Are 3rd gen rotors the same as 2nd gen TII rotors?
07-03-06, 07:00 AM
#4
Originally Posted by Mr. Y
Hello,
Just wondering if 3rd gen rotors are the same as 2nd gen TII rotors?
Thankyou
Just wondering if 3rd gen rotors are the same as 2nd gen TII rotors?
Thankyou
No. S5TII rotors have a cast face, while the FD rotors have a machined face. Not sure about the difference in weight, compression ratio, or durability of the face based on the different manufacturing processes. Hopefully someone with a little more knowledge will chime in.
07-03-06, 08:05 AM
#5
development
Originally Posted by whitey85mtu
No. S5TII rotors have a cast face, while the FD rotors have a machined face.
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07-03-06, 09:29 PM
#8
Originally Posted by whitey85mtu
No. S5TII rotors have a cast face, while the FD rotors have a machined face. Not sure about the difference in weight, compression ratio, or durability of the face based on the different manufacturing processes. Hopefully someone with a little more knowledge will chime in.
89-95 turbo rotors are all the same. 9.0:1 CR, 9.5lb, machined face.
There is one minor, minor cosmetic difference between the s5 and s6 rotors that only a builder or knowledgeable person could pick out, but it does not impact interchangeability or use in any of the engines.
The 87-88 turbo rotors are totally different; 8.5:1 CR, 10.5lb, cast face.
07-03-06, 09:42 PM
#9
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thread jack...
Originally Posted by RotaryResurrection
Yeah, how about me.
89-95 turbo rotors are all the same. 9.0:1 CR, 9.5lb, machined face.
There is one minor, minor cosmetic difference between the s5 and s6 rotors that only a builder or knowledgeable person could pick out, but it does not impact interchangeability or use in any of the engines.
The 87-88 turbo rotors are totally different; 8.5:1 CR, 10.5lb, cast face.
89-95 turbo rotors are all the same. 9.0:1 CR, 9.5lb, machined face.
There is one minor, minor cosmetic difference between the s5 and s6 rotors that only a builder or knowledgeable person could pick out, but it does not impact interchangeability or use in any of the engines.
The 87-88 turbo rotors are totally different; 8.5:1 CR, 10.5lb, cast face.
Originally Posted by RotaryResurrection
There is one minor, minor cosmetic difference between the s5 and s6 rotors that only a builder or knowledgeable person could pick out, but it does not impact interchangeability or use in any of the engines.
07-03-06, 11:40 PM
#10
Originally Posted by yuichiror
Kevin, the new site looks great! But is it true, you're no longer into FD's???
And that diff is??
07-04-06, 07:50 AM
#11
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Originally Posted by RotaryResurrection
No
Originally Posted by RotaryResurrection
Looking at the compression "bathtub" on the face of each rotor. The FD rotor appears to have a rectangular bathtub, with corners that are almost squared off. In slight contrast, the FC rotor appears a little more like an oval, the edges are more rounded. It's like a 1/4" difference, though, and it doesnt change anything as far as compression or weight.
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