My 300mm brake upgrade - Page 3

**DarkMx-6** · 2-12-08, 10:10

Yeah I have dealed with fred_lite before and he has been a fair stand up guy, Not only to me. (check the feed back thread) If he says something like that I would listen to him.

**Zach** · 2-12-08, 10:51

What a joke. I hate crackheads like that. Fred's a standup guy to do business with, buying and selling

**racer_smokm1** · 2-16-08, 22:58

not just for sales but information as well... Now what I want to know is when you redesign the bracket are you going to also do one to fit the 3000gt 4 piston calipers on there like someone suggested. if so i would be interested in a set of those. i am turning my probe into a autox and drag car and I think this would be an AWSOME upgrade. Anyone know if the fitment is the same from the telstar to the 1g probe and mx6?

**mx_masta** · 2-17-08, 2:40

Yes Telstar TX5 is the same as a 626 liftback. Eccept for the taillights, bumpers and dash. And some other options I think.

**fred_lite** · 2-17-08, 3:18

Quote:

Originally Posted by SABBAi

I'm still not happy with the amount of testing I've done with them. i.e. less than 300km's. I've been a bit weary about the pad over hang. Using a disc that is almost 40mm larger in diameter than stock means that there is about 3mm overhang at the peak of the radius. But the need to get a car up and running reliably for work is a higher priority at the moment.

If I do a group buy, my guess is that they wont sell in the numbers I need to get them done at a reasonable price, as there are people who want a pair for US$40. So why would I waste my time? Machining isn't free you know......

I would revise the design if I was to sell them anyway.

do all the testing you need.300km is far from enough.we talk about brake heres.would be nice to see some number and feedback on high heat and pression at the track.but probably with your new bracket.
keep us updated.another one on the list

fred

**SABBAi** · 2-17-08, 4:42

Thanks guys. I had no intentions on using the 3000GT 4 pots, as they're not easy to find here and I don't think that they would be much better that any other 4 pot out there. The sumitomo 4pots off an FD RX7 I tried to work with, but again mounting tabs off the calipers gave me troubles when trying to mount them.

To get around this I'd need to use a radial mount caliper. I have no issues with the stock/suby calipers. This is what I will be running with on the new bracket.

**mx_masta** · 2-17-08, 4:47

With the pad overhand you should get hold of a bendix catalouge and have a look at the pictorial reference pages.

Find a pad that has the same shape but to suit a larger diameter disc.
Then visually compare them to the MX6 pads for overall size.

Buy the cheapest set you can like the Ferroro Zero's just for test fitting.

P.S the offer still stands for the 3D model.
You will find it hard getting the machining done at a decent price without at least a proper drawing done.

And if you doubt my credentials (not saying that you do) I model and draw daily:
upto 153m3 mining truck bodies/ upto 10T tyre handlers/ upto 35m3 excavator buckets/ upto 120,000Lt water carts - with upto 500 parts/ etc, etc.

**SABBAi** · 2-17-08, 5:18

Been there and done that with the catalogue. I spent an afternoon down at the local brake shop looking at pads. the problem is that the pads for the GD are very short as is the bracket. There would need to be a lot of 'little adjustments' made to the backing plates. The closest I found was actually the Liberty (legacy) items. These are actually designed to be used on a 296mm rotor.

I looked into using the liberty brackets as well, and it comes close to working. The mounting points off the hub would need some modifying. The only problem is that the bracket would mount to close to the edge. Not enough material for it to mount to.

**SABBAi** · 2-17-08, 5:19

P.S. MX_Masta, no doubting your credentials.

**mx_masta** · 2-19-08, 15:20

Quote:

Not enough material for it to mount to.

You would then have to offset the holes for the liberty caliper.
Just like most caliper relocation brackets. Try a google search to see what I mean.

**SABBAi** · 2-19-08, 16:31

I am fully aware of offset brackets for brake upgrades. Let me explain the situation for you a little clearer. Machining 1.3mm off the mating face is not the issue. There is enough material thickness for this. The issue is that the mounting holes for the suby calliper bracket requires that the holes in the upright be brought out by 3mm from the centre of the hub and together 4mm. This leaves very little material around the radius edge of the hub mounts.

By redrilling the upright this much, leaves 4mm between the outer edge of the mounting tab and mounting hole. I’m not comfortable enough with this. It is not possible to rotate the calliper around a few degrees and make up a bracket to suit the rotation due to the mounting tabs foul on the calliper body.

This was also the case when trying to mount the numerous other callipers I’ve tried. Have I mentioned that the 4 pot sumitomo RX7 Series 4 calipers are a close fit, but would also require a disc with a size about 345mm? The issue? Mounting tabs. I’m beginning to wish I could find a cheap calliper with radial mounts.

Not sure how much Dutch’s setup cost with the Wilwoods, but I may even go down this path.

**mx_masta** · 2-20-08, 3:26

Quote:

It is not possible to rotate the calliper around a few degrees and make up a bracket to suit the rotation due to the mounting tabs foul on the calliper body.

Thats exactly what I meant and I see the problem now. One of the mounting ears will touch the caliper cylinder.
Though if a had a pair of the suby calipers I think I could still come up with something.
(Would be a very tight fit though!)

**SABBAi** · 2-28-08, 2:26

Quick update.

I've had the rotors and brackets fitted to my daily now for close to 3000km's, with no real issues at all. The rotor thickness initially caused some pad drag but that has cleared up.

I've given the car to a few people to trial the brakes from another persons perspective. 1 drives a GD, the other 2 do not. All 3 have mentioned that it seems to put up fast, but will lock both the fronts if you are heavy on the pedal.

I haven't done any braking distance tests or heat comparison tests as yet, however, I have done some 'spirited' driving as some preliminary testing. I've pushed to the point of a hard feeling pedal and slight inner wheel lock ups over rough roads through corners.

anyways, just some pics of them fitted to the car.

**CraZyOne** · 2-28-08, 3:20

Do bigger rotors matter if you can't find calipers and pads to utilise the bigger surface area?

**DarkMx-6** · 2-28-08, 9:28

yes because the more surface area you have the more time the brakes have to cool down, before going threw the pads again.

2-12-08, 10:10	#31 (permalink)
DarkMx-6 Join Date: Jun 2005 Location: Keene, TX, USA Age: 22 iTrader: (3)	Yeah I have dealed with fred_lite before and he has been a fair stand up guy, Not only to me. (check the feed back thread) If he says something like that I would listen to him.
	Parting out 1g mx6 DX

2-16-08, 22:58	#33 (permalink)
racer_smokm1 Join Date: Aug 2005 Location: Portland, OR, USA Age: 22 iTrader: (3)	not just for sales but information as well... Now what I want to know is when you redesign the bracket are you going to also do one to fit the 3000gt 4 piston calipers on there like someone suggested. if so i would be interested in a set of those. i am turning my probe into a autox and drag car and I think this would be an AWSOME upgrade. Anyone know if the fitment is the same from the telstar to the 1g probe and mx6?
	89 Probe GT soon to be 89 Probe FE3... then comes the big pppssssttt

2-17-08, 2:40	#34 (permalink)
mx_masta Join Date: Dec 2006 Location: perth, Australia Age: 30 iTrader: (0)	Yes Telstar TX5 is the same as a 626 liftback. Eccept for the taillights, bumpers and dash. And some other options I think.
	VF12 - VJ11 hybrid http://www.mx6.com/forums/1g-mx6-for...ic-inside.html 5 1/4" VDO splits in custom door trims http://www.mx6.com/forums/1g-mx6-gen...cs-inside.html, 12" sub in custom boot/trunk http://www.mx6.com/forums/1g-mx6-gen...cs-inside.html, 2.5" cat back, 18"x12"x3" FMIC.

2-17-08, 4:42	#36 (permalink)
SABBAi Join Date: Apr 2004 Location: Melbourne, Australia iTrader: (1)	Thanks guys. I had no intentions on using the 3000GT 4 pots, as they're not easy to find here and I don't think that they would be much better that any other 4 pot out there. The sumitomo 4pots off an FD RX7 I tried to work with, but again mounting tabs off the calipers gave me troubles when trying to mount them. To get around this I'd need to use a radial mount caliper. I have no issues with the stock/suby calipers. This is what I will be running with on the new bracket.
	Teh Telstar can NEVAH lose!

2-17-08, 4:47	#37 (permalink)
mx_masta Join Date: Dec 2006 Location: perth, Australia Age: 30 iTrader: (0)	With the pad overhand you should get hold of a bendix catalouge and have a look at the pictorial reference pages. Find a pad that has the same shape but to suit a larger diameter disc. Then visually compare them to the MX6 pads for overall size. Buy the cheapest set you can like the Ferroro Zero's just for test fitting. P.S the offer still stands for the 3D model. You will find it hard getting the machining done at a decent price without at least a proper drawing done. And if you doubt my credentials (not saying that you do) I model and draw daily: upto 153m3 mining truck bodies/ upto 10T tyre handlers/ upto 35m3 excavator buckets/ upto 120,000Lt water carts - with upto 500 parts/ etc, etc.
	VF12 - VJ11 hybrid http://www.mx6.com/forums/1g-mx6-for...ic-inside.html 5 1/4" VDO splits in custom door trims http://www.mx6.com/forums/1g-mx6-gen...cs-inside.html, 12" sub in custom boot/trunk http://www.mx6.com/forums/1g-mx6-gen...cs-inside.html, 2.5" cat back, 18"x12"x3" FMIC.

2-17-08, 5:18	#38 (permalink)
SABBAi Join Date: Apr 2004 Location: Melbourne, Australia iTrader: (1)	Been there and done that with the catalogue. I spent an afternoon down at the local brake shop looking at pads. the problem is that the pads for the GD are very short as is the bracket. There would need to be a lot of 'little adjustments' made to the backing plates. The closest I found was actually the Liberty (legacy) items. These are actually designed to be used on a 296mm rotor. I looked into using the liberty brackets as well, and it comes close to working. The mounting points off the hub would need some modifying. The only problem is that the bracket would mount to close to the edge. Not enough material for it to mount to.
	Teh Telstar can NEVAH lose!

2-17-08, 5:19	#39 (permalink)
SABBAi Join Date: Apr 2004 Location: Melbourne, Australia iTrader: (1)	P.S. MX_Masta, no doubting your credentials.
	Teh Telstar can NEVAH lose!

2-19-08, 16:31	#41 (permalink)
SABBAi Join Date: Apr 2004 Location: Melbourne, Australia iTrader: (1)	I am fully aware of offset brackets for brake upgrades. Let me explain the situation for you a little clearer. Machining 1.3mm off the mating face is not the issue. There is enough material thickness for this. The issue is that the mounting holes for the suby calliper bracket requires that the holes in the upright be brought out by 3mm from the centre of the hub and together 4mm. This leaves very little material around the radius edge of the hub mounts. By redrilling the upright this much, leaves 4mm between the outer edge of the mounting tab and mounting hole. I’m not comfortable enough with this. It is not possible to rotate the calliper around a few degrees and make up a bracket to suit the rotation due to the mounting tabs foul on the calliper body. This was also the case when trying to mount the numerous other callipers I’ve tried. Have I mentioned that the 4 pot sumitomo RX7 Series 4 calipers are a close fit, but would also require a disc with a size about 345mm? The issue? Mounting tabs. I’m beginning to wish I could find a cheap calliper with radial mounts. Not sure how much Dutch’s setup cost with the Wilwoods, but I may even go down this path.
	Teh Telstar can NEVAH lose!

2-28-08, 2:26	#43 (permalink)
SABBAi Join Date: Apr 2004 Location: Melbourne, Australia iTrader: (1)	Quick update. I've had the rotors and brackets fitted to my daily now for close to 3000km's, with no real issues at all. The rotor thickness initially caused some pad drag but that has cleared up. I've given the car to a few people to trial the brakes from another persons perspective. 1 drives a GD, the other 2 do not. All 3 have mentioned that it seems to put up fast, but will lock both the fronts if you are heavy on the pedal. I haven't done any braking distance tests or heat comparison tests as yet, however, I have done some 'spirited' driving as some preliminary testing. I've pushed to the point of a hard feeling pedal and slight inner wheel lock ups over rough roads through corners. anyways, just some pics of them fitted to the car.
	Teh Telstar can NEVAH lose!

2-28-08, 3:20	#44 (permalink)
CraZyOne Join Date: Oct 2002 Location: Melbourne, Australia Age: 28 iTrader: (1)	Do bigger rotors matter if you can't find calipers and pads to utilise the bigger surface area?

2-28-08, 9:28	#45 (permalink)
DarkMx-6 Join Date: Jun 2005 Location: Keene, TX, USA Age: 22 iTrader: (3)	yes because the more surface area you have the more time the brakes have to cool down, before going threw the pads again.
	Parting out 1g mx6 DX