Pennock's Fiero Forum
  Technical Discussion & Questions
  Rear negative camber issue on stock 88 couple

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Rear negative camber issue on stock 88 couple by CaravanBill
Started on: 07-17-2013 09:17 PM
Replies: 5 (157 views)
Last post by: CaravanBill on 07-19-2013 09:40 AM
CaravanBill
Member
Posts: 276
From: Portland, OR
Registered: Aug 2009


Feedback score: (1)
Leave feedback

Rate this member

Report this Post07-17-2013 09:17 PM Click Here to See the Profile for CaravanBillSend a Private Message to CaravanBillEdit/Delete MessageReply w/QuoteDirect Link to This Post
So I've been steadily restoring this 88 duke 5-speed for the past 10 months and have successfully rebuilt the top end, completely restored the interior, and tons of other fixes. It's starting to look and run really good. The one big thing that remains appears to be a rear suspension issue. When I bought the car, all four tires were badly worn on the inside, right down to the belts while the outside tread was still good. It is clear this car was driven for a long time with a bad suspension issue. Looking at the car from the rear, both rear tires appear to have a significant negative camber (top tipped inward). I assume the PO wore out the rears and rotated the fronts onto the back until they were shot too. At this point I think the problem is the rear.

I know nothing about suspensions. I have not replaced the shocks, but the car rides really well (at least compared to my old 87). There is no play in the wheels either top-to-top or side-to-side when jacked up. The tires are newand are mounted to the stock 14" snowflake wheels.

Should I just take it in for a 4-wheel alignment, or should I replace the shocks first? Any other possible causes for this issue that I should check out before persuing an alignment? Another thing is that I am considering changing to the staggered 15" wheels off an 88 Formula or GT. I assume that if I go that route that I should do that before dropping big $$$ on an alignment. Thoughts?

Thanks in advance. PFF folks are good people.
IP: Logged
PFF
System Bot
Formula Owner
Member
Posts: 1053
From: Madison, AL
Registered: May 2001


Feedback score: N/A
Leave feedback

Rate this member

Report this Post07-18-2013 01:57 PM Click Here to See the Profile for Formula OwnerSend a Private Message to Formula OwnerEdit/Delete MessageReply w/QuoteDirect Link to This Post
Replacing just about any suspension component* will alter your alignment. If you are planning on any suspension work, I'd do that before an alignment.

* Except:
- front shocks
- sway bars & sway bar components.
IP: Logged
mcguiver3
Member
Posts: 742
From: Beacon Falls, CT, USA
Registered: Jan 2012


Feedback score: N/A
Leave feedback

Rate this member

Report this Post07-18-2013 03:36 PM Click Here to See the Profile for mcguiver3Send a Private Message to mcguiver3Edit/Delete MessageReply w/QuoteDirect Link to This Post
another thing to check is the long bolt that goes through the rear knuckle at the bottom and connects to the lateral links.
It could be worn or the hole elongated.
I think Rodney has a fix for that though.
IP: Logged
dematrix86gt
Member
Posts: 490
From: havana arkansas
Registered: Jul 2013


Feedback score: (2)
Leave feedback

Rate this member

Report this Post07-19-2013 02:01 AM Click Here to See the Profile for dematrix86gtClick Here to Email dematrix86gtSend a Private Message to dematrix86gtEdit/Delete MessageReply w/QuoteDirect Link to This Post
Just got thru pulling cradle on mine and after had alignment issues. but my 4 wheel was only 80 bucks. handles like a dream after alignment
IP: Logged
fieroguru
Member
Posts: 11361
From: Champaign, IL
Registered: Aug 2003


Feedback score:    (45)
Leave feedback





Total ratings: 255
Rate this member

Report this Post07-19-2013 06:38 AM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
Replace all the parts you plan on replacing, then take it in for an alignment. Toe out of adjustment will wear tires faster than the negative camber and I would suspect the front vs. the rear.

Reason being is most places forget to jounce the suspension while aligning to restore it back to the ride height (this is specifically called for on the 88's). So after they lift the front suspension once to make an adjustment, it sits a couple inches higher for the balance of the alignment. They set the toe to this higher ride height and as soon as you drive it off the lot you have a toe out condition that wears the inside of the tires. This toe out condition also makes the front of the car jump side to side in the rain.

The lack of jouncing is less of an issue in the rear of the 88's as the toe adjustment doesn't change as much and there is more weight to help it settle to ride height. But the rear could have worn/shifted bushings and the long lateral link bolt could be loose. The long bolt being loose normally causes the car to pull to one side while under throttle, then to the other side when you brake.
IP: Logged
CaravanBill
Member
Posts: 276
From: Portland, OR
Registered: Aug 2009


Feedback score: (1)
Leave feedback

Rate this member

Report this Post07-19-2013 09:40 AM Click Here to See the Profile for CaravanBillSend a Private Message to CaravanBillEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks to everyone who has responded. I have several good leads now and have learned a lot from the posts above.
Looks like I should give my whole suspension system a thorough inspection.
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock