Other 4cyl engine swaps

Zadkiel · Post by **Zadkiel** » Sat Apr 07, 2012 7:02 pm

So I've been looking into quad throttle bodies and all that's required and it seems like there is a fair bit involved, and then you come away with less than 150hp still. Yet just taking a whole 4AGE will gain a lot more power, for not to much more money.

Has anyone done the swap, or a B16a or anything like that?

Euen · Post by **Euen** » Sat Apr 07, 2012 7:12 pm

If you are going to swap something in you are better off going V6 or V8. Just swapping in another 4 cylinder is a waste of time, effort and money.

There is a complete forum on miata.net dedicated to swaps. have a browse.
http://forum.miata.net/vb/forumdisplay.php?f=38

As much as it pains me to say it, if you want more power in your 5 and want to stay 4 cylinder, then bolt on a turbo or supercharger, it is the most cost effective solution.

Zadkiel · Post by **Zadkiel** » Sun Apr 08, 2012 12:01 pm

Yeah, obviously a turbo is pretty straight forward power gain option. But I was more hoping to see some NA 4cyls. Definitely would never go V8 or V6 and I prefer atmo, but your right, probably just settle for a turbo.

Is there any difference in strength between the 1.8 and the 1.6? Everyone seems to turbs the 1.6 but that could just be because they are more common?

Mr. Shine · Post by **Mr. Shine** » Sun Apr 08, 2012 12:24 pm

Probably better off turbocharging a 1.8L for obvious reasons, but most people turbocharge the 1.6L because it's what they've got, and don't want to fork out for a 1.8L plus the turbo kit on top of that.

If you're buying an engine anyway to do the turbo, start with a 1.8L. I know I'd love to pick up a BP to build turbo in my spare time.

punkoutnz · Post by **punkoutnz** » Sun Apr 08, 2012 12:38 pm

I'd stick with the 1600. They respond really well to a turbo, in part because they're a very very similar engine to the familiar turbo engines. They're already quite low compression so can handle a decent whack of boost and they're strong and easy to find if you blow one up.
I'm actually about to build up my spare 1600 motor into a dedicated turbo engine with forged pistons and stronger rods (the two weakest links as far as these engines go).

For a 1600 they're pretty torquey, especially with a turbo bolted on!

broomfish · Post by **broomfish** » Sun Apr 08, 2012 9:29 pm

This is my favourite transplant that defies logic

3 cyl 0.9 litre Mitsubishi Diesel.
Top speed 70mph

http://youtu.be/bnCrgTzvLkU

m4vr1k · Post by **m4vr1k** » Mon Apr 09, 2012 11:49 am

I'll bet that thing costs fuckall to run. Good idea for a cheap commuter I suppose.

Bwarp · Post by **Bwarp** » Mon Apr 09, 2012 6:19 pm

DAYUM. I've always wanted a 2.5 Turb diesel Mazda Bounty engine in my MX5

Zadkiel · Post by **Zadkiel** » Mon Apr 09, 2012 8:26 pm

Ha I have the 1.8 already. I did see a conversion to a Ford Fiesta engine online for the sake of fuel economy. Very sad.

SLYDIT · Post by **SLYDIT** » Mon Apr 09, 2012 9:21 pm

single rotor rotary?
that'll get the fuel economy just right

Kieran · Post by **Kieran** » Tue Apr 10, 2012 11:44 am

If you want ITBs and Power you have to go all out

Check this build out

http://clubroadster.net/vb_forum/showthread.php?t=16110

Or

http://clubroadster.net/vb_forum/showthread.php?t=46619

Furai · Post by **Furai** » Tue Apr 10, 2012 4:26 pm

Heres a good NA car RS Aizawa built up, I would have one of these anyday but NA is never cheap.

http://www.youtube.com/watch?v=DsI4K_0NT_s

punkoutnz · Post by **punkoutnz** » Tue Apr 10, 2012 5:59 pm

I've battled in the NA minefield before, I spent thoooousands on my N15 VZR with a 2L engine build. As satisfying as 230hp from a 2L NA engine was, the wind was always blown from my sails when I was struggling to keep up with guys who spent 1/3 of the money by bolting a turbo to a stock engine.

NA is one of those "fun but frustrating" kind of goals.

Other 4cyl engine swaps

Other 4cyl engine swaps

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