944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Lighten clutch pedal feel?

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v2rocket
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Lighten clutch pedal feel? Empty Lighten clutch pedal feel?

Post  docwyte Wed Oct 05, 2011 9:31 am

Is there anyway to lighten up the clutch pedal feel? Mine is pretty heavy, Spec stage 2 clutch and lightweight flywheel.

It's not an issue on the track, but very noticeable in street driving...

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Post  Admin Wed Oct 05, 2011 9:48 am

I removed the assist spring on your setup when I built it. You could put one back in and see if that makes it feel different.

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Post  docwyte Wed Oct 05, 2011 9:57 am

Got one laying around I could have/buy? Easy to re install?

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Post  a951 Wed Oct 05, 2011 2:00 pm

its a 5 min job max, to reinstall it, very easy.

everyone with a conversion should have it spare

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Post  acorad Wed Oct 05, 2011 3:31 pm

I also have a stage 2 spec clutch that's a bit of a beast in daily driving and that I'd love to know if it has that assist spring - where is the assist spring supposed to be, is it visbile from underneath?
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Post  docwyte Wed Oct 05, 2011 3:37 pm

To think that the Spec guy was trying to sell me a stage 4 clutch! He kept telling me how it'd hold 700 ft lbs of torque and ignoring me when I told him I would be making nowhere near that...

Does the assist spring help push the clutch pedal down, or only help it pop up? Cause it has no problem popping up on its own, that's for sure!

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Post  a951 Wed Oct 05, 2011 3:39 pm

down, mine goes down with it, without pushing the pedal.. Surprised

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Post  docwyte Wed Oct 05, 2011 3:45 pm

Anybody have one of these so I can try installing it?

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Post  docwyte Thu Oct 06, 2011 3:15 pm

Anyone? Bueller? Bueller?

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Post  944-LT1 Thu Oct 06, 2011 3:46 pm

Ebay... Type in "porsche 944 clutch pedal." Theres one thats $10.

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Post  Admin Thu Oct 06, 2011 5:45 pm

I probably have the pieces laying around that you can have, but , We/I am moving this week to a larger , nicer shop. I have everything in shambles at the moment.

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Post  docwyte Thu Oct 06, 2011 5:47 pm

No rush, when you get a chance to lay your hands on them I'd appreciate getting them. Thanks!

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Post  marc a Sat Oct 08, 2011 1:27 am

Doc,

FWIW, I have a dim recollection of having to remove the spring after the conversion because the pedal would go down fine, but would not return.

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Post  spence Sat Oct 08, 2011 5:30 am

If you loosen the spring enough, the pedal will not stick to the floor... I had the same problem and I though I had air in the hydraulic bearing. It was just that damn spring. I loosened it a little and it fixed the problem.
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Post  87-944S Sat Oct 08, 2011 11:45 am

Do you have the little return spring on? Those buggers ae under a lot of tension! I had to have that on my brake pedal and clutch pedal. Brakes lights will stay on without it on mine.
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Post  spence Sat Oct 08, 2011 12:02 pm

Is that the spring on the brake pedal? Ya, I kept that one. I remember how fun it was trying to get it back on.
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Post  87-944S Sat Oct 08, 2011 5:38 pm

There's one on the clutch too.
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Lighten clutch pedal feel? Empty Clutch pedal

Post  fliermike45 Sat Oct 08, 2011 6:21 pm

Remember to adjust the clutch master cylinder pushrod if you have used a firewall stifening plate. My pedal (minus spring) had too much free play until I lengthened the push rod. It is now level with the brake pedal at rest.

Sloan's book advises to remove the spring, what are the advantages or disadvantages?

I have installed a HTOB and have not driven the car yet, but it feels fairly heavy to operate the stock LS1 clutch. My MGB V6 has an HTOB and I soon got used to the heavier clutch pedal.

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Post  944-LT1 Sat Oct 08, 2011 6:39 pm

fliermike45 wrote:
Sloan's book advises to remove the spring, what are the advantages or disadvantages?

My best guess is that at the time of putting the manual together, he was under the impression that the spring pulled the pedal back to rest position. Im not too sure why they are being removed.

The spring acts as a booster. With the wilwood clutch master, the increase in volume makes for a increase in pedal effort. So, the spring helps with this.

If you find that the stock spring is less than helpful, you can increase the assist by installing a larger spring. You can find these springs at mcmastercarr at varying spring rates.

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Post  fliermike45 Sat Oct 08, 2011 6:45 pm

Glad I kept my spring, will put it back and see what happens.

Thanks

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Post  fliermike45 Sun Oct 09, 2011 3:29 pm

Put my clutch assist spring back today.......tip, compress it in a vice and use two or three heavy duty tie wraps around the coils to hold it compressed. Impossibe to compress in place, I have the tool rash! Easy access with the relay/fuse panel removed.

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Post  acorad Sun Oct 09, 2011 4:47 pm

Hey guys, can someone take a pic of the spring in place?
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Lighten clutch pedal feel? Empty Spring picture

Post  fliermike45 Sun Oct 09, 2011 6:43 pm

Here is the spring installation viewed from the top after moving the relay panel.

Items on the clutch pedal arm (from top of picture): Nylon bushing, shaft eye, washer, circlip. At the far end of the spring is a nylon cap with two ears that rides on indentations in the body.


I assume that one can adjust the pre-load on the spring by turning the nut.......can anyone give some feedback on adjusting the spring tension.
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Last edited by fliermike45 on Sun Oct 09, 2011 6:46 pm; edited 2 times in total (Reason for editing : Added note on spring tension)

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Post  87-944S Sun Oct 09, 2011 7:08 pm

Here's the procedure form the Porsche manual

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Lighten clutch pedal feel? Empty Clutch spring

Post  fliermike45 Sun Oct 09, 2011 7:14 pm

Thanks for the info, the figures quoted are for stock 944 clutches, any suggested settings for a stock LS1 clutch and HTOB?

Sorry I can't experiment yet as I have no exhaust and the car is still up on axle stands.

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