Clutch Help

[sj9ers]

I have a 1969 mustang that I swapped a t5 with a roller 302 into, with a hydraulic clutch system. When I first installed the tranny I bled the hydraulic system and it seemed fine, and the transmission shifted into all gears fine when the motor was off. When I turned the car on the transmission wouldn't shift into any gears at all. So I suspected the clutch was bad since it was used and bought a clutch kit with the pressure plate, clutch, and throwout bearing and installed it. When I tried it again it did the same thing as the first time and would shift fine when the car was off, but wouldn't shift into gear when the motor was on. However when the car was on and I pushed and held the shifter in 1st the rear wheels would spin as I had the rear on jack stands, if i let go of the shifter it would just fall back into neutral. Does anybody know what the problem could be? The throwout bearing is engaging the clutch fingers because I had my dad push in the clutch while I watched the fork from underneath, so I really don't know what else could be wrong.
Thanks

 

[2+2GT]

Sounds like the clutch is not fully disengaging. When you "hold" the shifter in place, it's probably just pushing the synchro against the gear, not really engaging the gear.

 

[jcode68]

Agreed. You need to bleed the hydraulic clutch more to get full travel from the clutch fork. This is pretty common issue with hydraulic clutches where you initially bleed it, see it traveling and think you are done, but you are not! You need to be getting somewhere near 3/4" of travel. What brand of hydraulic clutch are you using?

 

[sj9ers]

i'm using a cnc slave and master cylinder.

 

[jcode68]

So basically the same used in the popular and no longer available JMC kits. Do a search on this forum for JMC and you will find a bunch of threads where people (myself included) had a tough time getting them to bleed and engage properly. The good news is it can be done and in the future if i had to do it again, it would be much easier now that I am more familiar with the procedure. Also, once you have it bled properly, you shouldn't need to touch it again (mine has been set adn fine for ~2 years now).

 

[Glen's 1965 5.0]

The SC are a pain to bleed. I took mine off to hold the bleeder valve up to get it done. Once you have it done you will not be able to push the pushrod in by hand.