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Unread 12-25-2013, 05:49 PM   #16
tjkj2002
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Originally Posted by WKDiesel View Post
That's if the mechanic / technician starts it with hand. Then it's all good. Guess it's all about the user.
Not true at all.There is one sport that they hammer on the lugnuts just using a impact and then the car goes out and runs 200mph(NASCAR).They don't have cross threading issues.

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Unread 12-25-2013, 06:18 PM   #17
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Quote:
Originally Posted by tjkj2002
Not true at all.There is one sport that they hammer on the lugnuts just using a impact and then the car goes out and runs 200mph(NASCAR).They don't have cross threading issues.
I have a slight feeling that those guys are just a bit better than your average mechanic.
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Unread 12-25-2013, 06:35 PM   #18
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Originally Posted by BAH101 View Post
I have a slight feeling that those guys are just a bit better than your average mechanic.
Most of those guys only do that on a race weekend only.
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Unread 12-26-2013, 12:28 AM   #19
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Originally Posted by tjkj2002 View Post

Not true at all.There is one sport that they hammer on the lugnuts just using a impact and then the car goes out and runs 200mph(NASCAR).They don't have cross threading issues.
I bet they have different lugs and studs to avoid cross threading
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Unread 12-26-2013, 01:17 AM   #20
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Originally Posted by tjkj2002 View Post

Most of those guys only do that on a race weekend only.
Also do you know the pit crew actually have to train right? A lot of training even when there are no races. There is a documentary about it. They train to try to push out faster times
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Unread 12-26-2013, 01:22 AM   #21
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Originally Posted by tjkj2002 View Post

Not true at all.There is one sport that they hammer on the lugnuts just using a impact and then the car goes out and runs 200mph(NASCAR).They don't have cross threading issues.
http://auto.howstuffworks.com/auto-r...cs/nascar5.htm
last paragraph they do alter it to prevent cross threading
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Unread 12-26-2013, 05:57 AM   #22
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Originally Posted by xrunndonex View Post
http://auto.howstuffworks.com/auto-r...cs/nascar5.htm
last paragraph they do alter it to prevent cross threading
Thats pretty cool!
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Unread 12-26-2013, 09:57 AM   #23
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While the impact will not cross thread nuts that are properly started by hand an air impact can apply enough torque to strip threads. I use a DeWalt rechargeable electric impact for tire rotations and I always start the nut by hand, use the impact to snug it down and then do the final tightening by hand with a torque wrench. The stupid 2 piece lug nuts that Chrysler uses get ruined by those high torque impacts because the tin cover gets distorted and eventually the proper socket (3/4" or 19mm) won't fit.
I've had a locking lug nut ruined from them over-tightening it years ago and had to hammer a 3/4" socket on it (this was on my '89 Toyota) to get the damn thing off.
I bet some of the tire shops are using torque as high as 180-200 ft lbs judging by how tight they get them and how hard they are to get off. They say the torque sticks prevent over tightening but then why would you have to use a 3' long pipe cheater on a 18" 1/2" drive ratchet to get it loose?
I have 2 sets of tires for each vehicle (one for 3 seasons 1 for winter on steel rims) so I don't have to put up with this horrible service. When I need new tires I load up the old tires on rims and have them mount the tires and balance but I take them home and hand tighten. A real shame that the most basic job can't be done right.
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Unread 12-26-2013, 06:15 PM   #24
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Originally Posted by xrunndonex View Post
http://auto.howstuffworks.com/auto-r...cs/nascar5.htm
last paragraph they do alter it to prevent cross threading
Many vehicles have the same design and have for years.My Jeep's original studs where the same way,no threads for about 3/8" then the treads started.
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Unread 12-27-2013, 03:45 AM   #25
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Originally Posted by xrunndonex View Post
http://auto.howstuffworks.com/auto-r...cs/nascar5.htm
last paragraph they do alter it to prevent cross threading
http://www.summitracing.com/parts/ar...7705/overview/ the jeeps stock studs are similar, but the ARP version is a hell of a lot better. I run ARP's on my racecar
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Unread 12-27-2013, 02:45 PM   #26
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Impact gun...Pretty much the same reason grand dad is rockin Velcro sneakers... Its faster and easier
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