BigBadBlack93Z

I'm trying to figure out whats going on w/ my rear. Its about 1 or 2" to the passenger side.
I'm on stock springs and stock LCA's/Panhard. Nothing appears to be bent.
Measuring across from the frame is square. Would sagging springs cause this coupled w/ worn out PHB bushings?
Would an adjustable PHB fix this?

Thanks.

shoebox

I'll put it this way-an adjustable pahnhard rod will let you adjust the centering of the rear end relative to the car body.

BigBadBlack93Z

At what point does it become over adjusted and throw off other geometries. Cosmetically its nice for everything to look square but I don't want to start binding components just to have it look lined up.

Moshbmx1

Off centered rear end can cause it to go one way or another when doing burnouts or launching and losing traction...etc

BigBadBlack93Z

I've seen where they will wear the inside edge of 1 tire or seem to move sideways down the freeway too. I just wanted to know if that would be a possible cure before I dropped the $ on the PHB to find out it was another problem.
Appreciate the info.

hotpart

If your car is that far off center something else is wrong besides just needing an adjustable panhard rod. I would check the frame, phr support, phr again, and anything else in the area the panhard rod attaches.

Injuneer

Agreed... a car that has the rear end offset to one side by 2" has a serious problem, well beyond the "lets try an adjustable panhard rod" solution. Yes, check the PHR bushings... they would be completely gone to allow that much movement, and should be easy to check.

BigBadBlack93Z

bent panhard bar...lovely...hopefully nothing else is screwed up.

Norm Peterson

Inspect the axle and chassis brackets carefully for cracking/bending/twisting/etc. Do the same for the PHB brace and its attachment points.

Replace the PHB. Don't even think of trying to repair it.

Unless somebody tried to jack the car up by the PHB (don't laugh - I saw a newbie tech in a Chevy dealership shop start to do exactly that before I stopped him) or they attached a tow cable or flatbed tie-down to it, the PHB saw a lot of lateral load at least once, and everything in the PHB load path would have seen the same large load.


Norm

BigBadBlack93Z

i think it was jacked up by the bar.
I'm going to order an adj. bar but I need a starting point to set it up. Can someone tell me the distance between the stock eyes in the bushings? From here I can set it up so that it sits parallel to the ground and centers up the rear, once I lower the car I'll get relocation brackets but this will have to do for now.

Norm Peterson

You ought to be able to get close by either laying a string along the mid-height of the bar around the bend from the center of one eye to the center of the other and measuring that length. Even straightening the bar with a sledge and matching the distance between the eyes should be ballpark good enough to get you started (don't be surprised if the old bar develops cracks as you straighten it).


Norm

Injuneer

"search" is your friend.

https://www.camaroz28.com/forums/sho...+rod+dimension

BigBadBlack93Z

thanks.

i got carried away want to confirm that somehow some way it could be bent w/ what looks like a bad idea and a floor jack.

BigBadBlack93Z

figured i'd share:

b.lee

omG!

thats out of control.

Would a bent panhard bar cause the rear passenger side tire to move back into the rear bumper / rear ground effect while turning left?

On my car, stock suspension, and GM C5 vette wheels (17/18 - 245/275) when i make a left hand turn i can hear rubbing from the rear passenger side... And i looked at the rear tire area and its ripping the ground effect off of my rear bumper... any ideas? im looking at the panhard bar tonight.