So, after two years I finally started up my project build, idling was a little rough, but she started, and the rear hubs were turning, so overall things are good. :)

 

However, I've used a TT shell, and put my NA engine in it, so switched from an NA clutch cylinder, to a clutch booster.

 

I was expecting the clutch pedal to firm up when the engine was running, but it requires very little pressure to push it down, there's pretty much no resistance.

 

There doesn't seem to be a loss of fluid, so I was wondering if my vacuum connections may be at fault. There's no difference to the clutch pedal with the engine running, or not, feels the same.

 

 

I have two non return valves, either side of a T connection.

 

Can anyone see any obvious problems here?

The one way valves are in the wrong places, the clutch one needs to be from the tee to the clutch, so they are seperatly valved. Otherwise your achiving nothing there with the second valve. Do your brakes work?

Also did you mix and match? Or is it a complete tt assembly? It should be stiffer when off to when the engine is running, the idea is that it reduces the force required to push the heavier clutch, Nissan were worried gentlemen might damage thier shoes with the heavy tt clutch.

Edited August 4, 201411 yr by Stephen

So, sorry if I'm not understanding, but you're saying I need to do it like this -

 

 

Brake system wise, it's mostly all turbo stuff, actually, the only thing non turbo, is the clutch, gearbox (think these are the same on the TT and NA anyway?) and the slave cylinder . The plenum doesn't have the extra connection for the brake booster, obviously why I'm doing this, lol. I haven't removed the vacuum tank in the wing, as I didn't want to complicate things, so that's all still there. The clutch cylinder fluid hard line pipe runs directly down to the slave flexi pipe.

 

Oh, I haven't tried the brakes yet, as the rear calipers are currently drying in my kitchen, and the front don't have any pads in.

That's correct.

Cheers! I won't get back to the car now until next week, but I'll make it my first job! :)

Personally I'd be jacking it up and checking the slave piston moves when the pedal is depressed. It may be the system still isn't bled, it's notoriously a pain in the ass.