Ok so I have a 73 f250 that I did a 12v cummins swap to. It has the getrag 5 speed in it but setting up the hydraulic clutch has proved to be a nightmare

Alright so I have the hydraulic line ran, slave and master installed. The slave and line is the original dodge line the slave (just replaced) is dodge. I used a 95 f250 master cylinder (also new) because it was bolt in and didnt want to deal with the dodge master because it was a twist in style and the bracket for the dodge is part of the clutch/brake pedal bracket and I cant find one to cut apart. So I figured (which may be the problem) It should work because the bore on both masters is 7/8 but when I installed everything and bled the air out the pedal goes solid barely budges and the slave moves maybe a 1/4 inch, but it works when i unbolt it and have someone push the clutch. I checked the clutch on the tranny to make sure it wasnt frozen up and it works when I actuate it by hand/prybar.

so do you think there maybe something different between the master cylinders? or can anyone point out where im going wrong? Ive looked around everywhere and asked alot of people but nobody has been able to help. Anything would be appreciated

Thanks!

 

If I understand your post correctly, the only thing I can think of is that the Dodge clutch pedal had much more leverage (shorter distance between the pedal pivot and the pushrod pivot).

 

Well I cant seem to figure it out and seem to have everyone stumped. So I bit the bullet and im buying a complete sealed Dodge Master cylinder, Line, and slave cylinder from the dealership. I talked to one of the guys there and he said that this hydraulic system is real finicky and is hard to get right when pieces are replaced. (And it just so happens they have 5 in stock for a reason) Im just going to have to build a bracket or find a truck I can cut one out of at a wrecking yard. Hopefully this will solve problems. I guess this is what I get for trying to make things easy

 

Ok well the dodge factory hydraulic setup did not help at all so now im $300+ dollars out and no fix. I pulled the trans now to check and see if maybe the clutch plate was rusted to the flywheel but nope still nothing. The clutch isnt in the best shape but not terrible, Im lost at this point almost seems like the leverage is wrong on the clutch fork itself...

 

Well, because the Dodge and Ford master cyls are the same bore, fitting a Dodge master cyl was never going to help, unless the new slave cyl was a bigger bore.
One thing might be to fit a smaller bore master cyl, although the problem there is that it would shift less fluid.
maybe check that the throwout bearing carrier is not binding up. Also possible that the pressure plate is bad.
As for the throwout lever, you can`t really move the pivot so it would mean lengthening the lever and so repositioning the slave cyl.

 

new clutch won't release, what could it be?