I recently did a brake swap on my 87 4R 22re, to the MC, calipers, and booster off of a '93. Everything went dandy, except the booster turned out to have a leak. Whooshes when pedal is depressed, and I only get boost at the top end of the pedal travel. I swapped back to the original single baffle booster, but it's really not powerful enough to push the new MC.

Is there any good way to find a fix a leak in the double baffle booster, or do I need to order up a new one?

 

junk yard, I upgraded my MC and booster to a T100 1" bore, and dual booster. for like 35 bucks. 25 for the MC, 10 for the booster, and I snaged some spare lines.