Question: Tie-rod assembly left to right length difference
Thread Starter
Racer
Joined: Jul 2001
Posts: 286
Likes: 14
From: Snoqualmie, WA
Question: Tie-rod assembly left to right length difference
I am in the process of replacing left and rigth tie-rod assemblies. After removing them I proceded to measure them inorder to adjust the new ones to the proper length and hence aviod having to redo alingment. There is close to a 4mm difference in length from one side to the other.
Is it normal to have this much difference between the tie-rod lengths? I feel inclined to just split the length in half and make both tie-rods the same length. The steering wheel will not be centered but that's an easy fix.
Is it normal to have this much difference between the tie-rod lengths? I feel inclined to just split the length in half and make both tie-rods the same length. The steering wheel will not be centered but that's an easy fix.
Rennlist Member
Joined: Jun 2001
Posts: 611
Likes: 1
From: NJ
Francisco,
Do you have a 996 ( 3 spoke ) steering wheel installed on your 993? If so, that is your answer. The 996 steering wheel does not have the same mounting reference as with the 993 steering wheel.
George
Do you have a 996 ( 3 spoke ) steering wheel installed on your 993? If so, that is your answer. The 996 steering wheel does not have the same mounting reference as with the 993 steering wheel.
George
Rennlist Member
Joined: Jun 2001
Posts: 611
Likes: 1
From: NJ
Originally Posted by Francisco Martinez
I have a Momo Course Wheel which went into the same exact position as the original steering wheel.
George
Rennlist Member
Joined: Oct 2003
Posts: 7,210
Likes: 17
From: Nova Scotia
I am just going through this issue, having replaced the steering rack: what I may suggest is that the total length of the rack plus two complete tie rod assemblies will be a constant for the correct toe-in once camber and castor are set.
Once that total length is known, the two rods are tweaked to cause the dimple on the rack rod to be centered in the bottom inspection window ( black plastic plug under the pinion spline) ie., shorten one rod as the other is lengthened.
With the dimple centered, the steering wheel should be dead flat horizontal .... if not, the wheel must be adjusted.
As you are only touching the tie rods, an accurate measure of toe-in can be made using two 2' levels with stand offs to avoid tire contact as they are pressed horizontal to the rim ... and a good steel tape to measure ahead and behind the wheel - difference being toe-in ( or toe-out if one screws up
)
Otherwise, have it done on an alignment rack .... for counting turns on the rod ends is an approximation to the measure desired, and generally not sufficiently accurate.
Once that total length is known, the two rods are tweaked to cause the dimple on the rack rod to be centered in the bottom inspection window ( black plastic plug under the pinion spline) ie., shorten one rod as the other is lengthened.
With the dimple centered, the steering wheel should be dead flat horizontal .... if not, the wheel must be adjusted.
As you are only touching the tie rods, an accurate measure of toe-in can be made using two 2' levels with stand offs to avoid tire contact as they are pressed horizontal to the rim ... and a good steel tape to measure ahead and behind the wheel - difference being toe-in ( or toe-out if one screws up
)Otherwise, have it done on an alignment rack .... for counting turns on the rod ends is an approximation to the measure desired, and generally not sufficiently accurate.
Trending Topics
Rennlist Stories
The Best Porsche Posts for Porsche Enthusiasts
10 Porsche Colors That Have More Personality Than Most People
Verdad Gallardo
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod
Verdad Gallardo
10 Reasons I Hate Going to the Porsche Dealership (& the 1 Reason I Stay)
Joe Kucinski
Porsche Shakes Up The Nürburgring Lap Record Table Once Again
Verdad Gallardo
6 Ways the Porsche 911 GT3 S/C Redefines Performance
Joe Kucinski
10 Wildest Homologation Specials Porsche Ever Sold
Verdad Gallardo
Super Rare RUF BTR III Comes Out of Hibernation, Looking For a New Home
Verdad Gallardo
10 Porsche Opinions That Can Start a Fight
Joe Kucinski
One-Off Porsche 911 S/T Takes Inspiration From Famous '70s Race Car
Verdad Gallardo
Thread Starter
Racer
Joined: Jul 2001
Posts: 286
Likes: 14
From: Snoqualmie, WA
Hey Jack,
My intention is to make both tie-rods the same length by following the procedure described by Garth (taking from one side and adding to the other) which would lead to the same side to side length.
My intention is to make both tie-rods the same length by following the procedure described by Garth (taking from one side and adding to the other) which would lead to the same side to side length.
