Press Fit Studs for Master?

[texski]

Looking for a temporary solution that has lead to a bigger question. Masters come with 4 holes. The one I took off has 4 press fit studs. Raybestos list a hole size of 0.354", and McMaster list 5/16 studs needing a 0.311 hole a difference of more than 0.040. Raybestos was no help.

What are these studs and where can I find them?
Thanks,
Mike

 

[moparleo]

Which ones did you need ?

 

[texski]

I need the ones that fit the 0.354 holes. It will be an aftermarket master. So not concerned with resto-perfect.

 

[mayhem]

Challenger RTA's pictures below explain a lot.

 

[Challenger RTA]

Front?

 

[Challenger RTA]

Back?

 

[Mopars & Missiles]

Manual brake cars have the "studs" pressed into the master cylinder, whereas power brake cars have the "studs" in the vacuum booster instead of the master.

I believe the OP has a manual brake car and needs the "studs" for the master cylinder, not the booster.

 

[DaveBob]

Looking for a temporary solution that has lead to a bigger question. Masters come with 4 holes. The one I took off has 4 press fit studs. Raybestos list a hole size of 0.354", and McMaster list 5/16 studs needing a 0.311 hole a difference of more than 0.040. Raybestos was no help.

What are these studs and where can I find them?
Thanks,
Mike

Instead of pressing studs into the master cylinder, I made stud plates that I installed from the interior side. I needed these after switching from power to manual brakes and an aftermarket master cylinder. The studs are actually bolts that are threaded into a 1/4" thick plate. Looking from the engine bay side, I have four studs to mount the master cylinder and two studs above the master cylinder to mount the wire looms.

 

[Mopars & Missiles]

Instead of pressing studs into the master cylinder, I made stud plates that I installed from the interior side. I needed these after switching from power to manual brakes and an aftermarket master cylinder. The studs are actually bolts that are threaded into a 1/4" thick plate. Looking from the engine bay side, I have four studs to mount the master cylinder and two studs above the master cylinder to mount the wire looms. View attachment 137818

Very nicely done! Where there's a will, there's a way.

 

[Challenger RTA]

Challenger RTA's pictures below explain a lot.

I just wasn't sure what he was referring to. So I shotgund it and missed!
Sometimes you just have to unload!

made stud plates

Nice job Dave Bob!

 

[mayhem]

Instead of pressing studs into the master cylinder, I made stud plates that I installed from the interior side. I needed these after switching from power to manual brakes and an aftermarket master cylinder. The studs are actually bolts that are threaded into a 1/4" thick plate. Looking from the engine bay side, I have four studs to mount the master cylinder and two studs above the master cylinder to mount the wire looms. View attachment 137818

And that's what hot rodding is all about! What is it they say about necessity is the mother of invention?! Good on ya!

 

[Katfish]

Very nice, many moons ago on my first Challenger, the rebuilt MC didn't have the the studs.
I just put in some bolts, had to have a friend hold the socket inside, while I tightened them up.
We didn't know or care about "originality" back in the 80s.