|
Originally Posted by Maxt' post='859524' date='Feb 17 2007, 02:35 PM
There is one missing from that list , and its the lightest.. 10A?? |
the 74-85 13b rotors are the heavy ones, 12+ lbs each. s4 is like 10
|
12a from 74-82 is like 10lbs
83-85 is like 9.6 or so, about the same as the s5 13b i dont know about the pre-73 12a's, ive got some rotors, but they are like the 74-85 13b rotors, useless |
Originally Posted by j9fd3s' post='859528' date='Feb 17 2007, 01:01 PM
12a from 74-82 is like 10lbs
83-85 is like 9.6 or so, about the same as the s5 13b i dont know about the pre-73 12a's, ive got some rotors, but they are like the 74-85 13b rotors, useless |
Originally Posted by Maxt' post='858943' date='Feb 13 2007, 07:57 PM
The rx8 is dimensionally similar to the FD shaft, which are staggered bearing designs. In truth most turbo motors power peak is so far below the reasoning for the rx8 stuff, the cost benefit difference really doesnt make it add up.. The RX8 gears arent any stronger than what its in an FC block.. Thanks. |
Originally Posted by Maxt' post='859533' date='Feb 17 2007, 12:23 PM
Its an 80mm rotor(13b) rotor as well.. |
Originally Posted by diabolical1' post='859538' date='Feb 17 2007, 01:38 PM
probably one of those post-'96 special model REW engines that never came here. am i close? https://www.nopistons.com/forums/pub...IR#>/smile.gif OK I will give it up... 13b/20b mazda sports kit rotor.. 4000 g, 9.4 compression, 3mm groove for carbons. Produced during the 90's and floating around Japan in the odd used parts store, usually without the required counterweights. This was the rotor produced for the mazda sport kit PP engine that was availabe to the public in 309 ps for 13b and 450ps for 20b forms. The rotors were also available seperately. |
Originally Posted by Maxt' post='859540' date='Feb 17 2007, 12:52 PM
Nope.hehe.. OK I will give it up... 13b/20b mazda sports kit rotor.. 4000 g, 9.4 compression, 3mm groove for carbons. Produced during the 90's and floating around Japan in the odd used parts store, usually without the required counterweights. This was the rotor produced for the mazda sport kit PP engine that was availabe to the public in 309 ps for 13b and 450ps for 20b forms. The rotors were also available seperately. zry1-11-b10a listing says "rotor gear secured with snap ring, light weight rotor for 13b engines, 3750gm" then as a footnote it says "using 20b lightweight rotors in the 13b engine requires 13b rotor bearing (zry1-11-b21) and rebalancing the whole rotating assembly" nla here, dealer cost is 1693.05 each |
Originally Posted by j9fd3s' post='859544' date='Feb 17 2007, 02:31 PM
zry1-11-b10a listing says "rotor gear secured with snap ring, light weight rotor for 13b engines, 3750gm" then as a footnote it says "using 20b lightweight rotors in the 13b engine requires 13b rotor bearing (zry1-11-b21) and rebalancing the whole rotating assembly" nla here, dealer cost is 1693.05 each https://www.nopistons.com/forums/pub...IR#>/blush.gif bargain.....Wonder why the weight difference, unless they shed another 250 g from when my book was printed? I just found another set of rotors that are odd ,7.5:1 and 8.3:1.. |
you guys are downright scary ... but i like it.
|
| All times are GMT -5. The time now is 10:26 PM. |
© 2024 MH Sub I, LLC dba Internet Brands