First rx7 1983
 

Hey everyone! I just picked up a cherry 1983 rx7 that sat in a barn for 12 years. There is virtually no rust on it aside from a small bubble under the rear window. Dropped the gas tank and had it sent out to be repaired but i siphoned gas directly to the carb and she fired right up!. Came with a holly carburetor, fuel pump, manifold all in box, aftermarket exhaust already bolted up. Only problem im having is im only getting pressure to driver front brake, not sure if its a bad master cylinder or proportion valve or both. Any help would be appreciated!
https://cimg1.ibsrv.net/gimg/www.rx7...4fffebebea.jpg
https://cimg2.ibsrv.net/gimg/www.rx7...47147d53ff.jpg
https://cimg7.ibsrv.net/gimg/www.rx7...de205aa0b5.jpg
https://cimg5.ibsrv.net/gimg/www.rx7...412a4fedc8.jpg

Welcome to the board. :)

I would start at the line and the caliper itself, then if that proves unfruitful, then look to the master. Pull the line at the wheel. Make sure fluid flows unimpeded. Then inspect the caliper. Make sure it's not sticky, seized or blocked. Flush the whole system while you're at it.