NoPistons -Mazda Rx7 & Rx8 Rotary Forum

NoPistons -Mazda Rx7 & Rx8 Rotary Forum (https://www.nopistons.com/)
-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   s4 n/a rotors in an s5 turbo motor (https://www.nopistons.com/2nd-generation-specific-17/s4-n-rotors-s5-turbo-motor-2669/)

The Blue Bomber 05-21-2002 12:23 PM

right now i'm just playing with idead but could it work and i not blow up on my first run? and how much boost could i run? also i guess i would need 3mm apex seals right?

13BAce 05-21-2002 01:00 PM


Originally Posted by The Blue Bomber' date='May 21 2002, 02:23 PM
right now i'm just playing with idead but could it work and i not blow up on my first run? and how much boost could i run? also i guess i would need 3mm apex seals right?

You can do it, but you'll need both the 86-88 front and rear counterweights. You'll have to be careful with the tuning.

treceb 05-21-2002 01:09 PM


Originally Posted by 13BAce' date='May 21 2002, 01:00 PM
You can do it, but you'll need both the 86-88 front and rear counterweights. You'll have to be careful with the tuning.

make that EXTREMELY careful. from reading stuff on the net, the most for a do it yourself thing is around 5 psi. But dont quote me on that. Ive also read that with very accurate tuning, ie every 10 or so rpms, it can be done. At least it hasd been tried. https://www.nopistons.com/forums/pub...#>/biggrin.png

13BAce 05-21-2002 01:23 PM


Originally Posted by treceb' date='May 21 2002, 03:09 PM
[quote name='13BAce' date='May 21 2002, 01:00 PM']You can do it, but you'll need both the 86-88 front and rear counterweights. You'll have to be careful with the tuning.

make that EXTREMELY careful. from reading stuff on the net, the most for a do it yourself thing is around 5 psi. But dont quote me on that. Ive also read that with very accurate tuning, ie every 10 or so rpms, it can be done. At least it hasd been tried. https://www.nopistons.com/forums/pub...#>/biggrin.png[/quote]

I wouldn't do it without a standalone ECU.

The Blue Bomber 05-22-2002 11:31 AM

well at least it has been tried. does anyone know of a link to some info about trying it. or at least info on putting different rotors in different housings.

about the tuning i have heard of a very reputable shop around hear somewhere. i guess i'll have to go and find it.

dac 05-22-2002 10:14 PM

N/A has 9.0:1 compression vs. 8.5:1 for the Turbo.



Doesn't the Turbo have larger 3mm Apex Seals vs. 2mm (Not sure about that).



I'd stick a J&S Knock Sensor on there as a SAFETY MEASURE.

13BAce 05-22-2002 10:46 PM


Originally Posted by dac' date='May 23 2002, 12:14 AM
N/A has 9.0:1 compression vs. 8.5:1 for the Turbo.



Doesn't the Turbo have larger 3mm Apex Seals vs. 2mm (Not sure about that).



I'd stick a J&S Knock Sensor on there as a SAFETY MEASURE.

All 86+ rotaries have 2 mm seals. The 86-88 NA motors are 9.4:1. 89-91 TII rotors are 9:1.

dac 05-23-2002 11:12 AM


All 86+ rotaries have 2 mm seals. The 86-88 NA motors are 9.4:1. 89-91 TII rotors are 9:1.


You sure about that? I read that the 89+ are 9.4:1 and the 86-88 are 9:1 which is part of the reason for their increase in power. The 89+ also has slightly lighter rotors and the intake has been changed.

13BAce 05-23-2002 11:35 AM


Originally Posted by dac' date='May 23 2002, 01:12 PM

All 86+ rotaries have 2 mm seals. The 86-88 NA motors are 9.4:1. 89-91 TII rotors are 9:1.


You sure about that? I read that the 89+ are 9.4:1 and the 86-88 are 9:1 which is part of the reason for their increase in power. The 89+ also has slightly lighter rotors and the intake has been changed.

http://www.mazdatrix.com/faq/rotorwgt.htm

OKIERX-7 05-23-2002 01:48 PM

So the 89-92 NA rotors are the highest compression rotors availible for the weight? I also thought the FD rotors were lighter than ANY FC rotors? Hmmmm how come the S5 NA rotors are not more highly coveted items then?


All times are GMT -5. The time now is 11:42 AM.


© 2024 MH Sub I, LLC dba Internet Brands