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Old 10-07-2016, 04:23 PM   #51
John V, outside agitator
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Originally Posted by Vincent Gagnon View Post
Wrong bushing guys.
Picky picky picky..You think your so smrat, eh?

Since when has that stopped anybody from pontificating?

You pay attention to all that snow ahead.
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Old 10-12-2016, 05:10 PM   #52
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Thanks for looking into more then rear axle placement.
Here's an update:

Installed adjustable panhard today, no changes. As mentioned before - new shock absorbers, springs have a preload so that won't be a game changer anymore. Ofcourse it's good news now that my axle at least is in the middle of the car, less stress for driveshaft for sure.

Took it for a spin - think it depends on tarmac, but more or less I have the same vibrations then before. More vibrations when slipping wheels on straight line, less when going sideways. Most turns felt okay, but some (which were bassicly the same speed and angle) had a TERRIBLE wheel hop. Let it go when a hop like that appeared.

But when turning slowly with welded diff you can feel that the rear axle is hopping already, kind of hard to describe this in english, maybe I will take a video of it.
Anyways, from now on I'm even more confident that those are worn bushings, have to install poly ones for sure. (Thanks to everyone who yelled that it must be rear axle angle. I still can't see how it would affect so bad wheel hop)

I will keep this updated, but since I want IRS for back I might not do a thing to this one aswell. Will see.
By the way - is the 960 IRS axle plug and play fit or cutting and welding is done?
Thanks in advance.
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Old 10-12-2016, 06:07 PM   #53
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...man, i thought you were talking about a 240 as well....
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Old 10-13-2016, 12:13 AM   #54
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Originally Posted by Fretka View Post
I will keep this updated, but since I want IRS for back I might not do a thing to this one aswell. Will see.
By the way - is the 960 IRS axle plug and play fit or cutting and welding is done?
Thanks in advance.
Take a look at this.
http://forums.turbobricks.com/showthread.php?t=316000
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Old 10-13-2016, 10:54 AM   #55
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Thank you.

And yes, more power is coming, since it has EDEM cam, 16t, LS2 injectors, only MS2 is waiting in corner to be installed ha.
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Old 10-13-2016, 06:54 PM   #56
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Originally Posted by odinthewanderer View Post
When i first got into these cars, i put full poly in the back, which is a mistake unless you just want to drift and do burn outs, made my car worthless in snow and rain.
I've been thinking about this, but can't figure it out.

Off-road we like tall sidewalls and loose suspensions for articulation and therefore traction (keeping the tires on the ground). But on the street, the priority shifts to a more controlled ride.

Is the poly-bushed rear end one step too far, from a compliance stand point, that wet traction is compromised?
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Old 10-13-2016, 07:02 PM   #57
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Just found this on Ben's site:

In order to get proper articulation and to not over constrain the rear axle Volvo put voids into the rubber bushings, while this works to allow the axle to rotate back and forth with travel it makes the bushing weak and prone to ripping and destruction. Our competitors offer a polyurethane bushing to replace this Volvo bushing. While this bushing is much more durable it is also very poorly designed product that is not well suited to is installed application. The polyurethane bushings will deal with vertical travel reasonably well but they do not respond to body roll or one wheel bumps correctly. They do not pivot in the body roll direction! What this does is it causes the rear suspension to bind. When the rear suspension binds it lifts the rear wheel off the ground and reduces grip levels, reducing traction accelerating out of corners, and causing a shift in handling balance to over steer.

Very interesting.
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Old 10-14-2016, 12:18 AM   #58
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Quote:
Originally Posted by LC4CARL View Post
Just found this on Ben's site:

In order to get proper articulation and to not over constrain the rear axle Volvo put voids into the rubber bushings, while this works to allow the axle to rotate back and forth with travel it makes the bushing weak and prone to ripping and destruction. Our competitors offer a polyurethane bushing to replace this Volvo bushing. While this bushing is much more durable it is also very poorly designed product that is not well suited to is installed application. The polyurethane bushings will deal with vertical travel reasonably well but they do not respond to body roll or one wheel bumps correctly. They do not pivot in the body roll direction! What this does is it causes the rear suspension to bind. When the rear suspension binds it lifts the rear wheel off the ground and reduces grip levels, reducing traction accelerating out of corners, and causing a shift in handling balance to over steer.

Very interesting.
Old news.
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Old 10-14-2016, 11:40 AM   #59
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Old news.
Still not funny
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Old 10-15-2016, 01:38 AM   #60
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Old news.
It's always great to be among friends sharing a common interest.
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Old 05-21-2017, 05:01 PM   #61
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In case someone's wondering, bushings was the problem.
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Old 05-23-2017, 04:03 AM   #62
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Originally Posted by mopar318 View Post
Maybe you tire **** is rubbing because you have a stock panhard bar and are lowered 8". It sounds like your geometry is all out of whack and your u joints are hammering themselves apart.

Lsd doesn't lock the wheels. That's why it is called a limited slip.

Several threads about (homemade) adjustable panhard bars
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Old 05-27-2017, 11:44 AM   #63
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https://losangeles.craigslist.org/sf...142570091.html

Yes I know it's not close, but some good photos in the ad
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Old 05-29-2017, 09:26 AM   #64
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Originally Posted by Fretka View Post
In case someone's wondering, bushings was the problem.
Great that you found resolution, and that you posted back to not leave the thread hanging as often happens. Which bushings specifically fixed the issue? Any pics of the hammered ones?
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Old 06-10-2017, 09:51 PM   #65
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Great that you found resolution, and that you posted back to not leave the thread hanging as often happens. Which bushings specifically fixed the issue? Any pics of the hammered ones?
To be honest, old bushings did not look that bad. The ones on the main axle were pretty bad, others seemed fine to me! Replaced all of them together, so can't really tell which ones exactly caused it to hop so badly.
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Old 06-12-2017, 01:25 PM   #66
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Likely a tolerance stack-up issue. A tired bushing with some play here...a tired bushing with some play there...

If you end up changing out 3 or 4 pairs of bushings, all of that play in the respective bushings will add up...

All new bushings feel so nice....it probably almost drives as good as new...almost.
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