entropy
Moderator
Posts: 8671
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posted August 28, 2009 10:13 AM
yup same bolt.
i am anal about not mixing up rod stuff.
I don't note total length of the bolts, just measure/document their stretch with applied torque
I have never changed rod bolts, they all have stayed within spec.
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tcchin
Zone Head
Posts: 867
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posted August 28, 2009 10:38 AM
quote:
For the most part, would you say that measuring stretch (with the appropriate tool) is more accurate than said $25 torque wrench?
Stretch is always more accurate than any torque measurement, as it's much more direct. Torque depends on a lot of other stuff that isn't related to preload. However, a beam-type torque wrench is probably more accurate than a click-type because, again, it's more direct. The clutch mechanism on the click-type depends on a lot of stuff that doesn't relate directly to the applied torque.
And note that my procedure is stretch-centric, not torque centric. I use torque and angle to verify that the stretch is providing the preload I expect, but I do not use torque only. The reason I use a beam-type torque wrench is because I can see the torque increase with angle, whereas a click type just stares at you until it clicks. So if you had a bolt that is damaged and can't take the preload that a click-type wrench will apply before clicking, you'll never know until it's too late.
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Shane661
Needs a life
Posts: 11494
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posted August 28, 2009 10:41 AM
I always carry a couple of beam type wrenches with me to the track. Less likely to fail.  I like the feedback that they give, and they are inexpensive to boot! 
Good information, thanks.
Shane
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whitehendrix
Zone Head
fails!
Posts: 757
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posted August 28, 2009 06:51 PM
DAMN whys it soooo much!?
shit. i need one for a 636 i have in surgery right now.. wheelie boy killed his motor and it knocks like a jehovah's witness.
now would be the time to have that.
can i rent this from you Karl?
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Duct tape is the handyman's secret
weapon. The black is for formal
occasions. - ZRXDean
ill never own a busa unless
someone gives me one.... and then
ill sell it -KZScott
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tcchin
Zone Head
Posts: 867
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posted August 28, 2009 09:44 PM
Whitey - check out the links I posted on page 1. If you don't need digital, you can get the Lunati and use it as-is for about $30.
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whitehendrix
Zone Head
fails!
Posts: 757
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posted August 30, 2009 01:10 PM
Tim. you're the man.
____________
Duct tape is the handyman's secret
weapon. The black is for formal
occasions. - ZRXDean
ill never own a busa unless
someone gives me one.... and then
ill sell it -KZScott
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VincentHill
Needs a life
Posts: 6520
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posted August 31, 2009 07:22 AM
quote:
I always carry a couple of beam type wrenches with me to the track. Less likely to fail. I like the feedback that they give, and they are inexpensive to boot!
Good information, thanks.
Shane
Shane, you are scaring me again! I did a Lot of reading on Torque Wrenches and found that the clickers are just not that reliable even when you always reset them to Zero after using them. The Beam are a little less accurate and more difficult to use, but they are totally safe and about 3% error so 20 Ft Pounds may be 20.6 or 19.4 or anywhere in between. I can live with that because everything will be in the same spec. I checked a Clicker and found it was 5 pounds off at 40. That is more than 10% and can do damage.
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entropy
Moderator
Posts: 8671
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posted August 31, 2009 08:56 AM
Vincent, i betcha that clicker you tested wasn't a Snap On????
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