Andy Hollis' One Lap Miata (K24 Honda power)
03-18-2015, 08:15 AM
#84
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Not happy with the rears at the moment. These are base calipers spaced out to Sport dimensions using the MTuned bracket that 949 carries. Rotor is a two-piece DBA setup that Goodwin carries, and has same dimensions as Sport. It weighs the same as the non-Sport one-piece, so I suspect it is about 2 lbs lighter per side than the Sport one-piece.
The part I am unhappy with is the dangling of the parking brake. These brackets rotate the caliper CCW abou 15 degrees and the ebrake gets pointed down quite a bit. In fact, the instructions say to loosen the chassis mount for the cable when installing. I had to leave it unattached.
I haven't done the other side yet, as I am contemplating the situation. If I bend the bracket that attaches the cable to the caliper, it distorts the pull angle. Could probably get away with a little, but it needs a fair bit.
I have to believe others have solved this. In addition, the V4 Goodwin kits have similar rear brackets, so I'd expect those folks to also have dealt with this.
Anybody?
The part I am unhappy with is the dangling of the parking brake. These brackets rotate the caliper CCW abou 15 degrees and the ebrake gets pointed down quite a bit. In fact, the instructions say to loosen the chassis mount for the cable when installing. I had to leave it unattached.
I haven't done the other side yet, as I am contemplating the situation. If I bend the bracket that attaches the cable to the caliper, it distorts the pull angle. Could probably get away with a little, but it needs a fair bit.
I have to believe others have solved this. In addition, the V4 Goodwin kits have similar rear brackets, so I'd expect those folks to also have dealt with this.
Anybody?
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03-18-2015, 08:29 AM
#85
I have the same situation with the MTuned brackets, the handbrake cables are very close to the lowest point (maybe 1/2" above).
As usual I have done nothing about it, few things stand up enough on track to catch them. 3-4 years running like this so far (I don't remember when i changed rotor size in the rear).
But as everything can be a bit different, are your cables hanging below the lowest point?
As usual I have done nothing about it, few things stand up enough on track to catch them. 3-4 years running like this so far (I don't remember when i changed rotor size in the rear).
But as everything can be a bit different, are your cables hanging below the lowest point?
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03-18-2015, 09:03 AM
#87
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Not the piston bore ratio I want. If I was to go that route, I'd just swap to larger-bore OE rear sport calipers and ditch the brackets.
Further, the FM ebrake is very light duty. I use my ebrake heavily when towing. Stabilizes the car quite well. I can always tell when I have forgotten to put it on.
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03-18-2015, 09:08 AM
#88
Interesting on the towing part. Yeah their ebrake is very light duty and thats really the only solution unfortunately. I've tried to come up with a way to improve on it and nothing else fits.
You dont like piston ratio between the front and back even with the 11.75 fronts? Math I did makes it seem better than the stock caliper because you wont need to use as skewed of a pad mu to get the right brake balance when trail braking. The sport would have been my caliper pick if the FM LBBK didnt exist if the sport caliper had the same brake pad support as the normal caliper.
You dont like piston ratio between the front and back even with the 11.75 fronts? Math I did makes it seem better than the stock caliper because you wont need to use as skewed of a pad mu to get the right brake balance when trail braking. The sport would have been my caliper pick if the FM LBBK didnt exist if the sport caliper had the same brake pad support as the normal caliper.
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03-18-2015, 09:36 AM
#89
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I have the same situation with the MTuned brackets, the handbrake cables are very close to the lowest point (maybe 1/2" above).
As usual I have done nothing about it, few things stand up enough on track to catch them. 3-4 years running like this so far (I don't remember when i changed rotor size in the rear).
But as everything can be a bit different, are your cables hanging below the lowest point?
As usual I have done nothing about it, few things stand up enough on track to catch them. 3-4 years running like this so far (I don't remember when i changed rotor size in the rear).
But as everything can be a bit different, are your cables hanging below the lowest point?
I think I will go ahead and do the other side...and hope.
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03-18-2015, 10:24 AM
#90
)
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03-18-2015, 01:15 PM
#91
Not happy with the rears at the moment. These are base calipers spaced out to Sport dimensions using the MTuned bracket that 949 carries. Rotor is a two-piece DBA setup that Goodwin carries, and has same dimensions as Sport. It weighs the same as the non-Sport one-piece, so I suspect it is about 2 lbs lighter per side than the Sport one-piece.
The part I am unhappy with is the dangling of the parking brake. These brackets rotate the caliper CCW abou 15 degrees and the ebrake gets pointed down quite a bit. In fact, the instructions say to loosen the chassis mount for the cable when installing. I had to leave it unattached.
I haven't done the other side yet, as I am contemplating the situation. If I bend the bracket that attaches the cable to the caliper, it distorts the pull angle. Could probably get away with a little, but it needs a fair bit.
I have to believe others have solved this. In addition, the V4 Goodwin kits have similar rear brackets, so I'd expect those folks to also have dealt with this.
Anybody?
The part I am unhappy with is the dangling of the parking brake. These brackets rotate the caliper CCW abou 15 degrees and the ebrake gets pointed down quite a bit. In fact, the instructions say to loosen the chassis mount for the cable when installing. I had to leave it unattached.
I haven't done the other side yet, as I am contemplating the situation. If I bend the bracket that attaches the cable to the caliper, it distorts the pull angle. Could probably get away with a little, but it needs a fair bit.
I have to believe others have solved this. In addition, the V4 Goodwin kits have similar rear brackets, so I'd expect those folks to also have dealt with this.
Anybody?
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03-18-2015, 01:48 PM
#92
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An alternate solution is using OEM Sport carriers with either sport calipers (1.375" piston area) or 94-00 calipers (1.25" piston area). I believe this is what we did on the few cars we ran Sport rear rotors on. In restrospect, that might have been a simpler solution for you.
So you are saying that either caliper will fit on either knuckle...and that the knuckle is the determining factor on the rotor spacing?
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03-18-2015, 02:17 PM
#94
Just researched this via parts fiche. Looks like the knuckles are indeed different between Sport and non-Sport. (NO75-26-28X/29X vs NA75-26-28X/29X)
So you are saying that either caliper will fit on either knuckle...and that the knuckle is the determining factor on the rotor spacing?
So you are saying that either caliper will fit on either knuckle...and that the knuckle is the determining factor on the rotor spacing?
Sport pads if you put NA8 calipers on Sport carriers. M-Tuned adapters, NA8 or NA8 depending on carrier used.
The caliper carrier, or bracket if you will, is different between Sport and standard, but the lug spacing and offset are the same. The pin centers, diameter and offset on the two calipers are the same. Ergo, one can fit Sport carriers (brackets) with non Sport calipers onto non Sport knuckles.
We have tried a bunch of different combos. Running 11.75's up front with Sport rear rotors and minimal aero, NA8 calipers. With huge downforce, porky car (V8), or 275's, the bigger piston Sport caliper starts to give better balance.
No idea why the Sport knuckle has a different P/N than the base. There was only what, one year of overlap AFAIK.
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03-18-2015, 02:34 PM
#95
Sport calipers can be made to work on non sport brackets as well. Just a little grinding on the backing plate of the pad to clearance the caliper. It is better to use the larger rotor, but it gives more options.
I did this mod as I run RPF1's, and needed more rear bias.
I did this mod as I run RPF1's, and needed more rear bias.
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03-18-2015, 06:32 PM
#96
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^Same here.
I'm running the rear sport caliper on the non-sport carrier. Didn't like the stock bias in the rain, so I upped the rear pistons. Stops faster in the dry (I measured back to back) and wet, and is much safer.
I still have the carriers for the sport rotors, should I choose to go that path in the future, but currently, it's nicely balanced, and does the job.
I'm running the rear sport caliper on the non-sport carrier. Didn't like the stock bias in the rain, so I upped the rear pistons. Stops faster in the dry (I measured back to back) and wet, and is much safer.
I still have the carriers for the sport rotors, should I choose to go that path in the future, but currently, it's nicely balanced, and does the job.
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03-23-2015, 04:38 AM
#98
To plumb the fuel line, we disconnected the first two mounting brackets and then carefully bent it around to the driver's side of the tunnel. We then added -6 AN hard-line fittings (5/16") to both the fuel line and injector rail, and connected those two with push-lock hose and fittings. That gives a little bit of slop for engine movement. Here's a good video on how to do this: http://www.anplumbing.com/page/16
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