Hi,
Right so little background.
Me and my mate run an EK4 track car as a budget build.
Car has S80 box, good coileys, rear EK9 arb, rear asr brace and full front ITR subframe and rack setup.
Last year the car had a very good ballence of front and rear grip.
This year we have introduced the front ITR subframe along with ARB and rack.
The car now understeers loads. It takes a massive flick to get the back going.
We run r888 in 225/45/15 all round with 21psi front and 20 back when HOT. (this equates to 16psi front 18psi back when cold)
the setup is
front camber 3ish
toe out total 10 minutes
rear camber 1
rear toe in total 10 minutes.
The back grips really well but my question is how can we get more grip on the front? and why have we lost front grip or gained from last year? is the ITR front arb thicker than the ek4 one??
I did think about an air dam on the front but that wouldn't help with corners and would take a little straight line speed. Im looking for an easy answer to this without removing rear grip.
just to note. we haven't used front camber arms as any we have used have hit the top turrets and started to bend so we didn't go down that route as it would have ruined a good track day. (kinda tempted to cut and weld them shorter to get to 4 degrees neg.
anyway any advice would be lovely.
ed
Right so little background.
Me and my mate run an EK4 track car as a budget build.
Car has S80 box, good coileys, rear EK9 arb, rear asr brace and full front ITR subframe and rack setup.
Last year the car had a very good ballence of front and rear grip.
This year we have introduced the front ITR subframe along with ARB and rack.
The car now understeers loads. It takes a massive flick to get the back going.
We run r888 in 225/45/15 all round with 21psi front and 20 back when HOT. (this equates to 16psi front 18psi back when cold)
the setup is
front camber 3ish
toe out total 10 minutes
rear camber 1
rear toe in total 10 minutes.
The back grips really well but my question is how can we get more grip on the front? and why have we lost front grip or gained from last year? is the ITR front arb thicker than the ek4 one??
I did think about an air dam on the front but that wouldn't help with corners and would take a little straight line speed. Im looking for an easy answer to this without removing rear grip.
just to note. we haven't used front camber arms as any we have used have hit the top turrets and started to bend so we didn't go down that route as it would have ruined a good track day. (kinda tempted to cut and weld them shorter to get to 4 degrees neg.
anyway any advice would be lovely.
ed