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  #97  
Old 07-17-2012, 02:19 PM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

Hawk just sent me their entire list od pads available for the 2012 jeep SRT8

HB194Z.570
Disc Brake Pad; Performance Ceramic w/0.570 Thickness; Rear;


HB649Z.605
Disc Brake Pad; Performance Ceramic w/0.605 Thickness; Front;


HB194E.570
Disc Brake Pad; Blue 9012 w/0.570 Thickness; Rear;


HB649W.605
Disc Brake Pad; DTC-30 w/0.605 Thickness; Front;


HB649G.605
Disc Brake Pad; DTC-60 w/0.605 Thickness; Front;


HB194G.570
Disc Brake Pad; DTC-60 w/14mm Thickness; Rear;


HB194U.570
Disc Brake Pad; DTC-70 w/0.570 Thickness; Rear;



HB649U.605
Disc Brake Pad; DTC-70 w/0.605 Thickness; Front;


HB194N.570
Disc Brake Pad; HP Plus w/0.570 Thickness; Rear;


HB194F.570
Disc Brake Pad; HPS Performance Street w/0.570 Thickness; Rear;


HB649F.605
Disc Brake Pad; HPS Performance Street w/0.605 Thickness; Front;


HB194S.570
Disc Brake Pad; HT-10 w/0.570 Thickness; Rear;


HB194V.570
Disc Brake Pad; HT-14 w/0.570 Thickness; Rear;


HB194Y.570
Disc Brake Pad; LTS w/0.570 Thickness; Rear;
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  #98  
Old 07-17-2012, 02:20 PM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

Quote:
Originally Posted by Mongoose9400 View Post
No, I do not. A while back KingMonkey on the red site bought a new OEM set to send out to be drilled. After that they were circulated around for others to swap theirs. Not sure what happened with that set.


Sent from my iPhone 4S
yeah...R1 is a vendor on here and steven offered me the same. I went ahead and ordered new stockers......I will probably wait for their premium rotros later this year for drilled
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  #99  
Old 07-17-2012, 03:49 PM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

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Originally Posted by Scottina06 View Post
yeah...R1 is a vendor on here and steven offered me the same. I went ahead and ordered new stockers......I will probably wait for their premium rotros later this year for drilled
2 piece with an alum. hat.
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  #100  
Old 07-17-2012, 11:24 PM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

not sure about all that now.....I saw some brembo 2 piece rotros for over $2k for the pair....LOL
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  #101  
Old 07-18-2012, 08:04 AM
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Drilled rotors

If the holes are actually drilled then the rotor will crack around the holes. Porsche's rotors have the holes cast in which is the way it should be done.
They are less prone to cracking than their cheaper counterparts with actual drilled holes.

Also remember the holes reduce mass and mass is your best friend in a rotor especially in severe use.

I would also check w/Raybestos, Wilwood, SSB etc to see if they a kit for the GC. Brembo's are way overpriced and you are paying for the name. A complete set of carbon rotors and multi piston calipers wouldnt be that much more than the Brembos. Will interesting to see what Maserati uses on their version of the GC.

And again multi piston calipers may or may not give shorter braking distances. Multiple pistons distribute the braking force over the rotor more effectively but they dont guarantee shorter braking distances.

Cheapest way to get better braking and shorter distances is a more aggressive pad biased towards braking rather than low noise, a brake fluid with a higher wet boiling point, and finally and most important better brake cooling. Also a move away from AT and MT tires to a summer high performance tire.

Finally dont forget to bed in brake pads in a new vehicle or when they are changed.
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  #102  
Old 07-18-2012, 08:47 AM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

these brembos are less than $700 for brand new 6 pistons that are direct bolt ups to ALL 2011+ grand cherokees and Durangos. No one else makes a kit for the 2011+ wk's/wd's. Theres a guy on ebay making kits for the wk SRT's for $2200+...but he had no interest in making a kit for the wk2/wd. This is cheaper than him anyway.....$700 for calipers, $350 for rotors and $7 for new dust shields is less than $1100 for everything.
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  #103  
Old 07-18-2012, 10:44 AM
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Re: Drilled rotors

Quote:
Originally Posted by dave2002ti View Post
If the holes are actually drilled then the rotor will crack around the holes. Porsche's rotors have the holes cast in which is the way it should be done.
They are less prone to cracking than their cheaper counterparts with actual drilled holes.

Also remember the holes reduce mass and mass is your best friend in a rotor especially in severe use.

I would also check w/Raybestos, Wilwood, SSB etc to see if they a kit for the GC. Brembo's are way overpriced and you are paying for the name. A complete set of carbon rotors and multi piston calipers wouldnt be that much more than the Brembos. Will interesting to see what Maserati uses on their version of the GC.

And again multi piston calipers may or may not give shorter braking distances. Multiple pistons distribute the braking force over the rotor more effectively but they dont guarantee shorter braking distances.

Cheapest way to get better braking and shorter distances is a more aggressive pad biased towards braking rather than low noise, a brake fluid with a higher wet boiling point, and finally and most important better brake cooling. Also a move away from AT and MT tires to a summer high performance tire.

Finally dont forget to bed in brake pads in a new vehicle or when they are changed.
Cross drilled rotors have proven to increase braking performance vs. solid rotors across the board on street drivin pass. cars. The SAE did a very extensive study on the subject, you can look it up for yourself. Crossdrilling increased brake cooling significately vs the solid rotors. Only in racing will cross drilled rotors begin to crack with crossdrilling. Not even with very spirited street driving will quality manufactured crossdrilled rotors crack! I'm not referencing cheap e-bay cross-drilled rotors.... but hi quality blanks made to be cross-drilled allowing for proper rotor vane placement for cross-drilling with chamfered holes to reduce heat stress cracking.

Porche has never cast holes into any rotor they have ever made! That is an internet myth! They have always cross-drilled or machined their OEM rotors. Always.... ask them.

http://www.tazcobra.com/SAE_2006010691_Synopsis.pdf
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  #104  
Old 07-18-2012, 11:01 AM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

Quote:
Originally Posted by Scottina06 View Post
not sure about all that now.....I saw some brembo 2 piece rotros for over $2k for the pair....LOL

Do you know of any other cross-drilled rotors being offered for the SRT8 WK2?

What pads did you go with?
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  #105  
Old 07-18-2012, 11:09 AM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

you can buy the oem and have r1 drill them for you. They have done it for KingMonkey

I went with the raybestos ATD1405M. That was the only pads I could find at the time. Hawk just sent me a lift of pads they have available and I posted it above. I plan to do the rears as well...so hopefully R1 will have some of their premium cross drilled rotors by then and stoptech will have some pads. That has been the best combo on my gen1 brembos IMHO.
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  #106  
Old 07-18-2012, 05:30 PM
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Re: Drilled rotors

Quote:
Originally Posted by Raptor View Post
Cross drilled rotors have proven to increase braking performance vs. solid rotors across the board on street drivin pass. cars. The SAE did a very extensive study on the subject, you can look it up for yourself. Crossdrilling increased brake cooling significately vs the solid rotors. Only in racing will cross drilled rotors begin to crack with crossdrilling. Not even with very spirited street driving will quality manufactured crossdrilled rotors crack! I'm not referencing cheap e-bay cross-drilled rotors.... but hi quality blanks made to be cross-drilled allowing for proper rotor vane placement for cross-drilling with chamfered holes to reduce heat stress cracking.

Porche has never cast holes into any rotor they have ever made! That is an internet myth! They have always cross-drilled or machined their OEM rotors. Always.... ask them.

http://www.tazcobra.com/SAE_2006010691_Synopsis.pdf

Really little boy. Provide cite for your claims on Porsche rotors??? Come on!
BTW I have installed Porsche rotors on 934s and 935s!

Now a rotor is a heat sink so the SAE paper you mention is wrong. Rotors were never cross drilled for cooling but Porsche cross drilled rotors for off gassing suggest you read Excellence Was Expected. At the end of Mulsanne before they pussified the track with chicanes Porsche drivers would hit the brakes and experience a momentary delay as the gases from the pads prevented the the pads from clamping the rotor.

Brake pad composition has evolved since the mid 70's. Brake pads rarely off gas today. Bedding in is still recommended.

If cross drilled rotors are so great how come NASCAR doesnt use them at tracks like Richmond, Martinsville, Bristol, Sear Point and the Glen??? NASCAR uses cast iron rotors and the teams would lobby for cross drilling if it would mean having brakes at the end of the race.

Sorry I have changed enough rotors on friends street driven vehicles to know that they can and will crack. These are vehicles that arent auto X'd or tracked.

Cross drilling removes mass which means the rotor can not dissipate heat as effectively. Brake cooling is done by running holes in the front of the car to which you attach high temp ducting. You then direct the ducting into the rotor and not across it. I spent well over a hundred hours doing brake testing
with brake temp paints, different fluids, different duct shapes etc at various tracks so I think I have a clue on how brake system works.

If you are going to Google something punk just dont look for BS that supports your lack of knowledge and experience.

Have a great day and please dont do any brake work for your friends!!!!!!

You might also read info from Raybestos, Wilwood etc on cross drilling.

Next we can discuss are the benefits of multi piston calipers worth money???

from Grassroots Motorsports:


Quote:
"Crossdrilling your rotors might look neat, but what is it really doing for you? Well, unless your car is using brake pads from the '40s and 50s, not a whole lot. Rotors were first drilled because early brake pad materials gave off gasses when heated to racing temperatures, a process known as "gassing out." ...It was an effective solution, but today's friction materials do not exhibit the some gassing out phenomenon as the early pads. Contrary to popular belief, they don't lower temperatures. (In fact, by removing weight from the rotor, they can actually cause temperatures to increase a little.) These holes create stress risers that allow the rotor to crack sooner, and make a mess of brake pads--sort of like a cheese grater rubbing against them at every stop. Want more evidence? Look at NASCAR or F1. You would think that if drilling holes in the rotor was the hot ticket, these teams would be doing it...Slotting rotors, on the other hand, might be a consideration if your sanctioning body allows for it. Cutting thin slots across the face of the rotor can actually help to clean the face of the brake pads over time, helping to reduce the glazing often found during high-speed use which can lower the coefficient of friction. While there may still be a small concern over creating stress risers in the face of the rotor, if the slots are shallow and cut properly, the trade-off appears to be worth the risk. (Have you looked at a NASCAR rotor lately?)
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  #107  
Old 07-18-2012, 05:33 PM
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Enough of the childish name calling unless you want me involved!
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  #108  
Old 07-18-2012, 05:37 PM
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Re: GAUGING interest in adding SRT8 Brembos to your wk2?

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Enough of the childish name calling unless you want me involved!
You have me shaking and messing my pants. Please get involved!
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