R-21 Master cylinder adapter

[Brian]

I have a stock Master cylinder on my R-21 and don't recognize the threads for the hydraulic line. They don't taper like a pipe thread, and don't have a seat like a double flare or AN would work with. Lastly, the hole is so big an -4 male fitting just drops in. If anyone know what the threads are, I'd appreciate knowing them so that I can adapt it to my -4 clutch line.

Many Thanks.

Brian

 

[Frank Catt]

Brian, do you mean the SLAVE cylinder on the R21 ? Frank

 

[Brian]

DUH!.............
Yes Frank, I mean SLAVE cylinder.

Brian

 

[Malcolm]

Brian

If your slave cylinder is off the car, any chance you could measure the bore for me?

 

[Frank Catt]

Brian, do you want me send adapter ?

 

[Brian]

Malc, i.d. of slave cylinder is 1.125" or 1 and 1/8" .
Thanks Frank, but I have already found an adapter.

Brian