IRS alignment setting for wide rear tires
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I finally have the rear end together with brakes, fenders and wheels. I drove the car down the driveway and back to settle the rear suspension so I could get a camber measurement .. it turned out to be -2.93 degrees :eek: The 265/35/18 rear tires are only contacting the ground on the inner 3/4 of the tread (I saw the tread tracks in the snow). When I had the 195/65/15's on, I had fine tire wear but got a big problem now. All of the rear bushings are old and I plan on converting to urethane in the next few weeks. The rear is lowered about 2" and I'd rather not re-index the spring plates. Does anyone have any suggestions as to how to correct this ? :help: Does anyone have any alignment settings for wide rear tires ? Thanks for any suggestions. Sandeep |
Do you have steel, early or late aluminum trailing arms.??
I think the aluminum arms have camber,toe and ride height adjustability. :confused: |
if you dont have Porsche trailing arms and you are using VW arms, you could always swap sides with the arms and reverse them. This will eliminate about 3 decrees of negative camber.
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Thats cool!! Does it affect the ride or performance?? |
Ahhh... it is sooo nice having bolted-on front pivots :D ! Once I had my ride height set, I just loosened them and tapped themaround until the 265's had a nice even contact patch. :cool:
Hey Vujade, my custom arms don't have a left/right. I guess somehow that little degree of twist can be left out? |
Good suggestions ... I have the stock beetle arms.
Panel, where did you get the bolt on pivots ? Does anyone know if something like this exists for racing purposes ? Would be cool to be able to adjust camber at the track. Sandeep |
944 spring plates have camber adjustments
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Mine wern't really intended to be "adjustable". My bus has a conversion kit that takes it from swing to IRS. This particular kit (busboys) has bolt on pivots instead of weld on. I just use the bolt on part to my advantage. If you look at the chassis on a racing 911 (I think there is a pic in the gallery), the front pivot is a hiem instead of rubber bushed and the mount is slotted vertically for adjustment. You could do something real similar on a street setup.
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Ok, I figured out where I saw it... Feb '04 Excellence. Article near the back about tuning coilovers on a 911. Shows pics (page 146) of the slotted mount, NOT a hiem like I thought. Would be very easy to duplicate.
Sandeep, I'll try sending you a scan from the page. It shows specifically what you want to be able to do. (I would post it, but I think that's a big copyright no-no :rolleyes: ) |
As long as your not doing it for profit and you list your source the copyright police shouldn't have a problem with it. :laugh:
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Thanks for the pic Panel. It makes sense now. I was looking on the web and found a similar pic.
http://www.rennwerks.com/GT1R/images...partment_2.JPG This is from the Rennwerks website where they are restoring a GT2. Look at the trailing arm mounts and see how they are adjustable for camber. Sandeep |
The more I think about this, the more it makes sense .. I want to go with a coilover / 935 style springplate rear suspension in the future, and it would be cool to lower the car AND have proper camber for WIDE rear tires.
I saw a pic of a 911 RSR buildup with 17x11 rears and in the article, they lowered the rear of the car and kept the camber in check with the camber boxes. MAKE IT SO ! :D :D Sandeep |
Hey Sandeep,
Let me know if you are going after this. If you get a mchineshop to make the mounts, you can have them make me a set as well :D :D Rob. |
:D Yeeesss! Welcome to the dark side!
Gotta have the steamrollers out back! What could possibly be wrong with a contact patch like this??? :D :D http://pic9.picturetrail.com/VOL267/...5/45092526.jpg |
Will my 944 late aluminum trailing arms have enough camber adjustment for 18" X 10" rears. :confused:
Which bolts adjust camber? The eccentric bolt for the sway bar or the eccentric bolt in the spring plate. |
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