French Mx5 turbo
#3
Retired Mech Design Engr
iTrader: (3)
Join Date: Jan 2013
Location: Seneca, SC
Posts: 5,011
Total Cats: 859
Nice. The thermostat neck block-off plate may be a bit thin. Time will tell.
Post more pics, please.
EDIT: I just came back for another look at that gorgeous cold air box.
Post more pics, please.
EDIT: I just came back for another look at that gorgeous cold air box.
Last edited by DNMakinson; 04-07-2020 at 12:41 PM.
#4
Here are some photos
The mod i have done:
Spark plugs br7 NGK
Coil on plugs
RX8 injectorsFuel pressure regulator
Cast exhaust manifold
Turbo holset hx30w
Wastegate actuator (with 0,7bar spring)
Full 63mm (2.5) stainless steel exhaust
Big Muffler without restrictions
Intercooler 57mm (2,25)
All weld aluminium piping
stainless Steel reroute kit
Alloy air box
Alloy steering réservoirAlloy heat turbo protection
Oz chrono wheels
Subaru WRX calipersSparco Sprint seats
The mod i have done:
Spark plugs br7 NGK
Coil on plugs
RX8 injectorsFuel pressure regulator
Cast exhaust manifold
Turbo holset hx30w
Wastegate actuator (with 0,7bar spring)
Full 63mm (2.5) stainless steel exhaust
Big Muffler without restrictions
Intercooler 57mm (2,25)
All weld aluminium piping
stainless Steel reroute kit
Alloy air box
Alloy steering réservoirAlloy heat turbo protection
Oz chrono wheels
Subaru WRX calipersSparco Sprint seats
Last edited by renardracer; 04-08-2020 at 03:31 AM. Reason: Add some
#12
You might want to check your cylinder head, because NA intake manifold and NB heads are not compatible (different intake manifold ports).
Maybe the previous owner used a cylinder head and/or block from an NA. So check if your head casting is a BP-05 (NA) or BP-4W (NB).
I think you can put a valve cover of the NB on the NA head, so maybe the previous owner did just that.
NB (BP-4W) cylinder head, intake manifold and camshafts are superior to NA (BP-05) in standard form.
What did you do to fit the Subaru brake calipers? What size brake disc do you use with the Subaru calipers?
#14
I Don't know how to check if the engine IS a complete BP05, or just thé head.
do you have infos ?
What about it so ? I Saw the camshafts are not NB, i guess it's NA1.8
is there différences ? Compression ? Volumetric rate ? Cooling ?
AT least, i made a good looking NB bay 🙄
I welded some plugs on the vent, and improved the internal ventilation. No more PCV !
do you have infos ?
What about it so ? I Saw the camshafts are not NB, i guess it's NA1.8
is there différences ? Compression ? Volumetric rate ? Cooling ?
AT least, i made a good looking NB bay 🙄
I welded some plugs on the vent, and improved the internal ventilation. No more PCV !
#17
Moderator
iTrader: (12)
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,884
Total Cats: 3,075
NB uses mechanical lifters and NA uses hydraulic lifters. The mechanical lifters will require shims of various heights and will require measuring and disassembling multiple times. There's not much difference in cam profiles. The largest difference is the head. But that is also minimal. Once you add a turbo you won't know the difference. If you need the 8 or 10 horsepower difference between the heads just turn up the boost 0,25 psi. It is not worth the effort to change cams or heads if it runs fine and you are not rebuild the engine.