clutch won't disengage

[Typhoon]

Check to ensure both master and slave cylinder are the correct parts. If the master is a smaller diameter or stroke, you won't get enough fluid movement for disengagement. Same with slave, if it's to large, not enough travel.
Also, re bleed by cracking the hose fitting at the master cylinder and pumping some fluid through, I find brand new clutch masters can be particularly difficult to get the last air bubbles out of for some reason, I think it's the relative lack of pressure and fluid volume moved.
Another move could be trying a simple gravity bleed. It often works when everything else fails.

 

[GrimJack]

What kind of flywheel? Was it new, or machined? Do you know if the backstep is correct? Too much backstep would make it never let go.

PS: There's some high quality advice in this thread.

 

[z8dmc]

The flywheel is stepped, flywheel, clutch and all other parts were working fine before i rebuilt the motor.
The flywheel is stock and has been machined about 3000 miles ago.
I did not bench bleed the master, so i will bleeding the master by opening the hose as Typhoon suggested.

The clutch fork is pulling the hub out far enough for the clutch to disengage. I will take some pics of it.

Thank you for all the high quality advice, I appreciate it a lot.

 

[z8dmc]

The master and cylinder are aisen from driftmotion and it seems like the clutch fork has more than enough travel.
I will get pictures tomorrow.

 

[supraguy@aol]

well?
I wanna see these pictures.

 

[Greyscorpion]

Any updates

 

[mecevans]

Did you adjust the master cylinder linkage?

You dont always have to bench bleed. A little trick for the clutch my dad taught me is to push the slave with a pry bar. This forces fluid up into the master cylinder through the compensation port. Just did it the other day.

 

[z8dmc]

I believe its an internal issue with my tranny. Nothing was wrong clutch wise, lines, pedal or anything else.
Im planning on rebuilding the r154.
Thanks everyone for the help.

 

[eraezer]

How can it be a tranny problem?

I'm having the same problem with a brand new SPEC stage 3 kit.
So the only difference is the clutch used and that my slave cylinder is not brand new, only rebuilt.

I installed the spec disc with my old stock pressure plat (PP) and that combination works fine. Can you test your setup with another PP?

 

[Quin]

Did it ever work after reassembly or did it work for a while and this is a new problem after driving it?

 

[z8dmc]

Thanks guys for all the responses. The problem occurred after my rebuild.
I will rebuild the transmission replacing seals synchros and bearings.
Hopefully this solves the problem.