Hard clutch pedal

[crumble]

I've got a vehicle with a tremec 5 speed and virtually a new mccloud clutch. Problem is the clutch pedal is extremely hard to push down. Any suggestions guys?

[mygasser]

is it linkage/cable or hydraulic john? if the former is it all nice and free/lubricated? if the latter do you know the bore sizes of the master and slave cylinders? also and this applies to either, what is the pedal ratio?
neil.
ps if hydraulic and you can't alter the pedal you could always fit a remote servo like you do with brakes. that'll lighten it up.

[crumble]

It's hydraulic neil. The set up as been fitted about 15 years. But after a new clutch was fitted the pedal seemed harder than previous.

[mygasser]

it sounds like the pressure plate has more spring pressure then. you have 2 choices, replace the clutch or as i said fit a servo. it's a toss up which is more work and money between the 2 unfortunately.
neil.

[tom.marg]

Definitely could be a tougher spring pressure in the plate, if was working fine before it does suggest it’s only the new clutch parts that made the issue come about

[mygasser]

is there access to the clutch at all from the bottom like a th350/400? if so i'd (and don't shoot me down) remove one bolt at a time and refit with a washer as a spacer between flywheel and pressure plate. that'll reduce the spring pressure slightly to at least prove if that's the problem. i know, i know, i'm a dodgy fuc*er but at least you'd know what you had to do for a 'proper' fix, lol.
neil.

[Acker]

is there access to the clutch at all from the bottom like a th350/400? if so i'd (and don't shoot me down) remove one bolt at a time and refit with a washer as a spacer between flywheel and pressure plate. that'll reduce the spring pressure slightly to at least prove if that's the problem. i know, i know, i'm a dodgy fuc*er but at least you'd know what you had to do for a 'proper' fix, lol.
neil.

This comment makes me feel young again. Top marks I say. [emoji106]🤪[emoji23]


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[rem]

Could the disk be in back-to-front?

[crumble]

I haven't picked the vehicle up yet. Just trying to get some ideas what it might be.

[chevy2]

The next size smaller in bore size of master cylinder will create a ?longer? clutch,
ie it?ll bite nearer to the floor but it?ll give you a softer clutch.

[tom.marg]

Could the disk be in back-to-front?

this can happen, but usually on a petrol clutch they only go in one way, as one side is deeper and will clearly interfere with the flywheel.
Diesel clutches however mainly with dual mass flywheels can be put in back wards, usually makes for a vague and low pedal. Seen that before!

[crumble]

I got it home and put it on the ramp
I changed the pedal ratio and could not move the pedal 1mm solid. So I put the linkage back to where it was. I then adjusted the piston that goes in the master cylinder. I also managed to lengthen the linkage rod from the pedal to master cylinder. I now still have a hard pedal but I can now select gears now. Just wondering if a change of master cylinder will push more fluid and give more clutch.

[mygasser]

if you use a bigger master the pedal will be harder than it is now. it sounds like you may have changed the pedal ratio the wrong way if it was harder still. you either need to make the pedal pad to pivot longer or the pivot to cylinder clevis shorter. either will lessen pedal effort but with increased pedal throw.
neil.

[kapri]

Most clutch covers are now uprated springing as non asbestos disc needs more clamping pressure to prevent slippage.