clutch mods

[WillH]

After the commute to and from work I'm hooked on the McMaster Carr spring.

[Gelbster]

Originally Posted by CraigM

Honestly, I just went with the one the guys at rennlist found. Looks like they did a lot of digging, I just did the ol' copy and paste. 3 1/2 inches instead of 4 if I remember right - you'd never know driving it.
PM your address if you want it, and no worries if you want to take some time and try to find a different one. I think that thread (linked somewhere in this one) had a few other options, but those that tried a few of them preferred this one.

if you could provide a part number and source this would be very useful.

[WillH]

McMaster Carr spring part number 9657k142

[Gelbster]

Originally Posted by WillH

McMaster Carr spring part number 9657k142

But you got that from a dubious source(me)?
"Based on the info above :-
The stock spring is 75lbs/inch and about 4" long
The McMaster Carr spring # 9657k142 is 39lbs/inch but only 3-1/2" long.
The deficiency in length is a problem?
If so, check McMaster Carr #9657K136.
This is slightly larger diameter(1.25" vs 1")
It is 57 lbs vs 39 (or 75lbs.for OEM)
Fully compressed it is longer than the short spring 2.81" vs 2.31" Is that 1/2" a problem?
You can buy just one spring in # 9657k136
or this?
http://www.ebay.com/itm/131476133178?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
15 16" O D x 4" x 0 148 Compression Springs Pack of 2 | eBay

[WillH]

It's the spring mentioned in the rennlist thread. They come from McMaster Carr as a bag of 6. It fits and it works, but I doubt I'm the only one who has tried it here so I'm sure someone else will weigh in.

I can't see how the longer compressed length can be a problem as the locking hole is visible with either spring in the compressed state. Wider might be a problem getting it into the canister. I didn't measure the canister while it was out.

[notech]

I've read the whole thread but still dubious on what is being felt with the mod?
Is the clutch pedal going to be lighter to press in? or depresing faster?

[WillH]

Heavier pedal, less spring assistance. Better feel, easier modulation.

I found the original spring made for a very light pedal, (numb feeling), and I had a harder time finding the biting point than I should have.

[notech]

Originally Posted by WillH

Heavier pedal, less spring assistance. Better feel, easier modulation.

I found the original spring made for a very light pedal, (numb feeling), and I had a harder time finding the biting point than I should have.

Nice! I am in then!
CraigM, would you send one to me?

[Stroked & Blown]

Just pulled the spring & I like the feel, though there is some play when the pedal is fully released.
Ordered a 6-pack of McMaster springs & will report back on my experience.

[WhiteyII]

Got all psyched to pull the clutch spring assist from my semi new to me 98, stretched a bit and under the steering wheel I went. removed the vent to make things easier to
see................. that my spring assist is already removed. Some have complained about how hard the clutch is to push without it, I guess when one doesn't know the difference...... sure feels light to me

[Geof3]

Dang.... SO glad this thread was raised from the dead. I thought I was loosing my touch or the Box's clutch pressure plate was ****************e... Just haven't been able to dial the feel of this thing! I just ordered springs. Let's see how it goes!

[WillH]

Yanked the overcenter spring on my winter VW MK5 too, made an impressive improvement there. No more vague pedal. I can’t see the reasoning for the overcenter spring. These cars don’t have heavy clutches.

[Geof3]

Wow, a relatively simple thing can make such a difference! Installed the Mcmaster spring, took about 30min total, if that long. What a difference!

[Ben006]

The clutch power spring is a very good mod, especially on 2.5 and 2.7L which have a weird feeling from stock.
https://www.youtube.com/watch?v=YfjD4a_m900

[edc]

I wonder whether you US people have a different spec springs or set up. Not many people complain about this over here. Indeed, the most common 'mod' is to replace a broken spring and most report a better clutch operation. Manual cars are the norm here and I don't notice anything particularly peculiar with the clutch in either of the Boxsters I've had compared to the dozens of other cars I've driven.