle" <honda.lioness@nospam.earthlink.net> wrote in
news:DscTh.136570$_73.86685@newsread2.news.pas.ear thlink.net: > "Tegger" <tegger@tegger.c0m> wrote >> Shouldn't be a problem. Try drifting the remnant >> counter-clockwise with a >> sharp drift and a hammer. >> >> With the bolt head gone, all the torque is off the threads >> anyway, > > Isn't this counter to the theory (among some of us) that > it's rust and debris etc. that result in the ridiculous > torque often required to break the pulley bolt free? > > That is, I thought you for one strongly felt the pulley bolt > was not actually in tension to the tune of some 500 ft-lbs. > of torque (on some Hondas)? > > I am not as optimistic that this will come out easily > without a lot of drilling. > > > at least SOME of the torque will no longer be needed,with compression gone form the assembly. (I'm not optimistic,either;it seems nothing is ever "easy" when working on older cars.) -- Jim Yanik jyanik at kua.net |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
"Jim Yanik" <jyanik@abuse.gov> wrote
> at least SOME of the torque will no longer be needed,with > compression gone > form the assembly. > (I'm not optimistic,either;it seems nothing is ever "easy" > when working on > older cars.) I'd have to think about it more. If it is debris, rust, heat cycling, etc. that causes adhesion over time between the male and female threads, it's a pseudo-torque that's been applied to the bolt. It's like a bolt was tightened to spec //and then// locktite somehow dripped on its threads. If the head shears off, is the torque required to deal with the locktite really going to be less? Not sure. |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
Elle wrote: > "Grumpy AuContraire" <Grumpy@ExtraGrumpyville.com> wrote > E > >>>Isn't this counter to the theory (among some of us) that >>>it's rust and debris etc. that result in the ridiculous >>>torque often required to break the pulley bolt free? >>> >> >>Well, yes and no. >> >>From the factory, I would assume that the bolt is >>tightened to spec which (to me) shouldn't be much more >>than 150 psi. I only tighten the (much larger) bolt on my >>Studebakers to 75 psi and have never lost one. Trash and >>debris would only be a factor if the bolt was removed and >>re-installed carelessly after the car was delivered. > > > What's your theory on why Honda automobile pulley bolts are > notoriously tight when it comes time to change the timing > belt? > > What year and make is this Honda, anyway? > The engine is the original that was in the '83 Civic FE. If you recall, I replaced it with a running motah out of an '81 DX but used all the '83 accessories and attachments. > >>If it's gonna come out, it'll be this evening. If it >>doesn't, I'll let the machine shop tackle it. > > > Be careful, darling older, smarter honda-luvin' brother. > If it's gonna come out, it will do so easy. Otherwise, the whole schmeer will go to the machine shop next week. JT |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
Jim Yanik wrote: > "Elle" <honda.lioness@nospam.earthlink.net> wrote in > news:DscTh.136570$_73.86685@newsread2.news.pas.ear thlink.net: > > >>"Tegger" <tegger@tegger.c0m> wrote >> >>>Shouldn't be a problem. Try drifting the remnant >>>counter-clockwise with a >>>sharp drift and a hammer. >>> >>>With the bolt head gone, all the torque is off the threads >>>anyway, >> >>Isn't this counter to the theory (among some of us) that >>it's rust and debris etc. that result in the ridiculous >>torque often required to break the pulley bolt free? >> >>That is, I thought you for one strongly felt the pulley bolt >>was not actually in tension to the tune of some 500 ft-lbs. >>of torque (on some Hondas)? >> >>I am not as optimistic that this will come out easily >>without a lot of drilling. >> >> >> > > > at least SOME of the torque will no longer be needed,with compression gone > form the assembly. > (I'm not optimistic,either;it seems nothing is ever "easy" when working on > older cars.) > It always seems to be that last bolt or fasterner... <grrrrr> JT |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
Elle wrote: > "Jim Yanik" <jyanik@abuse.gov> wrote > >>at least SOME of the torque will no longer be needed,with >>compression gone >>form the assembly. >>(I'm not optimistic,either;it seems nothing is ever "easy" >>when working on >>older cars.) > > > I'd have to think about it more. If it is debris, rust, heat > cycling, etc. that causes adhesion over time between the > male and female threads, it's a pseudo-torque that's been > applied to the bolt. It's like a bolt was tightened to spec > //and then// locktite somehow dripped on its threads. If the > head shears off, is the torque required to deal with the > locktite really going to be less? Not sure. > > Generally speaking, a bolt/screw that sheared because of over torquing usually comes out pretty easy. The ol' prick punch method usually works best and I strongly recommend to NEVER use an "easy out." If that breaks, you're in deep doo doo... JT |
Re: Psychic Wednesday???
Grumpy AuContraire <Grumpy@ExtraGrumpyville.com> wrote in
news:PrdTh.284544$5j1.237709@bgtnsc04-news.ops.worldnet.att.net: > > > Tegger wrote: >>> >> >> >> >> >> Shouldn't be a problem. Try drifting the remnant counter-clockwise >> with a sharp drift and a hammer. >> >> With the bolt head gone, all the torque is off the threads anyway, >> > > > This technique often works except for the fact that this engine while > not directly exposed to the weather sat in the car for nearly twelve > years in this condition. Ooh. That could complicate things. However...an air chisel will still drive it around very nicely even if corroded. Any garage with air tools should be able to do this for you. Unless it's really caked up, the air chisel should spin it off in seconds. > > Oh, All the pistons have a "impression" for either valve clearance or > damage from valve contact which may have been why the car was taken > off the road. Check the crank bearings. Excessive wear will allow the pistons to travel too far upwards. IF the pistons are contacting the valves, the valves will almost certainly be bent. -- Tegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
"Elle" <honda.lioness@nospam.earthlink.net> wrote in
news:8AdTh.20514$PL.7720@newsread4.news.pas.earthl ink.net: > "Grumpy AuContraire" <Grumpy@ExtraGrumpyville.com> wrote > E >>> Isn't this counter to the theory (among some of us) that >>> it's rust and debris etc. that result in the ridiculous >>> torque often required to break the pulley bolt free? There's no "theory" involved. The cause is simple embedment. Not only have I been told this by engineers whose specialty is fasteners, but HONDA SAYS SO, TOO: http://www.tegger.com/hondafaq/misc/hsn_feb-93.pdf -- Tegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Re: Pulley Bolt Snapo Snafu [was Re: Psychic Wednesday???]
"Tegger" <tegger@tegger.c0m> wrote
> The cause is simple embedment. > > Not only have I been told this by engineers whose > specialty is > fasteners, We already went over this, and the guy was not absolutely sure. > but HONDA SAYS SO, TOO: > http://www.tegger.com/hondafaq/misc/hsn_feb-93.pdf This only says two to three times the installation torque may be required to remove the bolt, not why. I am not rejecting the theory. I am saying I don't know for sure the cause. |
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