[928uk] Fitting new front lower control arms

[jon928se at gmail.com]

I wouldn't use red rubber grease. Yes it won't harm the rubber - good. But all else being equal will remain as a lubricant nearly indefinitely. The bushes aren't supposed to be lubricated as they act as a secondary spring.

Use KY jelly - completely rubber safe and will remain lubricating for long enough to do the install and will then dry out. If it gets wet it will just get washed out.

If you are easily embarrassed don't go into the chemist with your mechanicing friend to buy a large tube to facilitate reinstallation of the TT tube bearings. BTDT.

Jon

-----Original Message-----
From: 928uk <928uk-bounces at lists.928.org.uk> On Behalf Of Paul via 928uk
Sent: 04 June 2024 06:02
To: 928uk at lists.928.org.uk
Subject: Re: [928uk] Fitting new front lower control arms

In 1998 Andy Elvers wrote this:

"The Porsche 928 can suffer a multitude of suspension problems that basically stem from 2 factors. Firstly the car is heavy - most 928s weigh over 3500lbs. Secondly the 928 is now a relatively old car."

https://www.928.org.uk/articles/13-setting-the-ride-height.html

Twenty six years later the 928 is definitely an old car

As it happens, the front was dead on spec at 180mm, but the rear was a bit lower at 170mm ish

So on the basis that the car was totally unloaded with no passengers, fuel, tools, or luggage, I've raised the rear instead

Paul

On Thu, 30 May 2024 at 14:51, <jonathanrackowe at gmail.com> wrote:

> Red rubber grease is your friend!
>
> Best regards,
> Jonathan
>
> 1991 928 GT Amethyst Metallic
>
>
>
> > On 30/05/2024 12:28, Paul wrote:
> >
> > Thanks for your advice
> >
> > I've tried presenting the saddle at an angle to try to minimise the 
> > bush twist when level
> >
> > https://thumbsnap.com/f/NkwvbjkB.jpg
> >
> > I'm not sure they are going to move though, even with the speed 
> > bumps where I live
> >
> > The new rubber is pinched as soon as the saddle touches them
> >
> > Paul
> >
> > On Tue, 28 May 2024 at 12:40, Paul R Smith <smiffypr at gmail.com> wrote:
> >
> >> Don't leave them loose. Do them up, tight but not torqued. Then 
> >> with the weight on the wheels, the force on the clamps should be 
> >> straight
> downwards
> >> (the wheel is being pushed up, the fulcrum is the bottom of the shock).
> >> There would be minimal force sideways as both front wheels are on 
> >> the ground (or ramps). When you undo the clamps, the cap will be 
> >> pulled
> down,
> >> so undo a bit at a time, and I think that as soon as the clamp 
> >> starts to open, you will hear them creak into their new position.
> >>
> >> Smiffy
> >>
> >> On 28/05/2024 12:33, Paul wrote:
> >>
> >> I think I'll give the soap a try
> >>
> >> The issue is that the rubber gets pinched by the time the bolts are 
> >> even loosely fitted
> >>
> >> Also I'm wary of leaving them too loose incase the threads are 
> >> stripped as the forces are significant
> >>
> >> Paul
> >>
> >> On Tue, 28 May 2024 at 12:10, Paul R Smith via 928uk < 
> >> 928uk at lists.928.org.uk> wrote:
> >>
> >>> You could try soap if you don't fancy grease.
> >>>
> >>> I think that if you fit them, then put the weight on the wheels, 
> >>> then loosen those bolts, you will hear them creak as they adjust themselves.
> >>> Be sure to not tighten the bottom shock bolt until then as well.
> >>>
> >>> Smiffy
> >>>
> >>> On 28/05/2024 08:50, Paul via 928uk wrote:
> >>> > Thanks
> >>> >
> >>> > With new arms the rubber is instantly gripped by the saddle 
> >>> > clamp, so
> >>> it
> >>> > didn't seem there was any chance that it would move once there 
> >>> > was
> >>> weight
> >>> > on the wheels even with the bolts as lose as possible
> >>> >
> >>> > Paul
> >>> >
> >>> > On Tue, 28 May 2024 at 08:41, Jim West<quixotixs at hotmail.com>
> wrote:
> >>> >
> >>> >> How I did mine I think came off the list.
> >>> >> Don’t tighten the clamps fully until you get a little weight on 
> >>> >> the
> >>> wheel.
> >>> >> I did it by getting everything else done, then lowered the jack
> until
> >>> the
> >>> >> suspension was compressed (not fully).
> >>> >> Then tightened the clamp.
> >>> >> Jim 928s2
> >>> >>
> >>> >> Sent from my iPhone
> >>> >>
> >>> >>> On 28 May 2024, at 08:34, Paul via 
> >>> >>> 928uk<928uk at lists.928.org.uk>
> >>> wrote:
> >>> >>>
> >>> >>> How should I fit the rear saddle clamp when fitting new arms?
> >>> >>>
> >>> >>> I'm assuming it needs to be tightened with the arm horizontal 
> >>> >>> so
> >>> that the
> >>> >>> rubber bush is not twisted when the car is level
> >>> >>>
> >>> >>> However the spring compressors I have don't allow me to do 
> >>> >>> that,
> I'm
> >>> at a
> >>> >>> loss!
> >>> >>>
> >>> >>> Any suggestions?
> >>> >>>
> >>> >>> Paul
> >>> >>> 87 S4 Manual
> >>>
> >>
> >>
> >
>
>