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'Clutch Helper' Spring Mod

370Z clutch spring

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#1 Paul_S

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Posted 07 November 2011 - 09:58 pm

This is a copy & paste of a 'How-To' I wrote in the Members area. I thought I would share it with you as someone in the US asked me for my guide :)
...

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!!!):

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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):

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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:

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And the spring assembly looks like this:

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Here is an 'exploded view' of the assembly (see the new spring beneath to compare):

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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:

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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) :)


Enjoy :)
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'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


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#2 Kev T

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Posted 08 November 2011 - 09:27 am

Hi Paul, where did you get the new spring from ?

#3 Paul_S

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Posted 08 November 2011 - 06:30 pm

You lucky people! :bounce:

When I imported my spring I bought 4 spares since the shipping costs were the same.

If anyone wants one (there are now 3 left) please let me know. It will be £11 delivered :)

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


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WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#4 Paul_S

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Posted 21 November 2011 - 11:23 am

If you want to give this a go I have 3 springs left for sale. I can bring some to the Xmas meet if you want (but me a beer and I'll fit it for you - but make sure I do the job before the drink!)

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


gallery_245_77_177171.png

 

 

WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#5 Badger

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Posted 21 November 2011 - 12:21 pm

Bring them to the party, for £11 who can say no :D

#6 Paul_S

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Posted 21 November 2011 - 12:32 pm

Bring them to the party, for £11 who can say no :D

Will do mate. It'll be a tenner since there's no postage :)

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


gallery_245_77_177171.png

 

 

WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#7 Kev T

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Posted 21 November 2011 - 12:47 pm

Hi Paul, just fitted spring took about 30 mins as you suggested, i used molegrips instead of pliers to release pin as it was quite stubborn, i will give it a test run later and let you know my thoughts.

#8 Steves370z

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Posted 21 November 2011 - 12:53 pm

Keen to hear your views on it Kev ....... :thumbdown: or :thumbs:

#9 Paul_S

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Posted 21 November 2011 - 01:38 pm

Hi Paul, just fitted spring took about 30 mins as you suggested, i used molegrips instead of pliers to release pin as it was quite stubborn, i will give it a test run later and let you know my thoughts.

Nice one mate, I'd be interested to hear that you think :)

I found that using a screwdriver as a lever to release the pressure on the spring mechanism made the pin lose enough to slide out quite easily.

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


gallery_245_77_177171.png

 

 

WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#10 Kev T

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Posted 21 November 2011 - 04:23 pm

Had a run to dentist and back with new clutch spring fitted, there is a definite better feel to the clutch action and easier judgement of the biting biting point which is quite subtle and for £10/11 well worth it.

#11 Paul_S

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Posted 21 November 2011 - 10:17 pm

Had a run to dentist and back with new clutch spring fitted, there is a definite better feel to the clutch action and easier judgement of the biting biting point which is quite subtle and for £10/11 well worth it.

Thanks for your feedback Kev :thumbs:

It just feels 'better' doesn't it?

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


gallery_245_77_177171.png

 

 

WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#12 Kev T

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Posted 22 November 2011 - 08:22 am

Yes it is hard to describe but certainly an improvement, well done Paul for your time and trouble 'cos getting those pictures must have been a contortionist act in itself .

#13 Kev T

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Posted 23 November 2011 - 01:04 pm

The new feelgood clutch pedal paid for itself today, i always put the growler to bed for the winter and my garage is approached by unmade track & grass on slight incline which i reverse into at an angle, normally i slip and slide my way into garage but the more sensitive feel to the clutch made the job a breeze.

#14 Paul_S

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Posted 23 November 2011 - 03:33 pm

The new feelgood clutch pedal paid for itself today, i always put the growler to bed for the winter and my garage is approached by unmade track & grass on slight incline which i reverse into at an angle, normally i slip and slide my way into garage but the more sensitive feel to the clutch made the job a breeze.

Excellent, I'm pleased you are pleased with it. It's not just my imagination then! :lol:

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


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WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#15 Paul_S

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Posted 28 November 2011 - 10:26 pm

So I put them in the car. Took them to the Xmas party. Left them in the car, and drove home again :lol:

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


gallery_245_77_177171.png

 

 

WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#16 Kev T

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Posted 29 November 2011 - 05:21 am

So they were ' Santa's' little helper too, ah bless !

#17 Paul_S

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Posted 29 November 2011 - 07:27 pm

That made I chuckle! :clap:

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


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WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#18 andy.j

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Posted 29 November 2011 - 09:01 pm

I'll take one. It's about time I made some improvements. Over one year, and the most I've done is stick some felt on the back of the leather of stop the seats squeaking against the plastic behind it!

PM sent.

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#19 Paul_S

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Posted 29 November 2011 - 09:21 pm

Cheers Andy. It's great you're keeping the car :)

We'll make sure there are plenty of good meets in 2012 so you can make good use of it :drive1

'A standard limited edition Yellow 370Zwith a plethora of minor bespoke mods' 

 

*one of 40 don't you know!

 
 


gallery_245_77_177171.png

 

 

WARNING - DO NOT TRUST NavTool WITH YOUR MONEY


#20 Squarehead

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Posted 17 July 2015 - 10:24 pm

Fitted mine today, I bought the one of eBay US, it's a bit fiddly to fit. Thanks for the kitchen roll tip Paul. I found if you wrap the old spring with kitchen rolll it held it all together.  One thing I should be added to the guide is, you need to press the clutch down to release the tension so you can remove the old spring, and likewise when fitting the new one - press clutch down.

 

I've noticed a slight improvement but no wow factor yet...I am wondering if my driving technique is still used to the old way and maybe it just needs time.


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