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> Front Calipers on Rear
Evill Ed
post Mar 13 2003, 05:59 PM
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Okay, I need to have my memory refreshed here. If I want to put stock 914-4 front calipers, 73-76 type, on the rear, is this a direct bolt on? I know I need to bend up new hard lines or do you need a banjo fitting?

Ed

BTW- I know that I will not have a parking brake.
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campbellcj
post Mar 13 2003, 06:05 PM
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It's a bolt-on but I think the calipers need to be spaced-over (recentered) a little bit. I can take a pic of mine this weekend if it would help.
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Evill Ed
post Mar 13 2003, 06:12 PM
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QUOTE(campbellcj @ Mar 13 2003, 04:05 PM)
It's a bolt-on but I think the calipers need to be spaced-over (recentered) a little bit. I can take a pic of mine this weekend if it would help.




Yes, pics would be great. What did you use to space them out, shim washers?

Ed
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ChrisFoley
post Mar 13 2003, 07:23 PM
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If I am not mistaken, the early front calipers fit on the rear with no adapter necessary. The pads will overhang the rotor a little though.
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MarkV
post Mar 13 2003, 08:49 PM
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Ed,

Nice avatar, little fuzzy though.

Mark

73 2.0
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Brad Roberts
post Mar 13 2003, 09:38 PM
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Ed,

I used washers to locate them. The last one I did took two of them (late calipers)

B
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campbellcj
post Mar 13 2003, 11:17 PM
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Yeah, just thick washers. I will take a pic tomorrow after work, or Saturday.
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Scott
post Mar 14 2003, 12:09 AM
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Chris,

Will the pads over hang if you use 914/6 rotors?
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ChrisFoley
post Mar 14 2003, 06:32 AM
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I don't know Scott, are the -6 rotors at least 1/4" larger in diameter? That is about what it would take.
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Scott
post Mar 14 2003, 10:15 AM
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I don't know chris. I guess that we will have to see if someone else knows.

So, any one know if the 914/6 rear rotors are larger in diameter than the stock 914 rears? By how much?
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Dave_Darling
post Mar 14 2003, 11:08 AM
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They are, but not by much at all. The Six rear rotors rub on some Four rear calipers, but only by a tiny amount. And they don't rub on all Four rear calipers...

--DD
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campbellcj
post Mar 14 2003, 01:43 PM
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I have the -6 rear rotors and -4 front calipers on the back of the car now. Just lemme know if I can measure or shoot pics of anything.
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Scott
post Mar 14 2003, 02:01 PM
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Yes...Maybe not measure but what are the fit issues.

Do you have the older calipers or later ones?

Used spacers?

Do the pads over hang the rotors?
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Brad Roberts
post Mar 14 2003, 02:11 PM
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Scott.....

They fit fine. I run them all the time.

Now.. please let me know TODAY whether or not I need to bring you front calipers for the rear.

I have never seen the pad overhang.. and wouldnt care if I did.

B
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MJHanna
post Mar 14 2003, 02:19 PM
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If you put fronts on the back, add an adjustable bias knob and take out the factory proportioning valve. (IMG:style_emoticons/default/beerchug.gif)
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Evill Ed
post Mar 15 2003, 07:04 AM
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QUOTE(MarkV @ Mar 13 2003, 06:49 PM)
Ed,

Nice avatar, little fuzzy though.

Mark

73 2.0

Oh man did I steal/copy your avitar?

I'm looking inot a new one ;^)

Ed
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Evill Ed
post Mar 15 2003, 07:07 AM
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QUOTE(MJHanna @ Mar 14 2003, 12:19 PM)
If you put fronts on the back, add an adjustable bias knob and take out the factory proportioning valve. (IMG:style_emoticons/default/beerchug.gif)

I have M style front caliper. They are off of a BMW, not 320i, a larger BMW with vented rotors, 5 series I think. They have larger pistons than the Porsche M caliper.

With the stock 914 fronts on the rear, will I need a proportioning valve? Right now I have a T with the stock rear caliper with no braking issues.

Ed
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MJHanna
post Mar 15 2003, 11:04 AM
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Yes, in that you no longer have a matched system with the factory valve, you need to be able to rebalance the system. If you have a panic stop on the street and your rears lock up before the fronts your not going to be having much fun. (IMG:style_emoticons/default/driving.gif) And on a track vehicle it’s imperative.
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porschewiz
post Mar 15 2003, 11:11 AM
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Hey Ed .... Are you running stock 914 rotors on the front?
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Evill Ed
post Mar 15 2003, 04:56 PM
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QUOTE(porschewiz @ Mar 15 2003, 09:11 AM)
Hey Ed .... Are you running stock 914 rotors on the front?

No, I have an early 911 front end with vented rotors and M style calipers.

I have the stock 914-4 rear calipers with 914-6 rotors, no proportioning valve.

I have never locked the rears on the street or the track.

I will add the proportioning valve as an added safety measure. Any recommendations for the valve?

Ed
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