Diaphram Clutch, What spring?

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TF360

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Installed a new clutch in my 360 4-speed. Found out my under dash, I believed it's called a over center spring, that connects to the clutch pedal does not work with Diaphram style clutch. What is the best spring setup for this situation?
 
Go to the hardware store and pick up a light to medium-duty spring of the proper length so it pulls the clutch pedal up to the stop position.
 
None. You don't need one at all with a diaphragm style clutch.
 
Your next question will be, "how the hell does this thing come off"

I cut mine off with a high speed mini grinder. You can do the insert steel washers in the spring trick but its a pain in the rear
 
It is a good idea to have a light spring on it. Without a spring the weight of the pedal will always sit on the linkage, and consequently the throw out bearing will always be in contact with the clutch fingers and spinning, causing an early failure of the throw out bearing. I used a modified jack hold down spring from the trunk. It worked great.

Same reason you should never ride the clutch or drive along with your foot resting on the pedal, and also why the original over centers....it pulls up at the top, and down at the bottom.
 
To combat that spinning R-bearing situation, I installed a spring on the fork,under the car, to pull it back and park it. It seemed easier to me .

And when it pulls down at the bottom, on a diaphragm thats bad, because the diaphragm barely has enough power to return itself at idle. But once the flyweights move out(around 3000plus rpm),Theres a real good chance the diaphragm cannot return it, and then the pedal stays on the floor.You better have a rev limiter.
 
AJ/FormS said:
To combat that spinning R-bearing situation, I installed a spring on the fork,under the car, to pull it back and park it. It seemed easier to me .

And when it pulls down at the bottom, on a diaphragm thats bad, because the diaphragm barely has enough power to return itself at idle. But once the flyweights move out(around 3000plus rpm),Theres a real good chance the diaphragm cannot return it, and then the pedal stays on the floor.You better have a rev limiter.
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Flyweights on a diaphragm pressure plate?
 
d55dave said:
It is a good idea to have a light spring on it. Without a spring the weight of the pedal will always sit on the linkage, and consequently the throw out bearing will always be in contact with the clutch fingers and spinning, causing an early failure of the throw out bearing. I used a modified jack hold down spring from the trunk. It worked great.

Same reason you should never ride the clutch or drive along with your foot resting on the pedal, and also why the original over centers....it pulls up at the top, and down at the bottom.
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There IS a light spring on it. There's a spring on the clutch adjuster that pulls the fork back, and that should be more than strong enough to keep the throwout bearing from being in contact with the diaphragm. It is on mine.
 
72bluNblu said:
There IS a light spring on it. There's a spring on the clutch adjuster that pulls the fork back, and that should be more than strong enough to keep the throwout bearing from being in contact with the diaphragm. It is on mine.
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Yep, the spring was standard from the factory even with the OC spring; it is called an 'anti-rattle' or 'fork return' spring. (BTW, the OC spring may not actually pull the pedal all the way up, as it's force can be fully released before the pedal is at its full up position.) And even with the pedal all the way up, the pushrod to the fork will still be loose, and the fork prongs and TO bearing are free to move forward. So the anti-rattle/fork return spring is there to pull the fork and TO bearing back, and helps insure that the pedal is fully up too.

The fork return spring is partially shown in the diagram halfway down this page. There should be a slot and small hole beside one end of the slot in the fork; you slip the rounded end of the spring through the slot and hook it into the hole; this was done for easy R&R. There will be a small hole in the bell housing and block area straight forward in which to hook the other end of the spring.

http://www.darkside.ca/node/31
 
As usual, you guys are correct. I completely forgot about that lower spring, and yes, it serves the purpose. It's been a couple years since I had a 4 gear car.
 
If I leave the original under dash spring. What problems will it cause? The pedal gets stuck on the floor, but will it cause any other issues?
 
The problem.is, with a diagram clutch (which requires much less pedal effort) the spring could pull the pedal down, or hold it down and keep the clutch disengaged.
 
I just installed one of these style clutch form McLeod. Have the same issue with the pedal sticking to the floor. Of course only does it when you go to slam the gears. Then look like a total fool. LOL. I have the lower spring and the over center spring. So If I read correctly above, remove the over center spring and this whole issue is gone???
 
Correct. You need to remove the over center spring when you install a diaphragm clutch for that exact reason.
 
Look around for the factory style spring, maybe try Brewers or Passon.
 
Ok thanks. My dad was researching and was finding contradicting info. So say remove while others say it stays. For now I just put a small spacer under the carpet. working great so far. Its all about adapting sometimes right. LOL.
 
breakstuff said:
Look around for the factory style spring, maybe try Brewers or Passon.
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He has the factory spring, just not the factory clutch. Diaphragm clutches don't need an over center spring.

4geardemon said:
Ok thanks. My dad was researching and was finding contradicting info. So say remove while others say it stays. For now I just put a small spacer under the carpet. working great so far. Its all about adapting sometimes right. LOL.
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Just remove it, problem solved. I have a McCleod clutch in my duster, no over center spring. No problems. All you need is the small spring on the clutch fork.
 
Yes, I have the small spring on the clutch fork. Anyone know if any damage will occur if I leave the over center spring for a little while and just make sure I pull the clutch up with my foot. Just want to drive down the street a few times carefully before I remove the oc spring.
 
TF360 said:
Yes, I have the small spring on the clutch fork. Anyone know if any damage will occur if I leave the over center spring for a little while and just make sure I pull the clutch up with my foot. Just want to drive down the street a few times carefully before I remove the oc spring.
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diaphragm clutch, remove the spring. diaphragm clutch, remove the spring. diaphragm clutch, remove the spring.

If it really matters, you will possibly weaken the pressure plate diaphragm, burn the TO bearing, possibly overrev the engine.

diaphragm clutch, remove the spring. diaphragm clutch, remove the spring. diaphragm clutch, remove the spring.
 
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