Went thru the FAQ,and did a search,but still feel I have to clarify and definitely feel I have a few valid NEW questions anyway....once my Factory warrantee is up I'm interested in swapping to a 1.8L or 2.0L,whichever is more easily available...I believe the 1.8l has the same tranny as I do,but what about the 2.0L,will it bolt right up to my tranny?...also will my ECU run it or should I get the ECU from the corresponding car too? also anybody have any idea to the costs involved if I did the swap myself???

 

Either engine will work with your existing F type transaxle. As you mentioned, the 1.8L came with that transaxle, so it would simplify your swap and reduce some cost by using your stock transaxle. You will need the engine wiring harness and ECU from the engine donor. No one can tell you what it's going to cost to cost you, too many variables.

 

cool,thx eric....and dont most of the aftermarket items that fit the the 2.0L fit the 1.8L also???

 

why not look into the japanese spec 2.0L (FS-ZE)?

 

I wouldnt look into the FS-ZE because i have talked to people that have done it and havent seen big gains for the cost...the FS-ZE runs $1850 on corksport and thats without an ECU....ive talked to junkyards in my area that can sell me the 1.8L and ECU for $1250 total

 

Which LX are you talking about? Gen 1/2/3? I thought I have a F25M-R in my '99 LX? Just looking to clarify.

 

Yes, almost everything that fits one will fit the other.

 

Jesse, let me clarify. Yes the bellhousing bolt patterns are the same on both blocks. The 1.8L & 2.0L engines do use different size flywheels and clutches, as well as transaxles. There probably won't be room in the 1.8L engines' F type transaxle bellhousing for the larger 2.0L engines' flywheel & clutch, but the 2.0L engine could use the smaller flywheel & clutch from the 1.8L engine and f type transaxle just fine. Did that make sense? A swap from a 1.6L to a 1.8L or 2.0L can be done, but the 2.0L might require additional parts IF you want to go with the larger stock flywheel and clutch on that engine.

 

Jesse was referring to the 1st gen Protege and the MX-3. The reason certain transaxles wouldn't be considered direct swaps with others lies mostly in the differences between the bellhousing size, and diffences in flywheel and clutch diameter. Some engines may actually have a different bellhousing pattern than others, but usually only significantly different engines. For example, the 2.5L V6 Mazda engines may use a different bellhousing pattern than the 4cyl BP or FS engines even though it still uses a version of the G type transaxle.

 

Do the bellhousings bolt off of Mazda trannys? I'm wondering if you could possibly keep the existing tranny but botl on a bellhousing for a specific motor (like a 2.5L V6 )
I've been looking into what's involved in a V6 swap myself, using a V6 MX-3 as a referance (hoping the MX-6 is close enough ). One of the issues I've wondered is the possibility of needing custom axle shafts with the spines cut on one side for a V6 and the other for my Pro's spindles.
If the bellhousing bolt off of a Mazda tranny, I could possibly modify a V6 bellhousing to fit, eh!?!

 

I have the FS-ZE in my MP3, and I wouldn't consider doing it unless you are gonna completely swap out the ECU, or get a Stand-Alone Engine Management System. The reason being is that you won't be very impressed. My engine needs tunning badly. I have gained little cause I am using my stock ECU.

 

http://forum.protegemp3.com/vbb225/s...&threadid=4845



im planning on an engine swap soon....

 

Uhh... the MX-3's V6 is COMPLETELY different from the MX-6 V6.
The MX-6 has a 2.5L 164 or so hp V6.... the MX-3 had a TINY piece of crap 1.8L V6 which made 115 or so hp.

 

all g series trans axle can swap from car to car. The only thing is the bell housing may need to be swapped from I4 transaxle from the v6. You need a special tool that sepeates the gear box from the bell housing.

I would like to put the tran axle from the mx3 or escape 4 cyclinder. The MX3 has gearing of 434 and the 4 cyclinder Escape has 486. Also from the Ford ZX2 the tranny is a g series bolted to a ztec motor. Nothing from the focus swaps maybe thats why they suck. LOL.

 

That's not true. Both V6's are from the Mazda K series of V6 engines. The bore and stroke were changed to produce 1.8L, 2.0L, and 2.5L versions of this engine. The block dimensions are almost identicle, any many people have swapped 2.5L KL-DE and KL-ZE engines into MX-3's.