15a 21a 13G?

[12arotary]

Anyone know what they came it, if they came in anything, how I could track one down or were they just prototypes, information on these are soo scarce

[Jeff20B]

The 13G is the only one you MIGHT find. The others were prototypes. Too bad because I really like the 15A. I hope the 16X will live up to the hype so I can put one in my REPU. A 15A was going to go in until I learned how unobtanium it is.

[j_tso]

Racing Beat sells a boosted 13G for $48k. All were only used in racing.

The only other very rare RE was the 13A sold only in the front wheel drive R130 Luce. It had taller rotors that were the same width as the 12A. I think the new 16X is very similar in size.

[Madaz]

Originally Posted by j_tso

The only other very rare RE was the 13A sold only in the front wheel drive R130 Luce. It had taller rotors that were the same width as the 12A. I think the new 16X is very similar in size.

Yes your correct about the 13A sharing the same rotor diameter as the 16X however its width is the same as the 10A at 60mm.

[12arotary]

I've never even heard of the 13a, but I was hoping the 15a wasn't prototype

the info that I find out there is conflicting and very hard to come by only a few write ups every once and a while

[PercentSevenC]

There were also the 3804 and 3805, which were 3- and 4-rotor variants of the L8A respectively, and the 2002, which was two 10As linked together. And of course the 40A, Mazda's first rotary prototype. I understand there was also a 1-rotor version of the L8A, but I haven't found anything concrete on it.

[Whizbang]

real old 12a engines are interesting in their own right. Twin dizzy, 6mm apex seals.

then there are NSU engines

[12arotary]

Originally Posted by Gravity Fed

real old 12a engines are interesting in their own right. Twin dizzy, 6mm apex seals.

then there are NSU engines

from what I have sitting on my shelf the 6mm apex seals were tanks but the housings were junk, mine are both missing at least 25% of the facing crome in large flakes- all the rotors and seals are perfect though

[12arotary]

where did you find that picture of the Nsu engine?

[j_tso]

Here are some scans from the RX-8 book by Jack Yamaguchi, I recommend anyone to pick it up or any of the RX-7 books.

They're in black&white so the scanner would work faster.

21A and 15A

RE10X, an improved version of the 10A intended for a light coupe

RE13X, a power electric assisted RE. Most interesting is the combi-port, a switchable intake from side to peripheral. I don't think it's been seen since the Cosmo that raced at the Marathon del la Route. A bit of the left is cut short, I didn't want to bend the spine too much.

[Whizbang]

i have no idea where i got that picture i have an extensive rotary media collection ha

[Jeff20B]

I just pulled the 13B from the REPU yesterday for some work and noticed how far forward the motor mounts are. Yep, looks like a 15A could nay should have gone in. It's a truck with a rotary! A 15A would have made a lot of sense back then before the age of EFI and turbos. 135 bhp at 5750 rpm and 196nm (145 lb-ft) at 3500 rpm for the 15A compared to the 74 13B's measly 110 hp at 6000rpm and 117 lb-ft at 3500 rpm. Which would you prefer if given the choice?

[Whizbang]

im guessing they were concerned about emissions or fuel economy?

[Jeff20B]

That's the thing. The 15A had a massive thermal reactor and could pass an emissions test, apparently.

Fuel economy? I used to get 5 miles per gallon in the truck.

[12arotary]

Originally Posted by Jeff20B

That's the thing. The 15A had a massive thermal reactor and could pass an emissions test, apparently.

Fuel economy? I used to get 5 miles per gallon in the truck.

something wrong if you get 5 in a repu haha
but i'd take the 15a any day!