DIY - Easy clutch grab adjustment (~10 mins)
 

Purpose:
For members looking to bring their clutch grabbing point closer (or farther) from the floor due to personal preference.

Tools Necessary:
- 12mm open-end wrench
- 14mm open-end wrench

If you go under your steering column you will see the clutch master cylinder coming thru the firewall, just above the accel. pedal (I couldn't find it at first because cars I had before have it right behind the clutch... anyway) double-check you're looking at the right one by pressing the clutch with your left hand & watch the bracket/ cylinder move in & out.

You will see that the master cylinder bolt (w/e) threads into that bracket, & is held in place by a 12mm hex nut; pull out a 12mm open-ended, loosen the nut (too difficult to explain direction based on your orientational awareness; just be sure to note the thread pattern to know how you should turn to loosen it); slightly press clutch pedal with hand to remove tension from bolt, then with right hand screw the threads into the bracket; this will effectively bring your pedal closer to the ground & your grab point as well;

I've messed with different points all week & let me save you R&D; the most comfortable point for intuitive starts/ rolls off the clutch, & heel-toe downshifting; screw in until the clutch pedal sits ever so slightly lower than your brake pedal.

Test setup by getting in drivers seat, turn your car on, & test grab point by putting into first & letting out very slowly with no gas input; take note of when your car ever so slightly moves forward; next run forward a few feet, STOP completely, then immediately shift into reverse; if you get no unusual hesitation or grinding then move back & repeat this (forward, stop reverse) until you feel comfortable with your grab point & make sure you aren't grinding gears.

Tighten the bolt & one final thing, look at the front of your clutch pedal, the first sensor up is for your cruise control & I believe relates to your gear indicator display (if you have it enabled); basically the gear displays only with clutch out, but now that you put your pedal closer to the floor it does not engage the switch on the sensor.
In the same fashion that you loosened the clutch master cylinder nut, use a 14mm to loosen the nut attached to the sensor; it doesn't actually thread into the bracket, so you don't have to turn the sensor in; with the nut loose just slightly push it in to get the sensor switch in contact with the clutch pedal (fully depress the switch onto the pedal); just make sure it isn't pushing force down on your pedal, or this will probably put wear on your clutch ( my suggestion is to pull up on your pedal while you push the sensor into place; then tighten nut.

Now you are all set!; your clutch point is optimally adjusted for all sorts of driving, & your cruise control/ gear indicator still functions =D

*Video of the process; uploaded from forum member @JonnyRocket!
[ame="http://www.youtube.com/watch?v=ScZFQ0j5beY"]BRZ/FR-S Clutch Pedal Adjustment DIY - YouTube[/ame]

Nice! Added this to the DIY Directory:
http://www.ft86club.com/forums/showthread.php?t=7365

+Bump for good info!

Awesome. Thanks a ton!

Any chance of a picture?

I found two nuts (they are on both sides of the black bracket against which the clutch pedal rests and the appear to be the same size). They are fixed on a treaded tube through which a small white nylon actuater protrudes.

I really want to do this mod, but I am reluctant to screw up anything.

When I loosened the 12mm nut from the clutch cylinder actuator, it did nothing to the travel -- the small bracket that connected the cylinder acutating rod and the rod that goes across and back over to the actual clutch pedal does not move, so no adjustment was given. I must be doing something wrong so I've given up for today. its over 100F outside anyways, lol.

its a really tight space and i was upside down for most of it. its totally worth it though.

the 12mm nut is behind the bracket. you won't be able to see it so you need to feel for it with your wrench. just get it loose and you can undo it with your finger. to actually adjust the pedal height, you need to press the clutch in just the right amount and turn the rod with your fingers. it took me some tries to start getting the rod turning, but once you figure it out, its not that bad.

http://i.imgur.com/evsDf.jpg

Yea, I couldnt get the damn rod to turn- lol I suck. I'll be more willing to give it another shot once the temps drop below 100F tonight.

had to do this to my ms6 when i first bought it. excellent great to know its an option~! thank you!:party0030:

Thanks for the 'thanks' & input everyone; sorry for my late response; thanks for the good picture ducks!

Yes, once you loosen the nut, you have to use some pressure on the clutch pedal in order release tension on the bracket & clutch master bolt. then you can screw in the bolt to bring the pedal down; let me know how yours turns out! =D

I believe you are looking at the cruise control switch; that's the final adjustment you make after you adjust pedal height, just to make sure the white switch (actuator) comes in contact with the pedal as it rests.

What you should be looking at for pedal adjustment is the bracket & clutch master protruding through the firewall, seen above the gas pedal; it's way up there; press the clutch with one hand to see which one moves; lmk how yours works out! =D

Any vids? Lol I know it'd probably be difficult to record down there but if it's possible that'd be great :) great post btw.

Big Thanks for the DIY instructions Koji! I just finish doing mine and it made the driving experience even better.

^ Awesome! I'm glad it worked out well for you =D

I definitely feel that a big part of your connection with the car & driving is how much control & awareness you have over the transmission and gear selection; next big mod for a boost in driving feel would be a solidly weighted, countersunk shift knob; working on prototyping one through a reputable team right now actually; look forward to the product reveal & possible group buy thread haha

Finally got around to adjusting mine. Clutch was cake, the brake pedal was tough. Now all flush with the accelerator. Side foot heel/toe even with my little size 9's. My back is wrecked, but it's worth it. Thanks.