[FC] Rampside Dual Master Cylinder Conversion HELP
Dale Dewald
corvanatics@corvair.org
Sat May 29 16:36:01 2004
At 08:12 AM 5/29/04 -0400, Diodato Grisi wrote:
I just received my Dual MC Conversion Kit for my '62 Rampside, through a NE
vendor. A few questions come to mind though:
Hello Diodato,
Both of our Greenbriers, '64 & '65, have dual MC conversions. Although I
did not personally install the kits I might be able to answer some of your
questions.
1) How large a hole should be cut out of the floor pan;
We have not enlarged the hole in the floor. Space is limited, but the
master cylinder cover can be slipped off from below to check/add
fluid. This is much easier to do this when the vehicle is up on a lift, as
opposed to flat ground or service pit at a fast oil change shop. If you
want access from above I would recommend that the MC be installed first
(with the cover off and the top taped over) then enlarge the hole as needed
with a pair of metal snips.
2) Is there a plug for this hole, to keep water from entering;
No, but a cover plate can be fabricated from some sheet metal.
3) I'd like to replace the hole brake line system. Are the lines,
>both hard and soft, and wheel cylinders available from local parts dealers?
The two hard lines attached to the front crossmember are available pre-bent
from Clark's. I do not think any other FC lines are available
pre-bent. You will have to measure the old lines and use them as patterns
for bending new ones. A good, full service auto parts store should be able
to make up double flared straight lines in the lengths you need. I have
been able to order wheel cylinders (or rebuild kits) from the local auto
parts store, but they were more expensive than the Corvair vendors. I have
always bought hoses from the Corvair vendors.
4) What's the preferred brake fluid type to use?
I would use DOT 4 (glycol) or DOT 5 (silicone). Silicone fluid is very
nice and noncorrosive but is hard to bleed properly to avoid introducing
small air bubbles and dissolved air which makes for spongy brake feel. DOT
4 is pretty much foolproof.
5)Any suggestions on how to do
>this conversion would be appreciated.
Read the directions fully first before starting the work.
Dale