Clutch Issue, Works Then Doesnt

[Gerg_R31]

the parts;

r31 with rb26/30de

gearbox is out of a series 1 r31

5.5kg chrome molly flywheel

has a extreme heavy duty cushion button

clutch/ motor maybe done about 1200-1500kms

the story;

Monday;

went to leave work noticed puddle of brake fluid under car, the clutch slave cylinder boot had leaked.

bought new slave cylinder, fitted, bled (with hose from nipple into another bottle of break fluid)

drove it around was ok, turned it off packed up tools went to leave work and wouldnt go into gear.

bled the clutch again.

no change.

adjusted pedal removed all play (next to no thread left towards pedal side)

if i started it in gear it would shutter then launch

if i started it in gear with clutch in it would squeel as it was kicking over

bled it again was a bit better

a couple minutes after leaving work, it got difficult to change or put into gear. then started to really drop in revs and making the car dive with clutch in

by time i got home i was pretty much smashing the gears, stalling at lights

Wednesday

Replaced the master cylinder with the r32 master cylinder

bled it from master and slave

so far

starts then it might go into gear eventually, might work easily might not

starting in first gear hand brake down clutch in, it has creeped forward but not everytime

starting in reverse doesnt move

i'm thinking damaged spigot bush

[Dobz]

A stuffed spigot bush wouldn't do that. Try pumping the clutch all the way to the floor three or four times in quick succession before changing gear and see if this helps.

[Gerg_R31]

nup no different

[SargeRX8]

Bent fork not pulling the clutch all the way? Heavy duty, esp extreme heavy duty, put alot of load on the pedal and fork.

[Dobz]

Bent fork not pulling the clutch all the way? Heavy duty, esp extreme heavy duty, put alot of load on the pedal and fork.

^^It's a possibility.

Did the clutch work fine when you found it leaking before you changed the slave cylinder?

Give it another bleed just for good measure and see if it improves.

[Gerg_R31]

^^It's a possibility.

Did the clutch work fine when you found it leaking before you changed the slave cylinder?

Give it another bleed just for good measure and see if it improves.

it was working fine then the 2 days before hand it was getting hard to put it in gear

[Gerg_R31]

bled it again, tried adjusting the travel in the pedal, its got 12-14mm of travel

now it;

goes into reverse everytime no issue

struggles to go into first on some start ups

goes into 1st 2nd 4th and 5th without dramas after a drive, but crunches/ clunks into 3rd

when coasting along if i put clutch in then back out it "shutters" around the clutch point

[turboedsloth]

Do you still have the solid line in it with the rubber section at the bottom? If you pull the fork boot off the bellhousing can you see any damage inside? I think your pivot point has broken

[Gerg_R31]

metal line bracket to chasie, then rubber line to slave

will check pivet point.... i hope its not something simple like the spring falling off there

Edited January 28, 2011 by Gerg_R31

[Gerg_R31]

couldn't see anything with the clutch for boot off, ill take it into a gearbox specialist tomorrow

[Gerg_R31]

clutch fork spring near the thrust bearing housing had fallen off and the fork and slid out, grr always something simple

[Gerg_R31]

update

was going ok got about a dozen gear changes then... it got stuck in 3rd.

Turned it off, still stuck in 3rd, got it out of gear eventully.

Now cant find any "slot" or gear other then 1st 5th and reverse

it eventually went into 1st with engine off, turned the key without the clutch in, it jumped forward, i kicked the accelerator and it moved without the clutch

with a bit of effort i did a 3 point turn, got back to the mechanic using only 1st gear

he thinks either the springs have broken in the clutch plate or the gear box isn't strong enough for the motor

[Dobz]

update

was going ok got about a dozen gear changes then... it got stuck in 3rd.

Turned it off, still stuck in 3rd, got it out of gear eventully.

Now cant find any "slot" or gear other then 1st 5th and reverse

it eventually went into 1st with engine off, turned the key without the clutch in, it jumped forward, i kicked the accelerator and it moved without the clutch

with a bit of effort i did a 3 point turn, got back to the mechanic using only 1st gear

he thinks either the springs have broken in the clutch plate or the gear box isn't strong enough for the motor

He's talking shit when he says the gearbox might not be strong enough for the motor when referring to your problem. The fact that you jump forward when you try and start the car with the clutch in cleary shows that it's a clutch related problem.

Ask to see the clutch plate and pressure plate if he pulls them out.

Edited February 3, 2011 by Dobz

[Gerg_R31]

he works a couple doors down from my shop, he always shows old parts even fluids.

he is more possitive something broke on the clutch plate

but thinks it might be the gear box cause its not selecting 2nd 3rd or 4th at any time, and 1st 5th and reverse are time consuming to force in

we'll see eventually

[Gerg_R31]

ok found the problem

broke 5 fingers off the pressure plate, reason possibly cracked couple fingers when the spring came off the clutch fork

[snozzle]

ah.. some more pictorial evidence for the "this is why we dont buy xtreme clutches" folder

thanks!

[Dobz]

Holy hat!! That looks like some crap quaility spring steel for it to just snap off like that.