Group N Beam Mounts And Standard Dampers

[Guest tim_1.9]

1. I am having a replacement beam refurbed for me and have asked for the mounts to be replaced at the same time. It is a road car and I want to keep it civilised, hence Gp N. Now want I am really inerested in is what the Gp N kit consists of, I was assuming stiffer rubber, or poss polyurethane, both front and rear. I was advised by the person doing the rebuild (whom I realise will read this! sorry for getting a second opinion!) that I needed Rubber at the front with Aluminum at the rear - which sounds suspiciously like Gp A to me. Any ideas?

 

2. Where are they availible from? I found a mention for SBC, but being fairly new here I am not sure who they are. Constella offered to machine a polyurethane set to the same pattern as the Gp A ones. Will that work?

 

3. Whilst the beam is being rebuilt should I ask for a new set of sandard dampers to be fitted? I plan on replacing all the dampers in the next year or so. Would it hurt to drive with new rears and old fronts?

 

Tim

[kyepan 291]

just a general note on how they affect things.

 

If you put them in, say good bye to lift off oversteer, the back end will remain pretty much rooted what ever you do to provoke it.

[pug_ham 244 3 Cars]

Group N rear beam mounts are just stiffer versions of the rubber mounts that fit at the rear of the beam support arms on either side. The beam front mounts stay standard & nothing changes. The group N rear mounts are avaialbale from places such as SBC (details below), Shenpar, AB Motorsport & West Midlands Motorsport.

 

Group A beam mounts replace all beams mounts, the front ones are replaced with the polyurethane bushes & the rear with aluminium ones.

picture of group A mounts kit from BBM

 

The kit in the above picture is available through BakerBM.com. The owner (Stew205) is a member on here & offers a discount to people on this forum.

 

I expect the kit from Stew will workout cheaper than those from Constella & is a direct fit.

 

SBC;

Skip Brown Cars

Ridley Green Garage

Ridley

Tarporley

Cheshire

CW6 9RY.

01829 720492.

 

If your rear shocks are Ok & you intend replacing them in future why not leave them for now until you do?

 

Graham.

[Guest tim_1.9]

Not being too gifted with a spanner, I assumed that it would save a lot of hassle to change the shocks whilst the beam was off the car and in bits.

 

Think that I will try and order the Gp N mounts - I want to try and keep the car as civilised as possible.

[zilog 0]

just a general note on how they affect things.

 

If you put them in, say good bye to lift off oversteer, the back end will remain pretty much rooted what ever you do to provoke it.

 

I did my rear beam in two steps - first I replaced the rear beam mounts with acetal ones, the car still oversteered afterwards, but with less twitchyness at the limit. Second I replaced all dampers with yellow Koni's (but stock torsion/spring rates), they have gas preload rear and thus add a little static stiffness, and NOW things have gotten really interesting - the car has lots of controllable oversteer and is hilarious to drive.