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Author Topic: BP Swap  (Read 11933 times)

Rocketman

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Re: BP Swap
« Reply #15 on: July 02, 2014, 06:54:25 PM »

I agree with Rocketman, get your old tranny back. The 1.3l tranny is a E series and won't hold more then 100 ft/lbs of torque reliabily.
The F series transmission is good up to 150 ft/lbs and the G series transmission is good for 200+ ft/lbs.
Both the F and G transmissions are more then strong enough to hold a N/A BP.


Try to get your old wiring back, but if you can't get your old electronics back, I do have my old electrical notes for wiring the BP engine into my Capri.  It uses the BP's charging and engine harness with fuel relay,  and the BG chassis fusebox from an escort GT.

Is yours the auto BP car Ive seen on the Yahoo! Group?
Would you mind posting your wiring notes just for reference sake? Would be a big help to us
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fchalvet

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Re: BP Swap
« Reply #16 on: July 03, 2014, 11:48:27 AM »

Yes I will do my best to keep this engine, this is really what I wanted for my Capri.
I saw a 323GT for sale after an accident, if I can get it then I will have all the parts that I need and more. I  don't even have the right clutch pedal.
I live in France, there is probably less than 5 Capri here so that's why it's hard for me to find parts. I'm still trying to get my wiring back, but if I have electric notes, for sure it will help me. For now I havn't found anything to help, even about the black connector on the passenger side
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azgtx

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Re: BP Swap
« Reply #17 on: July 03, 2014, 07:36:59 PM »

Matt he is in France.
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Rocketman

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Re: BP Swap
« Reply #18 on: July 03, 2014, 11:41:42 PM »

Here's the wiring info from the 323GTX Yahoo! group. It should be almost the same for the Capri:

Quote from: 323GTX Group
B6T to BPT wiring harness connections using 88 B6T GTX and 90 EA BPT Protégé wiring diagrams. By George B with feedback from Bob B.

For reference from 88 to 89 manual:
X-03 = FEM-01
B-01 = EM-02
X-24 = FEM-03
X-04 = FEM-02
X-08 = FE-02

0) Engine Fan Power
Connect: B6T connector X-03 Blue (F)
To: B6T connector X-03 Yellow (F)

1) Fan Idle control
Connect: BPT B2a connector X-04 B/G
To: B6T B2a connector X-03 Y/G

2) Turbo Buzzer
Connect: BPT B2c connector X-03 R/Y
To: B6T B2b connector X-03 V

3) Turbo Lamp
Connect: BPT B2c connector X-03 W/G (the schematic color is called out as P, but the harness is actually W/G)
To: B6T B2b connector X-03 W/L

4) AC relay
Connect: BPT B2c connector X-03 L/B
To: B6T B2a connector B-01 W

5) AC SW Idle control
Connect: BPT B2c connector X-03 G/B
To: B6T B2a connector B-01 R

6) Lights on, Idle
Connect: BPT B2c connector X-03 R/B
To: B6T B2b connector X-03 R/B

7) Blower on, Idle
Connect: BPT B2c connector X-04 O/L
To: B6T B2b connector X-03 L/G

8) Brake Light, Idle
Connect: BPT B2c connector X-04 G
To: B6T B2a connector X-24 W/G

9) Rear Window defrost, Idle
Connect: BPT B2c connector X-04 B/L
To: B6T B2b connector X-03 B/Y

10)  ECU power
Connect: BPT B2a connector X-04 L/R
To: B6T B2a connector X-03 L/R

11)  Tach
 Connect: BPT B2c connector B2-08 Y/L
 To: B6T B2b connector X-04 Y/L

12)  Circuit opening relay, to ECU
 Connect: BPT A1 connector X-18 V
 To: B6T A2 connector X-03 B/R

13)  OK
14)  OK
15)  OK

16)  Coil
 Connect: BPT B2b connector B2-07 L Cut into near coil
 To: B6T B2a connector X-04 B/W Butt splice together

17)  Power steering Sw OK

18)  Power to Fuel Pump
 Connect: BPT B2a connector B2-03 B/P
 To: B6T B2a connector X-03 G/R (connects to aux relay)

18 alternate) Power to fuel pump
Connect: BPT B-2a connector X-04 G/O
To: B6T B-2a connector X-03 G/R  (two wires)
 
There is a G/O wire in the X-04 connector but it doesn’t pin out correct to the diagram I think it is the right wire though. I don't know what the effect of using the fancy fuel relay that is already in the BPT EM harness is but it seem like the circuit makes sense making this connection. Yes, this will work--if you can find the right wire on X-04. This will give you an ECU controlled two speed fuel pump. I didn't find a G/O on my X-04.
 
For #18 as an alternate to adding a relay would this work I take back what I said about the #18 B/P not able to supply the current needed by the fuel pump. That's the only power source going to the BPT fuel pump. Still, it feels marginal to me. I added my own power wire to insure the pump gets maximum voltage and therefore fuel pressure/ flow.
ß
19)  Temp Gauge
 Connect: BPT C connector X-14 B/O
 To: B6T C connector X-08 Y/W

20)  Main Relay from BPT, Bottom View
______
| A  B   |_
|            _ |
| C  D   |

A & B switched contacts, connect to B6T connector X-18 (EM) W/R and B6T B-18 L, under fuse box.
   C connect to ground
   D connect to switched +V, B6T B-44 or B-45 B/Y

Also for the switched power source for pin D on #20 how about this.
 
20d
Connect: BPT B-2a connector X-04 L
To: B6t B-2a connector X-03 B/W (two wires) connect the end of the blue wire in the engine compartment to pin D on the main fuel relay.
This makes the power source more similar to the wiring schematic and uses the unused coil power wire in the EM harness. The only problem I'm having is there are 3 B/W wires in the B6t X-03 connector. I haven't figured out which one is the third one and what it goes to.

21) Move Normally Closed cooling fan relay control switches from B6T engine to          replace Normally Open switches on BPT engine; keep B6T fan relays


Also I don't know if you want to mess with the clutch switch but It hooks directly to the ECU I'm not sure what the ecu does with the signal but I think It will make it so you can start the car with the transmission in gear and the clutch depressed without it the transmission would have to be in neutral. It can be disabled by just grounding the BR/Y wire I think. Notice the B6T clutch and neutral switches are open when the BPT switches are closed. That's why the BPT clutch and neutral switches are in parallel not in series like the B6T. If you ground the BR/Y you'll be able to start it any time. I left off the clutch switch (I didn't want to change it). I also swapped over my reverse switch from the B6T tranny so it will plug into the B6T harness connector.
 
Clutch switch
Connect: BPT B-2c connector X-04 BR/Y
To: B6t B-2c connector X-03 Br/B This will work IF you replace/ install a BP clutch switch.

Source of the file: https://groups.yahoo.com/neo/groups/323gtx/files/B6T%20to%20BPT%20wiring%20harness%20con./
Can't vouch for it's correctness personally but I haven't heard anything otherwise.
« Last Edit: July 03, 2014, 11:43:34 PM by Rocketman »
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fchalvet

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Re: BP Swap
« Reply #19 on: July 06, 2014, 02:40:05 AM »

Thank you very much for this writing info.
It will be a good help.
I probably will have my fusebox back next wenesday, so that's good.
I'm also looking for the Capri wiring diagram book, I saw few of them on Ebay.

Just one question, when you talked about the charging harness, do you mean the main harness, where the ECU is connected to? or the one in the fender connected to the lights?

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azgtx

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Re: BP Swap
« Reply #20 on: July 06, 2014, 01:28:44 PM »

Charging harness is the harness going to the starter, alternator and various other goodies on the back of the block.
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fchalvet

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Re: BP Swap
« Reply #21 on: July 06, 2014, 02:54:53 PM »

Thanks, I remember this harness now, I hope will get it back

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chrispoe

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Re: BP Swap
« Reply #22 on: July 07, 2014, 11:09:27 AM »

Is yours the auto BP car Ive seen on the Yahoo! Group?
Would you mind posting your wiring notes just for reference sake? Would be a big help to us

There's a Capri with an automatic BP on Yahoo groups? The only Capri's with BP engines on Yahoo that I'm aware of is yours and mine. My Yahoo handle is Lovefool524 and I do have my Capri on there, but my car is not an automatic, it's a 91 N/A.

I found my schematics, but 13 years of age has taken a toll on them. I did the under dash wiring with pen and notepad and they're still legible, but the fusebox schematics were printed and almost half of them have faded out of exsistance. As of right now, I'm working on converting what's left to a digital format.
« Last Edit: July 07, 2014, 03:38:25 PM by chrispoe »
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fchalvet

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Re: BP Swap
« Reply #23 on: October 14, 2014, 10:47:07 AM »

Some news about my BP swap.
It's almost done now. It was longer than expected, as I discovered that the engine installed by the guy, was not good. So I had to find an other one of course.
I decided to keep a F-serie transmission, at least for now.  I still have some work to do, on the passenger mount and few things around..but now the engine is at the right place, not like on the pic that I posted before!
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StreetDoc

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Re: BP Swap
« Reply #24 on: June 08, 2015, 09:03:25 PM »

Okay, quick question about this swap, I found this engine on ebay...http://www.ebay.com/itm/89-94-MAZDA-FAMILIA-PROTEGE-323-GTX-DOHC-ENGINE-AWD-MANUAL-TRANS-ECU-JDM-BP-T-/291484901925?hash=item43dddaa225&vxp=mtr. Is it possible to fit the BPT engine in the capri with 4x4 trans?
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Rocketman

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Re: BP Swap
« Reply #25 on: June 09, 2015, 08:38:21 AM »

Not if you're going to keep it FWD.

Remove the trans, and the BPT will bolt directly to the XR2 transmission.
There's a lot of the AWD Mazda folks looking for BPT transmissions as spares/replacements, you'll make a good amount of your money back re-selling it.
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StreetDoc

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Re: BP Swap
« Reply #26 on: June 09, 2015, 04:56:32 PM »

Thanks for the info. I have NO mechanic knowledge.
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Gaz

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Re: BP Swap
« Reply #27 on: June 20, 2015, 07:08:36 AM »

So, I take it you can use the b6 na ecu with an na bp?
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chrispoe

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    • 91 BP Capri GT
Re: BP Swap
« Reply #28 on: June 20, 2015, 08:55:23 AM »

So, I take it you can use the b6 na ecu with an na bp?

Yes you can by swaping over the B6’s distributor, injectors, sensors, ect …to the BP.
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Crapi Attitude

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Re: BP Swap
« Reply #29 on: July 22, 2016, 09:14:21 AM »

If anyone is wondering how difficult this swap is, I did it successfully with no experience, with hand tools, while really drunk. The car is a mess.

A fast mess.
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