Nissan 370Z Forum

Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   Clutch pedal too soft/no feel? Remove the helper spring! (http://www.the370z.com/engine-drivetrain/36048-clutch-pedal-too-soft-no-feel-remove-helper-spring.html)

spearfish25 05-10-2011 12:04 PM

Can you remove the spring and then reinstall the assembly and pins? I'd guess that would give lateral stability to the pedal without the resistance of the spring.

JapanLio 05-10-2011 12:40 PM

Quote:

Originally Posted by esfourteen (Post 1100119)
the clutch on these cars is the lightest clutch pedal I have ever felt in any car. you don't feel the pressure plate at all with the spring installed.

Is anybody available in the bay area (cupertino or San jose West) with a manual transmission 370Z so I can evaluate my clutch feeling ?

SE 05-10-2011 12:56 PM

Quote:

Originally Posted by spearfish25 (Post 1101000)
Can you remove the spring and then reinstall the assembly and pins? I'd guess that would give lateral stability to the pedal without the resistance of the spring.

I tried looking at a diagram in the FSM briefly, but it doesn't look like it would do much. The problem is that it's not the pin assembly by itself that gives the pedal it's stability, but rather the heavy spring forcing itself upwards against the pedal. Even by repacing the spring with a softer one than OEM you could theoretically keep some of the stability, but it still wouldn't be close to the OEM specs. Realistically speaking, it's up to those who choose to do this mod whether the percieved benefits outweigh the potential long term issues.

SE 05-10-2011 12:57 PM

Quote:

Originally Posted by JapanLio (Post 1101098)
Is anybody available in the bay area (cupertino or San jose West) with a manual transmission 370Z so I can evaluate my clutch feeling ?

I'm in East Bay but I frequently go down to the South Bay areas. If you want, we can meet up sometime or set up a small meet this weekend.

esfourteen 05-10-2011 01:45 PM

Quote:

Originally Posted by spearfish25 (Post 1101000)
Can you remove the spring and then reinstall the assembly and pins? I'd guess that would give lateral stability to the pedal without the resistance of the spring.

you can't just remove the springs and re-install the assembly unfortunately, honestly this isn't that much of an issue from what I can see, the pedal has little side to side movement. G guys have been running with this removed for years and not reporting any problems.

I'm just looking into replacing the spring for longevity if its a simple case of finding a proper spring. If I don't find one im certainly not going to re-install the old one.

F4iMerlin 05-10-2011 08:01 PM

After running it for a day, I decided, while it has a more realistic clutch feel, I didn't like the free-play in the pedal. Re-installed for now.

OKC Z 05-11-2011 05:28 AM

I did this myself and all I can say i love it. Its alot smoother and easier to shift it kinda reminds me of the exedy hyper single i had in another car. The only thing that got me thinking was if there will be any negative side effects. You guys think it will mess something up in the tranny? They put it on for a reason, which I dont know why.

KingZee 05-11-2011 09:23 AM

Quote:

Originally Posted by OKC Z (Post 1102957)
I did this myself and all I can say i love it. Its alot smoother and easier to shift it kinda reminds me of the exedy hyper single i had in another car. The only thing that got me thinking was if there will be any negative side effects. You guys think it will mess something up in the tranny? They put it on for a reason, which I dont know why.

You might wanna read the last couple pages of this thread.

weiboy718 05-11-2011 09:33 AM

When you guys mod your car do you worry about ruining something? This mod is by far the easiest that costs only a few minute of your time. I wouldn't worry about it too much. Guys had been running without that spring since 2009 and still no issues.

JB1 05-11-2011 09:46 AM

I finally drove my car today after taking the spring out. I like it a lot. Feels so much better. No more artificial linear crap.

Yes, it takes a wee bit more effort to press the pedal down and there is a bit of free play at the top, but in my opinion these little down sides do not outweigh the benefits. I'll now try to find a softer spring to see if this will get rid of the free play and add some lateral stability without loosing the added feel.

KingZee 05-11-2011 10:17 AM

Quote:

Originally Posted by weiboy718 (Post 1103143)
When you guys mod your car do you worry about ruining something? This mod is by far the easiest that costs only a few minute of your time. I wouldn't worry about it too much. Guys had been running without that spring since 2009 and still no issues.

I'm not saying by any means to not do this but when you mod a car you usually replace something with a "better" thing or add something that wasn't there before. This is removing something without putting anything different in its place so I understand the concern for long term damage.

OKC Z 05-11-2011 10:38 AM

Quote:

Originally Posted by KingZee (Post 1103123)
You might wanna read the last couple pages of this thread.

I already read them. The thing is someone came on and said it might cause long term damages. But everyone kinda just went on and still did it. But what if that one person is right.

esfourteen 05-11-2011 10:46 AM

Quote:

Originally Posted by OKC Z (Post 1103297)
I already read them. The thing is someone came on and said it might cause long term damages. But everyone kinda just went on and still did it. But what if that one person is right.

All I can tell you is that there is very little side to side play with the spring removed. His concern was that it might be possible to put extra stress on the master cylinder because this spring is no longer there. While it's good to be aware of possible issues, no one in the G community has reported any kind of failures related to this mod so at this point its just speculation.

If you are still debating the possible ramifications don't do this mod, the clutch clearly doesn't bother you enough to make it worth it :tup:

bradz 05-11-2011 11:35 AM

Quote:

Originally Posted by JB1 (Post 1103171)
I'll now try to find a softer spring to see if this will get rid of the free play and add some lateral stability without loosing the added feel.


Yes, do this and you can have the benefits of both. With the softer springs, you get rid off the play with the same feel without the spring. I know because this mod was very familiar with german cars like Porsche.

KingZee 05-11-2011 11:51 AM

Quote:

Originally Posted by bradz (Post 1103389)
Yes, do this and you can have the benefits of both. With the softer springs, you get rid off the play with the same feel without the spring. I know because this mod was very familiar with german cars like Porsche.

Why do so many car companies do this sh*t to begin with? Who in their right mind prefers this crappy linear feel over an actual clutch feel?

weiboy718 05-11-2011 12:01 PM

Maybe they designed it That way so females can drive it with ease

esfourteen 05-11-2011 12:08 PM

Quote:

Originally Posted by weiboy718 (Post 1103452)
Maybe they designed it That way so females can drive it with ease

one of my best friends who's a girl drives a 2006 WRX, her clutch is still heavier than the Z with the spring removed :icon17:

esfourteen 05-11-2011 01:02 PM

for those interested im giving the spring to a local company near me to get a spring matched up but 75% easier to compress.

weiboy718 05-11-2011 01:13 PM

Quote:

Originally Posted by esfourteen (Post 1103644)
for those interested im giving the spring to a local company near me to get a spring matched up but 75% easier to compress.

#1 weiboy718
#2
#3
#4
#5

Add yourself to the list

cruzmisl 05-11-2011 01:48 PM

#1 weiboy718
#2 cruzmisl
#3
#4
#5

Armonster 05-11-2011 02:27 PM

I wouldn't mind getting in on this spring business (pending a cost estimate and verification that it actually fits and works properly).

JB1 05-11-2011 02:36 PM

Interested in the spring, if I can't find something locally.

KingZee 05-11-2011 03:30 PM

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4
#5

KingZee 05-11-2011 03:32 PM

Quote:

Originally Posted by weiboy718 (Post 1103452)
Maybe they designed it That way so females can drive it with ease

:rofl2: I don't see how the linear feel is easier though.

buddahson 05-12-2011 06:59 PM

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5

roplusbee 05-13-2011 03:53 AM

I think I trashed my C-shaped dealios though, lol.

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee

370zFORme!! 05-13-2011 04:28 AM

Quote:

Originally Posted by roplusbee (Post 1108035)
I think I trashed my C-shaped dealios though, lol.

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!


Fixed. C-shaped dealios ftw

spearfish25 05-13-2011 08:30 AM

Springs are cheap. I'll get in on this action.

Motion for them making a spring 'kit' that includes 3 or 4 springs of varying force. Say 25%, 50%, and 75% of OEM spring force.

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!
#7 Spearfish25

keioh 05-13-2011 10:04 AM

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!
#7 Spearfish25
#8 keioh
_________________

esfourteen 05-13-2011 10:58 AM

Quote:

Originally Posted by spearfish25 (Post 1108187)
Springs are cheap. I'll get in on this action.

Motion for them making a spring 'kit' that includes 3 or 4 springs of varying force. Say 25%, 50%, and 75% of OEM spring force.

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!
#7 Spearfish25

haha ok well they should have some news for me next week, I will find out about a few different spring rates but initially I asked for 75% softer.

JB1 05-13-2011 01:54 PM

I found a softer spring that somewhat fits at my local Ace hardware. The diameter was good, but it was too long so I had to shorten it. (EOM left, Ace Right)

http://i1189.photobucket.com/albums/...Z/a99c873a.jpg

The problem of cutting it short is that I cannot get the cut end nice and flat. Look at the non-cut end or at the OEM spring and you will see how the end of the spring is bend back and ground off. I didn't have the proper equipment to replicate this. So when I put it back into the assembly it sits a bit crooked, it tilts to one side a bit:

http://i1189.photobucket.com/albums/...Z/92f32d74.jpg

http://i1189.photobucket.com/albums/...Z/c791b0a6.jpg

Once it's all installed it looks OK, but I am a bit worried about the long term effect of the crooked spring:

http://i1189.photobucket.com/albums/...Z/09292a4e.jpg

So esfoutheen, put me on the list for a proper replacement spring, with nice flat ends. My hacked up one works for now, but I would like to have one that properly fits for the long run.


Bottom line is: swapping the stiff OEM helper spring for a (much) softer one does improve the clutch feel significantly and it takes care of the slack at the top that would otherwise be there when you take the spring out altogether.

esfourteen 05-13-2011 02:27 PM

Quote:

Originally Posted by JB1 (Post 1108819)
So esfoutheen, put me on the list for a proper replacement spring, with nice flat ends. My hacked up one works for now, but I would like to have one that properly fits for the long run.


Bottom line is: swapping the stiff OEM helper spring for a (much) softer one does improve the clutch feel significantly and it takes care of the slack at the top that would otherwise be there when you take the spring out altogether.

Yeah I had a feeling anything I found at a store would need to be cut and then might not sit right, glad it's working for now though.

KingZee 05-13-2011 03:18 PM

Quote:

Originally Posted by JB1 (Post 1108819)
Bottom line is: swapping the stiff OEM helper spring for a (much) softer one does improve the clutch feel significantly and it takes care of the slack at the top that would otherwise be there when you take the spring out altogether.

That's awesome. Rep for you.

Waffles 05-14-2011 12:18 PM

Sounds like a no-brainer mod, I'll sign up for one too!

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!
#7 Spearfish25
#8 keioh
#9 JB1
#10 Waffles

Ron 05-14-2011 12:39 PM

I just took the spring out and left the assy in there, it makes no difference as far as lateral support goes since the pedal still moves sideways a bit. I want in on the softer spring please :)

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!
#7 Spearfish25
#8 keioh
#9 JB1
#10 Waffles
#11 Ron

Drex 05-14-2011 05:07 PM

i'm in

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!
#7 Spearfish25
#8 keioh
#9 JB1
#10 Waffles
#11 Ron
#12 Drex

370zFORme!! 05-14-2011 05:24 PM

Lol this is starting to become a pretty good sized group buy.

esfourteen 05-14-2011 07:01 PM

Quote:

Originally Posted by 370zFORme!! (Post 1111001)
Lol this is starting to become a pretty good sized group buy.

Apparently, I don't even have a spring in hand yet lol. I will definitely update everyone once I know what our options are in terms of spring rate, I'm going to try out a 75% weaker spring first.

Not sure the best way to go about facilitating the sale of the springs to everyone either, if I were to purchase/ship them myself I believe I would need some sort of vendor membership here which I'm not looking to do really (I think its like $100 a year). I'm certainly not looking to make any money here.

Ron 05-14-2011 10:53 PM

Simota did something similar with his overlays. I don't think you'll need a vendor membership for this.

B996 05-14-2011 11:37 PM

#1 weiboy718
#2 cruzmisl
#3 KingZee
#4 buddahson
#5 ROplusBee
#6 370zforme!!
#7 Spearfish25
#8 keioh
#9 JB1
#10 Waffles
#11 Ron
#12 Drex
#13 B996


All times are GMT -5. The time now is 06:50 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2