1985 BJ70 Brake Booster options?

TrailRunner40

SILVER Star
Joined
Jun 12, 2013
Messages
48
Location
Middle TN
Hey yall,

I have a LHD BJ70 and have replaced most of the brake parts but still having a weak brake. The last part to get switched out will be the booster. Unfortunately, the OEM booster is crazy expensive and have heard that the 60 or 80 series will bolt up but may require some slight fab work. Anyone have a recommendation as to which booster would be a closer fit? I need to find one and get this puppy back on the road.

Thanks
 

doug720

 
Joined
Sep 27, 2008
Messages
3,106
Location
El Segundo or Gardnerville!!!
As Roscoe stated check to see if the vacuum system is working properly.

I don't know the Toyota diesels well, but on my Isuzu 4BD2 swap in my 60, the diesels alternator vacuum pump created much more vacuum then the 2f ever did. This resulted in more power vacuum assist = much better brakes!

Have you checked the vacuum pump, lines, vacuum reservoir and booster for leaks and function?
 

TrailRunner40

SILVER Star
Joined
Jun 12, 2013
Messages
48
Location
Middle TN
Thanks guys and yep, vac seems to be working well so I’m guessing the only thing left is the booster?
Bled system, checked brake lines, new parking brake, new master, vac is good.
I have about 50% of what I expect. I can drive it and it will stop but I ha e to really get on the brakes hard to stop quickly.
 
Joined
Jul 5, 2013
Messages
310
Location
San Diego
I just installed an 80 series booster into my 70, still waiting on some other parts to finish up the install, but it was a direct bolt in, just had to lengthen the push rod by about 3/4", I got mine at a junk yard for $70($90 shipped to my house), and a new MC from cruiser outfitters.
 
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