Guest Pimpin' the Jag Posted August 3, 2003 Report Share Posted August 3, 2003 I just want to know if i can use 87 rotors in a 90 13b. The 87 rotors are out of a turbo 2. Quote Link to comment Share on other sites More sharing options...
Rotarded1647545491 Posted August 4, 2003 Report Share Posted August 4, 2003 They changed the rotors in the Series 5 (89-91). I know that the series 4 (86-88) rotors are heavier than the series 5. My guess is that even if they fit in the S5, you wouldn't want to use them anyway as the difference in mass would affect your performance negatively. Quote Link to comment Share on other sites More sharing options...
CornerCarver Posted August 4, 2003 Report Share Posted August 4, 2003 Originally posted by Rotarded: They changed the rotors in the Series 5 (89-91). I know that the series 4 (86-88) rotors are heavier than the series 5. My guess is that even if they fit in the S5, you wouldn't want to use them anyway as the difference in mass would affect your performance negatively. This is correct and there also different compression. Quote Link to comment Share on other sites More sharing options...
Lustalbert Posted August 5, 2003 Report Share Posted August 5, 2003 just for curiosity, what is the compresion differance? Quote Link to comment Share on other sites More sharing options...
Berto Posted August 5, 2003 Report Share Posted August 5, 2003 Originally posted by RotaryHead: This is correct and there also different compression. word thats what i was gonna say. Quote Link to comment Share on other sites More sharing options...
CornerCarver Posted August 11, 2003 Report Share Posted August 11, 2003 I just saw this thread was still going sorry. 87-88 Turbo - Compression is 8.5 89-92 Turbo - Compression is 9.0 Quote Link to comment Share on other sites More sharing options...
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