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

bluenoser · 08-11-2011, 11:05 PM

Quote:

Originally Posted by LMBmikeZ

Ya there was a lot of people requesting one not just v8killer!

Also we are still waiting to her how others made out with the other springs they had found! Anyone have any luck?

Ok there's good news and bad news. The Fastenal spring I mentioned earlier doesn't work. The inside diameter of the spring doesn't fit correctly over the assembly. I ordered the day after I measured it and I guess I wasn't paying close enough attention when I placed the order.

The good news is that I found another spring after I realized the error that definitely does work. P/N 72577 at Century Spring is the winner 72577 - COMPRESSION SPRING - Part Characteristics | Century Spring Corp. The spring rate is roughly 20% of the stock spring and it feels very similar to running without the spring installed. The bad news is that you need to order 4 of them to meet their minimum order quantity.

Here are some pics of the Century spring

Stock is on the left, Century on the right

Installed

Vaughanabe13 · 08-17-2011, 08:53 AM

Quote:

Originally Posted by bluenoser

Ok there's good news and bad news. The Fastenal spring I mentioned earlier doesn't work. The inside diameter of the spring doesn't fit correctly over the assembly. I ordered the day after I measured it and I guess I wasn't paying close enough attention when I placed the order.

The good news is that I found another spring after I realized the error that definitely does work. P/N 72577 at Century Spring is the winner 72577 - COMPRESSION SPRING - Part Characteristics | Century Spring Corp. The spring rate is roughly 20% of the stock spring and it feels very similar to running without the spring installed. The bad news is that you need to order 4 of them to meet their minimum order quantity.

Here are some pics of the Century spring

Stock is on the left, Century on the right

Installed

So just to confirm, P/N 72577 at Century Spring does work and fixes the spring problem? If that's the case I'd be willing to get in on a group buy with 3 other people if anyone is interested.

adampetrasek · 08-17-2011, 11:00 AM

Quote:

Originally Posted by Vaughanabe13

So just to confirm, P/N 72577 at Century Spring does work and fixes the spring problem? If that's the case I'd be willing to get in on a group buy with 3 other people if anyone is interested.

I have that spring (Century Spring Product# 72577) installed. It fits perfect and only gets rid of the looseness of the clutch pedal when its not depressed. Otherwise feels like there is no spring installed. Exactly what i was looking for!!!

KingZee · 08-17-2011, 11:25 AM

Quote:

Originally Posted by adampetrasek

I have that spring (Century Spring Product# 72577) installed. It fits perfect and only gets rid of the looseness of the clutch pedal when its not depressed. Otherwise feels like there is no spring installed. Exactly what i was looking for!!!

I might do this too. The esfourteen spring is awesome but I want less.

bluenoser · 08-17-2011, 12:10 PM

Quote:

Originally Posted by adampetrasek

I have that spring (Century Spring Product# 72577) installed. It fits perfect and only gets rid of the looseness of the clutch pedal when its not depressed. Otherwise feels like there is no spring installed. Exactly what i was looking for!!!

I'm glad it's working out for you! I'm happy with it as well. The P/N is definitely 72577

bushman66 · 02-22-2012, 06:01 PM

Just installed the Century Spring and this is without a doubt, the best thing I have done to the car thus far! The clutch now reminds me a lot of the clutch I had in my 66 327 Corvette and 66 GT-350, with maybe a little less effort. I had NEVER stalled a manual transmission car until I got the Z. Now, I will not stall it again...

The increase in pedal effort is negligible, but the disengagement of the clutch is sooo much easier and smoother now. Good trade off IMO.

On another note, I purchased 4 springs, so I may have 2 (or 3) that I will send to someone who needs one for $15+shipping. Shoot me a PM

[QUOTE=bluenoser;1257678]Ok there's good news and bad news. The Fastenal spring I mentioned earlier doesn't work. The inside diameter of the spring doesn't fit correctly over the assembly. I ordered the day after I measured it and I guess I wasn't paying close enough attention when I placed the order.

The good news is that I found another spring after I realized the error that definitely does work. P/N 72577 at Century Spring is the winner 72577 - COMPRESSION SPRING - Part Characteristics | Century Spring Corp. The spring rate is roughly 20% of the stock spring and it feels very similar to running without the spring installed. The bad news is that you need to order 4 of them to meet their minimum order quantity.

LMBmikeZ · 08-13-2011, 12:59 PM

Are u sure that the fastenal spring doesn't work? Looking at the sizes and spec looks like it should be a go!

Anyway I'll be trying one of the ones from fastenal Monday when it gets here!

bluenoser · 08-13-2011, 04:51 PM

Quote:

Originally Posted by LMBmikeZ

Are u sure that the fastenal spring doesn't work? Looking at the sizes and spec looks like it should be a go!

Anyway I'll be trying one of the ones from fastenal Monday when it gets here!

The ID of the Fastenal spring is about 0.76". When you pull the assembly apart you can see the spring fits around a collar on the aluminum piece near the lower pin and around a sheet metal hat thing on the other end. The diameters of both the "hat" and the "collar" are around 0.83" so the spring should have a minimum ID of 0.84" to guarantee a good fit. You might be able to force the Fastenal spring to fit but probably not without tweaking it somehow. Sorry if my earlier post caused you to buy a useless spring, I jumped the gun a bit on that one...

LMBmikeZ · 08-13-2011, 07:00 PM

No worries it's np! My buddy who works there hooks it up with huge discounts!

These are the specs he gave me though for the #71 spring

OD - 1"
Wire size -.12"
Length - 2.5"
lbs capacity - 47lbs

Looks like it should work the ID would still be left at .88" but we will see if it fits on Monday!

N8GTOL · 08-14-2011, 02:14 PM

You need to subtract the wire size twice from the OD to get the ID. Your ID would then measure .76" which agrees with the numbers blue posted.

KingZee · 08-18-2011, 07:26 PM

I switched my spring to the Century Spring part # so I have esfourteen's spring. PM me if you're interested.

smickey · 08-18-2011, 10:03 PM

Quote:

Originally Posted by KingZee

I switched my spring to the Century Spring part # so I have esfourteen's spring. PM me if you're interested.

Which spring do you like better?

KingZee · 08-19-2011, 02:13 AM

Quote:

Originally Posted by smickey

Which spring do you like better?

Honestly, the century spring one because it's almost like there's no spring except there's no play at the top of the pedal. That's what I originally wanted but esfourteen's spring is still waaaay better than OEM feel.

V8Killer · 08-19-2011, 09:17 AM

Esfourteen. Any word on those last 2 springs you got? I'll be home in a few weeks so I would like all modifications to my car to be finished so I can enjoy her while I am home before going back out.

2011 Nismo#91 · 08-19-2011, 10:47 AM

Count me in too.

08-13-2011, 12:59 PM	#7 (permalink)
LMBmikeZ A True Z Fanatic Join Date: May 2010 Location: Ontario, Canada Posts: 12,237 Drives: 40th Rep Power: 10352	Are u sure that the fastenal spring doesn't work? Looking at the sizes and spec looks like it should be a go! Anyway I'll be trying one of the ones from fastenal Monday when it gets here! __________________ CUSTOM NISMO \| BERK \| H&R \| STANCE \| SPL everything \| EVO-R \| 34 Setrab \| WHITELINE \| Redline \| Carkitcompany \| Zspeed \| UpRev \| SEIBON

08-13-2011, 07:00 PM	#9 (permalink)
LMBmikeZ A True Z Fanatic Join Date: May 2010 Location: Ontario, Canada Posts: 12,237 Drives: 40th Rep Power: 10352	No worries it's np! My buddy who works there hooks it up with huge discounts! These are the specs he gave me though for the #71 spring OD - 1" Wire size -.12" Length - 2.5" lbs capacity - 47lbs Looks like it should work the ID would still be left at .88" but we will see if it fits on Monday! __________________ CUSTOM NISMO \| BERK \| H&R \| STANCE \| SPL everything \| EVO-R \| 34 Setrab \| WHITELINE \| Redline \| Carkitcompany \| Zspeed \| UpRev \| SEIBON

08-18-2011, 07:26 PM	#11 (permalink)
KingZee A True Z Fanatic Join Date: Feb 2010 Location: Glendale, CA Age: 42 Posts: 2,612 Drives: Focus ST Rep Power: 425	I switched my spring to the Century Spring part # so I have esfourteen's spring. PM me if you're interested. __________________ Focus ST

08-19-2011, 09:17 AM	#14 (permalink)
V8Killer A True Z Fanatic Join Date: Feb 2011 Location: Newport, NC Posts: 1,127 Drives: It Hard Till It Pops Rep Power: 18	Esfourteen. Any word on those last 2 springs you got? I'll be home in a few weeks so I would like all modifications to my car to be finished so I can enjoy her while I am home before going back out. __________________ "Punch" Too much to list and a baby shot of nitrous....

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02-22-2012, 06:01 PM	#6 (permalink)
bushman66 Base Member Join Date: May 2010 Location: AZ Posts: 112 Drives: 2012 370Z Red Sp Pkg Rep Power: 17	Just installed the Century Spring and this is without a doubt, the best thing I have done to the car thus far! The clutch now reminds me a lot of the clutch I had in my 66 327 Corvette and 66 GT-350, with maybe a little less effort. I had NEVER stalled a manual transmission car until I got the Z. Now, I will not stall it again... The increase in pedal effort is negligible, but the disengagement of the clutch is sooo much easier and smoother now. Good trade off IMO. On another note, I purchased 4 springs, so I may have 2 (or 3) that I will send to someone who needs one for $15+shipping. Shoot me a PM [QUOTE=bluenoser;1257678]Ok there's good news and bad news. The Fastenal spring I mentioned earlier doesn't work. The inside diameter of the spring doesn't fit correctly over the assembly. I ordered the day after I measured it and I guess I wasn't paying close enough attention when I placed the order. The good news is that I found another spring after I realized the error that definitely does work. P/N 72577 at Century Spring is the winner 72577 - COMPRESSION SPRING - Part Characteristics \| Century Spring Corp. The spring rate is roughly 20% of the stock spring and it feels very similar to running without the spring installed. The bad news is that you need to order 4 of them to meet their minimum order quantity.

08-14-2011, 02:14 PM	#10 (permalink)
N8GTOL Base Member Join Date: May 2010 Location: San Diego Posts: 228 Drives: and flies Rep Power: 24	You need to subtract the wire size twice from the OD to get the ID. Your ID would then measure .76" which agrees with the numbers blue posted.

08-19-2011, 10:47 AM	#15 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,413 Drives: slowly Rep Power: 40571	Count me in too.

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