I was reading on a US forum about replacing the spring that makes the 370Z clutch so light in operation. The idea is to replace the spring with one offering less 'assistance' so there is more 'resistance' and, therefore, more feel through the clutch pedal.
'Why not?' I thought - so here it is...
This is the spring I am talking about replacing (notice I haven't removed the blue film from the foot rest - I'm never going to take it off!!!):
You will need a set of long-nose pliers to pull off the circlip (marked in yellow) and a screwdriver to help remove the pin (marked in red):
I would strongly advise you have a load of paper towels at hand. The pin is covered in grease and, whilst you will want to keep as much of it as you can on the pin, it gets everywhere.
So, pull off the circlip and use the screwdriver to lever between the bottom of the spring assembly and the black bracket. Levering upwards takes the tension off the pin so you can pull it out with the pliers.
The spring assembly should stay in place (mine did) but beware that there is another spring in there keeping it under a small amount of tension. I decided to wrap the whole assembly in paper towel so it kept it all together (saves the spring flying off) and keep my hands as clean as possible.
Slightly raise the spring assembly and pull it towards you to release it.
The part remaining on the car looks like this:
And the spring assembly looks like this:
Here is an 'exploded view' of the assembly (see the new spring beneath to compare):
Now all you need do is refit the spring assembly in reverse order. Again, I used a screwdriver to lever the assembly up and allow the pin to slide in easily. Be careful when reattaching the circlip as if you don't get it on right it might spring off and be lost forever! If you lost a lot of grease or you got any grit on the pin I would advise cleaning it off and reapplying some grease before reassembling.
Here is the final picture of the new spring installed:
I was a little sceptical as to how much of an improvement this would be. Oh me of little faith! - it's brilliant! The clutch is barely any heavier in operation (the new spring apparently offers only 20% as much assistance as the original item) but the extra feel is amazing.
To give you an analogy - It's a bit like I was driving the car in builders boots before and now I'm driving in racing shoes.
To sum up - a brilliant mod that is cheap and took about 30 mins to fit (including taking photos)