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> Making the a-arms "wider"...besides camber issues,, what other "gotchas" will I hit??
Mueller
post Jul 13 2005, 08:24 PM
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Trying to figure out if I can safely go 1" per side to make the front track the same as the rear....I currently have 1.25" thick spacers, so I could eliminate those which would be nice.

I figure not that big of a deal on the camber since that is easily fixed by opening up the top of the shock tower
(salvage title car, so no worries about "ruining it" (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) )

For those that have installed turbo-tie rods, do you think there is enough adjustment to move the ends out an inch per side???



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TimT
post Jul 13 2005, 08:37 PM
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hehehe,

some of "F troop" try and make the A-arm wider

offset ball joints etc
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bondo
post Jul 13 2005, 08:39 PM
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Here's a gotcha.. different (lower) effective spring rate!
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Mueller
post Jul 13 2005, 08:39 PM
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QUOTE (TimT @ Jul 13 2005, 07:37 PM)
hehehe,

some of "F troop" try and make the A-arm wider

offset ball joints etc

how much extra "width" does those buy me?
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Mueller
post Jul 13 2005, 08:40 PM
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QUOTE (bondo @ Jul 13 2005, 07:39 PM)
Here's a gotcha.. different (lower) effective spring rate!

i thought of that one already, just didn't post it...thanks for the reminder (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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bondo
post Jul 13 2005, 08:44 PM
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What if you widened the crossmember and moved the front A-arm mounts? Oooh, just widen the whole car! Good luck finding a wider windshield though. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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MattR
post Jul 13 2005, 08:47 PM
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wider is better (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

could you construct suspension out of steel tubes and eliminate the torsion bar in favor of a coilover? Then you could set any width and geometry you wanted. Keep the original pickup points on the suspension and attach them to the ball joint lower half and a provision for a sway bar. Maybe use spherical bearings at the pickups also? Just a thought.
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Mueller
post Jul 13 2005, 08:48 PM
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QUOTE (bondo @ Jul 13 2005, 07:44 PM)
What if you widened the crossmember and moved the front A-arm mounts? Oooh, just widen the whole car! Good luck finding a wider windshield though. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

the wider a-arms would be better....in fact shortening the crossmember a few inches would be best so that the a-arms could be even wider, but I don't think there is enough room for the a-arms to travel up unless major cutting and mods are done to the tub.....
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Downunderman
post Jul 13 2005, 09:42 PM
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Mike,

You can certainly 19mm without any problems, maybe a little more.
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Brett W
post Jul 13 2005, 09:48 PM
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When you lengthen the arms you need to make sure that the inner pivot point does not change in relation to the inner pivot point of the tie rod. THis will mess up your caster and bump steer.
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john rogers
post Jul 13 2005, 10:32 PM
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I use 1 inch spacers in the front and 1 1/4 spacers in the rear and so far have had no issues. Of course the car does get a substantial amount of eye balling since it does get driven pretty hard at times!! I'd say keep the spacers.
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Britain Smith
post Jul 13 2005, 10:44 PM
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There is a guy on the Pelican board that had this done on his car. His name is Jack Olsen and the car is BB2. He is a moderator over there and I bet he could give you some insight.

-Britain
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McMark
post Jul 14 2005, 01:08 AM
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QUOTE (Mueller @ Jul 13 2005, 06:24 PM)
(salvage title car, so no worries about "ruining it" (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) )

I want my car back. You're disrespecting it. (IMG:http://www.914world.com/bbs2/html/emoticons/tongue.gif)
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ArtechnikA
post Jul 14 2005, 06:21 AM
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QUOTE (MattR @ Jul 13 2005, 10:47 PM)
could you construct suspension out of steel tubes and eliminate the torsion bar in favor of a coilover?

of course. the factory did with the 935's more than 25 years ago, and new 935-style parts are in current production.

you do need to reinforce the upper structure some, since it was not designed to accept spring loads.
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redshift
post Jul 14 2005, 06:27 AM
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QUOTE (Britain Smith @ Jul 14 2005, 12:44 AM)
There is a guy on the Pelican board that had this done on his car. His name is Jack Olsen and the car is BB2. He is a moderator over there and I bet he could give you some insight.

-Britain

Jack Olsen is the John Peterson of the 911 world.

(IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif)

Damn evil cars!


M
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TimT
post Jul 14 2005, 08:40 AM
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I think the offset balljoints give you about 3/4 in extra width, but they aint cheap

then you could always do this



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Mueller
post Mar 28 2006, 12:32 PM
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(IMG:http://www.914world.com/bbs2/html/emoticons/icon_bump.gif) for JP (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

so sitting in traffic I got to thinking again about this.....

it looks like there is room inside the shock/strut well to cut and move the mounting over 1" or more depending how far you widen the a-arms....


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Mueller
post Mar 28 2006, 12:35 PM
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the second modification to the steering rack will be just as "fun" to perform (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/welder.gif)

you'd need a "sacrificial" rack so that the ends can be cut off, machined and installed to a good rack....this will cure the problem of the turbo tie rods being too short....


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turbo914v8
post Mar 28 2006, 12:39 PM
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How wide do you want to go? = How deep is your pocket?

Adjustable width 935 front end
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groot
post Mar 28 2006, 12:43 PM
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Wider is better, as you know. I've done it (by moving the lower control arm mounts inboard and replacing them with tubes and rod ends). My overall stance is a bit wider in the front, but with the coil-overs I have to run a spacer to keep clearance between my spring and tire.

The down side of my setup (as Brett mentioned) is toe out in bump (not sure about caster???), but the upside is good roll center control (very little migration over the range of travel and roll).

You can lengthen the tie rods to accomodate... why would you mess with the rack?
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