big brake idea?
06-05-2009, 11:26 AM
#16
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I understood that he was referring to the mounting holes. I was speculating on whether it was possible to use alternate rotors and be able to use alternate rims. If it's time to change your rotors, then custom rims would not be cheaper at all. It's only speculation.
Alternate rims? I don't follow. What do new rotors have to do with wheels?
06-05-2009, 11:26 AM
#17
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I think he might be referring to those wheels that have an main center that is too close to the caliper. edit: that doesnt make sense. if we change the rotor offset, we need to change the caliper position and that is not easy to do. If it was, we could use the 993TT rotors. 
06-05-2009, 11:38 AM
#19
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Am I the only one here that thinks brakes are up there with fuel lines on the list of things you don't want to mess with?
I mean I like surprises as much as the next guy, but not when I'm going for the brakes.
I mean I like surprises as much as the next guy, but not when I'm going for the brakes.
06-05-2009, 11:39 AM
#20
Race Car
Dan
'91 928GT S/C
475hp/460lb.ft
06-05-2009, 11:42 AM
#21
Drifting
06-05-2009, 11:48 AM
#22
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Oh yea. One of the budget ways to convert a 4-lug Mustang to 5 is using Lincoln 5-lug front rotors which have the studs attached.
06-05-2009, 11:54 AM
#23
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06-05-2009, 11:57 AM
#24
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good question. I was going to pull one and make sure. the main thing is the bearing cap/cover. that looks ok. the next thing would be the hub,and both rotors (ours and the mercedes) have a pretty large hole to allow air to enter the cooling vanes. Ill check.
06-05-2009, 12:25 PM
#25
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I was just going by Anthony's (Cobalt's) experience of rotors coming apart. Is messing with the casting or drilling it not going to weaken them in ways that could be bad if you don't have machine shop level tools? I'm thinking of all the heat cycles they go through and any rotating assembly has to be balanced perfectly.
06-05-2009, 12:46 PM
#26
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Shouldnt be an issue to drill properly spaced holes. we are not messing with the casting. Only drilling simple holes. these rotors are bolted on with some space in the holes anyway. Its not like an interference fit or something exact. Its pretty tight fit, but not something that even hand tools couldnt do. (however, one mistake and the rotor is junk.)
The rotor /wheel speed is not like flywheel clutch stuff.
I forgot what happened with Colbalt's rotor coming apart? was it modified?
The rotor /wheel speed is not like flywheel clutch stuff.
I forgot what happened with Colbalt's rotor coming apart? was it modified?
I was just going by Anthony's (Cobalt's) experience of rotors coming apart. Is messing with the casting or drilling it not going to weaken them in ways that could be bad if you don't have machine shop level tools? I'm thinking of all the heat cycles they go through and any rotating assembly has to be balanced perfectly.
06-05-2009, 12:54 PM
#27
Nordschleife Master
I think he meant using the merc hub as supposed to the 928 hub.
As to drilling the holes, this is an easy job, but what you need to check is if the ID (part that slides over the hub) is the same ID as the 928 one as this is what centers it on the front. If this ID is the same then this could work.
As to drilling the holes, this is an easy job, but what you need to check is if the ID (part that slides over the hub) is the same ID as the 928 one as this is what centers it on the front. If this ID is the same then this could work.
06-05-2009, 01:24 PM
#28
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Good point. certainly a deal killer if it doesn't.
Ill check
Ill check
I think he meant using the merc hub as supposed to the 928 hub.
As to drilling the holes, this is an easy job, but what you need to check is if the ID (part that slides over the hub) is the same ID as the 928 one as this is what centers it on the front. If this ID is the same then this could work.
As to drilling the holes, this is an easy job, but what you need to check is if the ID (part that slides over the hub) is the same ID as the 928 one as this is what centers it on the front. If this ID is the same then this could work.
06-05-2009, 01:26 PM
#29
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Shouldnt be an issue to drill properly spaced holes. we are not messing with the casting. Only drilling simple holes. these rotors are bolted on with some space in the holes anyway. Its not like an interference fit or something exact. Its pretty tight fit, but not something that even hand tools couldnt do. (however, one mistake and the rotor is junk.)
The rotor /wheel speed is not like flywheel clutch stuff.
I forgot what happened with Colbalt's rotor coming apart? was it modified?
The rotor /wheel speed is not like flywheel clutch stuff.
I forgot what happened with Colbalt's rotor coming apart? was it modified?
mark,
<snip> Zimmerman is an aftermarket rotor and is far less quality than the Porsche OE manufacturer. I have seen their rotors fall apart under hard use and although they look the same the veining in the casting is not the same design and offers less air flow. We actually cut one of each apart for a brake demo. The zimmerman cut easily and the OE was much harder to cut. this might be why the have a tendency to groove more than the OE rotors. I was told but could be wrong that the holes are drilled not cast.
<snip> Zimmerman is an aftermarket rotor and is far less quality than the Porsche OE manufacturer. I have seen their rotors fall apart under hard use and although they look the same the veining in the casting is not the same design and offers less air flow. We actually cut one of each apart for a brake demo. The zimmerman cut easily and the OE was much harder to cut. this might be why the have a tendency to groove more than the OE rotors. I was told but could be wrong that the holes are drilled not cast.
06-05-2009, 01:33 PM
#30
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I think he meant using the merc hub as supposed to the 928 hub.
As to drilling the holes, this is an easy job, but what you need to check is if the ID (part that slides over the hub) is the same ID as the 928 one as this is what centers it on the front. If this ID is the same then this could work.
As to drilling the holes, this is an easy job, but what you need to check is if the ID (part that slides over the hub) is the same ID as the 928 one as this is what centers it on the front. If this ID is the same then this could work.