NoPistons -Mazda Rx7 & Rx8 Rotary Forum

NoPistons -Mazda Rx7 & Rx8 Rotary Forum (https://www.nopistons.com/)
-   Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)
-   -   Cas Vs. Fd Trigger Wheel (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/cas-vs-fd-trigger-wheel-31000/)

83turbo 01-02-2004 04:01 PM

>>we asked andrew about that and he says the s4 ecu only has enough power to run like 7500-8000rpms. www.16paws.com



I'm surprised it'll go that high. Anyone want to try it?

rotarystud 01-04-2004 11:48 PM

the problem i find is the fd pick ups are very sensitive to r/f and also the air gap is very important to be set right.if you have any thrust problems with your engine the air gap will change everytime your apply that foot to the left pedal.the c.a.s. is encased in a metal housing,less chance for r/f.also spins 1/2 the speed of the engine.and the air gap does not change unless the bearing wear out.

BigTurbo74 01-05-2004 01:08 AM

so what would be a good way of inspecting the cas for the bearing/bushing condition?

rotarystud 01-05-2004 02:25 AM

well i personally never have seen a c.a.s. go bad as far as the bearings.

j9fd3s 01-05-2004 09:45 AM


Originally Posted by BigTurbo74' date='Jan 4 2004, 11:08 PM
so what would be a good way of inspecting the cas for the bearing/bushing condition?

ive never seen a bad cas either but the dizzy's do wear out and it looks like the same shaft.



um you pull the thing and wiggle the gear and the rotor they shouldn't wiggle

93BlackFD 01-06-2004 12:05 AM

i asked rick engman and now i'm convinced that the trigger wheel is the best...

1Revvin7 01-06-2004 12:18 AM

Is there a way to convert an FC to the fd front cover and trigger wheel? Will the front cover bolt up? Or do us FC guys just have to play it safe with the timing on the stock cas...

j9fd3s 01-06-2004 11:05 AM


Originally Posted by 1Revvin7' date='Jan 5 2004, 10:18 PM
Is there a way to convert an FC to the fd front cover and trigger wheel? Will the front cover bolt up? Or do us FC guys just have to play it safe with the timing on the stock cas...

you could always go with some kind motronic (electromotive) trigger wheel.



i should mention that the rx8 is also crank trigger, updated from the fd

rotarystud 01-07-2004 03:36 AM

im going with what i have tested my self,and what i have seen on high power rotaries.like Abel Ibarra

Dragon 01-07-2004 04:41 AM

I'm running the FD Crank angle sensor and front cover on my 20B with the Microtec LTX12.. It rocks and I have no problems...


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