Well i have been tossing around this idea in my head for a while (mostly since reading xelderx's fsp build thread and more after kcbhiw has accomplished running VVT on a standalone in a miata) and i am trying to gather my thoughts on swapping a BP 1.8L into my g/f's p5. The car currently has 180k on it and the rings are on there way out indicating the need for a rebuild in the near future. The problem i am having is that, lets face it, the FS-DE is not a spectacular engine. Even more so if it were going to get a rebuild i would probably like to build it up, turbo is certainly out of the question there and NA is laughable on a FS because the only option there is ZE parts (near impossibly to even get your hands on a set of twiggy cams).
So long story short i thought of the BP as a pretty logical choice when i think of a good mazda engine. Plus i get all the wonderful aftermarket of the miata (turbo, supercharged, NA ect.) and whatever other shreds i can pick up from the 1g, EGT, and 323 GTX/R crowd.
So far in tossing this around i have come up with a couple things that i figured i should atleast start writing down and have a record of in case this is something i end up doing or for somebody coming along eventually to try something like this later.
First off the engine should bolt right up to the current transmission as its a G series trans which the 1g/EGT also uses a variant of. Even better is when the time comes for a LSD i dont need the jacking rail/rod or whatever it is from the kia sephia to put a MSP diff in.
I do need to figure out how to fab the engine mounts which shouldnt be too horrible if i can get the help of KCBHIW the only concern i have there is getting the engine geometry correct because i believe the BP actually tilts foward as opposed to the FS sitting straight up and down. I also need to figure out if i can retain the use of the stock axles esspecially the passenger half shaft.
Wiring....gotta do more research on this. I would idealy like to be able to run this off of a factory style ECU to begin with and then swith over to megasquirt later on. The other problem here is that i have to retain some sort of OBD2 since emmisions testing requires the plug in of a ecu reader. Some solutions are either somehow running a miata OBD2 Ecu or figuring out how to run a kia sephia ECU (i believe they were obd2 since they put the BP in a car that fell into OBD2 regulations)
Accesories...big plus here is the ability to use the BP's internally regulated altenator (i am almost positive i read that they are internally regulated) this has been a huge issue with running megasquirt on the FS as you have to build a regulator into the ECU. We have to retain AC here as it is a DD and the car is in GA i would figure just building some new AC lines should work and i would guess finding a R134 BP AC compressor shouldnt be hard at all and would be alot cheaper than if the FS one s*** the bed. Powersteering, once again i think all i would need would be to make new lines, and as long as the steering feel stays the same i am happy.
so far i think thats all i have come up with looking foward to hearing some constructive critism just keep it civil lol
So long story short i thought of the BP as a pretty logical choice when i think of a good mazda engine. Plus i get all the wonderful aftermarket of the miata (turbo, supercharged, NA ect.) and whatever other shreds i can pick up from the 1g, EGT, and 323 GTX/R crowd.
So far in tossing this around i have come up with a couple things that i figured i should atleast start writing down and have a record of in case this is something i end up doing or for somebody coming along eventually to try something like this later.
First off the engine should bolt right up to the current transmission as its a G series trans which the 1g/EGT also uses a variant of. Even better is when the time comes for a LSD i dont need the jacking rail/rod or whatever it is from the kia sephia to put a MSP diff in.
I do need to figure out how to fab the engine mounts which shouldnt be too horrible if i can get the help of KCBHIW the only concern i have there is getting the engine geometry correct because i believe the BP actually tilts foward as opposed to the FS sitting straight up and down. I also need to figure out if i can retain the use of the stock axles esspecially the passenger half shaft.
Wiring....gotta do more research on this. I would idealy like to be able to run this off of a factory style ECU to begin with and then swith over to megasquirt later on. The other problem here is that i have to retain some sort of OBD2 since emmisions testing requires the plug in of a ecu reader. Some solutions are either somehow running a miata OBD2 Ecu or figuring out how to run a kia sephia ECU (i believe they were obd2 since they put the BP in a car that fell into OBD2 regulations)
Accesories...big plus here is the ability to use the BP's internally regulated altenator (i am almost positive i read that they are internally regulated) this has been a huge issue with running megasquirt on the FS as you have to build a regulator into the ECU. We have to retain AC here as it is a DD and the car is in GA i would figure just building some new AC lines should work and i would guess finding a R134 BP AC compressor shouldnt be hard at all and would be alot cheaper than if the FS one s*** the bed. Powersteering, once again i think all i would need would be to make new lines, and as long as the steering feel stays the same i am happy.
so far i think thats all i have come up with looking foward to hearing some constructive critism just keep it civil lol
