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Mazda RX-7

So I have a miata and want to do a 13b swap.. whats average price for motor trans and ecu and harness?

So I have a miata and want to do a 13b swap.. whats average price for motor trans and ecu and harness?

Cam'ron

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43 Answers

Mike

1200-10,000. Depending on the condition of everything.(rebuilt or not, aftermarket shit, ect ect) If we are talking t2 that is. Na always cheaper.

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Cam'ronQuestion author

Ok how reliable are they honestly.. not gonna be a daily but will be on the street a good bit.. I have heard about apex seals. But im just curious.

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Victor

Oh my, we got a fresh one here.

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Cam'ronQuestion author

And will probably be na at first.. just to get the swap done and running.

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Thomas

If you dont know much about rotary do lots of research, na is pretty reliable but it really comes down to the owner, my fc had 242xxx on the original apex seals, i wasn’t be easy on the motor either

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Victor

Na swap would be super cheap.

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David

There’s a lot more to a rotary than apex seals

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Cam'ronQuestion author

Ok.. I have done a good bit of research but I want others opinion

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Cam'ronQuestion author

Oh trust me I know there is.. lol

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Victor

Like farts and ky jelly

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David

Buy a rebuilt 12a. Super cheap and Super reliable

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Victor

Miata trans and rx7 na trans share a lot from each other.

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Victor

Swap tail shaft housings, that handles everything from the trans back for the swap.

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Cam'ronQuestion author

I was looking at a 12a but think I’d rather have 13b

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Victor

Everything else is kinda self explanatory

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Victor

Carb and distributor would make it super simplified.

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David

Yea wiring is far from fun and gets costly.

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Victor

Have the keg rebuilt with some nice port work and you wont be sorry

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James

You should ask @Erik there was a lot of work involved.

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David

If youve got time, money, and a welder, any thing can happen

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Erick

I believe @Lucky makes a 13b subframe for the miata, they might be sold out right now but you should give them a call up about it. it’s around 2700 but I could be wrong

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Cam'ronQuestion author

@Erick u are correct.. I have previously spoken to them.. 2500

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Stuart

I dont think you need any of those things for the swap

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Weston

What’s funny is I just posted about how awesome the Miata and MX5 is on my facebook page.

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Cam'ronQuestion author

I love my miata.. even though its a p.o.s. lol

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Weston

I have the 2015 as my desktop background. I want to put a 20b in one of those.

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Cam'ronQuestion author

Please do it.. then come get me so I can see what that’s like

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Weston

If I had money for it, I’d have my 2015 by now rofl. I have a 20b sitting in a friend’s garage back in NC. So I’m halfway there.

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Cam'ronQuestion author

What u want for the 20b??

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Weston

It’s my project motor. Not for sale. I’m waiting for the right time for it. I was going to put it in my 2011 Accent hatchback, but that’s going to be a ton of work under the car so I’m having it mothballed until I have my hands on an MX5.

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Weston

FWD 20b just seems insulting.

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Cam'ronQuestion author

Well get a na miata.. like 90

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Weston

I’m looking at a 2002 or 2008. Those two are my favorites. It’s just a matter of convincing my fiance that I need a second car.

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Cam'ronQuestion author

Tell her to msg me.. lol ill tell her to let u get a miata.. lol.. that thing would be so nasty tho..

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Weston

What? A 2015/6 with a 20b or an Accent hatch with a 20b? Because the Accent would be lulz. Ultimate sleeper car.

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Cam'ronQuestion author

Ultimate sleeper but fwd??

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Cam'ronQuestion author

But put it in the miata.. I wish they would have brought the rotary back in the new miata..

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Weston

I’m afraid the rotary is dead for a while. Which sucks because the MX5 needs to have a rotary option. Even if it added 20k to the price tag.

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Cam'ronQuestion author

Idk about an additional 20k but 5-10k yea..

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Weston

At that point, the number wouldn’t matter.

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Cam'ronQuestion author

True..

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Dave

Same brand^^

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Van

Check out rotary miata club page. You can get all the info you need there. I’m looking at roughly 5k to do my 13brew swap. I’m good with a welder and build cars for a living, so installing the engine was the easy part. Just finished wiring up a custom harness bumper to bumper. Should be on the street tomorrow.

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