Education needed: differences between 911 2.4 T/E/S and 911 RS rear-axletrailing arms

[Biancaneve]

Hi,can somebody explain to me what are the exact differences between a normal 911 2.4 T/E/S rear-axle trailing arm and the '73 RS one? Pics will help

Moreover, I have noticed that the PET provides two different options for the RS (91133105310 and /20): what are the differences?

Thanks a lot for the answer.

Massimo

[fourteenten]

Hi,

RS arms have a strengthening piece welded on. Top of my hat, 5320 is the shorter trailing arm that came first with RS#1409.

Cees

[Biancaneve]

Thanks a lot! Do you have any picture?

M.

[mobius911]

Here you go. You can see the extra reinforcing collar on the left one around the hub. Right one is a standard S version. Not mine, just a picture I found on some other site.

[RSTarga]

I always thought that the reinforcement was only done on RSRs' Wider wheels and tires.

[Biancaneve]

Thanks Jeff!

[RSTarga]

It seems they started the reinforcing after the first 500

[gled49]

Reinforced trailing arms started from the start of production on the RS. Gled

[moito]

if i remember right also the rs trailing arm was changed at some point of production...hmmm have to have a look into the RS book........once met the guy who did the welding on the right side trailing arms for the rs...it was pice work for a sub contractor....he told me that every trailing arm got a small white QC stamp....just a anecdote

[fourteenten]

Here more info on the shortened trailing arms, from VIN#1409 standard and used for the RSR's.
http://www.ebay.de/itm/Porsche-911-R...2#ht_944wt_998

Cees