RX7Club.com - Mazda RX7 Forum - Engine Casting Codes

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)

- Old School and Other Rotary (https://www.rx7club.com/old-school-other-rotary-63/)

- - Engine Casting Codes (https://www.rx7club.com/old-school-other-rotary-63/engine-casting-codes-398558/)

Kill No Cone

02-24-05 01:32 AM

Engine Casting Codes

Does anyone know where there is a resouce that will tell you what a 13B with R5 and 3B castings are from?

I guess I am looking for something that has all the casting codes, any ideas?
Thanks

Jeff20B

02-24-05 03:20 AM

No ideas, but 3B was '74-'75 RX-4 and REPU. There are two types of R5 castings, nitirided and non. Since nitriding didn't come out until '79, (or possibly '78), we can figure the nitrided R5 castings are newer than non nitrided R5 castings. My '76 Cosmo has non nitrided R5 castings.

Kill No Cone

02-24-05 07:16 PM

Thanks Jeff!

All times are GMT -5. The time now is 11:07 PM.