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-   -   Best Bang for Buck Engine Swap? (1993 Miata MX-5) (https://www.miataturbo.net/engine-performance-56/best-bang-buck-engine-swap-1993-miata-mx-5-a-79009/)

rleete 06-03-2015 12:55 PM


Originally Posted by concealer404 (Post 1237226)
You're talking about a ban that happened 13 months ago.


Originally Posted by 18psi (Post 1237229)
Like OP, he didn't bother to read :)

Guilty as charged. I beg for mercy from the court.

jpreston 06-03-2015 03:06 PM


Originally Posted by Savington (Post 1237277)
I have an irrational desire to build a DISI MZR-powered Rx8 someday. Something tells me that with an NC subframe and transmission, that car would basically assemble itself.

I've been having bad thoughts about an LFX-powered RX8.

redneck4Christ 06-03-2015 03:36 PM


Originally Posted by Savington (Post 1237277)
I have an irrational desire to build a DISI MZR-powered Rx8 someday. Something tells me that with an NC subframe and transmission, that car would basically assemble itself.

:bowrofl:

Where's the 'Like' button on this forum?

concealer404 06-03-2015 03:55 PM

See the +0- at the bottom right of every post? Hit the "+" if you like it, "-" if you think he's a choad.

KMiata 06-03-2015 08:55 PM


Originally Posted by 18psi (Post 1237268)
/\ I'd tend to agree. When you really plan out a complete swap, not just have a wet dream about doing whatever, but actually sit down and think through the whole thing, it's never as easy as it seems at first.

^ this.

Dunning Kruger Affect 06-03-2015 10:29 PM


Originally Posted by Savington (Post 1237277)
I have an irrational desire to build a DISI MZR-powered Rx8 someday. Something tells me that with an NC subframe and transmission, that car would basically assemble itself.

Do it like the pharaohs: you can accomplish anything with a limitless supply of free labor.

noname4me 06-04-2015 09:27 PM


Originally Posted by Leafy (Post 1237286)
Fuck the DISI motor, the HPFP makes you take a 5" hole saw to the firewall for clearance. The 2.5 MZR has a better power potential anyways. But I hear ya on the NC sub frame. FM Keith says the RX8 subframe fits the NC chassis, so the opposite is probably true. Not sure how the engine position would work out in relation to the firewall or hood with that setup.

But lets talk about the MZR swap. We had one posted on this forum, and I saw a 2nd in the life and talked to the guy who built it. The one I saw was an off the wall road race car and had the firewall channeled like 4" back, the entire motor including the crank pulley was behind the steering rack, and practically behind the subframe. I believe there's a couple more floating around. I'm highly confident we can make this motor fit a stock unmodified subframe car with just the NC oil pan. And of course there's the option to put transmissions capable of 600ftlbs of torque behind it using only unmodified off the shelf components. You can pull the 2.5 version out of ford escapes for ~$600 all day, literally check car-part I bet theres more 2.5s near you under $700 than there are of the good k24s. They're also good for 350-400hp on stock internals, or around 200 wheel with bolt ons, tune, and cams. Now figure this, you can get a motor for $700, a rated to 500ftlbs road racing 310ftlbs drag racing tranmission for ~$2500 or just one rated to 300ftlbs for ~$1200, and then a swap kit that is just engine, tranny, and diff mounts. You're taking about a motor swap that gets you basically what a built BP gets you for power handling, but gets you a tranny stronger than the 6 speed, no more vibrations breaking shit, and ~70lbs off the nose, all for around the cost of what it costs to do a full build on a BP. That sounds damn enticing.


What are the specifics on the transmission options for the MZR 2.5?

Some people are posting that a MZR swap into a NA/NB is difficult or near impossible... Any idea why this swap would be that difficult? Engine height or?

The NC oil pan should be rear sump and there are multiple options for dry dumps that sell for $1000 or less. These engines (2.0 and up) are popular in Europe for track cars, so there is aftermarket support that isn't too expensive. ITB setups, cams, etc.

Leafy 06-04-2015 10:03 PM

Quad4Rods Duratec to T5 adapter. Options on the T5 range from $700 rebuilt world class (300ftlbs), $1800 T5z (500ftlbs RR, 310DR), or $2800 Geforce HD (500ftlbs). You match the starter to the flywheel you use (it was designed for ranger parts, but fwd flywheels work with the fwd starter, no confirmation on NC flywheels), and you buy a merkur T5 swap pilot bushing.

Not many even consider this swap because, well it used to seem dumb, people only saw NC MZR "power" and didnt see the 300hp N/A world challenge motors or the roundy round guys building 330hp N/A motors out of the ranger 2.3 which is literally the worst performing of the bunch due to having the worst head. If you get the front of the oil pan behind the steering rack it fits height wise with the NC pan according to the measurements of the motor online. I cant find one thats been measured with the EGR removed so I dont know if you can fit it that far back without modifying the firewall.

Voltwings 06-05-2015 11:06 AM

I have a MZR DISI sitting in storage, built bottom end just needs new valves and some minor headwork from slipped timing.

Come on yall, someone? Dont talk about it, be about it.

krissetsfire 06-05-2015 12:20 PM


Originally Posted by Voltwings (Post 1237825)
I have a MZR DISI sitting in storage, built bottom end just needs new valves and some minor headwork from slipped timing.

Come on yall, someone? Dont talk about it, be about it.

So we should all buy broken engines and put them in storage?

18psi 06-05-2015 12:31 PM

I always laugh so much when Leafy goes off on one of his "it's so easy, you just...." rambles, and people ACTUALLY take him seriously :laugh:

So E-Z P-Z you can do it in 2 hours

Dual engine cammed rotary compound charged rear mount awd? No problem bro, you just do this and this and voila, 3 hours later you're done.

Leafy 06-05-2015 12:40 PM


Originally Posted by 18psi (Post 1237868)
So E-Z P-Z you can do it in 2 hours

No way bro. This isnt a volvo 700 that we're trying to swap a ford 5.0 into.

Voltwings 06-05-2015 02:32 PM


Originally Posted by krissetsfire (Post 1237865)
So we should all buy broken engines and put them in storage?

I figured it wouldn't take a lot of common sense to realize someone should put the engine i mentioned in a miata or Rx-8 like the previous number of posts had been describing. It obviously is serving me no purpose.

redneck4Christ 06-05-2015 03:08 PM


Originally Posted by krissetsfire (Post 1237865)
So we should all buy broken engines and put them in storage?

I think he means someone should buy a Miata with a broken engine so there is a new home for that motor he's got.

redneck4Christ 06-05-2015 03:10 PM


Originally Posted by Voltwings (Post 1237910)
I figured it wouldn't take a lot of common sense to realize someone should put the engine i mentioned in a miata or Rx-8 like the previous number of posts had been describing. It obviously is serving me no purpose.

Stop tempting me Voltwings! There is a pretty abandoned looking NA that I pass every day going home from work. Might be a suitable candidate.


Just for giggles, PM me a price. You are just down the road from me, right? Houston?

Voltwings 06-05-2015 03:18 PM

PMd.

James Baldwin 07-15-2017 09:50 AM

Best Bang for Buck Engine Swap?
 
Ok I know that this is a very late reply but if you want to do a swap don't be sacrilegious and be like everyone else use a Mazda motor you can drop in a Mazdaspeed protege or Mazdaspeed Mazda 3 motor in your Miata and upgrade the Turbo System if you want to make decent power to weight ratio

Scaxx 07-17-2017 02:17 PM

https://cimg2.ibsrv.net/gimg/www.mia...79ec7f15e1.jpg

concealer404 07-17-2017 03:46 PM

Did someone SERIOUSLY just suggest to swap an FS-DE INTO something?!?!?!

18psi 07-17-2017 03:59 PM

infracted for retardation


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