Series IIA brake reservoir replacement question

Any history or background on series IIA brake reservoirs?
I'm in the throes of replacing the master cylinder on my 66 FFR IIA,
and was thinking of replacing the fluid reservoir. It's fairly beat up
from too many wrenches over the years.

I'm trying to do a "trust, but verify" about replacing it.
I looked at the parts diagram in a Haynes restoration manual, page 212,
and it shows a reservoir like I have - with two outlets out of the bottom of the can.
Page 84 of the 1966 FFR manual shows a different perspective drawing, but the same
2 outlets on the bottom can.
They look exactly like the Girling reservoir I have on my '59 Healey 3000.
The Girling repros (and replacement parts) are relatively inexpensive - see here
https://mossmotors.com/supply-tank-reservoir

However -
The green bible, and our sponsor, only show a (pricier) reservoir with a bottom and a side outlet, and no other options.
When did the side outlet first appear? Other than being stainless, is there any difference in performance
or operation?

This Series 2a reservoir has two compartments. One for the brakes and one for the clutch.
the Healey one is a single compartment reservoir. I guess the unusualness of the LR one makes it more pricy.

Dave

Quote:

---

Originally Posted by caperover

Any history or background on series IIA brake reservoirs?
I'm in the throes of replacing the master cylinder on my 66 FFR IIA,
and was thinking of replacing the fluid reservoir. It's fairly beat up
from too many wrenches over the years.

I'm trying to do a "trust, but verify" about replacing it.
I looked at the parts diagram in a Haynes restoration manual, page 212,
and it shows a reservoir like I have - with two outlets out of the bottom of the can.
Page 84 of the 1966 FFR manual shows a different perspective drawing, but the same
2 outlets on the bottom can.
They look exactly like the Girling reservoir I have on my '59 Healey 3000.
The Girling repros (and replacement parts) are relatively inexpensive - see here
https://mossmotors.com/supply-tank-reservoir

However -
The green bible, and our sponsor, only show a (pricier) reservoir with a bottom and a side outlet, and no other options.
When did the side outlet first appear? Other than being stainless, is there any difference in performance
or operation?

---

The Moss Girling repros and the exisiting reservoir on my 66 FFR both have
an internal separate reservoir inside the can. I'm sure Girling made a
gazillion of these for the British motoring market - not sure why Rover used
a can with a side mount can - there's certainly enough space in and around
the bulkhead.

Interesting PDF file to read on the Moss Repro here https://mossmotors.com/media/instructions/582-981.pdf

Thanks

Found the parts I needed

I wonder if my pressure brake bleeder cause may tank too leak?

Need to order the new replacement seals

josh