This has prolly been asked before, but I didn´t find anything searching.......

My torque wrench isn´t big enuff to tighten the crank bolts on my motor. I need 80 ft-lbs. Other than the obvious solution of buying a bigger torque wrench, what is the collective experience with more "home-grown" methods??

I´ve done the 5 pound bag of sugar on a 10 foot stick method. Is this OK??
Are ther other ways to get there from here??

TIA

EDIT: The above is merely an example. So before anyone pipes up with:

"Hey retard, a 5 pound weight at 10 feet results in 50 ft-lbs"

Fawk off!!!:flipoff2:

I can't see why you wouldn't want to spend <$50 for a decent torque wrench to rebuild your >$500 motor.

Doncha think the crank bolt qualifies for the 'right tool for the job' expense?

Take a good guess. 80 ft-lbs is about what you tighten a lug nut to. It doesn't have to be perfect. :flipoff2:

Originally posted by rusted
I can't see why you wouldn't want to spend <$50 for a decent torque wrench to rebuild your >$500 motor.

Doncha think the crank bolt qualifies for the 'right tool for the job' expense?


If I lived where you live, I´d do just that. Here, a decent torque wrench is EXPENSIVE........

Originally posted by Bad Karma
Take a good guess. 80 ft-lbs is about what you tighten a lug nut to. It doesn't have to be perfect. :flipoff2:

Then ya think it´d be OK just to lay the block on its side, put a BF breaker bar on the crank bolts and jump up and down on the end of the bar?!?!?:p

COME AWWWN, anyone got another suggestion or opinion?!?!?

Are you really that fawking helpless that you cant tighten a bolt to about 80 ft-lbs without a torque wrench??? It ain't rocket science, dude, just do it. Or if you're so concerned with doing it the "right" way, buy the proper goddamned torque wrench.

:rolleyes:

buy a freakin torque wrench. geeze, a deflecting beam torque wrench rated for 10-150 ftlbf is about $25 :rolleyes:

if you really want to save $15, get an extension that is twice as long as your torque wrench. with that attached, actual torque will be twice indicated torque.

You could use a known length bar and a spring scale (like a fish scale). Tighten it by hand / feel, and check periodically with the scale??

Don't worry - some of these folks have never been out of their own state - much less to Brazil

Originally posted by Bad Karma
Are you really that fawking helpless that you cant tighten a bolt to about 80 ft-lbs without a torque wrench??? It ain't rocket science, dude, just do it. Or if you're so concerned with doing it the "right" way, buy the proper goddamned torque wrench.

:rolleyes:

No, it´s not rocket science, but it is an aluminum block......

Decent torque wrench = 10% of one month´s take-home wages...

BTW, I have a VERY well paying job. Torque wrenches are EXPENSIVE. Period..........

Originally posted by WillyPete
buy a freakin torque wrench. geeze, a deflecting beam torque wrench rated for 10-150 ftlbf is about $25 :rolleyes:



Where??? Fawking Sears??? Funny, there just doesn´t seem to be a store "handy" at this moment...:rolleyes:


Originally posted by WillyPete
if you really want to save $15, get an extension that is twice as long as your torque wrench. with that attached, actual torque will be twice indicated torque.

Now THAT`S better. Thanks for the suggestion......;)

Originally posted by billj


No, it´s not rocket science, but it is an aluminum block......

Decent torque wrench = 10% of one month´s take-home wages...

BTW, I have a VERY well paying job. Torque wrenches are EXPENSIVE. Period..........

So what does one go for down there? Do I need to start exporting them? :D

But really, I'm sure if you asked someone would get one for you and send it as a "gift" if you know what I mean.

I got mine at sears, it was $130 and goes from 30 to 250 ft. lb. in 1 ft. lb. gradations.

http://www.sears.com/sr/homepages/sears_homepage.jsp

Originally posted by billj
Where??? Fawking Sears??? Funny, there just doesn´t seem to be a store "handy" at this moment...:rolleyes:


I may be a newb, but it would seem to me you have access to the fawkin 'net. I'll BET there's a tool shop that you could order from and have it air-mailed down... But that's just me.

Otherwise, you can just he Mark I Calibrated Elbow and quit 'yer whinin'

Originally posted by sceep
why isnt your wrench "big enough". do you mean it doesnt go up to a high enough torque? so can you get 40lb/ft? if so.. fab up an extention. you need to make the wrench longer. add a foot in between the head of your wrench now... to the new head...and you wil double the torque..... get it??


I'm no rocket scientist but I don't see how this can work. If you put an extension on it it will just be easier to pull to the number not actually increase the number.

My torque wrench clicks at the number you set it on, it's gonna kick out at 80 ft lb's no matter if I pull the handle or put a 10 foot cheater bar on it and pull the handle.

Right? Someone smart explain this to me please. :D

Originally posted by MattS


I'm no rocket scientist but I don't see how this can work. If you put an extension on it it will just be easier to pull to the number not actually increase the number.

My torque wrench clicks at the number you set it on, it's gonna kick out at 80 ft lb's no matter if I pull the handle or put a 10 foot cheater bar on it and pull the handle.

Right? Someone smart explain this to me please. :D

you know.. i think your right.... it works the other way around... if you're torqueing to like 500 lb/ft and dont wanna pull that hard... add the extension.. not the other way around.. fawk....deleted.

Originally posted by sceep
you know.. i think your right.... it works the other way around... if you're torqueing to like 500 lb/ft and dont wanna pull that hard... add the extension.. not the other way around.. fawk....deleted.

Now, if you put a fish pull scale on the end of a 2 foot wrench/cheater bar combo and pulled to say 100 lbs and then did the same with a 4 foot bar instead of a 2 I think it would double the tq the bolt receives. But telling how much tq exactly is beyond me!! :D I think that is what you were thinking. ;)

You have several options, some easy, some harder but all cheap.

First off the known length bar/wrench and a fish scale are acceptable. 2 ft bar, 40 lbs pull=80ft/lbs

Next you can take a combination wrench of the correct size then weld a socket of the correct drive size to the open ond of it. Now using a formula that I do not have with me (I bet someone on this board knows it) you can use the length of your lever arm to figure what the torque multiplication is. I know a lot of aviation textbooks have the formula in them....I had to know it at one time to pass my A&P test.

Just do it on the fly and wrench down on the bastids...cheap now but it could be 'spensive latter, but probably not.

Go into your bathroom and grab your weight scale. Place the scale upside down on the torque wrench and let it's own weight rest on the wrench, set the scale to zero. Now push down on the scale with your buddy (who also cannot afford a TW) lying on his back watching the numbers to let you know when you hit 80lbs.

Or you can also push down on your bathroom scale a few times till you hit 80lbs so you know what it feels like, then apply that same amount of pressure to the TW.:D :D

formula? you got 'em :D

Ti=L*F cos X

Ti=torque indicated
L=length of torque wrench
X=angle at which force is applied, in this case, 0 degrees

Ta=Ti((L+A cos Y)/L)

Ta=actual torque
Ti=torque indicated
L=length of torque wrench
A=length of attachment
Y=angle of attachment to torque wrench, usually 0 degrees


there you have it. so if you have a 2 ft torque wrench, and you applied 50 lbs force, you get 100 ft lbs force

now if you add a 2 foot extension parallel to the torque wrench, you will indicate 100 ft lbs with 50 lbs applied, but really be applying 200 ft lbs. make sense?

Originally posted by Scott Mac.


B.S. You just reduced the effort to reach the indicated torque in half.

duh, that's what i said :flipoff2:

1/2 effort for same amount of torque is the same as saying same amount of effort for twice the torque.

mechanical advantage.

if you really want to test it, torque something to say 25 ft lbs with an extension, then take the extension off, and torque it to 50 ft lbs. the torque exerted on the nut will be the same, the gage will just read differently

it's like setting a tach for a v8 when you're running a four banger.

Originally posted by WillyPete
formula? you got 'em :D

Ti=L*F cos X

Ti=torque indicated
L=length of torque wrench
X=angle at which force is applied, in this case, 0 degrees

Ta=Ti((L*A cos Y)/L)

Ta=actual torque
Ti=torque indicated
L=length of torque wrench
A=length of attachment
Y=angle of attachment to torque wrench, usually 0 degrees


there you have it. so if you have a 2 ft torque wrench, and you applied 50 lbs force, you get 100 ft lbs force

now if you add a 2 foot extension parallel to the torque wrench, you will indicate 100 ft lbs with 50 lbs applied, but really be applying 200 ft lbs. make sense?

No, it doesn't, I'm not a math wiz but I do know the frickin' scale doesn't care how long the handle is. The scale is reading force applied at that point. Adding a longer handle only makes it easier for you to add that force. The scale reads the same.

Originally posted by Scott Mac.


The scale reads the same.

By saying scale, I mean the scale on a torque wrench at the fulcrum.

If I misunderstood your post :flipoff2: it's late.

i'm not talkin about adding a cheater bar, i'm talking about an extension at the fulcrum of the wrench. both would multiply the force applied by the wrench, but only something at the fulcrum end would affect the gage.

Like a long crows foot, or a standard extention that would be 90 degs to the handle?

As I remember from my days of aircraft maint the only way to alter the reading of a torque wrench is to add a crows foot, because in doing so you change the fulcrum.

Originally posted by Scott Mac.
Like a long crows foot, or a standard extention that would be 90 degs to the handle?

As I remember from my days of aircraft maint the only way to alter the reading of a torque wrench is to add a crows foot, because in doing so you change the fulcrum.

yep, that's the ticket.

d'oh, i messed up the formula in one of those equations...

Ta=Ti((L+A cos Y)/L)

add length of wrench to length of attachment, not multiply...

Ok, now we're on the same page. I don't think he'd be able to find one of those extensions in Brazil.

Another torque wrench related question. Where do you buy torque wrenches for setting pinion bearing preload with crush sleeve? They should be within the range of 7-30 in.-lbs and should be the type that show torque on a scale (not the ones that you set the torque and then it click when the torque is reached).

Many types of torque wrenches can be found at:
snap-on.com
matcotools.com
mactools.com
and a few at:
sears.com/craftsman

Sears has the 150 ft# beam style for $20. If you have the money for a high dollar aluminum block spend the money on a decent torque wrench.

Matco has part# DR50I, a 3/8 beam type that goes 0-50 inch pounds for $76 that could be used for the pinion preload (they also have other ranges/drives).

And if you want to spend big$ you can go to the dial indicator type for doing the preload.

I have an old 3/8 craftsman beam type that does the job too.

For about $6 you can order the snap-on big catalog on-line. The others may offer that option also. I can usually find a tool truck when I want to and just get a catalog from them (and then the tools).

if its any help i have a friend that can tell the torque by how his elbow feels. this is no shit. if he says its 50 ft lbs,,,,i can put a torque wrench on it and it will be 50 ftlbs. i dont know how he does it,,,,,,but he is very accurate

Originally posted by 4x4man
if its any help i have a friend that can tell the torque by how his elbow feels. this is no shit. if he says its 50 ft lbs,,,,i can put a torque wrench on it and it will be 50 ftlbs. i dont know how he does it,,,,,,but he is very accurate

can he tell you when it's going to rain too? :flipoff2:

Originally posted by Scott Mac.
Ok, now we're on the same page. I don't think he'd be able to find one of those extensions in Brazil.

No, but I mocked up some shite and it worked.

I think..............:p

To all who think I shoulda just went out and put the purchase on a decent torque wrench..........

Trying not to sound crass, I think it might be a good idea for you guys to realize that the world is a LOT bigger than the 48 contiguous States. When it comes to material objects and the ease of purchasing them, Americans have no idea of how easy they have it.

Think of it this way. Would you spend 40% of your weekly take home pay on a tool that you´re likely to use 03 or 04 times and for which you could find a reasonable substitute?? That´s why I "just say no" to this particular purchase...........

Now, please understand that I´m not riding on y´all. After all, I used to be an "ignorant American" as well. But living outside the USA for the last 10 years has given me a certain distance for reflection on both the good and not so good of what it is to be American.

FWIW, there´s a LOT more good than not so good..........;)

Quit yer fawkin crying, if you have it so rough then move back home, otherwise on behalf of all so-called 'ignorant Americans STFU.:rolleyes:

Get a box end wrench. Weld a socket to both ends. Insert the torque wrench you have to the socket that does not match the bolt for the crank.
Before you pull on it tho', make your calculations for the actual force you are going to be placing on the bolt and what the reading is on the torque wrench you have.

Originally posted by Hayraker
Quit yer fawkin crying, if you have it so rough then move back home, otherwise on behalf of all so-called 'ignorant Americans STFU.:rolleyes:

I was not crying.

You are a either an illiterate moron or someone who gets his jollies provoking petty Internet fights over great distances.

Niether is a vary flattering description........... :rolleyes:

Depending upon which it is, go here for help...

www.readingforcomprehension-kindergartenlevel.com

or

www.stopusingyourcomputertomakeyourdickseembigger. com


Alternatively, if niether of these strike your fancy, you can always just.........

fuck off.............

Actually, I am both, thanks for the links.