time to start working on my 1983 rx7 but wondering which engine to go for. i was thinking of a 12a turbo but maybe i shold go with a 13b na i dont know. which do you guys think would be better? and if you guys have any other rotory engine Suggestions feel free to post

thank you

go look for a 20B from a mazda cosmo, its a three-rotor one, but it only comes with an auto box, a manual one off a 13b should bolt straight on, but you'd need to fabricate your own engine/transmission mounts.

20b would be nice. a TII 13b would be good as well. If you want to stay affordable for a good new rebuilt motor, look at a 13BT should run you 3000CND.

thanks guys
does anyone know where i can find a S5 TurboII engine?
thanks

S5 Turbo II Motor?

Not sure what the hell that means, but one would imagine perhaps a rotary specialty shop (assuming the S5 is a rotary)

If you live in Canada? Try the Rotary Specialists in Calgary. But other then that I do not know?

JDM MAZDA 13BT S5 TURBO II ROTARY ENGINE
and i live in the LA-Ventura county area
so if any of you have any advise please post
thank you

Uhm, you could take the trip to Canada and see FDTT, from the sounds of it he's good, and it's not too expensive either.

JDM MAZDA 13BT S5 TURBO II ROTARY ENGINE
and i live in the LA-Ventura county area
so if any of you have any advise please post
thank you

S5 = 89-91 RX-7

if youre hellbent on swapping, i'd get teh S4 (86-88) motor, theyre cheaper

Um JDM VS USDM TII motors are exactly the same with the exception of the Enfini cars.
Unless you have some money to be throwing around i suggest you put a 12A back in there.

PS the 12A is not the best to turbo, but can be done.

Um JDM VS USDM TII motors are exactly the same with the exception of the Enfini cars.
Unless you have some money to be throwing around i suggest you put a 12A back in there.

PS the 12A is not the best to turbo, but can be done.

well they are mostly the same, but when i took apart my jspec s4 motor, the fuel rail was different.
the fuel rail is better designed imo, because the pulsation dampner has a different locationg

How does it really make a difference where the Pulsator is located?

because in the US spec location, the pulsation damper might leak and spill fuel on the exhaust manifold (very hot) and cause a fire.

if you smell gas underhood, thats the first thing you should check

The USDM and JDM engines are EXACTLY the same for TII's.
You may have had an S5 rail on a S4 engine.

I love seeing people say "ya its JDM, see no EGR there". LMAO, the hole JDM thing is a bit much now, especialy when i go to EBAY and see JDM parts for domestics.

The USDM and JDM engines are EXACTLY the same for TII's.
You may have had an S5 rail on a S4 engine.

I love seeing people say "ya its JDM, see no EGR there". LMAO, the hole JDM thing is a bit much now, especialy when i go to EBAY and see JDM parts for domestics.

man i could SWEAR the pd was different

i'll take pics if i can

Ahh interesting, Why is the Asian one in a different spot though? I don't understand?

Ahh interesting, Why is the Asian one in a different spot though? I don't understand?

Its not, could be either a mistake in the perseption of where it is of it may be a different fuel rail.

Bastards. Always given them people across the pond the better stuff.. GRR! anyways thanks for explaining.