Clutch Issues 25Det G-Box

[r338u4t]

Hey guys just finished putting my manual 25det box into my auto r33 s2 2door skyline and have hit a snag i have put the new clutch pressure plate and cover on and new release or throw out bearing (wateva you guys like to call it) once i have the gear box on the engine and bolted up, the clutch fork is jammed and wont move i noticed this when i bled the lines and the pedal was hitting the floor, I checked the lines again no air in them, then i got under the car and tried to move the fork by hand and couldnt it is solid i can move the fork towards the slave cylinder but the fork will not move forward to push to bearing onto the clutch, frustrated (obviously) i took the gearbox back off to check the following: 1.)pivot ball and clutch fork alignment which was fine pivot is not broken and the clip holding the fork to the pivot is in position and not broken. 2.)the clip holding the bearing collar the fork also in place not broken and working fine when the gearbox is off the car...... thats whats really bugging me with the gearbox off the car the the fork can move full travel up and down the shaft like it should everything in place and looks good. The moment the gearbox is flush to the motor and bolted up the fork will not move i have taken the box off a few times now to double check the fork and bearing assembly and im running out of hair to pull out any idea on what could be causing this issue? could i have been given the wrong clutch cover/bearing/pressure plate? its an oem exedy kit so its all meant to go together the cover has nine bolts like it should i double check the pressure plate is facing the right way and have come to the end of my tether any help or advice is greatly appreciated plz plz plz help me I wana drive my car soooo bad thanks...

[Dobz]

So once installed on the motor, the bearing carrier won't slide backwards and forwards even a little bit?

[r338u4t]

after i wrote the first post i went and had a look at the box again and i had a look in through the hole where the fork is, it does move a lil bit backwards but to get the bearing to come off the clutch the slave cylinder has to be off and so does the rubber boot that goes around the clutch fork otherwise its just on the clutch the whole time and with the slave and boot on there still a little movement in but only in the direction to pull the bearing off the clutch it seems to be in contact with the clutch the whole time

[Dobz]

If the carrier can slide up and back even a little bit that means it's not jammed. I'm thinking it's a hydraulic problem because you say you bled it but the pedal still goes to the floor.If there was a jam and the system was bled properly then the pedal would be solid and wouldn't push in.

Just a thought, go and check your clutch pedal adjustment and see where its at. It might be screwed in too much and need adjusting out.

Out of intrest, how did you bleed the clutch?

[r338u4t]

ok will check the pedal adjustment and i bled the clutch with a vacuum bleeder that i hook up to my compressor umm and yeh the fork did move a lil bit and with the boot off the fork i could see the bearing moving up a down will double check again cheers for helping out dude will check back soon thanks again

[Stevoss]

Make sure you don't have the clutch plate the wrong way round, if so it won't disengage.

[r338u4t]

Clucth plates is right way around it specifies transmission and flywheel side engraved on each side of it i think dobs is right i justneed to adjust the pedal as it was all the in will check back soon once again thank u all for your awesome advice and help any one with info or diagrams on how to wire neutral and reverse lights would help also i have wired the park sensor to a switch so i have sorted that and my speedo plugs fits the manual any helpon this matter also appreciated im so glad i signed up to this site everyone is so awesome and knowledgeable and willing to help thank u all cheers

[joe2548]

bearing is correct way round? they look kinda backwards, I dunno if thatd change anything tho..

[Simon-S14]

You won't be able to move the clutch fork gg hand once its bolted up as it takes a large amount if force to push the Carrier onto the pressure plate.

You have a hydraulic fault..most likely the clutch damper

[joe2548]

You won't be able to move the clutch fork gg hand once its bolted up as it takes a large amount if force to push the Carrier onto the pressure plate.

You have a hydraulic fault..most likely the clutch damper

i agree

[joe2548]

master cylinder and slave cylinder working? if the clutch pedal goes to the floor one either might be stuffed or leak in hydraulic line...

[r338u4t]

will check all of the above have reinstalled all of the gear and ready for bleeding unfortunately i no longer have a vacuum bleeder any hints/tips on bleeding the system i have three bleeding points slave,master, and a lil junction box inbetween the two which also has a nipple on it the slave and master are brand new items that i bought so shouldnt be buggered is there is anyway i couldve stuffed them? thanks again guys

[r338u4t]

oh and also if i my master and slave cyl are buggered is there any symptons other than the pedal smacking the floor that i should look for? cheers