I've always set my cars with toe out for quick turn in, but, that said they have nearly always been FWD cars with rear that's lively but follows nicely (unless provoked). Speed..... what's that, I have all my fun at sub 70 in this
Hi Adey,
Well the next issue to consider is that your wishbones are also mounted in probably old rubber metallastic bushes which like the old steering bushes move around under a braking load and are probably original to the car.
We motorsport types don't care much about noise or ride, so we fit either home made sold bushes with an oil lite inner bush [4] and press them into the lower wishbones eccentrically and concentrically into the upper wishbones The French however market an expensive bushes kit called a Dangel kit [excuse the spelling] these are lower steel outers with an eccentric bronze inners and can be rotated with a peg spanner to move the lower wishbones up to 6mm each outboard so giving negative camber. This really sharpens the steering response at the expense of noise on rough tarmac roads. As usual if you fix one issue another wants attention, so you need to either reinforce by adding steel plates your top and bottom wishbones a la R8G ones or find some French weld on kits . Next after the tightened up rack track rods and the above well located wishbones, the need the 2 rack mountings to the x member to be reinforced again as the R8G tubular brace which is fitted between the x member towers, and also bolts to the 2 rack fixing bolts.
Toe in can then be played with on the road to give a good turning in feel if required , by putting the steering on full lock and adjust each of the track rod after slackening the lock nuts. Use a tipex pen to mark the thread locations before adjusting, so you can always return to the original settings.
Road springs and bump stops are another permutation to consider, I run my Gordini on its bump stops, but your std rear end will be flexing all over the place as its rubber gearbox side blocks and engine mounts are allowing the engine box axle combo to move alarmingly around inside the chassis. The 1960s Coup Gordini Race series allowed this group 2 upgrade which effectively uses harder shore rated rubber in these 4 main mountings, they also allowed a solid steel girdle around the gearbox side mounts to effectively act like a Watts linkage, I use these on my Competition car.
Finally, its essential that the 2 canvass limiting straps under the axle tubes are in good condition, ideally use new wider R8G ones, with a lowered car as yours, the straps should be just in contact with the tubes to prevent too much tuck under which raises the C of G and this usually ends in a rotational event.
I did make steel straps in a U shape with an adjustable M10 Bolt and nuts below the axle tubes so I could experiment with up to zero droop of the axles and then work back from there.
The above is just a taster as Steve will no doubt advise further as to how to make your car more fun to drive.
Cheers
Dave