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Index > @ the Pickup Bed (General Topics) > Thread: maz bitz
Thread: maz bitz
klr626


Newbie
Posts: 1
posted February 09, 2004 07:26 PM

maz bitz

i got a 1981 mazda 626
i have rx7 series II wheels and a 13 b twin dizzy motor
i want to supercharge it but some people tell me turbo is better
what should i do

       
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admin


Administrator
Posts: 446
posted February 10, 2004 09:20 AM

off topic

How about posting on a board like rx7forum.com or nopistons.com ? This is a REPU (Rotary Engine Pick Up) board.

With that said, there are _quite_ a few more turbo setups and folks that know turbo-rotaries than supercharged rotaries out there. If you do want to go with the SC, try atkinsrotary.com.
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Klaus43


Rotorhead
Posts: 1259
posted February 10, 2004 01:00 PM
Edited By: klaus42 on 10 Feb 2004 13:02

"What should I do?"...

Get a REPU!
(When exactly did they come out with a 13B with twin dizzies? Did you build a 13B with early 12A parts? Why?)

       
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Jeff20B


Moderator
Posts: 661
posted February 10, 2004 01:15 PM

Yeah really. I don't know what a twin dizzy 13B is. Even saying it to myself sounds wierd.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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Klaus43


Rotorhead
Posts: 1259
posted February 10, 2004 02:18 PM

My guess:

It's a special race setup, so that you can dial-in timing beyond the norm... you know, for those motors that make all their power at 10-15,000 RPM...

       
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Jeff20B


Moderator
Posts: 661
posted February 11, 2004 12:51 AM

Or better yet, it's so you can have two different advance curves; one specifically for leading, and the other for trailing. It allows different amounts of advance for each ignition system. It also can be load-dependent if vacuum advance is retained. Variable LT split is possible with this sort of a setup.

Would I even bother with such a setup? Nah.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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Klaus43


Rotorhead
Posts: 1259
posted February 11, 2004 11:45 AM

Does make me wonder...

...what could be possible on the high-tech computer-controlled high-performance end of trick ignition setups...
How do they control the 4-rotor LeMans race engine?

       
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Jeff20B


Moderator
Posts: 661
posted February 11, 2004 11:52 AM

They, in their infinite wisdom, sparked all three plugs at the same time per rotor face. If I were them, I would have found a way to spark the L plugs again 180º after the initial firing. I only say that because I found a way to do it on a 20B. I'm getting so close to test-firing it, I can taste it.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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