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Does anyone know the easiest way to recognize the BP motor?? Some codes on the head, block, anywhere???

Why?
Because here in Europe there are 2 BP motors. Similar, but different.
1. in Protege 1989-1994 = BP DOHC ~ 128 hp
2. in Mazda Lantis 1995-1998 = BP DOHC ~ 115 hp

There is a BP SOHC also, but i think I´ll be able to recognise that one...

So, I would definitely want the motor number 1, and the difference between them is valve cover. Number one has metal, and number 2 has plastic valve cover. But, to be more interesting - valve covers are interchangeable.

In short, how not to get scre*ed?? How to get the engine I pay for, and not the other one???

Thanks!

This is a very good question since here in Barbados I only see the Lantis 95-99 BP motor and I have always wondered how come it was only rated at 115hp when the older BP motor was 130hp.

http://en.wikipedia.org/wiki/Mazda_B_engine#B8

B8
The 1.8 L (1839 cc) B8 is not just a bored and stroked B6. Rather, a new block with widened cylinder spacing is used. The bore was 83 mm and the stroke was 85 mm. This SOHC engine was used in various Australian Mazda 323s and the American 1990-1994 Mazda Protege. It came in both 8 (B8-E) and 16-valve variants (B8-ME).


BP
The 1.8 L (1839 cc) BP is a dual-overhead variant of the B8. It was first found in the 1989 Mazda Familia and American-market 1990 Mazda Protege LX. This engine was dubbed BP-ZE and featured a forged crankshaft, piston oil squirters, an aluminum baffled oil pan and is the first engine to feature Mazdas patented VICS (Variable Induction Control System) system. This particular variant can be found in the following vehicles:

-1989-1994 Mazda Familia GT (European & Australian Market)
-1989-1994 Ford Laser TX3 (Australian Market)
-1990-1994 Mazda Protege LX (with VICS)
-1990-1994 Mazda Protege GT (Canadian Market)
-1990-1993 Mazda 323 (European Market)
-1992-1993 Ford Escort LX-E
-1991-1996 Ford Escort GT
-1991-1996 Mercury Tracer LTS
-1994-1997 Kia Sephia GS
-1994-1998 Mazda Familia (Japanese Market)
-1994-1997 Mazda MX-5/Miata (this did not have VICS until 1999)
There is also a non-performance version that is most easily recognized by its black stamped-steel oil pan. It also features a cast crankshaft, no oil squirters, a plastic oil pickup tube and less aggressive camshafts. It is found in the 1995-1998 Mazda Protege ES.


BPT
The BPT is a turbocharged and intercooled variant of the BP. It produced 179 hp (134 kW) and 174 ft·lbf (237 N·m) of torque.

The most powerful version was named the BPD. It is commonly known as the 'big turbo' variant as it utilised a much larger IHI RHF6CB turbocharger. The BPT was used as the basis for the engine, with changes such as sodium filled exhaust valves, larger (and front mounted) intercooler, bigger fuel injectors and stronger engine internals helping to up the performance of the engine to produce 206 hp (154 kW) and 184 ft·lbf (250 N·m). This engine was designed to power Mazda to a world rally championship win, and was thus used in the limited production Mazda Familia GT-R (2200 built) and GTAe (300 built).

Applications:
-1989-1994 Mazda Familia GT-X (Japan)
-1992-1993 (BPD) Mazda Familia GT-R / GTAe (Japan)
-1989-1994 Ford Laser TX3 turbo (Australia)
-Ford Laser GT-X

BP-4W
The 1999 Miata uses a modified BP, the BP-4W, which replaces the old Hall Effect Cam Angle Sensor with a magnetic unit at the front and has an improved intake system. The United States 2004-2005 Mazdaspeed MX-5 turbo is based on this engine rather than the newer BP-Z3 and produces 178 hp (133 kW) and 166 ft·lbf (225 N·m) with slightly-reduced compression.

Applications:
-1998-2000 Mazda MX-5/Miata
-2004-2005 Mazdaspeed MX-5 (turbo)

BP-Z3
In 2001, Mazda introduced the BP-Z3 (also called BP-VE) variant of the BP engine with S-VT variable valve timing on the intake side, no more VICS, now replaced with the Variable Tumble Control System (VTCS), a similar torque enhancing set of partial butterflys that increases velocity. This was found in the 2001+ Miata. The Z family is an evolution of this engine.

In Australia, a turbocharged version of this engine produced 201 hp (150 kW) and 206 ft·lbf (280 N·m) in the Mazda MX-5 SP. The United States 2004-2005 Mazdaspeed MX-5 turbo is a BP-4W, not a BP-Z3.

Applications:

-2001-2005 Mazda MX-5/Miata
-Mazda MX-5 SP (Australian turbo)

to add a tid bit of something the BP-4W has a 10:1 comp ratio vs the 9:1, so if your rebuilding your BP and looking for a few extra ponys and dont want to bore it out. your set.

I was looking for re-ring/rebuild/gasket kits at Summit Racing's web page. I came across two Mazda/Ford 1.8L L4 90-94 gasket sets. I called Summit Racing, the only thing they could tell me was that one is for the BP-ZD, and the other for the BP-ZE. They have the same contents, but one is $50 less expensive. Does anyone one know if the ZE (never heard of this variant) is close enough to the ZD that the gaskets would be the same?

http://store.summitracing.com/partdetai ... toview=sku

http://store.summitracing.com/partdetai ... toview=sku

ZE is generally a europe/Japanese addage..

I would from your link assume that the set for ford/lincoln/mercury + mazda is the one for the ZD motor no?

this is a shot in the dark, nothing more. but i know some BPs had the vics, while others didnt. also there are a few different intake manifolds floating around cause of the miata, and ford varients. so they may have different manifold gaskets but like i said. just a guess

Cy wrote:ZE is generally a europe/Japanese addage..

I would from your link assume that the set for ford/lincoln/mercury + mazda is the one for the ZD motor no?

Yes, the link for the ZD motor is the one that says Ford/lincoln/mercury + mazda -- and it is $50.00 more expensive than the ZE kit. If the ZD kit was less expensive, it'd be a no brainer -- get the right one for the lower price.

My appologies to Zuna_mx-3; I may have hi-jacked his thread.

It seems the question was asking if there is a manner to visually determine which variant of BP engine just by looking at it. That is, if someone less than entirely honest or knowledgable said that an engine is a 1994 BP 128 HP engine, how can that be verified before buying it?

zuna_mx-3 wrote:Does anyone know the easiest way to recognize the BP motor?? Some codes on the head, block, anywhere???
...
1. in Protege 1989-1994 = BP DOHC ~ 128 hp
2. in Mazda Lantis 1995-1998 = BP DOHC ~ 115 hp
...
In short, how not to get scre*ed?? How to get the engine I pay for, and not the other one???

From what I understand the lower HP variant is the ODB-II engine, and the higher power is the ODB-I engine. But still, how can someone tell the difference just by looking? I suspect there may be something different in the distributor or such, but still, is there an imprinted code or a date stamp to locate?

The difference in those 2 sets of years is the valve cover (visually)

The newer having an almost identical cover to the 1.6L DOHC from the mx-3
The older having a square style cover...and depending on the branding, either a plastic cover for the timing gears or a full metal Valve Cover.

The BP-05 i believe tobe the older and the BP-10 or 01(can't remeber being the newer)

Either way that number is written on the distributor side of the head.

On the block is only "BP" stamped into a jutt coming from near and above the transmission. i believe close to the distro and just where the head meets the block.

i was under the impression that the lower HP had more potential and is actually down-performanced in its ECU to help with gas milage. but the OBDII gives it a better platform to work with

if i remember correctly the older BP had more aggresive cams and also came w/ the oil squirters and the newer BP doesnt...

Well, a friend of mine has a newer type BP with an older type valve cover which is a bolt-on swap. So the cover won´t determine it definitely....

Here in the states, another way to tell the two apart - other than the valve cover - is to look for an oil cooler. If it has an oil cooler, its an 89-94.

May be the case overseas as well??? Just another something to look for that may help with identifying .....

is a dual-overhead variant of the B8. It was first found in the 1989 Mazda Familia and American-market 1990 Mazda Protege LX. This engine was dubbed BP-ZE and featured a forged crankshaft, piston oil squirters, an aluminum baffled oil pan, and VICS. This particular variant can be found in the following vehicles:

* 1989-1994 Mazda Familia GT (European & Australian Market)
* 1989-1994 Ford Laser TX3 (Australian Market)
* 1990-1994 Mazda Protege LX (with VICS)
* 1990-1991 and 1993 Mazda Protege GT (Canadian Market)
* 1990-1993 Mazda 323 (European Market)
* 1992-1993 Ford Escort LX-E
* 1991-1996 Ford Escort GT
* 1991-1996 Mercury Tracer LTS
* 1994-1997 Kia Sephia GS
* 1994-1998 Mazda Familia (Japanese Market)
* 1994-1997 Mazda MX-5/Miata (this did not have VICS until 1999)

There is also a non-performance version that is most easily recognized by its black stamped-steel oil pan. It also features a cast crankshaft, no oil squirters, a plastic oil pickup tube and less aggressive camshafts. It is found in the 1995-1998 Mazda Protege ES.



escort gt comes with the bp-ze