Early 1970 Brake conversion help!

shermantank55

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Jun 16, 2006
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Georgetown, TX
We recently adopted a 3/1970 FJ-40 for my daughter's first car (the sickness is obviously hereditary). I have installed a MAF front disc conversion on my 1972 FJ-55, but this is a different animal. There is no brake booster, only a single reservoir master cylinder and a single brake line out.

Has anyone converted an early 40 to disc brakes? If so, can you help me with a list of recommended parts? I had good luck with the MAF kit, but see this will probably require new lines, master cylinder and the addition of a booster.

Help.:crybaby:

Thanks
Greg
 
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Sep 20, 2004
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try getting a booster/mc from a 7-70 fj40 and then the same maf kit will work. or you can get a much improved fj80 mc or a mini mc and use all mini stuff for the knuckle/brake upgrade.
 
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I have a 1970 with 4 wheel disc. You can either cut the support rib next to your master to allow a booster to fit, or you have to find a "spacer" that will move the booster out past the rib. I think JTO has spacers. If you have the original F motor, some people have a problem with the spacer, because the master MIGHT hit your carb.

Shawn
 
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the faq is full of the info you need...i found it very helpful when doing the same thing...i swapped in a disk axel...bought a firewall adapter from mark and a booster/master combo....still tweaking the system but all is good

good luck

osagecruiser
 

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