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5 bolt conversion on 4kq is complete
Finally I got enough time put aside so I could complete installation of
the front 5kt struts on my 4kq.
The procedure itself went very smooth. Only concern I had was with the
driveshafts. I used a set of rear 4kq shafts to go with the 5kt hubs.
There is no problems. The rear shafts are a bit longer, but that is
taken care of by the wider front track provided by the 5kt struts.
To supply the caliper (which now is on the front side of the strut) with
fluid I used an hard line extension and welded in a bracket simular to
the original one.
I also used 5kt tie rods. They use larger bolts on the inner part so I
had to modify the bracket that holds them to the rack to allow for
You also need to use Ur-q ball joints because they are larger and
regular joints will have too much clearance in the strut.
The strut got the 4k/Coupe spring seat welded in as well as Ur-q
shocks. 4k/Coupe are too small and 5kt shocks have a different top
portion of the shock shaft.
Alignment did not go that smooth though. The Ur-q ball joints ran out
of adjustment and it was impossible to set it perfectly to speck. I
don't understand that since most of the components are the same to Ur-q,
ball joint, control arm, subframe, position of upper strut bearings,
Ur-q shocks? I will in future take the control arms out and either
provide more adjusment in the ball joint itself or control arm (make
holes into slots). It doesn't need much though.
I will post the procedure on my web site as well as some pictures in the
Rears have been done lont time ago. It was a simple thing of swaping
the hubs to 5kt and drilling the rotor to match the pattern. That's
BTW the Porsche studs make installing of the wheel a joy now.
1982 Audi Coupe Turbo (475,000 km)
1982 Audi Coupe Quattro (155,000 km) Coupe with 4kq floor
1986 Audi 4000 S Quattro (346,000 km) soon to be 5 bolt pattern
C.E.O. of lastminuteallnighterrollthedice inc.