After track day lots of grinding!
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
After track day lots of grinding!
So it’s def the pad...but how can the pad go like this(as per picture)? The pistons look like they are even.
Also these are the upgraded brakes on the front, anyone know the pad size I will need?
Cheers
Sent from my iPhone using Tapatalk
Also these are the upgraded brakes on the front, anyone know the pad size I will need?
Cheers
Sent from my iPhone using Tapatalk
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Former Member
- Posts: 5849
- Joined: Mon Apr 11, 2016 1:26 pm
- RX-8: 231
- Colour: Custom
- Location: West Sussex
- Has thanked: 54 times
- Been thanked: 367 times
Re: After track day lots of grinding!
Twin piston calipers should have a smaller piston on the leading end of the pad, and a larger piston on the trailing end of the pad. I don't know if these calipers have unequal piston sizes? And I'm not sure if the calipers can be mounted upside down or on the wrong side of the car? Things to check, anyway.
-
- Former Member
- Posts: 3835
- Joined: Fri Aug 09, 2013 2:17 pm
- RX-8: R3
- Colour: Sparkling Black
- Location: Nottingham
- Has thanked: 41 times
- Been thanked: 109 times
Re: After track day lots of grinding!
If this is on one side only,then maybe a piston has partially seized
2008 Sparkling Black R3 ●Japspeed Sportcat & Toyo Catback ● Drilled/grooved discs ● Simota Induction Kit ● D585 Coils ● Braided S/S lines ● Polished Engine Bay ● DRL's ● 2011 Spec Gearbox ●LED Side & fogs ● Calibre GT-R rims ● Michelin Pilot Sport 3 255/35 19 ● Nissan GTR spoiler ● RacingBeat ARB's ● Tein coilovers ● BHR motor mounts ● Amemiya Grille ● CL RC5 pads
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
Re: After track day lots of grinding!
Need to strip and check...thankfully this was my last track day this year
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Club Member
- Posts: 28284
- Joined: Sun Jan 29, 2006 10:04 pm
- Location: Cheltenham
- Has thanked: 2567 times
- Been thanked: 940 times
Re: After track day lots of grinding!
Looks like those top pistons are not applying the same pressure or the lower pistons are not "pulling back" when the pressure is released, but those are guesses really? I suggest you send the photo to the caliper and pad supplier asking for their opinion.
Rotary History;
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
Re: After track day lots of grinding!
Will do
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
- These users thanked the author rameshr for the post:
- ChrisHolmes (Sun Dec 16, 2018 9:02 pm)
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Former Member
- Posts: 47
- Joined: Mon Oct 11, 2010 11:37 am
- Has thanked: 0
- Been thanked: 5 times
Re: After track day lots of grinding!
This is only normally needed in 6+ piston calipers. A lot of 4 piston calipers have the same sized piston top and bottom.PeteH wrote: ↑Sun Dec 16, 2018 7:32 pmTwin piston calipers should have a smaller piston on the leading end of the pad, and a larger piston on the trailing end of the pad. I don't know if these calipers have unequal piston sizes? And I'm not sure if the calipers can be mounted upside down or on the wrong side of the car? Things to check, anyway.
I would guess somethings not moving freely. Time to strip and clean them up. Don't push the pistons back in with them looking like that, you may damage the bore and you'll quickly get a sticking caliper. A quick scrub with a toothbrush and soapy water will sort them. Is that the original set of pads you had with the brakes?
- These users thanked the author Freaky for the post:
- ChrisHolmes (Sun Dec 16, 2018 9:38 pm)
-
- Club Member
- Posts: 28284
- Joined: Sun Jan 29, 2006 10:04 pm
- Location: Cheltenham
- Has thanked: 2567 times
- Been thanked: 940 times
Re: After track day lots of grinding!
Aha! Forgot you were on here!
Rotary History;
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
Re: After track day lots of grinding!
Yep these are original pads, I only use the car for track days
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Former Member
- Posts: 403
- Joined: Wed Jul 04, 2012 10:13 am
- RX-8: 231
- Colour: Brilliant Black
- Location: Galway, Ireland
- Has thanked: 16 times
- Been thanked: 4 times
Re: After track day lots of grinding!
The top pistons look like they have no dust boots, is this correct?
-
- Former Member
- Posts: 47
- Joined: Mon Oct 11, 2010 11:37 am
- Has thanked: 0
- Been thanked: 5 times
Re: After track day lots of grinding!
Neither top or bottom pistons have dust boots on these calipers. They run stainless steel pistons.
-
- Former Member
- Posts: 3020
- Joined: Sun May 06, 2012 3:32 pm
- RX-8: 231
- Colour: Velocity Red
- Location: Blazingstoke
- Has thanked: 11 times
- Been thanked: 35 times
Re: After track day lots of grinding!
Yeah, that's the way these calipers work - you'll notice there's no groove on the piston for the dust boots to seat into. All you get with these ones is the square cut seals. I remember them well, because I helped install them. Pretty sure they're the right way up, bleed screws at the top of the caliper, and there were no obvious issues on the day apart from the fact it was bloody freezing. Freaky's advice will be the stuff to follow, seeing as he makes and supplies the kits. He can advise the pad code for replacements as well
Edit: he beat me to it
Edit: he beat me to it
To Do List: HKS CAMP2 install; cruise control; new exhaust; detail paintwork, possible respray
Done: Hayward Rotary rebuild and stage 2 port; Racing Beat ARBs, adjustable front droplinks, ram air intake and lightened flywheel; Exedy stage 1 clutch; Eibach Pro-Kit lowering springs; Koyo radiator; heated front screen; EBC redstuff pads all round
Done: Hayward Rotary rebuild and stage 2 port; Racing Beat ARBs, adjustable front droplinks, ram air intake and lightened flywheel; Exedy stage 1 clutch; Eibach Pro-Kit lowering springs; Koyo radiator; heated front screen; EBC redstuff pads all round
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
Re: After track day lots of grinding!
It was a cold day! I remember it well lol. I have ordered pads, now need to find the time to strip and clean
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Former Member
- Posts: 1190
- Joined: Sun Mar 11, 2012 11:58 pm
- Colour: Custom
- Has thanked: 30 times
- Been thanked: 92 times
Re: After track day lots of grinding!
Give the pistons a good clean up and make sure they're moving well - the open piston calipers do tend to need a bit of maintaining when it comes to the pistons and road salt.
Loads of 4-pots have differential pistons - the Brembo's on my daily do - but they look like a Hispec or Wilwood aftermarket kit, which generally don't unless you're going for the bigger calipers. Looking at that you're probably going to need new discs after running the steel backing pad on it too - the right side looks notably thinner.
It's certainly somewhat strange as with equal-sized pistons you'd expect the taper wear to be worse at the top than the bottom - perhaps the pads were a touch large and binding on the stainless sliders, or the spring clip is deformed and holding the pad on slightly at that end.
Loads of 4-pots have differential pistons - the Brembo's on my daily do - but they look like a Hispec or Wilwood aftermarket kit, which generally don't unless you're going for the bigger calipers. Looking at that you're probably going to need new discs after running the steel backing pad on it too - the right side looks notably thinner.
It's certainly somewhat strange as with equal-sized pistons you'd expect the taper wear to be worse at the top than the bottom - perhaps the pads were a touch large and binding on the stainless sliders, or the spring clip is deformed and holding the pad on slightly at that end.
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
Re: After track day lots of grinding!
Yea you are probably right, I do have spare discs I bought second hand. I was hoping these would not be damaged but it's safer to change them. Will take it to my mates where he has a garage and work on it over time.
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Former Member
- Posts: 5849
- Joined: Mon Apr 11, 2016 1:26 pm
- RX-8: 231
- Colour: Custom
- Location: West Sussex
- Has thanked: 54 times
- Been thanked: 367 times
Re: After track day lots of grinding!
Are you sure? I'm fairly confident that it's the leading edge of the pad that wear fastest, and that's the bottom with our rear mounted callipers.RenesisRaceBuggy wrote: ↑Tue Dec 18, 2018 5:05 pmwith equal-sized pistons you'd expect the taper wear to be worse at the top than the bottom
-
- Former Member
- Posts: 1190
- Joined: Sun Mar 11, 2012 11:58 pm
- Colour: Custom
- Has thanked: 30 times
- Been thanked: 92 times
Re: After track day lots of grinding!
My fault, I was assuming they were front mount like most production stuff, yes, probably just normal taper wear then, still worth checking the pistons move easily though.
Might be worth checking the pad compound too, taper wear like that can be accelerated if they're outside their temperature range as there's more pressure on the leading edge from the self-servoing effect.
Might be worth checking the pad compound too, taper wear like that can be accelerated if they're outside their temperature range as there's more pressure on the leading edge from the self-servoing effect.
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
Re: After track day lots of grinding!
These are M1144 which I thought was good for track use. Will try others later on.
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Club Member
- Posts: 28284
- Joined: Sun Jan 29, 2006 10:04 pm
- Location: Cheltenham
- Has thanked: 2567 times
- Been thanked: 940 times
Re: After track day lots of grinding!
1144 compound is great for track use and also for road, but like any pad compound they can be overheated with hard use and whilst you have upgraded the calipers and pads the discs are standard thickness and may struggle to dissipate any additional heat created by your harder use of the brakes.
Rotary History;
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
-
- Former Member
- Posts: 986
- Joined: Sat Jan 03, 2015 8:49 am
- RX-8: 231
- Colour: Galaxy Grey
- Location: New Malden, Surrey
- Has thanked: 2 times
- Been thanked: 9 times
Re: After track day lots of grinding!
Discs are drilled and grooved was hoping that would be enough to cool them?
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
Current
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
M3 E92
OLD Car
Half-Bridge Engine
Lightened Fly + Clutch
Whiteline ARB's + Droplinks
Brake Upgrade 4 pot front
AEM Intake
D969 Coils
BlackDiamond Disc + M1144 Pads
YellowSpeed Suspension
Dwell timers adjusted
Short Shifter
Braided Brake + Clutch Lines
-
- Club Member
- Posts: 28284
- Joined: Sun Jan 29, 2006 10:04 pm
- Location: Cheltenham
- Has thanked: 2567 times
- Been thanked: 940 times
Re: After track day lots of grinding!
No extra cooling from drillings and slots they are there to release gas from pads historically but today compounds don't "gas" like earlier compounds so dimples, through drilling and slots are largely cosmetic, now where is my steel helmet and flak jacket?
Rotary History;
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
-
- Former Member
- Posts: 4726
- Joined: Sun Jan 10, 2016 10:14 pm
- RX-8: 231
- Colour: Velocity Red
- Location: Leicestershire
- Has thanked: 265 times
- Been thanked: 359 times
Re: After track day lots of grinding!
Plain discs (obviously) have more mass and surface area to contact the pad with, so I'm led to believe that they do a better job of absorbing heat away from the pads and then dissipating it than archaic designs that are more aesthetic.
- These users thanked the author 13Black for the post:
- ChrisHolmes (Wed Dec 19, 2018 2:19 pm)
-= Rotormelon Money Pit Build of Tasteless Questionable Bodgery =-
Experimelon 183whp rebuild | Rotary Revs D585s | PZ Suspension | Hawk & Yellowstuff pads | Extra steering lock | Custom exhaust | Added rearward flames of glory | Unnecessarily repurposed ball gags-= Clicky click for build thread =-
-
- Former Member
- Posts: 5849
- Joined: Mon Apr 11, 2016 1:26 pm
- RX-8: 231
- Colour: Custom
- Location: West Sussex
- Has thanked: 54 times
- Been thanked: 367 times
Re: After track day lots of grinding!
Also, the bigger the pads the smaller the disc surface available to dissipate heat.
- These users thanked the author PeteH for the post:
- ChrisHolmes (Wed Dec 19, 2018 2:19 pm)
-
- Former Member
- Posts: 4726
- Joined: Sun Jan 10, 2016 10:14 pm
- RX-8: 231
- Colour: Velocity Red
- Location: Leicestershire
- Has thanked: 265 times
- Been thanked: 359 times
Re: After track day lots of grinding!
Are you trying to tell me that this isn't the most superior braker betterment?
You do not have the required permissions to view the files attached to this post.
-= Rotormelon Money Pit Build of Tasteless Questionable Bodgery =-
Experimelon 183whp rebuild | Rotary Revs D585s | PZ Suspension | Hawk & Yellowstuff pads | Extra steering lock | Custom exhaust | Added rearward flames of glory | Unnecessarily repurposed ball gags-= Clicky click for build thread =-