This Modification is intended for those who wish to have more positive feedback when shifting on their G25 shifter unit as well as heavier push-down to prevent accidently shifting into reverse gear.
- Allen wrenchs (Hex key)
- #1 Philips screwdriver
Opening the shifter
1. Undo four screws and remove the lower table clamp.
2. Remove both silding table clamps by twisting the top knobs while holding the lower cap-nut with a 10mm wrench.
3. Remove the shift know by lifting the plastic cap and unscrewing a Philips screw underneath.
4. Remove shift boot with 2.5mm Allen wrench.
5. Three Philips screws underneath, remove them.
6. Flip the unit over and remove all eight screws.
7. Lift up the upper enclosure with a little bit of wiggle, there are wires connected to the underside of the button panel, be careful.
8. (optional) Because the wires are pretty short, unplug all three connectors to be on the safe side.
Removing the shifter unit
9. Seperate the shifter unit by removing all siz screws
10. Squeeze both sides as shown (to stop the locking spring/bearing from shooting out) and lift up and towards the back of the shifter.
11. Lay the unit on its right side and remove the left metal panel.
Remove both ball bearing and spring.
Increase push-down reverse resistance
12. Remove locking screws on both sides of the rod with an Allen wrench.
13. Fit a rubber O-ring over the lower part of the rod, the added friction will require stronger downward push to engauge reverse gear.
*Use a rubber O-ring with 1/4" inside and 3/8" outside diameter.
14. Reinstall the spring.
15. Insert rod back into position and resintall locking screws on both sides.
Increase gear-shift resistance
16. Insert a spacer under the position locking spring,
* diameter of spacer needs to be 3/16" and approximately 1/4" in length, I used an aluminum spacer but can be made out of other material as well.
17. Place spring and ball bearing back in position and reinstall the left metal plate on top.
18. This step might be a little bit tricky, remember that the spring is now under much higher pressure, press directly above it.
I find it easier to initially position the ball bearing in the center position, after compressing the spring move shift rod into
2nd gear locking assembly in place. (Refer to the video above)
19. Once again sqeeze both sides as shown and insert the assembly back into enclosure.
* make sure the potentiometer is pointing down as shown.
20. Reconnect the cables.
21. Reinstall the adjustment knob and reassemble the enclosure.
22. That's it! Make sure everything works!