• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

68 Roadrunner power brake added to drums issue

austinsguns

Member
Local time
2:57 AM
Joined
Mar 27, 2015
Messages
5
Reaction score
2
Location
NW IA
A friend of mine has recently redone his 1968 roadrunner. The car has OE 11" drums all around, and originally had manual brakes. He added a new master cylinder/booster setup. After the brakes have been well bled, and adjusted, the car still does not stop well. The brakes are not mushy or soft, but it fells like the booster is not helping much. The difference at the pedal with the car running and not running is minimal. The engine was rebuilt with a mild cam. It seems to have adequate vacuum (i did not verify with a gage). I have added a few pictures of the setup. Do we have the wrong booster/z-bar? Any feedback is appreciated.
 

Attachments

  • 20150420_175441.jpg
    20150420_175441.jpg
    89.8 KB · Views: 155
  • 20150420_175448.jpg
    20150420_175448.jpg
    68.3 KB · Views: 143
  • 20150420_180128.jpg
    20150420_180128.jpg
    75 KB · Views: 149
Did you check the booster to master cylinder rod. If it is to short brakes will not apply completely, if to long they will not disengage.
 
Auto Transport Service
Back
Top