so talking to some of the boys here and seems to be that their is some unknown mistery about our manual racks.
heres some info ive been able to gather by having an Ae86 GTV rack and Standard Rack side by side
different types: Manual racks
Factory
1. GTV
2. Standard
Part #'s
1. ER2 - 40
2. ER1 - 10
Turns Lock to Lock:
1. 3.6 / with AJPS Lock spacer - 3.9!! will massive angle
2. 3.3
Distance from case end to Rack end (see pic below)
1. 156mm
2. 144mm
Aftermarket:
Quafie
*the part number is on the drivers side mount.
*Turns lock to lock were measured with the racks on the floor, marking a point and counting turns of main input shaft
* the noticable difference was once both rack were at full lock the amount of travel was visuably noticable as u can see above (case -Rack end distance mm)
pics to explain below
fee free to add to it