Free is the motherhood of invention sometimes.

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

Quote
pdxphil42
I chose it as it came with the car. If it's too big, I'll try a smaller one.

It wont be too big if the car has a set of front calipers on the rear. The caliper piston area is quite high and the 3/4 is exactly whats needed.

Caliper pistons are, IIRC, 1 3/8" all around. That's the size that as the single-pot rear calipers used in those cars.

Or maybe they're 38mmx4... either way, they're not "huge", but pretty big for a rear caliper.

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Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.

Quote
Pete
Caliper pistons are, IIRC, 1 3/8" all around. That's the size that as the single-pot rear calipers used in those cars.

Or maybe they're 38mmx4... either way, they're not "huge", but pretty big for a rear caliper.

4 x 36mm

It's been done (Derek Bottles got a kit where I used Superlites 4 x 1.75"/44,5mm front, and the RX7 4 x 36mm rear. Used a 5/8" master.
Worked truly soooooooooper bitchin)

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John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.

Quote
john vanlandingham

Quote
Pete
Caliper pistons are, IIRC, 1 3/8" all around. That's the size that as the single-pot rear calipers used in those cars.

Or maybe they're 38mmx4... either way, they're not "huge", but pretty big for a rear caliper.

4 x 36mm

It's been done (Derek Bottles got a kit where I used Superlites 4 x 1.75"/44,5mm front, and the RX7 4 x 36mm rear. Used a 5/8" master.
Worked truly soooooooooper bitchin)

Go figure! Sounds very familiar. The brakes on my car are "old" but the hand brake m/c is new.

---

"I, for one, welcome our Robot Overlords." - Philip J. Fry

Quote
pdxphil42

Quote
john vanlandingham

Quote
Pete
Caliper pistons are, IIRC, 1 3/8" all around. That's the size that as the single-pot rear calipers used in those cars.

Or maybe they're 38mmx4... either way, they're not "huge", but pretty big for a rear caliper.

4 x 36mm

It's been done (Derek Bottles got a kit where I used Superlites 4 x 1.75"/44,5mm front, and the RX7 4 x 36mm rear. Used a 5/8" master.
Worked truly soooooooooper bitchin)

Go figure! Sounds very familiar. The brakes on my car are "old" but the hand brake m/c is new.

Is that Derek's car that went to Manspeaker?

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John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.

Quote
john vanlandingham

Quote
pdxphil42

Quote
john vanlandingham

Quote
Pete
Caliper pistons are, IIRC, 1 3/8" all around. That's the size that as the single-pot rear calipers used in those cars.

Or maybe they're 38mmx4... either way, they're not "huge", but pretty big for a rear caliper.

4 x 36mm

It's been done (Derek Bottles got a kit where I used Superlites 4 x 1.75"/44,5mm front, and the RX7 4 x 36mm rear. Used a 5/8" master.
Worked truly soooooooooper bitchin)

Go figure! Sounds very familiar. The brakes on my car are "old" but the hand brake m/c is new.

Is that Derek's car that went to Manspeaker?

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

John-

Any idea what these brake rotors cross to? I understand they are Saab 900 or something. They look like rears with the taller center hat but I can't seem to find vented rears.

++phil

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

Quote
pdxphil42
John-

Any idea what these brake rotors cross to? I understand they are Saab 900 or something. They look like rears with the taller center hat but I can't seem to find vented rears.

++phil

Them's plain jane 1986 AND 87 Saab 900 front vented..


Lovely plumage....

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John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.

Thanks, sire! I'll check out a set at FLAPS.

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"I, for one, welcome our Robot Overlords." - Philip J. Fry