Front suspension

[Roslin]

I have just disassembled the complete front suspension of my car, due to very bad handling !

After all the parts was removed from the car, i tried to inspect every single part, and i relay did not find any critical points - i can't see any defects. The front shocks is Bilstein, the type is ... 5001-HO these have maybe a very minor difference in the feel when i compress them (the left one is the soft one), and a small clearances in between the shock part/ tube - no oil leaks - they expand by them self as they should.

I think the best way to start is to fit 2 new Bilstein inserts of the same type ( std.) i assume they are ??

Do i need to do something with the guide in the tube, or is it even possible to change something here ?

As the car is lowered i am thinking about moving the spindle the up-wards on the tube, to get fully suspension travel and better geometry in the suspension.

Have anyone tried to move the spindles up on Bilstein struts?
I can se they are welded by one big spot on the back, but i do not know if this is it .. or the are schrinked on the tubes ?

The four rubber bushings in the lower arms looks OK.

After the car has stand on 4 jigs for one year, because of engine rebuild, it would not get the same low ride hight as before (even after 500 miles of driving) - maybe due to friction in the rubber bushings ... and mabye therefore the very bad handling . By bad handling means that the car pulls from left to right as the suspension is decompressed/compressed. Imagine if you are driving on a road with many small hill's so you relay use your suspension from max. compression to full stretched legs .. over-braking problems at the front at low speed or in rain are also a problem!

Any advice are more than welcome!

See normal low ridehight on attached picture.




Regards Roslin

[Peter Bull]

Testing the shock absorbers by compressing them by hand will only tell you whether there is gas pressure in them or not. The velocities, and forces, they are subjected to is much higher than most normal men can create by hand.

A good mechanic can move the spindles. To get them off requires a some brute force. IRC the bore in the spindle has to be opened slightly before you can move it longer up on the strut.

The poor straight line stability could be just a little too much toe-out in front. Get the suspension aligned.

BTW, where in Denmark are you located?

/Peter

[Roslin]

Hi Peter,

Thank you for your replay.

I am located in te central part of Jylland - Ikast.

What do you mean by opening the bore slightly, ? By turning or another machine operation ? - i assume they must be schrinked on the tube, as i can't imagne this spotweld itself could withstand te load..

Med Vänlig Hälsning

Roslin

[Peter Bull]

I am a little bit out of my league here, but AFAIK the strut tube is slightly conical. Therefore, if you want to move the spindle up you have to make the bore a little bit bigger. A mill would be the safest way I think.

I believe you are right about the spot weld, it is a safety precaution.

Ikast? I was in Herning on stumpemarked a couple of weeks ago.

/Peter

[Roslin]

OK the Conic design make sense to me. then i must find the right drill sice to get the spot weld removed. I Have the machining facility's so to make it bigger should not be a problem. I would upload some photos when i go so far.

The Stumpemarked in Herning is mostly for old MC/parts.. i have been there a couple of times. i think many from Sweden and Germany as well, are visiting it . Next time must be in November or so.


Roslin

My latest engine rebuild :-)

[Roslin]

Hvad .. er du fra Ålborg ? :-)

[Peter Bull]

Nei jeg er egentlig fra Norge, men for tiden bor jeg i Ålborg. Bilen står i Stockholm...

Fin motor forresten!

/Peter

[Roslin]

Hej Peter,

Ok, nå det er sådan det hænger sammen. Den er jo også vanvittig dyr at få på danske plader!

Jo tak, motoren køre godt, har kørt ca. 800 km siden jeg lagde den i igen. Den hverken drypper eller sveder, så jeg tror jeg ar været heldig med at lave det :-)

De fremtidige planer med den, er at finde en 964 plastic indsugningsmanifold kombineret med Megasquirt II. Min bror er i øjeblikket ved at lave en VW T1 med MS II, så det går jeg og kigger lidt på :-)

Jeg Har fundet nogle RS CUP med der til hørende skiver og calipere til det forreste system. - mangler så at finde nogle 965 bag calipere som jeg vil bygge på 930 bagskiver .

lidt flere billeder..




Roslin

[Peter Bull]

Hei Roslin,

det er ikke bare registreringsavgiften som er et problem. Jeg har fått vite at den sannsynligvis ikke går gjennom syn. Den har et lett modifisert hjuloppheng. Leda coilovers blant annet. Hvordan får du din bil gjennom syn med de nye bremsene?

964 insug og MS II kan bli spennende. Har du gjort noe mer med motoren?

/Peter

[spencejm]

I won't try to write in Danish but I was in Denmark way back in 1985. I was deployed over there to Karup Airbase. We were out of Moody AFB in Georgia and had F-4E Phantoms. We were near a couple of towns. Viborg and Hernig I think but it has been 22 years!

Joe

[Peter Bull]

Joe, are you sure you don't want to brush up on your Danish? To be honest I don't write in Danish either, Roslin does.

The Karup Airbase is between Viborg and Herning, so your memory serves you right. How long were you there for?

/Peter

[spencejm]

Peter,

I was there in 1985 for about 3 or 4 weeks. I believe we were there for just about the whole month of June. The Danish AF were flying these funky looking planes they called the Drakken. I'm thinking that means Dragon but since my Danish is limited to "Tak" I really don't know for sure.

It was a beautiful area with beautiful women who didn't seem to know what a bra was! The discos were a lot of fun and the people were great. I guess they didn't get a lot of Americans there because everyone wanted to practice their English and I don't think I ever had to buy my own drinks.

I'd like to go back someday but I no longer get on those flying aluminum death tubes. Maybe after I retire I can take big boat!

Joe

[Peter Bull]

Joe,

the Danish AF had Saab 35 Draken they're phased out now. One of them was sold to an American aircraft collector. It was a Swedish plane designed by a guy called Erik Bratt, IRC. I met him while I was doing my masters in Stockholm. Anyway, the name is Swedish for dragon, but it could also mean mother in law.

I wasn't here in '85, but I believe it looks more or less the same. The beautiful women are using bras, though.

/Peter

[Roslin]

Hej Peter

Jeg ved at det er svært at få godkendt konstruktive ændringer i DK hvis man ikke kan dokumentere at det er i overensstemmelse med det fabrikanten (Porsche) kan godkende. Det er normalt muligt at få ændringer godkendt vis det er feks. et komplet bremsesystem fra en bil af samme type.

Jeg ved ikke om Coil over til en 911 med torsion er noget Porsche officielt kan stå inde for ..?

MS indsprøjtningen bliver et senere project, når jeg en dag finder en komplet 964 manifold.

Men nej der er ikke lavet noget ved motoren, så muligvis er 964 indsugningen lidt for stor. man burde nok hæve CR, andre Knastaksler .. måske også 964.. og dobbelt tænding.

----

Joe, The Draken eskadrill as you both mentioned, was a common sight on the sky when i where growing up - i miss the beautifull
sound of theese machines !! :-) there was wery much training just above where i lived. Today there are Helicopters as far as i know.

I think the girl's in the states are pretty nice as well :-) i talked to a very very nice on last year, when is was in Ann Arbor MI. ... dreaming all the way back in the plane ;-)

Have a nice day both!

[Peter Bull]

Hei Roslin,

det finnes er firma i England som heter Porsch Apart som kanskje har 964 innsug. Et annet alternativ er Van Zweeden i Holland. Det er også mulig at Mittelmotor i Tyskland kan ha sånne innsug.

Det satt coilovere på både 934 og 935, og på 2.8 RSR hvis jeg ikke husker feil, så det finnes 911'er fra den tiden som kom med coilovere fra fabrikken. Da er det kanskje ikke helt umulig å få den gjennom syn allikevel.

/Peter