Clutch pedal too soft/no feel? Remove the helper spring!

geokots

I'm going to be doing this mod tonight. I did it on my Mustang a few years ago and I know it's pretty straight forward.

Before I do, I have a couple quick questions.
1. Is there any downside to this? Yes I know, I'm sure someone asked and answered but I randomly looked through 4-5 pages of the 37 and didn't see anything with certainty.
2. Are people generally doing the removal or putting the softer spring in. I only did the removal on my last car.

TIA

DieselKrampus

I tried the softer spring for a few weeks, didn't feel like it made a big enough difference in feel. Ended up deleting the spring and the entire spring carrier assembly from the pedal. I also adjusted the little threaded clevis where it attaches to the clutch pedal. Much better than the factory setup IMO, although I do plan to get an RJM pedal eventually, this is good enough for now.

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2010 Nismo 370Z #574 . Z1 Post-MAF Tubes . Drop-in dry filters . Beluga Axleback . Z33 Shift knob

Optimiser

I removed it completely.

Geoff-AU

I removed it but didn't like the free end-play without any spring, so I found a much softer one to put back in.

Optimiser

Fair enough. It doesn’t bother me.


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DieselKrampus

FWIW, after my tinkering with the clevis on the end of the master cyl pushrod and generally studying the way that the whole assembly works, I identified that essentially 90% of that "free play" or "slop" in the pedal travel is actually caused by the very poorly-fitting OEM clevis and the pin used to secure it to the clutch pedal arm.

The helper spring essentially holds tension on this very sloppy fitting, so that you don't notice it nearly as much with the spring installed. The slop is still there, all the time, regardless if the spring is installed or not. You just don't tend to notice it with the spring, as the resistance of the spring blends in with the force of the master cyl against your foot as you depress the pedal. This masks the ability of your foot to feel that bit of slop at the beginning of the pedal travel.

RJM now includes a much better designed, tighter-tolerance HD clevis end with all their newest pedals. My thinking is that even the OEM pedal setup could be improved with a better clevis and pin used in the assembly.

__________________
2010 Nismo 370Z #574 . Z1 Post-MAF Tubes . Drop-in dry filters . Beluga Axleback . Z33 Shift knob