Series 3 to wide track.

[guilleracing]

I have a very standard series 3.

 

The ARB makes part of the top wishbone/link

 

I plan to change over to a top wishbone and more modern ARB.

 

What bits do I need to change to go for a wide track at the same time.

 

Cheers,

 

 

 

Greg.

[Nick Chan]

Hi Greg,

 

I have just completed this upgrade on the R1 rebuild I did.

 

Presumably you have an early De Dion car or a live axle one with the bottom trunnion setup? You will need the fixing to secure the top wishbone to the chassis. This requires a hole cutting in the sideskin and the special brackets (available from CC) to be slid through and bolted to the chassis. These fixings share the same bolts as the new front ARB mounts.

 

So you will need :

Upper widetrack wishbones

Lower widetrack wishbones (which have spherical bearings in)

De Dion type ARB with mounting plates

Chassis brackets for upper wishbone front mouting

New uprights to fit the spherical bearings

Steering rack extensions for the track rods

Longer brake hoses

Extensions for your narrow track suspension or widetrack suspension

 

Assuming you have the trunnion set up, the way the lower wishbone bolts to the front of the chassis will need modifying which may require the existing lug to be cut of the chassis and a new boss brazed in to take the usual 19mm headed bolt from the DD setup

 

You can retain your hubs, stub axles, discs and callipers, steering arms, track rod ends as these are identical on either trunnion or spherical bearing upright, its just how they fix to the bottom that is different.

 

Hope that's useful

 

Nick

 

 

[guilleracing]

Brilliant,

 

 

Thank you very much Nick!

 

[Englishmaninwales]

Plus... 8 mm spacer that inserts above the lower spherical joint and a shouldered nyloc for the lower upright to wishbone/spherical joint.