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> 914-4 front control arms VS 911
-JR-
post Jan 19 2012, 03:00 AM
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I haven't had the opportunity to dismantle my front end... yet. I was under the impression that...
  1. The torsion bar spline fits the leading edge of the control arm
  2. The 914 torsion bar spline is smaller diameter than the 911 one

So the 911 arm is not identical to the 914. I see in PET that the part number for the 914-6 control arms match the 911.

I'm posting it because a reliable 914 source locally has told me that they are interchangable (911 / 914-4) but I didn't believe so.

Thanks to anyone who can clear this up.

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ClayPerrine
post Jan 19 2012, 07:35 AM
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The only difference between a 914/4 control arm and a 911 control arm are the splines for the torsion bars. The 914/6 uses the 911 control arm, so it has the 911 torsion bars.

Other than that one item, they are interchangeable. I have 914/4 control arms on my car with 911 struts and a 911 aluminum cross member. No problems getting anything to fit.

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mikea100
post Jan 21 2012, 05:52 AM
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QUOTE(ClayPerrine @ Jan 19 2012, 08:35 AM) *

The only difference between a 914/4 control arm and a 911 control arm are the splines for the torsion bars. The 914/6 uses the 911 control arm, so it has the 911 torsion bars.

Other than that one item, they are interchangeable. I have 914/4 control arms on my car with 911 struts and a 911 aluminum cross member. No problems getting anything to fit.


Clay,
Did you have to modify the access cover to fit aluminum cross member? I've read that 914 cover plate won't fit with 84-89 911 aluminum cross member.
Also, are the late (84-89) 911 control arms made of aluminum as well?
Thanks,
Mike
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