Subject	Driveshaft Issues after Z1 1-piece install on a 93 Z 2+2
Posted by	dwayne on April 22, 2010 at 11:26 PM
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Message	Hi: Well, I ordered the Z1 1-piece driveshaft. My mechanic put it in and it shook the whole car above 40 mph +. I took it in to get it balanced, and sure enough it needed 4 washers to get balanced. Now I am getting heavy sound / vibration at 70 to 80 mph. Not as bad as before, but definitely noticeable. Transmission mount is fine. Car Specs: 1993 NA 2+2 Manual, 172,000 KYB Adjustables / Eibachs Sub-frame spacers We removed the sub-frame spacers after the install just to see, and still issues. Any ideas on next steps. 1. The shop said they ran the driveshaft at 3,000 rpm, shall I remove it and get them to balance it again above 3,000+ rpm like to 6,000+ 2. Send the Z1 driveshaft back and get another one 3. Send the Z1 driveshaft back and go to the OEM 2 piece 4. Is something else the cause we need to check (differential, etc). My mechanic says he has a used backend that maybe we could swap out to see if that might work I already paid my mechanic for the install Z1, uninstall Z1, install Z1, so this is starting to get frustrating and I want to use his time and my time wisely while keeping an eye on the costs. He is a Z mechanic and is excellent. Note: Also, I have been in contact with Z1, and they seem willing to work with me on this for reimbursement, etc. I have not contacted them on the finding post balance as we just got the driveshaft back in the car today. Any help and advice is very appreciated. Thanks, Dwayne Austin, TX
Follow Ups	Driveshaft Issues after Z1 1-piece install on a 93 Z 2+2 - dwayne 23:26:01 04/22/10 #3 - ZLover4Life 23:33:00 04/22/10 My assumption is that it was due to u-joint operating angles - Ashman2k2 21:13:27 04/27/10 #3 - Draker (Eugene, OR) 23:41:37 04/22/10 #3 ... Had you "searched" and read up on one-piece - zellamay 00:51:26 04/23/10 I have talked to many Z'ers with the one peice Z1 Platinum - KongZTT GT28RS MD 01:10:36 04/23/10 Why? Is it that feeling of relief when you get it - zellamay 13:51:28 04/23/10 There is a procedure to properly install the driveshaft - KongZTT GT28RS MD 01:13:49 04/23/10 it involves measuring the runout, and I believe it only - LJZTT 05:08:31 04/23/10 There are manufacturing tolerances in every part. - zellamay 13:39:45 04/23/10 hmmm, so you're saying the vibration is the result of the - LJZTT 20:17:03 04/23/10 send it back for another, its obviously flawed (n/m) - Z32TT-R 03:25:19 04/23/10 EXACT same issue here, although mine is with an EPRacing - LJZTT 04:57:57 04/23/10 Re: EXACT same issue here, although mine is with an EPRacing - Tech@EPR 05:51:49 04/23/10 I understand the differences. I must not have received bolts - LJZTT 07:49:49 04/23/10 Re: I understand the differences. I must not have received bolts - Tech@EPR 09:33:35 04/23/10 Re: Driveshaft Issues after Z1 1-piece install on a 93 Z 2+2 - ak420 07:02:10 04/23/10 how would you describe the shudder? - ZiNnYc 07:05:01 04/23/10 I had problems with a 1-Piece, and went back - Trailboss 07:08:19 04/23/10 this install requires only about 3 different - KasbeKZ(VA) 07:21:12 04/23/10 If you have a worn out transmission mount or - RICH1 08:11:59 04/23/10 Re: Driveshaft Issues after Z1 1-piece install on a 93 Z 2+2 - bryan@Z1 11:38:31 04/23/10 Thanks for all the suggestions...Dwayne - dwayne 12:13:16 04/23/10 I've got a 2+2 with the Z1 DS... - xpwarrior 19:14:45 04/26/10
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