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Post by hoodedreeper on Jan 1, 2018 22:31:23 GMT
My Mk1 has been supercharged for 3 years and I upgraded the brakes before I fitted the conversion. I've currently got dimpled and grooved discs,Ferodo DS2500 pads and Millers Competition Fluid supplied by Freaky Parts.
The brakes have been good but are now suffering from fade. I know a lot of people will recommend decent discs/pads but you'll get a different answer each time.
I've been looking at Wilwoods,but will I just be spending money for the sake of it? I've heard mixed things about them, is it too much stopping power for my engine power? Ive read they lock up too easily?
If I stuck with the current set up, would it be worth trying Mintex pads?
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Post by atlex on Jan 1, 2018 22:51:58 GMT
Wilwoods (per the kit by Freakyparts) you mentioned.. I love the kit. I run it on my turbo car and it is excellent for the 200+BHP gets-into-trouble-fast range.
But it will mess with the wheels you can fit without spacing, you need a lot more space under
For example you need 16mm spacers on gen3 15x8 6ULs to safely clear the callipers. I ran like this last summer in scotland. did good.
Some Amerikin people save a bit and grind off the Wilwood logo on the dynalites to get a few mm more clearance!
( The only wheels I've tried that don't need any spacing out to fit on that kit are the Volk CE28N 15x7 +28. )
You could opt for the 1.8 Sports Big Brakes as per the mk2.5 1.8s. I've got these on the Aizawa car and the stopping is really spectacular for an OEM option - they are already overspec for the standard power cars already. Only downside is smaller set of pad options than the normal 1.6 or 1.8 setup since alot of racers stick with 1.6 and 1.8 and high quality pads.
( Reason I switched to them ? I had a mk2.5 and really loved the feel/safety so went with them again on the mk1 aizawa )
If you want an idea of what fits over these brakes ... I have done all the work already lol so guarantee the following fit fine:
949racing 6UL G3 15x8 +36
RS-Watanabe F8F 15x7 +36
Enkei Apache2s 15x8 +25
Sprint Hart CP 15x6.5 +35
Stoptech make some good replacement disks for these 1.8 Sports Big Brakes callipers.
Pad options-wise worth pinging Rodders, even if you stick with the current setup. Infact, that'd be the first place I'd look.
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Post by atlex on Jan 1, 2018 22:55:38 GMT
And now everyone on this forum knows I spend too much time looking at, and hoarding rims, lol  |
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Post by hoodedreeper on Jan 1, 2018 22:57:34 GMT
I've got a friend whos got Wilwoods fitted, I could ask to trial fit one of each of my wheels to check clearance. I've already got 25mm spacers on the rear, can't have any on the fronts because the 9j wheels catch the fibreglass arches. I PM'd Rodders about pads before and never got a reply |
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Post by FFS Corders on Jan 2, 2018 9:32:20 GMT
Rodders pads or axxis ULT are fantastic options if you stay OEM caliper and discs
I think it's best to email Rodders or call him as I don't think he uses forums so much at the moment
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Post by hoodedreeper on Jan 3, 2018 20:06:16 GMT
I got an email response from Rodders. His pads are £60 per axle.
So that makes them £40 more than the DS2500 selection from Mtec (using same discs as I am now)
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Post by Horney on Jan 3, 2018 20:56:22 GMT
Rodders pads every time. Use them in my road MX5s and we use them in all the race cars. Never been able to make a set fade even from multiple hard stops from 100mph+. I wish his pads came in Mini fitment.
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Post by FFS Corders on Jan 3, 2018 21:58:15 GMT
Just fit mx5 brakes to the goat  |
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Post by myothercarsa2cv on Jan 3, 2018 23:05:57 GMT
Have you considered the Freaky Parts big brake disc adapters? Same calipers, bigger discs?
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Post by atlex on Jan 3, 2018 23:18:06 GMT
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Post by wannabe on Jan 4, 2018 0:17:18 GMT
I would vote for Hawk HP+ pads on standard discs/calipers - love mine, they're awesome from cold and inspire great confidence with their strong bite from all speeds. Not sure about fade, though - have been nursing my poorly car till I can get it booked in and get the cam cover etc off to check it's not jumped a tooth on the cam gear thingies so really haven't been driving quickly at all! |
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Post by melx5 on Jan 4, 2018 8:02:11 GMT
Just out of interest, what about clearance? Not really needed on mine, stock car, road only, and hardly have to brake. |
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Post by atlex on Jan 5, 2018 20:49:35 GMT
This is a fairly well made video on the subject of standard options
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Post by tommyb on Jan 29, 2018 18:50:32 GMT
Have you changed the fluid since you fitted the brakes (3 years ago?) I'd change that before buying new calipers/discs/carriers etc.
I never had any brake problems with standard 1.8 brakes and good pads and fluid on either my old turbo or supercharged cars.
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Post by moro on Jan 29, 2018 19:50:26 GMT
Pad compound makes an enormous difference in braking performance and resistance to fade. There are three main reasons for fade as far as I know, brake fluid boiling, temperature of the pad rising above its working range or brake disc overheating, listed in order of how they are usually experienced. Assuming your fluid is fresh (echoing what Tommyb said above 3 years is certainly time to change), you probably want pads with higher upper temperature rating. DS2500 as well as Axxis ULT and similar are good road and occasional track pads however with higher power, semi slick tyres and aero you're putting much more load on the brakes and the pads are pushed out of their operating window. I can't comment on Rodders pads as I've never had any experience with them (and they don't provide any temp ratings), but I would look at competition pads at this point probably. To give some personal experience I really liked Axxis ULT on road and track before car upgrades meant they weren't coping really well and were fading after 10-20 minute sessions. Going by what was recommended by friends in professional motorsport I've upgraded to Carbon Lorraine, XP8 compound if I remember correctly and forgot about brake problems. They weren't cheap, about £250 or 300 a set I think, but then all high end pads are in that ballpark. Another make that was suggested as having proved itself well in competition was Endless. For 200 hp+ I would probably go with XP10 at the front and XP8 at the back.
Between replacing standard calipers with cool shiny ones and putting high end pads I'd choose pads every time. Freaky Parts upgrade is a great thing, it increases moment arm for higher brake force and larger disc size ( = mass, which is important here) means higher energy capacity, i.e. better resistance to fade, however I don't think brake disc overheating is what you're experiencing on DS2500 as they would overheat first.
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