Performance Brakes

[anastosmotors]

Attached are some pictures of my new brake system project for my racing car that they are going to fit with 13" wheels. Using '83 BMW 320i front hub with Opel wheel bearings, '77 BMW 320i vented brake rotors & front caliper from '84 Volvo 240 for vented rotors. I had to drill the mounting holes 5/8" offset so I could drop the caliper 2mm closer to the rotor. Haven't tried them yet. Somehow I have to find out how to drill the caliper internally so I could use only one brake line like it was done on my current non-vented Volvo calipers.

[namba209]

Am I correct in presumming you have a brake line to each side of the caliper? If so, you could do kinda the same thing "Nobody" did on his brake upgrade. He needed to go from a single hole to a dual line. I suggested he use the "T" brake line fitting over the rear axle of the GT and go from a single to a dual line. You could use the same "T" and run a second short line to the other side of the caliper, thereby saving you the hassle of splitting the caliper and drilling a passage. JMTCW.

[RallyBob]

Damn, that's a big caliper! I don't think there's gonna be a whole lot of flexing going on there. Let us know how it works, and if it fits inside a 13" wheel nicely.

Bob

[baz]

ron by spliting the single line are you not halfing the effective power as you are only supplying the same amount of fluid and splitting it into two cylinders??
or had "nobody" put a larger M/C on to compensate?

[anastosmotors]

yes, i am using bigger master cyl [ volvo m/c]. caliper is drill inside,so
i am using one brake line. Look at the pic at latest forum topic " the turd
get a new rally suspension" under "anastos motors". It is volvo caliper
75 opel soilid brake disc and 13" minilite wheels that i am using for 15 years
Pete

[baz]

i see that pete
i was asking ron what he told nobody to do
what "ovlov" was the caliper from ? i have a suspision i will be asked to look for some soon as they look to be an easy swop and being ineurope i have easyer access to a lot of parts

[anastosmotors]

i think was early 80,s
Pete

[namba209]

Baz, What "Nobody" did was put a BMW MC on his rear disc brake mod and the brake ports were on the other side of the MC with only two brake line ports and not a lot of room for the banjo fitting from the Opel MC. So in order to run a line to each front disc, I suggested the T brake fitting from the rear axle in order to get a line to each front disc from the MC. HTH.

[soybean]

Baz, here's the thread http://www.opelgt.com/forums/showthr...+vented+brakes Might help a little. Jarrell

[baz]

thanks that clears it up nicely now has any one an idea how to clear this rash on my grion

[nobody]

What I found was that the stock MC didn't have the volume to do 4 wheel discs. The stock one uses the same piston for both front discs but has 2 ports on it. I chose the BMW one since it had 2 ports and didn't want to have to wonder if I had something that was going to give me grief later on. It was also an ATE and a direct bolt up to the stock booster. On the GT it has very neutral bias and now the brakes have the stopping power to excede the added horsepower. Besides 4 wheel discs behind the BBSs add a cool factor that is hard to beat.

[garrymc]

Volvo caliper mods for one brake line can be seen here...

http://www.tati-motorsport.nl/public...OpelAsconaB/17