another clutch not engaging

[Biggo]

Ive offically got the shits again. Especially cos of a stupid clutch issue.

the problem:

clutch is not engaging when motors running. Basically you select a gear then start the car and away you go, WITH THE CLUTCH IN!

so far ive done:

bled and rebled the slave
made 3 different length slave push rods
check master, seems fine
adjusted master to a mm of its life
managed to get the pick up point in the first 10% of travel
adjusted the clutch fork pivot
spaced gbox mount down

The car is a ae71 gze with w57 and azcustoms adaptor plate. Brand new HD clutch, refaced flywheel etc etc.

Bit of history, when i first put the box in i must have got something wrong as the car wouldnt crank. either i missed the spigot bearing or the starter binded. Now it starts fine, neutral works perfect but F**K me im stumped.

Any ideas? i was booked for an exhaust yesty but it didnt happen

[oldcorollas]

can you see in the bellhousing, when someone else pushes the clutch, to see if the thrust bearing is actually pushing the pressure plate fingers in?

is the slave the correct diameter for the master? (ie, ratio of movement)
has this combination worked for other people?

[Biggo]

ive had a gander inside the bellhousing, it seems to work but theres only one of me and a beer fridge.

standard master/slave so i dont see that being and issue considering its a t50 bellhousing/fork setup.

there are a few people who have had success using these kits, josh young for one, ive got a few contacts on msn who have used them but theyre of no help on this topic.

[oldcorollas]

missed spigot bearing?

if the spigot bearing is rooted, it could easily be turning the input shaft.....
same if the adaptor is crap and the input shaft is on an angle, so the friction plate is at angle to the pressur eplate...

so... if you drive along, and put foot on clutch with throttle, can you get it to slip (not that this is exactly a safe test but )

[Biggo]

id rule out the fooked spigot, but the input shaft at an angle is a valid point.

if drove along an clutch in, boot it and it slips, what am i proving? that is still doesnt work?

[oldcorollas]

nah, that it works a little bit ie, you can disengage a bit..
doesn7t really help diagnose tho..

mayb you can get beer fridge/passer by to check the clutch when you push foot on the pedal?

[Biggo]

well i can state that is does work a bit, ie start with the pedal in and let it out = stall.

well im counting on a few mates over for shits and giggles tonight, i might have to enforce someone to give it a few good kicks. Otherwise its gbox out time again

[off-road]

Can you see if the thrust bearing is still attached to the fork?

[Biggo]

lol yair it is

is there anything else i should try before i get a workout pulling it apart again>?

[airfireman1]

Have you made sure the clutch plate is facing the right way, they have a flywheel side and a pressure plate side if notfitted correctly it will bind onto the flywheel due to lack of clearance
Cheers Dave

[The Real Roadrunner]

is the total hight of the flywheel and pressure plate the same as stock? if its not you may have to space the fork pivot out to get it to work.

have you checked if the fork is in good nick? i went thru 3 factory pressed steel forks as they kept cracking where the pivot sits and it wouldn't push the diaphram in enough to release the clutch.

airfireman1 has a good point also.

try what OC said also, ie take it for a drive then put your foot on the clutch in 4th and push the throttle wide open, if it slips it means you have a partial disengagement then you only need to figure out why it doesn't have total disengagement.

is the clutch disc too thick for the PP clamp hight? as ive seen this b4 also.

if it was a kit then you shouldn't have any troubles but sometimes they require abit of thought whilst fitting.

cheers
linden

[Biggo]

where to start,

yes theres partial engagement, but for the life of me i cant figure out whats wrong. Fairly sure the plates the right way also, clutch wasnt part of a kit, its exedy all round but with some funky HD PP, early landcruiser CP and a good old 200mm 4a fly.

im halfway thru getting the box off (and a carton)

is there anything in particular that i should look out for, there has been no noises eminating yet so i can only assume its still salvageable.

[oldcorollas]

ahh... i would suggest borrowing a stock new clutch kit from someone, and measuring the heights and thicknesses of stuff.... as a starting point...

[The Real Roadrunner]

with the box of try just setting everything up with just the bellhousing on there, ie remove the adapter and gearbox.

you should be able to move the CP with your hand if the clutch is DISENGAGING.

cheers
linden

[allencr]

Doesn't disengage - pushing on the clutch pedal and disconnecting the engine power from the transmission. Yours is permanently engaged.

It's a bent disk and/or bad pressure plate, if the pedal pressure seems firm/normal in operation.
The pressure plate face should be down 1/2 the thickness of the disk.
Don't bother bleeding anything when you can't feel it squishing air, because there isn't any.