I already have the COP conversion done, now it's time to flow on the cold side (mine will be less bronze as well.
I already have the COP conversion done, now it's time to flow on the cold side (mine will be less bronze as well.
BP, and it's a modified EVO intake. With coil on plug, exhaust cam and ECU adjustments 160WHP is being seen. With boost it seems to help make power under the curve.
In reply to captdownshift:
Ahhh, I'm considering having an aftermarket Honda intake modified for the BP-4W that I'm putting together.
Sorry for a slight treadjack but is there a poor man's build for these or if you want NA power you're going to be buying trick parts?
In reply to Stampie:
A decent header or the '01-'05 exhaust manifold, 01-'05 pistons (bumps compression up a full point), a BP-5A cam and cranking in some spark timing will wake them up
In reply to Stampie:
Check out Carlos from BP performance specialist on book of faces, grab a second exhaust cam and swap it in place of the intake, Toyota coil on plug conversion, hacked evo ecu and modified evo intake make some nice power. All of which also plays nicely with the changes that GRM did to their most recent miata project car or bits that Keith is a perveyor of. In spite of there being so many new platform and drive rain options out there, the BP motor is so capable, plentiful, cheap and easy to work on that I see little reason to move on from it.
captdownshift wrote:I already have the COP conversion done, now it's time to flow on the cold side
(mine will be less bronze as well.
What does the intake cost?
Interesting. Is that 4G63 intake?
Some Saturn guys use 4G63 exhaust manifolds, so I wonder if the intake would come close to bolting up as well.
Am I the only one wishing for a translation here?
What exactly are we looking at? I just see a Ford DOHC engine painted some funky colors.
Ian F wrote: Am I the only one wishing for a translation here? What exactly are we looking at? I just see a Ford DOHC engine painted some funky colors.![]()
Correction, it's a Mazda BP-4W with a Ford valve cover and a Mitsubishi 4G63 intake manifold. I knew people modded Honda B-series manifolds, but the 4G63 intake is a new one to me. It's got better plenum and runner designs and better options for throttle bodies. Probably lighter than the VCIS-equipped BP manifold too.
captdownshift wrote: In reply to Stampie: Check out Carlos from BP performance specialist on book of faces, grab a second exhaust cam and swap it in place of the intake, Toyota coil on plug conversion, hacked evo ecu and modified evo intake make some nice power. All of which also plays nicely with the changes that GRM did to their most recent miata project car or bits that Keith is a perveyor of. In spite of there being so many new platform and drive rain options out there, the BP motor is so capable, plentiful, cheap and easy to work on that I see little reason to move on from it.
I saw that turbo BP they built that made 740hp on the stock crank. It was in a FWD Protégé running through an MR2 transmission. Who knew that Mazda engines were so friendly with other brands?
I had considered an engine swap, but after seeing some of the stuff that people do with the old Mazda BP in all sorts of applications, I'm convinced to hang onto it and play with it.
So what needs to be done to the intake? Port matched and drill the mounting bolts? Can't be that easy right?
Stampie wrote: So what needs to be done to the intake? Port matched and drill the mounting bolts? Can't be that easy right?
Probably depends on what car it's going into. If you put that in a Miata, the throttle body is going to be up against the firewall...
The local Shelby Club used to run track days at Sears Point where the requirement for entry was that a car be "Ford-powered". No one ever clarified if a Miata with an Escort GT valve qualified... :)
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