Cyro treated rotors
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From: Oxnard, CA
Originally Posted by Clark,Nov 3 2009, 02:50 PM
bellwilliam,
If it's not a rules/points/spec thing, a BBK, or a SSK (same size kit
) will probably pay for itself with cheaper pads.
I bought the Wilwood Dynalite kit that Partshelper used to sell (not sure if they still do). The rotors are the same size, though 2-piece. The pad material is about the same swept area, though 4 pot action on the caliper and quick pad change is a bonus.
The pay for itself part though is that with the commonality of that caliper, pads are costing me from around 1/3rd to 1/2 the price for the same compound, and I have a much wider variety of compounds available from which to choose.
I don't know if this would be the same with all BBK's, but depending on how often you go through pads it may be worth investigating.
If it's not a rules/points/spec thing, a BBK, or a SSK (same size kit
) will probably pay for itself with cheaper pads.I bought the Wilwood Dynalite kit that Partshelper used to sell (not sure if they still do). The rotors are the same size, though 2-piece. The pad material is about the same swept area, though 4 pot action on the caliper and quick pad change is a bonus.
The pay for itself part though is that with the commonality of that caliper, pads are costing me from around 1/3rd to 1/2 the price for the same compound, and I have a much wider variety of compounds available from which to choose.
I don't know if this would be the same with all BBK's, but depending on how often you go through pads it may be worth investigating.
Also, what does it cost to replace the rotors on your 2-piece Wilwood's? I would imagine that it could be cheaper, since they don't have to supply center-hats with the rotors.. And lighter rotors are always better for performance.
-Cliff
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I use Wilwood on my Miata. it is $~75 per rotor from Summitracing.
pads is a tad cheaper. but because pad is LARGER, so it also lasts longer.
I plan to run brake duct fans. will update you guys how that works out. it worked well on my other track car. rear is easy, front is a bit tricky to install
my guess reason for cracks is because drivers are not taking cool down lap. they come in hot, and park the car, causing uneven cooling. good thing about brake duct fans is even when you go slow at cool down lap or in the pit, fan is still blowing at full speed. hopefully it will help with cracks.
pads is a tad cheaper. but because pad is LARGER, so it also lasts longer.
I plan to run brake duct fans. will update you guys how that works out. it worked well on my other track car. rear is easy, front is a bit tricky to install
my guess reason for cracks is because drivers are not taking cool down lap. they come in hot, and park the car, causing uneven cooling. good thing about brake duct fans is even when you go slow at cool down lap or in the pit, fan is still blowing at full speed. hopefully it will help with cracks.
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Originally Posted by PhantomAP1,Nov 6 2009, 11:50 AM
I am planning on going with Dynalites myself, but I have been having a tough time finding information on pad compounds from Wilwood.. I was looking for Cobalt Spec VR pads as well, but I can't find them (I googled).. I wish that I could find them on Corbotech's site, but they don't have any specialty calipers just stock caliper listings for cars. I would like to run with a pad that performs like the CT XP12's up front using Dynalites.
-Cliff
-Cliff
they sell PFC and Hawk pads. PFC01 is very good.
you can also call Carbotech or 949racing (this forum sponsor) to get you XP12 for Wilwood caliper. it is a common size pads for Miatas.
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Originally Posted by spectacle,Nov 6 2009, 12:24 PM
Fans? Like powered fans?
something like this. they are are just a rebadged marine bilge pump.
http://www.pegasusautoracing.com/productde....asp?RecID=5751
exact same item, w/o sticker: http://www.amazon.com/dp/B000O8AZ8K/ref=as...ASIN=B000O8AZ8K
http://www.amazon.com/attwood-1731-4-Attwo...ref=pd_sbs_sg_2
http://cgi.ebay.com/ebaymotors/Nascar-Dual...id=200391988818
product specification: http://www.attwoodmarine.com/store/categor...ilation/blowers
at high speed, brake gets plenty of cooling. the issue is at low speed corners, brakes don't get enough cooling. thus where the fan works well (fan blows at ~35mph). when you get off track, driving back to pit, it also helps cool the brakes.
proper way of doing a brake duct fan is have a "Y", 2 inlets (1 from duct hole, 1 from the fan), 1 outlet into center of the rotor. fan works up to 35mph, regular unobstructed duct work at 35mph+
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From: Santa Cruz, CA, US
Originally Posted by bellwilliam,Nov 6 2009, 12:06 PM
my guess reason for cracks is because drivers are not taking cool down lap. they come in hot, and park the car, causing uneven cooling.
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From: Oxnard, CA
I've heard good and bad things.. But I still don't get what makes them "crappy". Is it poor clamping force, leaking, bad dus seals, etc? I haven't invested in the entire sey-up just yet (I bought the brackets, and already had SS lines), but I was looking for a cheaper alternative to a complete BBK, and this one fit the bill.
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