Steering Ratios

[RTincher]

Was there an optional lower ratio or rallye steering rack/box available for early LWB 911's? If so, can anyone give the comparative #'s vs the standard rack, or point me in the right direction?

http://www.early911sregistry.org/for...steering+ratio


This thread indicates a difference btw SWB and LWB standard rack steering ratios. Can anyone comment on putting either a "rallye" or SWB shorter ratio rack in a LWB car? Also, any sources for the lower ratio racks?

Thanks,

Bob

[roblav]

I have a bunch of SWB racks...

[RTincher]

Roblav, let me get more educated and I'll get back to you.

Thanks,

Bob

[PStey]

From the Paul Frere book

The 911 originaly came with a 16.5 to 1 steering rack. This apparantly was an expensive design, and with the introduction of the 914 a new steering rack was introduced. Now cheaper to make and with a 17.78 to 1 ratio.

[Bobs 67S]

Peter the 16.5 had a Steering wheel turns lock to lock of 2.07. What was the lock to lock of the 914 17.78?

[PStey]

According to the FIA homologation, the steering on the RS featured a 2,83 lock to lock ratio. This is probably the same as the 914 rack but i am not sure

[RTincher]

Peter, Bob - thanks for answering my question on SWB vs LWB.

Any idea if there was a different "sports purpose" ratio rack? I don't have a copy of the later '70,'71 "sports purpose" manual, but I do have a copied version of the '68 manual shown here by ErnieW which doesn't give a steering rack/box as an option either in the kits or separately.

http://www.early911sregistry.org/for...on+competition


Eric911S, anything in your later sports purpose manual?

Thanks to all.

[Bobs 67S]

Bob T. the steering rack change from 1968 to 69 seems to coinsided with the ball joint and strut changes for the 69> with improved tie rods.

There isn't any mention in the "1970, 911S 914/6 Sports Purpose", or the "1970 Type 914/6 Spare Parts List". Just the smaller padded steering wheel #914.347.901.00.

Have you found a secret factory winning LeMans setup?

Bob F.

[RTincher]

Bob F.-

Thanks for clarity on 1970. I don't think I've found a secret weapon, but even if I did given my driving skills the world would never know it.

The SWB to LWB rack conversion does sound like an easy way to get a little more responsive steering. I'm waiting on comments from one who has done it to find out what if any snags there are. Will report back.

Bob

[davidppp]

We have a few which we have had made specially: about 2 turns.

They are really intended for rally 911R replicas..

Let me know and I'll see if we can get some more in a reasonable timescale and pricing..

Kind regards
David