Subject	You are working really hard to install a known bad product.
Posted by	Bernie (NoVA) on July 29, 2024 at 10:26 AM
	This message has been viewed 306 times.
In Reply To	Revised Whiteline polyurethane FUCA bushing design posted by Polishzx on July 18, 2024 at 05:18 PM
Message	Urethane upper arm bushings have been failing for 25+ years. The issue isn't solved by more grease or whatever. The stock bushings have a suspended BEARING in each position. That bearing has freedom of movement 360 degrees, the bearing is bonded to the inside of the bushing that then lets it flex and twist with the motion of the upright. ALL urethane solutions WILL fail that same way. The bushings break down, and blow out, they all make noise and they all rely on grease to make a solid insert rod slide around in a bushing. The upright moves in a parabolic path, none of the urethane bushings can follow it correctly. SRC="http://www.yugobernie.com/images/TTnet_Sigs/yugobernie_ sig _b12m.jpg"> Bernie Bilski berniebilski@cox.net President of Z-Car Club of Northern Virginia 1995 Nissan 300ZX TwinTurbo in Cobalt Green 1997 Nissan 240SX SE in Ultra Red 2006 Nissan Frontier SE in Ultra Black src="http://www.yugobernie.com/images/TTnet_Sigs/zccnv_logo_ new .jpg">
Follow Ups	Revised Whiteline polyurethane FUCA bushing design - Polishzx 17:18:21 07/18/24 Thanks for the update! I just went through this on my Z and - jmw300zx 17:02:47 07/22/24 Nismo bushing FTW (n/m) - itsa300zx 20:24:07 07/22/24 amen! (n/m) - Kvert 07:12:30 07/23/24 It was a good idea to stay away from the old design - Polishzx 10:39:25 07/23/24 I must have missed that, never heard of those issues.. - itsa300zx 15:57:06 07/23/24 That's why I'm doing it but not saying it's the law - Polishzx 17:14:56 07/23/24 That is an interesting way of looking at it... - itsa300zx 17:44:15 07/23/24 The LCA and Kingpin assembly also bolted together... sort of - Polishzx 18:46:09 07/23/24 You are working really hard to install a known bad product. - Bernie (NoVA) 10:26:59 07/29/24 Re: You are working really hard to install a known bad product. - VinZmax 13:34:55 07/29/24 agree. the twisting motion will destroy the urethane. - slayer fan 15:21:45 07/29/24 I think this solution is unique though and not yet tested - Polishzx 16:00:40 07/29/24 I think it's exactly the same as all the rest - Bernie (NoVA) 17:16:25 07/29/24 Fair enough, maybe you can help me learn more then - Polishzx 17:48:44 07/29/24 I don't really care to keep repeating myself. - Bernie (NoVA) 19:07:30 07/29/24 I'd still like to know when my FUCA bushings should fail - Polishzx 02:05:36 08/05/24 Based on previous installs, shortly after the lube dries up. - Bernie (NoVA) 00:59:59 08/06/24 OEM parts are (usually) engineered to have reliability that - black300zx 21:20:07 07/30/24 Cutaway of stock FUCA bushings.... - Bernie (NoVA) 00:40:33 07/31/24 Re: Cutaway of stock FUCA bushings.... - Kvert 17:01:19 07/31/24 Hard to say, when they stock arms wear out they just get - Bernie (NoVA) 21:18:33 07/31/24 I didn't cut open an outer bushing but I guess is same. (n/m) - Bernie (NoVA) 21:20:59 07/31/24
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