Suspension TECH Including Brakes, Wheels and tires

          
Reply
 
Thread Tools Display Modes
  #1  
Old 05-11-2015, 09:29 PM
Ben M.'s Avatar
Ben M. Ben M. is offline
Ultimate Warrior
 
Join Date: Jan 2004
Posts: 2,814
Default Safari Suspension...

So I'm in need of replacing the suspension my '73 Safari because it wobbles all over the road and grunts and groans in turns and stops so the 40 year old bushings likely could use some help. Is PST still the go-to for getting a decent kit for these cars? NAPA, O'reilly, etc all have various levels of "we can't get anything for that" and "it's really expensive for a single piece" no-name parts. I don't know if the "we can't get that" is because the computer says so or if they really don't make upper control arm bushings for a '73 big car anymore.

Polygraphite vs.rubber. Does it really matter on a big car that isn't going racing or twisting through the turns? If it's more durable and reliable, I'll spend the extra on poly provided it doesn't squeak and rattle going over every little bump like the Trans Am guys complain about...

When replacing the rubber and adding new shocks, are the coil springs usually replaced or do they tend to survive fairly well? The car sits perfectly level so it isn't sagging, just doesn't look like the original owner ever did anything to it.

  #2  
Old 05-11-2015, 10:00 PM
goatless's Avatar
goatless goatless is offline
Ultimate Warrior
 
Join Date: Nov 2002
Location: Newtown,CT
Posts: 4,592
Default

On a big ol' wagon I'd just stick with rubber- as long as it's decent quality. If you can't get rubber bushings from a known brand, then I'd go poly... if they exist.

If it's still sitting at the proper ride height, I'd leave the springs. For shocks I'd go as low-tech as possible, avoiding the fancy pants high-pressure gas shocks so many seem to slap on everything. The beauty of having a big ol' wagon is that floating down the road smooth ride.

__________________
1966 GTO
1969 Lemans Convertible- F.A.S.T. legal family cruiser. 12.59 on G70-14 Polyglas tires. 1.78 60'
1969 Bonneville Safari- cross country family cruiser. .
1979 Trans Am 400, 4-speed, 4 wheel disc.

View from the drivers seat racing down Atco Raceway- http://www.youtube.com/watch?v=GhYDMdOEC7A

Ride along in the other lane-http://www.youtube.com/watch?v=mIzgpLtF_uw
  #3  
Old 05-19-2015, 09:02 PM
59safaricat 59safaricat is offline
Senior Chief
 
Join Date: May 2006
Location: Land of the fee, home of the slave
Posts: 277
Default

Goatless is dead on with his info. Use conventional rubber bushings and you'll enjoy a quiet, smooth riding wagon that won't need any additional attention. I checked Rare Parts and they list all suspension bushings on their site as available. Yes, they're on the expensive side but the parts are available and you won't find better quality anywhere else on the planet.

http://shop.rareparts.com/smtp/shopd...&%20COMPONENTS

I personally prefer a smooth ride, so I use standard Monroe-Matic shocks. They're as close as "stock" in operation that you'll find today and are reasonably priced to boot.

As far as springs go, check your ride height on level ground. I doubt it'll be close to spec since coil springs love to sag pretty quickly, but you may get lucky. There are several outfits that custom build coils springs in both stock and modified heights and spring rates.

  #4  
Old 05-20-2015, 03:08 PM
Schurkey Schurkey is offline
Ultimate Warrior
 
Join Date: Aug 2002
Location: The Seasonally Frozen Wastelands
Posts: 6,346
Default

Quote:
Originally Posted by Ben M. View Post
So I'm in need of replacing the suspension my '73 Safari because it wobbles all over the road and grunts and groans in turns and stops so the 40 year old bushings likely could use some help.
Don't forget the body-to-frame bushings. I was astounded at the difference body bushings made on my El Camino--and that was AFTER rebuilding front and rear suspension.

http://www.chevelles.com/techref/body_bushings.html

Quote:
Originally Posted by Ben M. View Post
Polygraphite vs.rubber. Does it really matter on a big car that isn't going racing or twisting through the turns? If it's more durable and reliable, I'll spend the extra on poly provided it doesn't squeak and rattle going over every little bump like the Trans Am guys complain about...
Properly greased, properly installed, the Polyurethane will outlast rubber and give you more-precise handling in the process.

Quote:
Originally Posted by Ben M. View Post
When replacing the rubber and adding new shocks, are the coil springs usually replaced or do they tend to survive fairly well? The car sits perfectly level so it isn't sagging, just doesn't look like the original owner ever did anything to it.
"Sitting perfectly level" probably just means that all the springs have worn evenly.

This is your project, not mine...but if I were selecting parts it would get stiffer, shorter springs all around. Same--or perhaps higher--ride height, but with more-responsive handling and higher load-carrying capacity.

  #5  
Old 05-21-2015, 08:31 PM
Ben M.'s Avatar
Ben M. Ben M. is offline
Ultimate Warrior
 
Join Date: Jan 2004
Posts: 2,814
Default

Quote:
Originally Posted by Schurkey View Post
...but if I were selecting parts it would get stiffer, shorter springs all around. Same--or perhaps higher--ride height, but with more-responsive handling and higher load-carrying capacity.
Biggest problem I'm finding is no one actually makes rear springs for these wagons and front springs are only available from vendors I've never heard of, making me question if they're REALLY correct or not.

I'd love to replace the body bushings, but they aren't easy to come by either (I have to take them all out and measure them then order them...).

  #6  
Old 05-21-2015, 09:39 PM
Sirrotica's Avatar
Sirrotica Sirrotica is offline
Ultimate Warrior
 
Join Date: Jan 2005
Location: Catawba Ohio
Posts: 7,553
Default

Have you found a source for rear leaf springs? I've owned 2 of these wagons (71 and a 76) and the rear leaf springs get rust between the leaves and de arch them frequently.

You may need to have a spring shop re arch them and rebuild and replace any broken leaves.

When these springs are in good shape these wagons can haul as much as most half ton pickup trucks.

One other thing, there was a factory option for dual exhaust on these wagons. Not many people know about it. My 76 Catalina Safari W/455 and I installed the dual system. Helped with power and a little with fuel mileage too. The exhaust is true duals back to the tailpipe and then both terminate into a common tailpipe with 2 pipes stacked on top of each other, flattened together into a 3 inch round, exiting on the drivers side. The spare tire well on the passenger side makes it impossible to have the right side exit on the right side.

I thoroughly enjoyed owning both wagons, little hard on fuel, but as much cargo capacity of a PU truck with a cap.

Many of these wagons met death in the hands of the demo derby jockeys. They bring a premium dollar even just a roller will sell for $1000. The leaf springs and HD chassis make them ideal demo candidates.

__________________
Brad Yost
1973 T/A (SOLD)
2005 GTO
1984 Grand Prix

100% Pontiacs in my driveway!!! What's in your driveway?

If you don't take some of the RACETRACK home with you, Ya got cheated

  #7  
Old 05-22-2015, 07:42 PM
59safaricat 59safaricat is offline
Senior Chief
 
Join Date: May 2006
Location: Land of the fee, home of the slave
Posts: 277
Default

Quote:
Originally Posted by Ben M. View Post
Biggest problem I'm finding is no one actually makes rear springs for these wagons and front springs are only available from vendors I've never heard of, making me question if they're REALLY correct or not.
I had springs custom made for my '59 wagon. I think it was coilsprings.com that did the job, but I could be wrong since it was about 6-7 years ago. I can dig through my receipts if you're interested.

Quote:
Originally Posted by Ben M. View Post
I'd love to replace the body bushings, but they aren't easy to come by either (I have to take them all out and measure them then order them...).
If I can find body bushings for my '59, your '73 should be cake.

  #8  
Old 10-09-2015, 07:57 PM
Ben M.'s Avatar
Ben M. Ben M. is offline
Ultimate Warrior
 
Join Date: Jan 2004
Posts: 2,814
Default

Ok. Getting ready to order parts. Is Moog still a decent vendor? I can get everything I need from them, but if they've suffered from "hecho en Mexico\China" quality downslide syndrome yet still are overpriced, I'll pass.

  #9  
Old 10-09-2015, 11:52 PM
Schurkey Schurkey is offline
Ultimate Warrior
 
Join Date: Aug 2002
Location: The Seasonally Frozen Wastelands
Posts: 6,346
Default

Quote:
Originally Posted by Ben M. View Post
Ok. Getting ready to order parts. Is Moog still a decent vendor? I can get everything I need from them, but if they've suffered from "hecho en Mexico\China" quality downslide syndrome yet still are overpriced, I'll pass.
It's item-by-item. Some part numbers are fine, others are Communist Crap. Still others are India--Brazil--Mexico--wherever they can source the cheapest item that sort-of meets spec.

Reply


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 09:11 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017