 boxing rear trailing arms, is it a necessary mod for stiffness |
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| pete-stevers |
 Jan 15 2005, 01:01 PM
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#1
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saved from fire!  Group: Members Posts: 2,643 Joined: 10-October 04 From: Abbotsford,BC, Canada Member No.: 2,914 Region Association: Pacific Northwest 
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i would like to know if box welding the trailing arms is very important for stiffness??? (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif) Do I need to weld it up for a reg road car? or should i just leave them? What is the difference?
would replacing the rubber bushings be a more cost evective performance mod?? (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif) |
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Replies(1 - 5)
| d914 |
Jan 15 2005, 01:45 PM
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#2
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Advanced Member Group: Members Posts: 2,331 Joined: 12-July 03 From: Atlanta, ga Member No.: 904 Region Association: South East States |
for a road car no problem, don't need to, in fact if done wrong can warp the the arm. Some debate on wheather or not race cars need it. Better to reinforce the suspension ear than the arm.........possible chop stick info here, add all legal quaifiers on opinions.... (IMG:http://www.914world.com/bbs2/html/emoticons/beer.gif)
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| Dave_Darling |
Jan 15 2005, 02:27 PM
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#3
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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IMHO, boxing the trailing arms is not worth it on a street car. (Unless your "street car" is something really exceptional, then maybe...) Not worth it on most race cars either.
Replacing the rubber bushings with new ones == replacing the trailing arm with a new one. They're not available separately. There are aftermarket plastic ones available, but they're a pain to install properly, and they tend to squeak in a maddening fashion. --DD |
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| pete-stevers |
Jan 15 2005, 02:28 PM
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#4
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saved from fire! Group: Members Posts: 2,643 Joined: 10-October 04 From: Abbotsford,BC, Canada Member No.: 2,914 Region Association: Pacific Northwest
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don't mind chopsticks, (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) just don't want to make stir-fry out of perfectly good trailing arms, plus the liability factor of welding them up for the street...
thanks steve (IMG:http://www.914world.com/bbs2/html/emoticons/mueba.gif) |
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| SirAndy |
Jan 15 2005, 03:15 PM
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#5
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Resident German Group: Admin Posts: 41,688 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) ... biggest problem with boxing the arms, if you hit something hard enough to bend the (unboxed) arm, just imagine what that impact will do to your chassis if the arm is boxed. the impact force has to go somewhere, and i rather replace a bent trailing arm then start cutting into my tub trying to get it back straight ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| pete-stevers |
Jan 15 2005, 04:29 PM
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#6
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saved from fire! Group: Members Posts: 2,643 Joined: 10-October 04 From: Abbotsford,BC, Canada Member No.: 2,914 Region Association: Pacific Northwest
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Good call! i never thought about bending the chassis!! I am running boxed on my car. (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) think the guy who did the work shafted me (IMG:http://www.914world.com/bbs2/html/emoticons/mad.gif) took me three months of chasing around to get them done, (IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif) he was to busy building horse-carriages
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