john pryor
|
| posted on 22/2/13 at 08:09 AM |
|
|
iva failer
Hi just failed iva test front wheels do not center i have just built a bog standerd locost used the origanal escort rack same
wheels over inflated tyres everthing seems loose help.
Also co gas was high 8.71 max is 4.58 have same carb webber has been factory o/h engine has been bored and o/h could
it just be air screw adj ?
HElp Thanks john.
jcp
|
|
|
|
|
designer
|
| posted on 22/2/13 at 08:52 AM |
|
|
It's worth getting the suspension set up by a specialist.
|
|
|
panichat
|
| posted on 22/2/13 at 09:21 AM |
|
|
Self centring
Hi
My book locost failed on this. I got the tracking set up properly and it passed, but still didn't centre in the way I wanted.
I welded wide upper wishbone brackets on to give more castor adjustment and replaced the sierra steering column bearing with a spherical bearing which
made a small improvement. The thing that made the most difference was adding a shim in the steering rack box to free it up.
If I was doing it again I would try the tracking set up and extra shim first before getting the welder out.
Good luck
Dave
|
|
|
snapper
|
| posted on 22/2/13 at 10:15 AM |
|
|
The quick trick for IVA ( you should do it properly in slow time) is to pump up tyres to 30+ psi and put some toe out to the setup
This is only a temporary fix
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
|
|
|
big_wasa
|
| posted on 22/2/13 at 04:54 PM |
|
|
Well known cock-up in the book that the 7deg of castor was only 3.5deg. Ive made mine with the full 7 and should be fine but it doesnt center like a
production car.
|
|
|
PeterV
|
| posted on 22/2/13 at 06:37 PM |
|
|
quote:
Originally posted by snapper
The quick trick for IVA ( you should do it properly in slow time) is to pump up tyres to 30+ psi and put some toe out to the setup
This is only a temporary fix
This tip worked for me.
I shimmed top wishbones back by 6mmm (Max I could do due to shock coils would touch) for a more permanent fix. Need to move bottom next to finish the
job completely.
|
|
|
BenB
|
| posted on 22/2/13 at 06:46 PM |
|
|
Other bodge is valve springs inside the steering rack boots  limits the steering though when they get coil bound but does the trick.
|
|
|
Trollyjack
|
| posted on 22/2/13 at 07:19 PM |
|
|
Not enough caster have it checked
TrollyJack
|
|
|
40inches
|
| posted on 22/2/13 at 08:30 PM |
|
|
quote:
Originally posted by BenB
Other bodge is valve springs inside the steering rack boots limits the steering though when they get coil bound but does the trick.
Used to be the case for SVA Ben, but the examiners now feel for the springs in the boot, fail if they can feel them
|
|
|
