I dont know, but...

any one know the thread/fitting size for the brake reservoir cap ??
Thankx
Zman

I dont know, but mine has a bronze porous filter on the top, does yours?

RV6 with RV7 firewall, reservoir in engine compartment.

I just finished the build on the firewall assy this evening:):)
 
Thankx...i needed the thread size to make a spill-over cap+hose when bleeding the brakes....yes my top cap has a filter as well.
Zman
 
Here you are!

Thankx...i needed the thread size to make a spill-over cap+hose when bleeding the brakes....yes my top cap has a filter as well.
Zman

I just went out to the GarageMahal.

Mine is also,

1/8" National Pipe Thread (Male. Tapered.)