<VV> Front to Rear Brake Line / fittings

[Sethracer at aol.com]

Both the 65 and 66 Corvairs had the same single master cylinder with a  
single line going over to the brass X-fitting that mounts to/through the front  
bulkhead. That X fitting also acts as a 3-way splitter sending two 3/16" 
SAE  inverted flare lines out to the front brakes and a single SAE inverted  
flare line to the back of the car. At the back of the car, (under the  car) 
behind the rear seat bulkhead, is another T-fitting with the SAE  inverted 
flare from the front as the input and a pair of 3/16" inverted flare  outlets 
to feed the two rear brakes. In 1965, the front X-fitting used a 3/16"  SAE 
inverted flare fitting to feed the rear of the car, and a 3/16" SAE inverted 
 flare input at the rear T-fitting. The metal tube was 3/16" steel tubing,  
flared at both ends. For the 1966 model year, the front to rear tube was  
increased to 1/4" diameter. To accommodate this, the X-fitting at the front 
was  replaced with one having the same inlet from the Master cylinder, the 
same  3/16" SAE flared outlets to the front brakes, but a 1/4" SAE inverted 
flare for  the larger tube to the rear. At the back of the car, the 65 
T-fitting was  replaced with one having the new 1/4" SAE inverted flare as the 
inlet for the  new tube. The outlets were the same 3/16" SAE inverted flare as 
the 65. 
 
In 1967-69, Chevy still used the 1966 1/4" SAE tubing to feed the rear, but 
 replaced the X-fitting at the front with a pair of fittings to supply the  
fronts and rears with separate circuits.
 
Summary - 1966 parts changed from 1965:
 
Front X-fitting (1966 only)
front to rear tube (Pretty much 1966-69, slight location difference at the  
front.)
Rear T-fitting (1966-1969)
 
I hope that clears it up!
 
 All from memory, so - open to corrections! - Seth  Emerson
 
 
In a message dated 1/14/2016 8:29:32 A.M. Pacific Standard Time,  
virtualvairs at corvair.org writes:

I  helping a fellow club member restore his 65 Monza coupe.  It say fro 30+ 
 years so everything was rustys and went in the trash.  Now, looking  
Clark's book, I find two different ones fro 65's.  One is listed as 3/16  ID aand 
the other as 1/4. Aside from the obvious mathamatical difference,  what's 
the reaL world difference? Don't know what was on the car because the  trash 
is long  gone.
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