Engine Swap for 3rd Gen Mazda 3's? - 2004 to 2016 Mazda 3 Forum and Mazdaspeed 3 Forums
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post #1 of 17 (permalink) Old 05-09-2017, 11:10 PM Thread Starter
Shinyshow"16
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Engine Swap for 3rd Gen Mazda 3's?

So the 3rd gen Mazda 3's are pretty peppy cars, good throttle response, but a little latent on gaining acceleration. They are fun to drive, but i feel like they would be perfect with a little more power. I understand that swapping motors requires a ton of money, buying parts to retrofit the motor, and an incredibly long installation period. Since turbo charging our current skyactive engine is pretty much impossible, engine swapping our cars probably seems like the best way to gain some power. Im curious what you guys have to say about this? I have no knowledge about how these things work, and in no way am i an expert. But just theorizing if we were to pull this off, what would be need to have done to make it work? Lets have some fun on this topic ^^^
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post #2 of 17 (permalink) Old 05-09-2017, 11:55 PM
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Quote:
Originally Posted by Shinyshow"16 View Post
Since turbo charging our current skyactive engine is pretty much impossible, engine swapping our cars probably seems like the best way to gain some power.
Where did you hear that??
There are several options for power upgrades available, including turbocharging. An engine swap would be fairly expensive as you would need not only the motor but transmission, all the various bit and pieces, an engine management system and any other electronics. Then there is getting the engine to fit in the car, not to mention getting it to work. Forced induction would be cheaper and easier. Quite a few SkyActiv cars have had FI kits installed. As the kits become more common and easier to install you will see them more often I think.
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Last edited by arathol; 05-10-2017 at 12:00 AM.
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post #3 of 17 (permalink) Old 05-10-2017, 01:36 PM Thread Starter
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Really? Thats news to me, but i thought the skyactive engine was difficult to turbo because of its high compression ratio? Also i couldnt find turbo kits for the mazda 3 anywhere lol. Thats what lead me to think that it was impossible. But thanks for clearing that up! Where can i find a turbo kit?
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post #4 of 17 (permalink) Old 05-10-2017, 02:13 PM
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BBR, Turbosuorce, Edelbrock and a couple others are either producing FI kits for SkyActiv motors or are developing them for the near future. Right now the main focus is on the 4th generation MX5. Since the 3 has the same 2.0 motor, it will not be a huge jump to install one of these FI kits. The biggest issue is the cost, several thousand dollars for a good installation. Is 250 hp worth that to you? How much power do you think a FWD car can handle and still be stable under full power acceleration?

Edelbrock supercharged 2.0 SkyActiv ND
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post #5 of 17 (permalink) Old 05-10-2017, 02:30 PM Thread Starter
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Oh thats super cool! I didnt expect any company had made this possible yet, but ill definitely be saving for a turbo kit. But just out of curiosity, how do the people who install these kits compensate for the 13:1 compression ratio in the 2.0 engine?
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post #6 of 17 (permalink) Old 05-10-2017, 05:39 PM
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Quote:
Originally Posted by arathol View Post
BBR, Turbosuorce, Edelbrock and a couple others are either producing FI kits for SkyActiv motors or are developing them for the near future. Right now the main focus is on the 4th generation MX5. Since the 3 has the same 2.0 motor, it will not be a huge jump to install one of these FI kits. The biggest issue is the cost, several thousand dollars for a good installation. Is 250 hp worth that to you? How much power do you think a FWD car can handle and still be stable under full power acceleration?
How much of a MX5 kit could be used considering it is rear wheel drive ?

Would need new turbo exhaust
Intercooer piping
inlet piping
etc etc etc

And then there's the issue of camshafts, or a custom tune.


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post #7 of 17 (permalink) Old 05-10-2017, 05:55 PM
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Quote:
Originally Posted by Cookie_Thumper View Post
How much of a MX5 kit could be used considering it is rear wheel drive ?

Would need new turbo exhaust
Intercooer piping
inlet piping
etc etc etc

And then there's the issue of camshafts, or a custom tune.
And that would be the reason for the multi thousand dollar price tag.
You would need a stand alone or at least a seriously tweaked ECU to run it.
Again, is it worth it? Can the FWD chassis handle it?
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post #8 of 17 (permalink) Old 05-11-2017, 05:14 PM
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Originally Posted by arathol View Post
And that would be the reason for the multi thousand dollar price tag.
You would need a stand alone or at least a seriously tweaked ECU to run it.
Again, is it worth it? Can the FWD chassis handle it?
So in essence it would be a waste of money to buy an MX5 kit then, might as well start from scratch.

Can the chassis handle it, there is a building happening out here with a target of 400hp at the wheels so hopefully we will know the answer to that question soon !!
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post #9 of 17 (permalink) Old 05-11-2017, 06:15 PM
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Quote:
Originally Posted by Shinyshow"16 View Post
Really? Thats news to me, but i thought the skyactive engine was difficult to turbo because of its high compression ratio? Also i couldnt find turbo kits for the mazda 3 anywhere lol. Thats what lead me to think that it was impossible. But thanks for clearing that up! Where can i find a turbo kit?
I understood that to be the limitation as well (compression ratio).

It would be easier to lighten up your car. Weight is the biggest factor.

I would love to throw on a Turbo, but i have yet to find anything, let alone i still don't think its possible on the 2.5L's.
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post #10 of 17 (permalink) Old 05-12-2017, 02:25 AM Thread Starter
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If we were to replace the engine block with something more durable, could we in theory be able to add a turbo to the skyactive engine?
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