Hi,

I have removed my worn one piston calipers, but i didn't look at it to see if there are V shaped 69 calipers.
I know :
- the width between the 2 bolts screwed on the bracket is 7 inch.
- the piston caliper is 2.67 inch (68mm) in diameter, this is quite big.

You told me :
There are rebuild kits available but they usually only come with the O-rings. The piston is offered as a seperate component.
For $13.49 each you can get rebuilt, unloaded (no pads) calipers from http://www.rockauto.com If you want a Raybestos rebuilt caliper with pads it's just over $33 each. Rockauto has some of the lowest prices on new and rebuilt parts.

what i can do :
#1 I can make my calipers completly rebuilt for 260 €, which is a lot !
#2 I can buy new rebestos calipers for 30 $.
#3 I can upgrade with PBR calipers and new rotors but i need fitting under a 15" rallye wheel...And this solution doesn't exist...
#4 i notice my rotors are not flat. There are the type with a line crossing a circle at mid diameter.

My questions are
#1 Does somebody know of the caliper i may have? do you recognize 2.67 " diameter calipers? are they bigger calipers then 69 calipers?
#2 Are rebestos calipers really the same quality as my actual calipers? because the price seems really low so i wonder.
I am even ready to pay 260€ for the rebuilt, it seems OK to me.
If you ensure me the reybestos calipers will brake as good as if i rebuilt my old ones, then i pay that of course. of not, then i might consider the next question.
And which are the most performent raybestos calipers i can buy, that will be a perfect bolt on?
(distance between the 2 bolts screwed on the bracket is 7 inch, and rotor thickness is 1")
#3 a PBR Brake upgrade that fits under a 15" wheel?
#4 If ever i decide to upgrade with C5 PBR caliper on a 12" rotor (and 16"wheels then), i can find the bracket, but i still miss the info concerning the right master cylinder and booster to use with rear drum brakes. i looked on all the web pages and it seems still unclear.
#5 about jl8 corvette brakes, the rotor is wider and it fits under a 12" rallye. the caliper needs to stand 1/4" more of thickness, and i think the system might cost a lot.

Thanks to help me decide what to do.

Marc

The stock '69 calipers if the big single piston ones are 2-15/16" piston diameter if this will help and it is common to a bunch of cars after '69..

And the '72/'78 or so truck/van caliper is the same except the pad jaw is a 1/4" wider b/c the rotor it is used with is 1.25" thick vs about 1.0" thick for a stock '69 car.

pdq67

The 81-up Chevy pickup had 2 brake setups,
the JB1 system used a 1" rotor (light duty brakes) and the JB5 which had the 1 1/4" rotor.

Just another donor vehicle that the 1" rotor calipers can be gottem from.

HTH
Virgil

You can make the commonly posted "do it yourself" PBR calipers with the 12" rotor fit in a 15x7 ralley wheel- I did it on my car, only had to sand about 1/8" off the fins on the calipers at the corner to make it clear. (and add a 3/16" wheel spacer) More info on the brackets, p/n's etc are on Dave Pozzi's website. -Dan

The stock calipers should have a bore of 2.9375" yours sound like the later model "metric" calipers. I believe they have the same bolt hole distance and will fit a 1" thick rotor, but the boure size is smaller than older calipers.

Some disc brake kits have calipers like this.

You might compare your calipers to a third gen -1985 Camaro front caliper.
The Metric calipers have less metal out near the bolt holes than the early calipers.

Here is a photo of the GM metric caliper http://www.behrents.com/Merchant2/graphics/en-US/graphics/00000001/usb7241-9003.jpg

Tyler TeeteJones claim the following part to built a C5 brake system. I still miss the master cylinder . SHould be good if the master cylinder worked with my booster.
-drum spindle/hub from 1st gen
-97+ C5 caliper, or Zo6 caliper, or 98+ Fbody caliper (all the same)
-98+ Fbody caliper basket
-98+ Fbody rotor (12" only.)
-98+ Fbody front brake line
-new bearings and lug studs
-My brake bracket (CNC laser cut)

Camaro6speed, did you make that swap fit under a 15" ralley wheel?

If so, i am very interested by that swap and still need to know which master cylinder i need... please advice on these two points, thank you. I want to keep my rear drums.

Thanks,
Marc

front what i found out,
- if i go with manual brakes : 77 Malibu with manual brakes. it has a 15/16" bore
- if i go with power brakes : ???

i am scared of a too hard brake pedal with manual brakes, but Novaderrick made it so why not...

what is the part number of that master cylinder?

where can i buy everything i need for the whole brake swap?

could we go through everything i need one more time over part number of tricky parts? like the basket, brake lines, hub seal, wheel studs, bearings, ...

What does that mean : "machine shop (to level the upper anchor point on a drum spindle with the lower steering arm hole, and a lathe to take out the OD of the hub.)"

Thanks for your help.

Marc

Marc,

Yes, I made it fit under a 15" rally rim. (15x7 4.25" backspace actually)

Master cylinder- I'm using the master power dual diaphram booster and their 1" bore master cylinder, and a electric vacuum pump. The feel is good but still a bit stiff. I have a 90's corvette master cylinder that I am going to try and adapt this winter and see what that does. It should be fine for my car since I have the 90's vette disks on the rear also.

Email me if you want and I should have a few pictures of the front brakes.

-Dan

So you have been keeping up with Teetoe, good move!!

Can anybody spit out part numbers for him??

Happy Holiday's.

pdq67

hi guys, merry christams !

Thank you for your help,
well, i got my calipers from the shop, I don't want to pay 260€ to have them rebuilt. SO I decide i will upgrade to C5 brakes. But i forgot something : to get all the parts here it will take me at least 2 - 3 months (cheap by boat). And so If i do the 'brake upgrade' this year, i won't be able to drive the car inb the summer. It is wiser if i now order the parts and next year i will upgrade to C4 or C 5brakes.

So today i took my calipers appart, cleaned the bore and piston, and i think i 'll assemble everything back that way because the piston is very nice. BUT i need new seals, specially the dust piston seal, the big one in front at the outside of the piston

if you know where i can find that dust piston seal, tell me ! i need that rubber seal to rebuilt my brakes.

And still am interezsted by the C5 upgrade, that i will install in the winter 2004 - 2005.

Happy celebrations !

Oh David ... I have that GM metric caliper like on your photo. 68 mm bore diameter.

Marc, then you will need seals from a third gen Camaro with iron calipers which is from 83 through 93, I think. The 1LE camaro had a corvette aluminum caliper but otherwise I think they all had that metric caliper.
David