 Stock tie rods?, What's the deal? |
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| jk76.914 |
 Jul 26 2011, 04:23 AM
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Senior Member  Group: Members Posts: 809 Joined: 12-April 05 From: Massachusetts Member No.: 3,925 Region Association: North East States  |
Just wondering what's the story with the stock tie rod design, the one with the rubber donut for an inner tie rod end. Porsche kept it in production for about 25 years (through '89), and then the 964 used the same approach, except reversed it with the yoke on the rack and the rubber donut on the tie rod. I've read a lot of testimonials for the turbo tie rod, but if it was that much better, why didn't Porsche convert over across the board? It couldn't have been cost- every econo-box I've ever looked at has ball type joints at both ends. Maybe it was to add a bit of dampening? They used to sell steering dampeners for cars with light front ends (Corvair, VW, 356). Maybe a bit of shock absorption to protect the rack from hard hits, like pot holes? And while we're on the subject, I saw in PET that the 930 that first had the turbo tie rods had a different rack. Anyone know the difference? Jim |
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| SLITS |
Jul 26 2011, 07:08 AM
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
The rubber doughnut was merely a device to dampen road shock being transmitted back to the steering wheel ... shock absorber of sorts. A cheap solution that worked until the rubber gave up and caused play in the steering. Angular movement is restricted to up and down.
The second shock absorber is the coupler on the steering shaft. Turbo tie rods are a ball and socket coupler. Installing them gives you more "road feel" (supposedly). Angular movement is not limited. Hey that's my nickel analysis. A rack and pinion is a rack and pinion ... only difference is the number of turns lock to lock and whether it is power or not (kinda). |
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| Drums66 |
Jul 26 2011, 12:55 PM
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914 Rudiments Group: Members Posts: 5,321 Joined: 15-January 03 From: Coronado,Cali Member No.: 151 Region Association: Southwest Region |
....What's wrong with them??(stock tie rods)
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| SirAndy |
Jul 26 2011, 01:45 PM
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Resident German Group: Admin Posts: 41,640 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Drums66 @ Jul 26 2011, 11:55 AM)  ....What's wrong with them??(stock tie rods) Nothing ... (IMG:style_emoticons/default/smile.gif) |
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| JFJ914 |
Jul 26 2011, 02:43 PM
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#5
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Senior Member Group: Benefactors Posts: 813 Joined: 13-June 03 From: Alpharetta, GA Member No.: 814 Region Association: South East States
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QUOTE(Drums66 @ Jul 26 2011, 02:55 PM) ....What's wrong with them??(stock tie rods) They require a factory jig to set the correct angle and depth on the inner tie rod end. Other than that, nothing is wrong with them. |
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