1.8 DOHC BP swap

codex

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2016 Mazda3 Hatchback
I'm thinking of doing a swap to a BP from a 92 Protege LX into my 2000 Protege LX. Does anyone know if this is a bolt in job? I don't need to worry about ODB1/ODB2. I'll end up using the ECU from the 92 or megasquirt. The 2000 lx has the 1.6 ZM-DE which is very similar to the 1.6 found in the Miata. The BP was also used in the Miata and swapping the two motors (1.6,1.8) is fairly trivial. The transmission in the 2000 LX is a F series, I believe, and the transmission in the 92 LX is a G15M-R.. although, I think that these two transmissions have the same bellhousing bolt pattern. Any one with knowledge on this swap or any feedback is encouraged to give feedback.
 
Its not a bolt in.

xelderx i think did this back in the day required custom mounts and some other fabrication IIRC :)
 
Research the gtr motor from the 323 it's obd 1 and makes plenty of power stock, I believe they should interchange pretty easily, a lot of people do bp swaps in the 323 and they're pretty stout motors

Also the zm-de is way far apart from the b6.
 
Oooo I thought the op had a 92 lol

Why not just swap a 1.8 from another 99-00? It'd be way easier
 
Its not a bolt in.

xelderx i think did this back in the day required custom mounts and some other fabrication IIRC :)

He had a Protege5, which came with a 2.0 FS-DE motor not a 1.6 ZM-DE. The ZM-DE has an identical block to the b6 found in the Miata, which is interchangeable with a 1.8 BP.
 
I have a 1992 Protege LX that I want to take the motor out of and put into the 2000 Protege LX. I like the motor in my 92, but I like the chassis of the 2000.
http://www.miataturbo.net/build-threads-57/hybrid-b6-zm-de-engine-build-62722/#3
According to this the zmde block is identical to the b6 found in the Miata, which is also similar to the BP (B6 and BP can be interchanged).

The other people who have done this swap have had a 1.8 FP or 2.0 FS motor. They have a different transmission and motor mounts. If the ZM and B6 have an identical block, and the B6 and BP can be interchanged, wouldn't a BP be able to bolt in to the 2000 Protege with the 1.6L ZM-DE engine and F series transmission?
 
Are you sure its identical, main think that caused me to post the above was the engine mounts and location in the engine bay.
 
The ZM-DE and B6 are very similar motors. You can even exchange heads between them. The link to the thread in my last post shows the build of someone doing just that. He also says that the b6 block and zm/z6 block are identical, save for a few small differences (not related to engine mounts). I'm hoping someone here knows more about this, it would save me a lot of time. Hopefully, I will be able to go through with this BP swap without much trouble.
 
Because I have a BP donor car already, and that's the motor that I would like to swap in. Basically I would like to use the transmission, axles, mounts from the 1.6 Z6/ZM Protege and without much trouble fit the BP in place of the ZM. I don't know if this is possible and I'm starting to think not. I will have to do some measurements.
 
A few things to get out of the way...The F-series boxes, and G-series boxes are interchangeable...at least on the FS engine, but that should basically mean any F series equipped block will accept a G series straight up. Some Australians had mounted a JDM FS-ZE (which uses a G series box) into a FP 1.8L protege, and used the F series box from the FP...but the F series are weak apparently, go with a G15 if you have access to it.

If the donor is a protege, and not a miata...you shouldn't run into the intake manifold being 'backwards'...I'm not overly familiar with this swap, but just make sure you have room for the intake and exhaust plumbing obviously...

then its down to the mounts and axles....both of which can be custom made if need be....you'll need the half shaft from the BP protege (unless the 1.6L bolts to the BP engine properly), and axle wise...it will be dependent on any differences between the outer CV joints spline count and diamater...I don't know what the 1.6L uses axle wise...but a G15 is whats in all 3rd Gen 2.0L proteges...so axles from that will fit, as long as the box is oriented in the bay at the mostly the same place...and the other end will be the knuckle/hub...you may have to basically fit a 2.0L 'sport suspension' to the front of your 2000LX to use those axles for the G15...I don't know if the stock 1.6L hubs are the same.

the F and G series boxes mount the same way in a 3rd gen protege (the 1.6L and 1.8L 3rd gens both used the F series, the 2.0L's used the G series)...i'm not positive the mounts themselves are the same, but they mount to the same section of the front sub-frame. If you're using the F series from your BJ protege, this isn't an issue...if you're using the stronger G series from the BP, you may have to find a G series driver's side mount from a 2.0L BJ...The other 3 mounts, can't comment. You'll have to determine if the timing belt mount, the 'rear' mount under the intake manifold, and the front mount fit properly...it would be a good idea to source some used or even destroyed mounts from other members, or a junk yard, for cheap to see what modifications...if any...are needed.

BP's are fantastic engines...with bottom ends that will hold for hundreds of thousands of miles...or very heavy boost (or both in a lot of cases haha)...so it would be cool if you get this to work...but its a very uncommon swap, so you'll be doing a lot of the measuring on your own i'm afraid.
 
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