I am looking for a 20B engine rotor. PM me if you have anything.

 

They are the same rotors as the 13b, just use one of them

 

I was going to say they should be the same as the 89 to 91 13b turbo. i think they were both the same
compression ratio.
matt

 

S5 rotors will work and they're '89-'91 like you said. Or check Mazdatrix's proce list for 20B stuff. Scroll down to the 3Rxxx etc section and look for rotors. I know they sell the front and rear 20B counterweights which are different from S5 weights, but again I think the rotors are the same.

 

The thing is I can't find 89-91 turbo rotors so i thought i would try and see if someone had 20b rotors.

 

If you can find a pair of 89-91 non-turbo rotors, I would be happy to swap for a set of 89-91 turbo rotors I have. One has some water pitting on one face, but its not in a critical place.
You can email me at gwmaz at 02net.co.nz

Gary

 

20B Cosmo / 89-91 13BT Rotor = Mazda Part Number N3Y8-11-B10B

http://www.ontariomazda.com/
http://www.mazdarecycling.com/
http://www.racingbeat.com/
http://www.mazdatrix.com/

 

Or you can also use a FD rotor... they are the same weight as the koki FC turbo rotor and the cosmo rotor