ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 Technical Postings

Reply
 
Thread Tools Display Modes
Old 04-07-2016   #1
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
Default HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

Last week I was heading to Houma LA from my house in Montgomery TX and it was raining hard. Got to a tight corner on my road by my neighborhood, I was going slooowww... Maybe 10mph, when the back end started to come around, I tried to drive threw it, usually very predicable... Not when wet! Ended up on the shoulder pointing the wrong direction in the lane I was in... The left tire was off the road and the right was still on tarmac.



Nothing seemed wrong at first, I started to notice a squeaking at low speed. When I got it from the heliport yesterday, i noticed that it was clunking when i would load it up, does it in first gear, and second.

Then I noticed it pulling to the left when I accelerate a little, and when I lift off, it pulls to the right.

Okay, now you know what it is... Fix it for me! LOL

I'll have time tomorrow to lift it up and check everything...
__________________
1991 White ZRJuan #1616
Mileage: 56K Sept-14 -- 113k May-18!!!
God Damn I Love This Car!
BigIke is offline   Reply With Quote
Old 04-07-2016   #2
Hog
 
Join Date: Jul 2010
Location: Woodstock, Ontario, Canada
Posts: 1,275
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

Rearend time.
__________________
peace
Paul

ZR-1 Net Registry Member #1494
Hog is offline   Reply With Quote
Old 04-08-2016   #3
RussMcB
 
Join Date: Jan 2015
Location: Marietta, GA USA
Posts: 1,160
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

Once you get it up in the air, grab each rear wheel and see if there is looseness.

Recently I had some unexpected rear end darting and it turned out to be a loose rear tie rod nut, causing erratic toe in/out. The cotter pin was gone. Fortunately, an easy fix.
RussMcB is offline   Reply With Quote
Old 04-08-2016   #4
32valvesftw
 
Join Date: Jun 2015
Location: Texas
Posts: 530
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

I had a weird issue like that when I first got my Z, ended up I had 4 loose lug nuts. Maybe you get lucky and its something simple like that.
32valvesftw is offline   Reply With Quote
Old 04-11-2016   #5
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

Found it! Boy am I lucky!!! The right inner u-joint is trashed! Going to replace inner and outer with spicer X u-joints, and the x series beating straps. I think I'm going to do a right side hub-bearing as well.

Anyone recommend a good hub? One part I don't want to skimp on...

Thanks y'all Jay
__________________
1991 White ZRJuan #1616
Mileage: 56K Sept-14 -- 113k May-18!!!
God Damn I Love This Car!
BigIke is offline   Reply With Quote
Old 04-11-2016   #6
Jagdpanzer
 
Jagdpanzer's Avatar
 
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

Do a search for TIMKEN 513020 or SKF BR930024
__________________
Phil Wasinger
1994 Torch Red ZR-1
WAZOO Member
George Braml Intake
Jagdpanzer is offline   Reply With Quote
Old 04-11-2016   #7
Jagdpanzer
 
Jagdpanzer's Avatar
 
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

You will probably find the other side in similar condition so you might as well do both.
__________________
Phil Wasinger
1994 Torch Red ZR-1
WAZOO Member
George Braml Intake
Jagdpanzer is offline   Reply With Quote
Old 04-12-2016   #8
Fully Vetted
 
Fully Vetted's Avatar
 
Join Date: Sep 2012
Location: Rockwall, Tx
Posts: 1,510
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

Don't do just one side. They both have the equal amount of wear. I just did mine and Timken is def the way to go. But make sure you get the USA made Timken. You can find the Chinese Timkens everywhere for around $140 but the good ones I found at VanSteel.com for about $225 each and there is no comparison. Don't forget to get a new plastic hub washer. GMpartsdirect.com has those for cheap.
__________________
_________________

1994 AB/Grey #141

430 RWHP/392 RWTQ

FBI Lyposuction / Secondaries relieved of duty / SW Long Tube Headers / Corsa Exhaust / FIC SS Injectors / MSD Coils / Lightweight Pulleys / Corey tuned
B & M Shifter / Aluminum Flywheel / Samco Hoses / Shelby Series One's / C4 No Flex Frame Stiffener

BBC - Bling By Carter:
Custom ZR-1 Center Caps / Custom Plenum Plate / Air Box Knobs / TB Cover / Oil Filter Cover
Fully Vetted is offline   Reply With Quote
Old 04-12-2016   #9
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
Default Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel

I'll do that! Thanks for the advice, I'm going to have to do one side for now... But hell, if I do both, might as well do the 4.11 upgrade to... Just sold an e85 race set up... All money gone for silly stuff... �� should have been my header money lol
__________________
1991 White ZRJuan #1616
Mileage: 56K Sept-14 -- 113k May-18!!!
God Damn I Love This Car!
BigIke is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:15 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020