HELP - Rear/Middle area CLUNK, pull left during accel, right during decel - ZR-1 Net Registry Forums

BigIke · 04-07-2016

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...

Hog · 04-07-2016

Rearend time.

RussMcB · 04-07-2016

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.

32valvesftw · 04-08-2016

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.

BigIke · 04-11-2016

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

Jagdpanzer · 04-11-2016

Do a search for TIMKEN 513020 or SKF BR930024

Jagdpanzer · 04-11-2016

You will probably find the other side in similar condition so you might as well do both.

Fully Vetted · 04-11-2016

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.

BigIke · 04-12-2016

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

04-07-2016	#1
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	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!

04-07-2016	#2
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,275	Re: HELP - Rear/Middle area CLUNK, pull left during accel, right during decel Rearend time. __________________ peace Paul ZR-1 Net Registry Member #1494

04-07-2016	#3
RussMcB Join Date: Jan 2015 Location: Marietta, GA USA Posts: 1,160	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.

04-08-2016	#4
32valvesftw Join Date: Jun 2015 Location: Texas Posts: 530	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.

04-11-2016	#5
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	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!

04-11-2016	#6
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,657	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

04-11-2016	#8
Fully Vetted Join Date: Sep 2012 Location: Rockwall, Tx Posts: 1,510	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

04-12-2016	#9
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	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!