Identify this engine..

[Custommx3]

Ok guys, Im out looking for a new motor for my RS..

After scratching my head trying to figure this out so many times my head hurts, its time for a swap.

I gotta keep the auto in the RS. My wife cant drive a stick, so our backup car needs to be auto. I cant seem to find a good motor with low miles that wasnt pulled 8-10 years ago. Plus Ive dumped so much money on new parts trying to resolve the pulsing and misfiring, that I want to keep the stock motor and or be able to use the stock parts that are new on my DOHC.

I found this...


http://cgi.ebay.com/ebaymotors/91-93-MA ... otohosting

This engine


and

My engine


Besides from slight differences look almost identical.

The seller stated that the block code is a BP, but looks nothing like any mazda branded bp Ive ever seen. I have asked the seller to verify the block code and get back with me on it.


Anyone know what this engine comes in? I could guess tons of cars, but guessing doesnt help


I may do a swap to manual on down the road, but I wanna keep the stock tranny for now. Im also on a budget, so if anyone has ideas, please, let me know. My RS also has AC, and its HOT and HUMID here. My GS doesnt

Any help would be appreciated.

[atlantamx3]

Looks like its the 1.8L from the later Mazda Proteges. This is from Edwins Protege FAQ: http://www.protegefaq.net/

1.8 liter engine:
Type
BP-DE (MY1995-1996)
BP-DE (MY1997-1998)

Displacement
1839cc
1839cc
Cylinders
4
4

Valvetrain
DOHC 16 valve, direct hydraulic lash adjuster actuation, timing belt
DOHC 16 valve, direct shim over tappet actuation, timing belt

Horsepower
122hp @ 6500r/min (SAE net)
122hp @ 6500r/min (SAE net)
Torque
117lbs/ft @ 4500r/min (SAE net)
117lbs/ft @ 4500r/min (SAE net)
Bore & Stroke
83mm x 85mm
83mm x 85mm
Compression Ratio
9.1:1
9.1:1
Induction Type
Natural
Natural
Redline
7000r/min
7000r/min
Alternator output
12V 70A
12V 70A
Ignition type
single electronic coil, distributor
single electronic coil, distributor
Fuel system
Multipoint EFI
Multipoint EFI
Fuel injector rate
250ml/min
250ml/min

Manual Transmission type
G25M-R (MY1995), F25M-R (MY1996)
F25M-R

Valve Timing

Intake cam duration
233° @ 0.003"
233° @ 0.003"
Intake cam opening
5° BTDC
5° BTDC
Intake cam closing
48° ABDC
48° ABDC
Intake cam lobe height
44.094mm (1.7360")
45.0mm (1.772")

Intake cam base circle
35.941mm (1.415")
36.0mm (1.418")

Intake valve lift
8.1534mm (0.321")
8.9916mm (0.354")

Exhaust cam duration
250° @ 0.003"
250° @ 0.003"
Exhaust cam opening
56° BBDC
56° BBDC
Exhaust cam closing
14° ATDC
14° ATDC
Exhaust cam lobe height
44.600mm (1.7560")
44.9mm (1.768")

Exhaust cam base circle
35.941mm (1.415")
36.0mm (1.418")

Exhaust valve lift
8.6614mm (0.341")
8.890mm (0.350")

Valve overlap
19°
19°

Of course it also looks alot like a Z5.

[reaper of souls]

thats no bp at all thats a b6 looks exactally like mine the bp engine has a different valve cover and i don't think that the b6 head can bolt up to the bp's block so either it's a bp engine and i'm compleatly wrong or the guy on ebay has no idea what engine he has

[Limegreen mx-3]

tried to delate this post.

[4gotn]

that looks exactly like my dohc in my 95
the miata had one for a few years if i remember correctly that was exactly like it except for the fact that it was bored/stroked to a 1.8l but from what i understand wasnt poplular and got replaced
hope i could help

[Limegreen mx-3]

That engine looks like a fwd bp and not like the 1.6 B6 reason the acuater is in plain view to controll the vics on the BP and on the 1.6 b6 the actuater near the TB and not in plain view.

http://cgi.ebay.com/ebaymotors/ws/eBayI ... otohosting

And if u look that pic closely just underneth the intake manifold u'll see two letters BP like the way it BP are stamped. it looks to me like a fwd BP.

thats no bp at all thats a b6 looks exactally like mine the bp engine has a different valve cover and i don't think that the b6 head can bolt up to the bp's block so either it's a bp engine and i'm compleatly wrong or the guy on ebay has no idea what engine he has

I have put maita value cover on the FWD BP and protege lx value cover on the maita before they are interchangeable.

[ariesdude]

I think thats the 95-98 protege BP engine - someone told me that those are plug'n'play for 94+

[Limegreen mx-3]

Looks like its the 1.8L from the later Mazda Proteges. This is from Edwins Protege FAQ: http://www.protegefaq.net/

Of course it also looks alot like a Z5.

http://cgi.ebay.com/ebaymotors/95-98-MA ... QQtcZphoto

this looks like the 1.5 dohc Z5

[atlantamx3]

I think thats the 95-98 protege BP engine - someone told me that those are plug'n'play for 94+

Ding ding ding... Thats what I posted.

[Custommx3]

Plug n play for 94+?

I though u had to swap harnesses for that?

[atlantamx3]

Nope- since that motor is also from a 95+ all the plugs should plug right up.

[ariesdude]

i asked the same thing - he said we had to swap harness for the 90-94 BP which is more like the SOHC model - but the 95-98 model is basically a bored out version of B6DE.

This guy used to be a mazda mechanic that moved to switzerland just when i got my mx-3 - He mentioned about the 95+ protege engines being a direct swap for B6DE in one of his emails. I will try to contact him again. If anyone has access to these engines could you please check....

[Custommx3]

The seller contacted me...

"THINK YOU RIGHT ,IT'S Z5 ENGINE,BUT WE ARE SELLING BP LONG BLOCK NOW,AND I GOT IT IN STOCK. "

[ariesdude]

Dude you should totally jump on this and get that engine for a "reduced" price - because Z5 engines look like this -

(note the PCV valve)









The engine you referred to is definitely an 1.8L BP from 95-98 protege




The BP from a 90-94 protege looks like this

[Limegreen mx-3]

ariesdude thats what i was trying to get at well stated. refuring to the 1.8bp and 1.5z5