so I offered the 79 brake booster which was in his question that was directed to me?

 

i'm not sure if the master side of the booster is correct, my 84 looks like it only has 2 bolts that attach the master to the booster

 

here you can see the problem, how close the valve covers are to the mc/booster location

 

There's 4 bolts for the '79, so it looks OK from that perspective.

As an alternative, how about something like this, if you're running power steering? No need for the booster can.

http://store.summitracing.com/partde...5&autoview=sku

Or something like this:

http://ecihotrodbrakes.com/remote_booster.html

Pricey, I know, but gets around your problem.

Going back to my original question, what about no booster at all? I know some older cars didn't have boosters.

 

If I got a '79 booster I would be using my 84 SE master, so they must be able to bolt up, that booster picture shows a completely different bolt pattern for bolting the master on, looks like a 4 bolt diamond pattern, if that is the correct picture then the '79 master will have to be used also, unless I can cut 2 of the master mounting bolts off and make it work like that.

 

and if you use the '79 master on your later car, you'll have the ever so fun problem of converting the m10x1.25mm thread pitch on the 79/80 masters to the m10x1.00mm thread pitch used on the FB's.

ask me how i know (late model brakes onto an SA)... that was a ****** headache.

hopefully my experience will save you a headache. It can be done, but with a bunch of money and convoluted-ness in connectors and adapters.

 

for me all that really needs to be done is flare new fittings on at the master...

 

They do. In my '79, I have the original booster and the m/c from a '83. I also have the proportioning valve from the '83. You'll have two extra studs above and below the m/c. That way, you have the correct proportioning for rear disc brakes and you completely avoid the thread pitch mismatch jutny mentioned.

 

thanks for the straight info that was the only issue I was concerned about.

 

Ooops. The m/c uses the top and bottom studs, now that I think about it. It's the ones on the sides that aren't used with the later m/c. The mounting plate for the proportioning valve hits the unused stud on the one side. I worked around that by bending the plate a bit and I think I had to bend the hard line a little bit, but you could grind it down or cut it off.

 

ah yes i hadnt thought of that, i didnt really have that luxury

so yeah, sounds like you're all set with a 79 master then, good luck man.