Brake Booster Upgrade ?

I'm upgrading my 85 GT brakes and wish to add a bigger booster to the master cylinder.

What booster are people using?

How was the fit?

How well did it work?

here's a peek at what I'm doing...

I think I see a little bit Lebaron hiding under there.

Well stolen from here,

http://www.fierodotcom.com/viewtopic.php?t=150

I attended a technical session hosted by my club (NEFA) today in Rhode Island. Phil Randolph showed us how to replace the stock power booster with a larger one from a '97 Chevy S-10 Blazer with a V6. The swap is almost a bolt in but reqiures a little work to make it work. The only other thing you will need are 4- 10MX1.5 nuts to bolt the Fiero bracket to the new booster.Try to get Nylock ones or use locktite,lock washers and washers to properly mount the booster to the bracket. You don't want this part to come loose or your brakes will be gone. The best part is that the larger power booster provides a larger clamping force and better braking than the stock one did.
You first need to remove the pin that attaches the power booster's banjo to the brake pedal. Then you unbolt the brake master cylinder and pull it out of the way.

Here you can see the two power boosters side by side.

You need to grind off the mounting bracket from the old power booster to reuse it with the new one.


You will also need to extend the banjo on the new power booster so that it is about 9-1/2 inches long from the body of the booster to the center of the hole in the banjo. Phil had made a sleeve to join the parts he cut together and then had the whole thing welded. You can sort of see it in this picture if you look closely.


You then reattach the bracket to the car.

You then trial fit the new power booster. It won't fit because it touches part of the sheet metal in the front compartment. Mark where this is.

Now take your trusty mini sledge hammer and bang away to get the extra clearance you need.



Finish bolting everything back together when you have the clearance and hook the brake pedal back up. Press you brake pedal to make sure it seems to work and make sure your reservoir is full.
Take the car out for a test drive. Phil was saying that he couldn't get the brakes to lock up at 30 MPHs. Here are the results after the change.

I think he left a good 20 feet of rubber on the street. This was on his wife's '88 T-Top four cylinder notchie.

thanks Dave, that's exactly what I was looking for.

And yes to the Lebaron id.

Between the bigger booster and the 11.25" disks the car should be able to stop a bit quicker