A quick question about the Hyd clutch on the Grav trans. Bleeding the line on clutch has been a contest. How much pedal pressure is normal ? If I have all the air out of line, the pedal seems soft. Have no idea on what is normal on this trans. I can depress pedal relatively easy with my hand. Tried to see any movement at the inspection holes on trans but nothing.
Racelogic and gated shifter
Frank Clark
Supporter
Mine is real tuff by hand. Foot pressure is normal. That is less than a viper, more than a Honda.
Frank Clark
Supporter
I'll check. I'm out tonight.
PeteB
GT40s Supporter
Mine's 3/4"
Frank Clark
Supporter
Mine too. Specifically:
Tilton 75-Series Universal Master Cylinder Kits 75-750U - Free Shipping on Orders Over $99 at Summit Racing
This one (I have a spare in the trailer).
BTW, we have a Lotus Evora that has a ceramic clutch. One of those it's in or it's out jobs. We reduced the MC size by 1/8" to get more travel. Made a huge difference in pedal effort. I personally hate it (too light), but much easier to get the car going without stalling it now.
On the Sprint car we have a few brake Master Cylinders. We see the same thing, 1/8" up or down makes a very noticeable difference in effort and travel.
Tilton 75-Series Universal Master Cylinder Kits 75-750U - Free Shipping on Orders Over $99 at Summit Racing
This one (I have a spare in the trailer).
BTW, we have a Lotus Evora that has a ceramic clutch. One of those it's in or it's out jobs. We reduced the MC size by 1/8" to get more travel. Made a huge difference in pedal effort. I personally hate it (too light), but much easier to get the car going without stalling it now.
On the Sprint car we have a few brake Master Cylinders. We see the same thing, 1/8" up or down makes a very noticeable difference in effort and travel.
I have changed out the MC from .625" to the .750". Had to order some Wilwood fluid, will bleed the clutch next week. I did talk to Fran about the thing, he said the .750" was correct. Fran told me that they are building a gated shifter similar to the Audi unit. He said it will be available to all the Graz owners. I have been considering getting the Audi unit. BUT when Fran comes up with one, I'll put one on Aero & SL-C
If anyone is still looking for a used Audi R8 shifter gate(I only have the gate, Audi P/N 420713109C3Q7), I ended up with an extra one, that I don't need. I will part with it for what I paid for it (which is about a third the price of a new one), plus shipping. It's condition as shown in the photo's. The car I am working on is my RCR SLC with Graziano trans. and BMW N73 engine.
Attachments
Ron McCall
Supporter
Similar threads
