Mueller
Mar 20 2005, 01:59 AM
The pad overhang was not as bad as I had originally thought.....taking the pads to the bench grinder (recommended by a high performance brake pad engineer), I just need to add a chamfer to the edge of the pad to get rid of the overhang......pretty darn easy once I gave it a shot....
the adapter itself will be pretty easy to make and shouldn't cost me much at all for supplies....
I know have to decide what color to paint the calipers
Mueller
Mar 20 2005, 02:00 AM
closeup of the pad overhang
Mueller
Mar 20 2005, 02:01 AM
this ought to look nice behind my Revolution rims once painted and detailed a little better
Twystd1
Mar 20 2005, 02:25 AM
Mike... You are simply amazing........
Sometimes I wish I was you...... Just way better looking...
Twystd1
URY914
Mar 20 2005, 06:15 AM
Please take a grinder and get rid of the "MAZDA".
Smells of burning rice.
Qarl
Mar 20 2005, 07:23 AM
It looks pretty nice... except for the MAZDA crap...
michel richard
Mar 20 2005, 07:58 AM
Did I miss an earlier thread ? Have you given details on the source of those calipers ? If not, please provide !
Michel Richard
914/6 2.2E MFI
McMark
Mar 20 2005, 09:28 AM
Now that's taking stock to a new level.
Would that put you in Ai for autocrossing since you still have the stock suspension.
Mueller
Mar 20 2005, 09:37 AM
the "mazdaaaaa" will be milled off.....I'd like to remove the little "hump" below the mazda as well, but I need to remove the pistons to make sure it doesn't have any value to the calipers....
Michel,
calipers came from '86 to '90 or '91 turbo RX-7,
2 different calipers came on those cars, one being this one, the other one a cast iron 2 piston caliper, I bought these for $50 each fully rebuilt (minus the pads), another club member here has bought a bunch at the pick-n-pull autosalvage places for about $15 a pop.
the pads cover the disc very nicely (too much at the OD, but that is taken car of now)
the adapter is on a 3" spacing /4 strut, basic dimensions of the adapter are 7x1.5x3/4
the rotors are 12.19" in diameter and the same thickness as the /6 and early 911 rotors....
scotty914
Mar 20 2005, 09:46 AM
i just wonder how long the adapter will hold, i mean if you over heat the brakes one time wont that wood catch on fire
on a serious note, what was the total costs, we know 100 for the calibers, but how much are all of the other parts? last ? how did your weight compare with stock parts, did you gain or loose over all weight ?
Mueller
Mar 20 2005, 09:53 AM
you like the wooden mock up??
I was wondering when someone noticed it, hahahaha
rotors= $30 each
aluminum hat= $125 each (way too much, but you only have to buy it once and I know it can be made cheaper)
bolt kit for rotor= $15
I have not done a weight comparison yet, I'm going to try and do that Monday, my scale at home is not accurate enough.....
Mueller
Mar 20 2005, 09:56 AM
QUOTE (McMark @ Mar 20 2005, 08:28 AM) |
Now that's taking stock to a new level.
Would that put you in Ai for autocrossing since you still have the stock suspension. |
when I was depressed last night after the trial mock up and thought it wouldn't work at all, I mentioned it to my wife, she asked "why are they not like the stock brakes and why are they bigger???"
well, um, you see...oh never mind.....
scotty914
Mar 20 2005, 09:58 AM
so 500 including pads... ouch
scotty b
Mar 20 2005, 10:00 AM
I was going to get a set of 4 piston Porsche brakes AGAIN (put a set on the 944) but for the price difference I like what you have done! What are you putting on the rear? I picked up a set of Ford ?(don't remember the model of the car) front brakes for my CJ's rear, and may try them on a 914. They have the parking brake on the front of that particular model. Also have a set from a Lincon mark 4 for my Suburban rears. Thems is biguns, but are single piston floaters.
914efi
Mar 20 2005, 10:09 AM
I milled the 'mazda' off mine. I wish I didn't, it adds an outlaw flair and might get the purists really pissed.
boxstr
Mar 20 2005, 10:14 AM
ZOOM ZOOM.....
CCLINBASMATI
fiid
Mar 20 2005, 12:08 PM
Wow mike. That's awesome. Good job!
neo914-6
Mar 20 2005, 12:15 PM
QUOTE |
ZOOM ZOOM..... CCLINBASMATI |
Nice work Mike, nothing wrong with newer & cheaper or just being different! After all the R&D and testing, will you market adapters?
Mueller
Mar 20 2005, 12:19 PM
QUOTE (Neo914 @ Mar 20 2005, 11:15 AM) |
QUOTE | ZOOM ZOOM..... CCLINBASMATI |
Nice work Mike, nothing wrong with newer & cheaper or just being different! After all the R&D and testing, will you market adapters? |
I don't see a market for this at all...too odd ball of a combo and kinda pricey.....I'm pretty sure it'll work on a 911 strut as well, but even then, not much of a market...no big deal, I built these for myself
michel richard
Mar 20 2005, 03:35 PM
QUOTE (Mueller @ Mar 20 2005, 07:37 AM) |
Michel,
calipers came from '86 to '90 or '91 turbo RX-7, 2 different calipers came on those cars, one being this one, the other one a cast iron 2 piston caliper, I bought these for $50 each fully rebuilt (minus the pads), another club member here has bought a bunch at the pick-n-pull autosalvage places for about $15 a pop.
the pads cover the disc very nicely (too much at the OD, but that is taken car of now)
the adapter is on a 3" spacing /4 strut, basic dimensions of the adapter are 7x1.5x3/4
the rotors are 12.19" in diameter and the same thickness as the /6 and early 911 rotors.... |
Thanks
Andyrew
Mar 20 2005, 03:51 PM
Ya... I saw the wood, lol
Lookin good!
I need to talk to you about making some "adapters/spacers".....
Really, I like the look your giving that car!
Andrew
soloracer
Mar 20 2005, 05:19 PM
I own a 1987 RX7 Turbo as do several of my friends. The funny thing is we all agree that the braking is the worst thing about the car. We've been looking for a brake upgrade for our cars and Porsche was one of the makes we were researching for parts. Guess we'll have to strike stock "914" brakes off the list...
Bleyseng
Mar 20 2005, 08:43 PM
Big diff between the NA and Turbo brakes IIRC on the 88-91 RX7's. Looks like the ones on Blair's Turbo2 car to me. Who needs brakes with all that boost!!!
Geoff
ovilla
Mar 21 2005, 12:50 AM
Mueller - Great job on the set up. Definitely grind down the Mazda script and then order a set of Porsche vinyl stickers with Porsche lettering. Also, just curious, why worry about the overhang? Isn't the rotor thicker than both of the pads? In other words wouldn't the overhang material from each pad not touch the other pad anyway?
Mueller
Mar 21 2005, 12:10 PM
QUOTE (soloracer @ Mar 20 2005, 04:19 PM) |
I own a 1987 RX7 Turbo as do several of my friends. The funny thing is we all agree that the braking is the worst thing about the car. We've been looking for a brake upgrade for our cars and Porsche was one of the makes we were researching for parts. Guess we'll have to strike stock "914" brakes off the list... |
this setup is close to the 944 Turbo combo, except I'll have a larger diameter rotor and an aluminum hat to help shed the heat.....for me, I think this will work out fine, it's got to be as good or better than most setups currently being run on 914s...
QUOTE |
Also, just curious, why worry about the overhang? Isn't the rotor thicker than both of the pads? In other words wouldn't the overhang material from each pad not touch the other pad anyway? |
You are correct, with the rotor being so thick, the pads could never touch each other due to the overhang.....I've talked to a few brake engineers...as with everything, they had different views on the overhang...a few didn't like the overhang and felt that the rotor wouldn't cool down properly and a few others felt it was no big deal...
For me, the over hang is very minimal and a quick pass on my bench grinder takes care of it and I still have maximum pad coverage on the rotor...
Mueller
Sep 6 2005, 02:03 AM
QUOTE (Andyrew @ Mar 20 2005, 02:51 PM) |
Ya... I saw the wood, lol |
no more wood
started working on the real part today....will have to finish it once I get back from vacation in a week+
914efi
Sep 6 2005, 10:05 AM
Are you using larger wheels? When I did this I welded new mounts on the struts because I did not think the calipers would clear by using adapters such as you show.
Mueller
Sep 6 2005, 10:12 AM
QUOTE (914efi @ Sep 6 2005, 09:05 AM) |
Are you using larger wheels? When I did this I welded new mounts on the struts because I did not think the calipers would clear by using adapters such as you show. |
yep, larger wheels...17" and larger diameter rotors, 12.25" instead of 11"
a 15" stock 4-lug Fuchs "almost" fits with the a wheel spacer added....if I ground down some of the ribs on the caliper, I think it would work...no big deal, but I'll have to figure something out for a spare and a second set of rims (don't want another set of Revolutions, too heavy for auto-x, but I don't mind them on the street)
Brian Mifsud
Sep 6 2005, 10:53 AM
Hey Mike,
Spare is something you should take seriously. I put Mustang Cobra (13" rotors) on my Mustang GT. I had bought the 17' rim option on new purchase, but the spare was stock for the GT and V6 and won't clear the 13" rotor/caliper combination.
When I blew out a sidewall on a front tire, I had to do this ridiculous balancing act of lifting the front, remove flat, shove the wheel under the car to block it up, then go jack up the rear to move the rear forward, then put spare on rear..
Ford makes a 17" spare for the Cobra, but they are hard to get because all the Cobra drag racers buy them up to use as lightweight (aluminum) front skinnies...
Maybe a redrilled Porsche 16" spare?
phantom914
Sep 6 2005, 11:46 AM
Mike,
What are the piston diameters on these calipers?
Andrew
Mueller
Sep 6 2005, 12:30 PM
QUOTE (phantom914 @ Sep 6 2005, 10:46 AM) |
Mike,
What are the piston diameters on these calipers?
Andrew |
4 X 35mm or 36mm......
The little "hump" underneath the MAZDA cannot be removed, it is for the fluid to move from one piston to the other...oh well
Brian, yea, I figured for the time being I'd do the same thing as you did on your 'stang and play musical tires
One good thing about all 4 tires and rims being the same size.........
Andyrew
Sep 6 2005, 02:53 PM
Looking good!!
Took a while though... lol
Bet lots of projects... Ehem, I no nothing about multiple projects...
Mueller
Sep 6 2005, 05:04 PM
QUOTE (Andyrew @ Sep 6 2005, 01:53 PM) |
Looking good!!
Took a while though... lol
Bet lots of projects... Ehem, I no nothing about multiple projects... |
yea, kind of embarrasing for it to take this long
the final part should look like this...now I have to get McMark to get his anodizing kit working
McMark
Sep 6 2005, 10:18 PM
It's ready to go as soon as I get some battery acid. I've even got "smoke" dye to use, but you can order your own dye.
Kevin@ojai.net
Sep 7 2005, 12:27 AM
Mike,
Why didn't you finish the part? Didn't want to write extra lines of code to do the pockets? It wouldn't have taken up too much more machine time when it was already fixtured and located...
-Kevin
Mueller
Sep 7 2005, 09:26 AM
QUOTE (Kevin@ojai.net @ Sep 6 2005, 11:27 PM) |
Mike, Why didn't you finish the part? Didn't want to write extra lines of code to do the pockets? It wouldn't have taken up too much more machine time when it was already fixtured and located...
-Kevin |
I did that part manually on the mill, I'm having problems with the stepper motors stalling every so often while taking cuts, I "think" it's due to me running them at half winding or it's a setup problem with the computer.
andys
Sep 7 2005, 09:46 AM
QUOTE (Mueller @ Mar 20 2005, 07:53 AM) |
you like the wooden mock up??
I was wondering when someone noticed it, hahahaha
rotors= $30 each aluminum hat= $125 each (way too much, but you only have to buy it once and I know it can be made cheaper) bolt kit for rotor= $15
I have not done a weight comparison yet, I'm going to try and do that Monday, my scale at home is not accurate enough..... |
Say Mike,
Very nice and ingenious! Now, you didn't go with the Wilwood four pot's why? At just under $100 each (brand spanking new), seems they would have been a viable alternative (and lighter as well). Also, lots of pad compounds are available. On the plus side, those Wilwood rotors that you have are really inexpensive.
I have '89 Carrera calipers for mine, but am starting to wish I had gone with the Wilwood's. Those Carrera calipers weight a ton!
Andy
Aaron Cox
Sep 7 2005, 09:48 AM
andy - give us a link to the wilwoods you mention
BIGKAT_83
Sep 7 2005, 10:44 AM
Aaron I got these wilwood forged superlights for $103 each shipped to me. They are almost a bolt on for 3.5" struts.
Wilwood brakesBob
Mueller
Sep 7 2005, 01:01 PM
QUOTE (andys @ Sep 7 2005, 08:46 AM) |
Say Mike,
Very nice and ingenious! Now, you didn't go with the Wilwood four pot's why? At just under $100 each (brand spanking new), seems they would have been a viable alternative (and lighter as well). Also, lots of pad compounds are available. On the plus side, those Wilwood rotors that you have are really inexpensive.
Andy |
ummmm, stupidity I guess
I looked at the Wilwoods and even printed out 1:1 side and front profiles of them to layout against the /4 struts. Nothing seemed to that well at the time. If you notice the picture with the rotor, it is actually bolted "backwards" for 2 reasons...1st, the larger OD will clear the a-arm and 2nd, it allows me to use a simpler design adapter.
Now that I figured out that I could (and have to) move the rotor the direction I did, a few of the Wilwood calipers would have worked..oh well, live and learn.
The RX-7 calipers do have a few benifits such as cheaper pads than the Wilwoods and dust shields.
If I was to do it again, I'd go with Wilwoods and i still might for the rear brakes....still deciding if I'll go vented or stay solid rotor in the rear.
Bob, I have /4 struts which have the 3" spacing
Downunderman
Sep 7 2005, 01:13 PM
Mike,
Are the Mazda calipers aluminium or cast iron??
How
BIGKAT_83
Sep 7 2005, 01:30 PM
Mike the strut in the picture is a 3" 911 strut that I modified for the 3.5"brake caliper.
Bob
Mueller
Sep 7 2005, 02:47 PM
QUOTE (Howard R @ Sep 7 2005, 12:13 PM) |
Mike,
Are the Mazda calipers aluminium or cast iron??
How |
Aluminum...I can get a weight for them in a week or so....
Bob,
I didn't want to modify the strut, that is why no welding of a special bracket like 914efi did to his install.
Certain items I like to keep "bolt-on" instead of needing to have special fab skills like welding and such...I hope I never need to replace a strut, but if I did, it would go together easier and quicker knowing I don't have to have a spare custom fab'd strut or that I have to put one together...goofy thinking considering I have "custom" adapters, hahaha
I'm sure your install looks better, the adapters are kinda Mickey Mouse
Qarl
Sep 7 2005, 03:14 PM
When I read the thread title, I thought...
Sounds like Sir Mix a Lot...
I've got big Brakes, and I cannot lie.
You other teeners can't deny.
When I get on the street with my itty bitty car
and hit the twisties at a pace
I get SPRUNG!
andys
Sep 7 2005, 05:31 PM
QUOTE (Aaron Cox @ Sep 7 2005, 07:48 AM) |
andy - give us a link to the wilwoods you mention |
Aaron,
Here's a couple of under $100 Wilwood calipers:
http://www.pitstopusa.com/SearchResult.asp...CategoryID=3659
http://www.pitstopusa.com/SearchResult.asp...CategoryID=4478
These billet ones are $101
http://www.stockcarproducts.com/brakes7.htm
Andy
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