Video of Throwout Action

Does this look reasonable? This is the TPC package with a SPEC stage 1 clutch with a SPEC steel (lightened) flywheel and a 7/8 clutch master cylinder.

With a friend depressing the clutch I reached in through the transmission inspection cover and rotated the drive shaft by hand. It spun freely in both directions and continued rotating under its own momentum, except for a small section of its rotation where it felt like the friction disc was dragging on either the pressure plate or flywheel, I needed hand effort to rotate it through that small portion.

We did both a power bleed and a two man pedal bleed until there were absolutely no bubbles coming out of the remote bleed line. Clutch pedal is solid, but with most of the action happening in the bottom portion of the clutch pedal travel. I did lengthen the clutch pedal clevis slightly, but I haven't had a buddy to work the pedal to see if this solved the catching issue yet.

thats lots of throw, possibly even too much. too much throw could result in over-centering the pressure plate. ideally a new clutch should grab in the bottom 1/4 to 1/3 of the clutch pedal travel. once the clutch seats in it will move up a little bit. as for the disc slightly catching, its not really an issue, there is likely a slightly thick spot on the disc and a slight uneven spot on the pressure plate. again, once it seats in it sorts itself out.

once the car is running and driving make adjustments from there. the 7/8 master cylinder may be a little larger than needed, most people end up with a 13/16 in our setups. if it travels too far you can shorten the pushrod and use less pedal travel, but the larger the master cylinder, the harder the clutch is to push

Thanks so much sharkey, really appreciate it! The grab point is definitely in the bottom 1/4 to 1/3 of the clutch pedal travel, so I think I'm on track. Me and another 944 guy were working on it yesterday, it was a weird feeling, you're sitting in a 944 and pushing a clutch pedal that now feels very different from a 944 clutch.

i have the stock porsche master and a tpc Stock fw pp and throwout and it only grabs at 1-2 inchs from the floor i have 3 gaz tanks on my setup

matty89 wrote:i have the stock porsche master and a tpc Stock fw pp and throwout and it only grabs at 1-2 inchs from the floor i have 3 gaz tanks on my setup

The larger aftermarket master cylinder will allow the clutch to engage higher up. Use the 13/16" since yours is engaging off the floor. I've had some that didn't release at all and had to use the 7/8" master.

Hotrodz of Dallas wrote:

matty89 wrote:i have the stock porsche master and a tpc Stock fw pp and throwout and it only grabs at 1-2 inchs from the floor i have 3 gaz tanks on my setup

The larger aftermarket master cylinder will allow the clutch to engage higher up. Use the 13/16" since yours is engaging off the floor. I've had some that didn't release at all and had to use the 7/8" master.

any model to recommend for bolt on?

matty89 wrote:

Hotrodz of Dallas wrote:

matty89 wrote:i have the stock porsche master and a tpc Stock fw pp and throwout and it only grabs at 1-2 inchs from the floor i have 3 gaz tanks on my setup

The larger aftermarket master cylinder will allow the clutch to engage higher up. Use the 13/16" since yours is engaging off the floor. I've had some that didn't release at all and had to use the 7/8" master.

any model to recommend for bolt on?  

I get them from Kent at TPC. He has them made to his specs.

Hotrodz of Dallas wrote:

matty89 wrote:

Hotrodz of Dallas wrote:

matty89 wrote:i have the stock porsche master and a tpc Stock fw pp and throwout and it only grabs at 1-2 inchs from the floor i have 3 gaz tanks on my setup

The larger aftermarket master cylinder will allow the clutch to engage higher up. Use the 13/16" since yours is engaging off the floor. I've had some that didn't release at all and had to use the 7/8" master.

any model to recommend for bolt on?  

I get them from Kent at TPC. He has them made to his specs.

That's where mine (in the video) came from as well.

chrenan wrote:

Hotrodz of Dallas wrote:

matty89 wrote:

Hotrodz of Dallas wrote:

matty89 wrote:i have the stock porsche master and a tpc Stock fw pp and throwout and it only grabs at 1-2 inchs from the floor i have 3 gaz tanks on my setup

The larger aftermarket master cylinder will allow the clutch to engage higher up. Use the 13/16" since yours is engaging off the floor. I've had some that didn't release at all and had to use the 7/8" master.

any model to recommend for bolt on?  

I get them from Kent at TPC. He has them made to his specs.

That's where mine (in the video) came from as well.

this is the big master you have />