Where to get rotors milled for 3mm?
08-22-02, 06:26 AM
#1
Where to get rotors milled for 3mm?
Anyone know wherer to send the rotors to get milled for 3mm apex seals. Also anyone who has had this done how much did it cost you. Finally were you satisfied with the job that you got?
Thanks for any responses guys.
Thanks for any responses guys.
08-22-02, 11:48 AM
#2
Three spinning triangles
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08-23-02, 07:04 AM
#4
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3mm seal are a added insurance but prove not to seal as good. 2mm are the best for a street or strip application IMO. If you feel the need to get the 3mm seal I think over time you will be sorry you did. If you are concerned about cracking an apex seal then get it but with good tuning @11:3.1 AFR you would not need 3mm seals. But if you want to run leaner then go with a 3mm.
Just my take
Just my take
08-23-02, 05:16 PM
#6
Gaijin Racing
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RP does it, but they have an insanely long (something like 6 weeks) backlog. They allegedly outsource their machining to a local shop that just takes FOREVER to get the stuff done.
K2RD also does the work, but I hear that they use a jig to cut the grooves which is not the way to do it. If you are running ceramic seals, and the grooves are often even a bit, its goodby $1800 set of apex seals. Any place that uses a jig to cut them, I would stay away from. The proper way to do it is to center the apex groove and take so many 1000ths off of each side to make a nice even 3mm cut. Before you send your expensive rotors off, find out how they cut the rotors. I know that RP does it correctly, but the wait is disappointing.
I also agree with the need to NOT use 3mm seals. If you have sloppy tuning, or are running a stock ECU with a bunch of mods and not much fuel contrl, they may be a good idea, but NOTHING seals like the OEM Mazda 3 piece 2mm seals.
K2RD also does the work, but I hear that they use a jig to cut the grooves which is not the way to do it. If you are running ceramic seals, and the grooves are often even a bit, its goodby $1800 set of apex seals. Any place that uses a jig to cut them, I would stay away from. The proper way to do it is to center the apex groove and take so many 1000ths off of each side to make a nice even 3mm cut. Before you send your expensive rotors off, find out how they cut the rotors. I know that RP does it correctly, but the wait is disappointing.
I also agree with the need to NOT use 3mm seals. If you have sloppy tuning, or are running a stock ECU with a bunch of mods and not much fuel contrl, they may be a good idea, but NOTHING seals like the OEM Mazda 3 piece 2mm seals.
08-23-02, 07:31 PM
#7
Freedoms worth a buck o'5
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I will agree with Kurgan, I know of the 3 different low mileage13 bt's done with 3mm's and not one of them will make over 80 psi on a compression tester, both rotors on all make a very even 80 psi, but, a high mileage 2mm motor was in the higher 90's and my own super high mileage n/a motor made 115 psi .. stick with 2mms and spend your cash on tuning..Max
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