All Things Mk5 > Performance Modifications
OEM Big Brake upgrade
tony_danza:
EARS in Macclesfield are much better on Alcon spares and will knock 10% off if you ask nicely, although Regal came in much better for the BBK @ £1800 because they buy in the cheaper VXR one, and then order the bells for the Golf... I believe?
In terms of a solid disc, I'd be concerned about cooking wheel bearings etc from the heat generated - the brakes on the back aren't up to much compared with my old vented TT set up, for example, so the fronts take much more abuse than a MKIV.
Msportman:
--- Quote from: tony_danza on July 03, 2009, 08:41:36 am ---EARS in Macclesfield are much better on Alcon spares and will knock 10% off if you ask nicely, although Regal came in much better for the BBK @ £1800 because they buy in the cheaper VXR one, and then order the bells for the Golf... I believe?
In terms of a solid disc, I'd be concerned about cooking wheel bearings etc from the heat generated - the brakes on the back aren't up to much compared with my old vented TT set up, for example, so the fronts take much more abuse than a MKIV.
--- End quote ---
Thanks....I'll let you know how Combe goes this weekend...Dunlop D01J's now fiited....absolutely brilliant even on the OE suspension to my pleasant surprise. Track rubber from my old MKIV...ex VW Cup Tyres that I stacked up on !!
DaveB@Vagbremtechnic:
Chaps, I wouldn't be too quick to dismiss solid discs, you have to be putting some serious energy into a 32 or 34mm disc to get it to warp. This is the problem with the 345mm R32 its diameter is promising for track use but at 30mm wide its not track hardy but with it being 345mm in diameter it can generate some heat especially with fast road/race pads.
I cant remember the formula but you need something like 35-45% more energy to get the same temperature increase from a (for example) 28mm wide disc as into a 32mm.
There are some 32mm wide grooved 350mm discs I've been using with 996Turbo calipers with good results......
Price..... inside of 200 quid per pair!!!!
I suppose it all depends on how much of a purist you are and whether the 20% weight saving on the disc means more than having 4-600 quid left in your pocket for a remap or an exhaust.....
I read somewhere F1 Discs are about 38mm wide to deal with the heat (Max 300mm in diameter though :surprised:)
I'd be p1ssed off if I toasted a pair of Alcons on a track day
tony_danza:
I tell you what you absolutely don't want to do.... leave a pad imprint on them, have to take them off and re-finish them by hand.
That IS NOT clever. :ashamed:
Poppa Dom:
--- Quote from: DaveB1970 on July 03, 2009, 09:45:07 pm ---Chaps, I wouldn't be too quick to dismiss solid discs, you have to be putting some serious energy into a 32 or 34mm disc to get it to warp. This is the problem with the 345mm R32 its diameter is promising for track use but at 30mm wide its not track hardy but with it being 345mm in diameter it can generate some heat especially with fast road/race pads.
I cant remember the formula but you need something like 35-45% more energy to get the same temperature increase from a (for example) 28mm wide disc as into a 32mm.
There are some 32mm wide grooved 350mm discs I've been using with 996Turbo calipers with good results......
Price..... inside of 200 quid per pair!!!!
I suppose it all depends on how much of a purist you are and whether the 20% weight saving on the disc means more than having 4-600 quid left in your pocket for a remap or an exhaust.....
I read somewhere F1 Discs are about 38mm wide to deal with the heat (Max 300mm in diameter though :surprised:)
I'd be p1ssed off if I toasted a pair of Alcons on a track day
--- End quote ---
F1 regulations - wheel must have no more than one brake disc of 278mm maximum diameter and 28mm maximum thickness. Each disc must have only one aluminium caliper, with a maximum of six circular pistons, and no more than two brake pads
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