ok so I am rebuilding my 12a and I have to get new rotors and rotor housing cause the old ones are toast. I have been looking around and I have thought about doing a 4 port 13b or just another 12a. well either way I go I want to get good apex seals. What are good seals to use. I have looked at atkins and racingbeat. but that is about as far as I have gotten so far. I know if I do a 4 port I need to get a new ecct shaft as well.

 

I've had no problems with stock mazda seals, and i have had problems with atkins seals, that is the only experience i've had. Everybody has their opinion on every seal, you probably won't get much good information unless you look pretty hard for it. This question has been asked a few times, click on the search button and search for "best apex seals" or something along those lines.

Marques

 

Stick with the stock Mazda 2mm seals, unless you plan on something crazy like 9,500+ rpm, 24+ psi of boost, etc

 

12a's use 3mm seals just in case you didnt know