Brake Booster / master cylinder clearance too tight ?

[mcwho]

I am using the whitbys power brake conversion but I am using a corvette style MC cause I wanted the connectors on the inside and did not want to have remote reservours cause i couldnt find room for them.

Is is possable that the rod from the booster to the mc iss too tight..?

I have had the front brakes overheat and not release until i poured water on them. I thyink I could put more washers between the booster to mc and get a little more clearance.

Any ideas?

Bob

[Jeff Kleiner]

Using the proper master cylinder would probably go a long way to curing your problem. Just sayin…

Jeff

[Norm B]

Here's a link to a You Tube video on how to adjust the master cylinder push rod. https://www.youtube.com/watch?v=OZGzsIeVjG4. This is assuming that the master cylinder and the brake booster are compatible. The pushrod diameter has to be smaller than the recess in the master cylinder piston. This is just one of the many reasons, as Jeff suggested, it might be better to use the correct master cylinder.

HTH

Norm

[Norm B]

If you don’t have enough adjustment room on the push rod in the booster, you could try installing one or more of the spacers FFR supplies between the master cylinder and the booster. You should be able to get it adjusted properly with the right combination of spacers and push rod adjustment.
Not sure if the spacers are sent with the complete kit. I think I have them in my box of unused parts so, if you need them pm me and I will ship them.

Norm

[toadster]

did you use a brake booster spacer adjuster tool? I had to remove one of the whitby spacers because it was never going to work... this tool is really cheap and a quick way to check your throw

https://thefactoryfiveforum.com/showthread.php?34952-25th-MKIV-9772-Build-NOR*CAL-restarting-wiring&p=454130&viewfull=1#post454130

[mcwho]

Thanks for feedback i used a micrometer and was carefull to make sure it wasnt too tight. I did own a 2000 mustang gt and had the same sticking front calipers issue so thats a possability as well. I just need to find out what year, and model ford parts are compatable.

[CraigS]

The Ford PBR front calipers w/ phenolic pistons have been known to stick.

[Norm B]

The master cylinder from a 94 or 95 GT is compatible with a vacuum brake booster and rear disc brakes. There are probably others that work but Ford used that set up in those two years before switching to hydro boost in 96.

Norm

[Fordman114]

I would check to see if the rod going into the booster is adjustable. I have seen lots that are. You’re on the right path though, your m/c is not returning to a neutral position

[mcwho]

T

he Ford PBR front calipers w/ phenolic pistons have been known to stick.

Craig, Thanks for the feedback.

Do you know what Year/make/model would be appropriate to fit these cars w over the counter parts so that I could use RockAuto or AutoZone for replacements. I am gonna call FFR this week and see if they have a consumable parts list with xref to the Year Make/Model thing as well. Id also like to use the Powdercoated parts.

The parts I want the xref for are as follows:

Front Brake parts
rotor/pads/caiper

Rear Brake Parts early IRS setup w Aluminum pumpkin ( think its a 3.27 Ratio and may be Lincoln Mk VIII, Kit delivered in 7/15/2010

rotor/pads/caliper

on a side note I owned a 2010 Mustang GT convert and it had the sticking caliper as well/

Thanls
Bob

[Jeff Kleiner]

Do you know what Year/make/model would be appropriate to fit these cars w over the counter parts…

Front brakes are 1999-2004 Mustang.

Jeff

[mcwho]

Just noticed a typo in my previous post, the Mustang that I owned that had the same Front Brake issue was a 2000 Mustang GT convert.