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> This could have been ugly ..., Broken steering rack
SirAndy
post Mar 11 2013, 10:43 PM
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McMark found the reason why my car would sometimes suddenly change direction without any steering input.

That is one broken steering rack if i ever saw one.
(IMG:style_emoticons/default/icon8.gif)


https://www.youtube.com/watch?v=ccihNmlBVoc



I'm just glad it didn't completely fall apart while i was driving.
(IMG:style_emoticons/default/huh.gif)
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914itis
post Mar 11 2013, 10:50 PM
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Thanks for sharing.
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Mike Bellis
post Mar 11 2013, 10:59 PM
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Yay McMark! (IMG:style_emoticons/default/smilie_pokal.gif)
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mrbubblehead
post Mar 11 2013, 11:35 PM
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holy crap. was that hidden under the the plastic accordion cover?
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McMark
post Mar 11 2013, 11:47 PM
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Everything is hidden by the plastic bellows, but there would be NO indication of this problem when installed in the car (aside from the drivability issue Andy mentioned). The rack is held firm and the shaft coming up into the cabin is guided by a bearing. Visual inspection wouldn't have show this particular issue either. But what the video doesn't even show is that the rubber bushing/coupler is completely worn out as well and would add EVEN MORE slop to the steering.
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mrbubblehead
post Mar 11 2013, 11:53 PM
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QUOTE(McMark @ Mar 11 2013, 10:47 PM) *

Everything is hidden by the plastic bellows, but there would be NO indication of this problem when installed in the car (aside from the drivability issue Andy mentioned). The rack is held firm and the shaft coming up into the cabin is guided by a bearing. Visual inspection wouldn't have show this particular issue either. But what the video doesn't even show is that the rubber bushing/coupler is completely worn out as well and would add EVEN MORE slop to the steering.

my coupler was completely wore out also. so i cut that bellow off and left it off. so i can at least do a visual on it when ever the tank comes out. who knows what evil lurks under that thing. personally, i think its a time bomb with horrific consequences. but andys problem is actually in the rack itself right? what failed?
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McMark
post Mar 12 2013, 12:00 AM
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QUOTE
but andys problem is actually in the rack itself right? what failed?

Didn't disassemble it. Probably won't, but Andy probably will on Sunday. (IMG:style_emoticons/default/wink.gif)
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mrbubblehead
post Mar 12 2013, 12:02 AM
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euro911
post Mar 12 2013, 03:02 AM
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Good wake up call (IMG:style_emoticons/default/sad.gif)

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billh1963
post Mar 12 2013, 05:03 AM
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I wonder what the actual failure rate for these are? Is this something we should all be checking for?

The suddenly changing direction is obviously a serious problem and a huge sign; however, what tests could be done to see if the components are wearing? Jack up the front of the car and test for steering play?
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Chris H.
post Mar 12 2013, 05:16 AM
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Holy crap! This is the rack that came with the 911 front suspension? Pretty scary.
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JawjaPorsche
post Mar 12 2013, 05:24 AM
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I had an almost ugly experience last year too. My steering play was getting progressively worse then it started making crunching noises. Not good. Then the steering really went bad while I was in town. I managed to drive it home very carefully and pulled the cover and noticed that one of the bolts on the bottom had completely came out! The coupler was worn out too so I replaced that with a delrin one from Tangerine Racing. When I replaced the coupler, I bought longer bolts for the bottom and then put some lock nuts on the top which might be overkill but it made me feel good and safer!


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Luke M
post Mar 12 2013, 07:13 AM
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I replaced my steering coupler with one of the tangerine racing units also.
I did it for an upgrade in steering feel and nothing else.
When I took the plastic cover off the steering rack you could clearly see that it was time for a new one. I didn't take any pics of my coupler but it looked like JawjaPorsche old coupler. The mounting holes where worn out. I'm glad I caught it now vs later. I feel this should be a part that any 914/911 owner should check.
The other thing I liked about the tangerine coupler is that it comes in two sizes.
One for stock replacement and one for lowered cars which is suppose to help with bump steer. I plan on installing one of the tangerine couplers in my brothers car later this spring/summer. I'm sure his steering coupler is probably worn out also. It's been in the car/in service now for 39 years.
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Sneezy
post Mar 12 2013, 07:36 AM
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It doesn't help with bump steer, it's sized to work with rack spacers and they help with bump steer.
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02loftsmoor
post Mar 12 2013, 07:41 AM
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I need to add this of things to check, Wow
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Chris Pincetich
post Mar 12 2013, 09:39 AM
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Andy's car is a monster. Big 3.6-6 engine and known to arrive on big racing slicks and hammer around AX courses and race tracks.

Thankful it did get checked before it wrecked! (IMG:style_emoticons/default/beerchug.gif)
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OU8AVW
post Mar 12 2013, 10:06 AM
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My rack is out, looks like I will be pulling it apart further. I have delrin material that we make sheaves for sailboats out of. Should be able to turn a new bushing pretty quick.
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balljoint
post Mar 12 2013, 10:09 AM
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You break that at speed and it would be like riding a bear. (IMG:style_emoticons/default/ohmy.gif) And how do you steer a bear? (IMG:style_emoticons/default/confused24.gif)
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Eric_Shea
post Mar 12 2013, 10:12 AM
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JB Weld (like a "real" 914 man)
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worn
post Mar 12 2013, 10:32 AM
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QUOTE(balljoint @ Mar 12 2013, 08:09 AM) *

You break that at speed and it would be like riding a bear. (IMG:style_emoticons/default/ohmy.gif) And how do you steer a bear? (IMG:style_emoticons/default/confused24.gif)

I am not sure, but it seems obvious that you pull the right ear to turn right, and the left ear to turn left. That is why I have a left and right brake pedal just in case (IMG:style_emoticons/default/laugh.gif) .


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