(08-16-2018, 04:06 PM)ScottyB Wrote: sure if you're keeping the 2.5 pretty stock, that's a better bet than dealing with all the work and tuning on the 2.0 to make more power. sounds like you know good people and have this well researched. bigger displacement i assume means less revs which is always better for reliability and heat anyway.
a 2.5 is a nice sized 4 cylinder...in a car of your weight i bet it would scoot hard.
Thankfully there is plenty of documentation, info on the Miata forums, and plenty of vendors that do 2.5 swaps; it's so common due to the 2.0 not making power unless you do internal engine work. I'm happy that someone just decided to initially attempt the swap and found it's literally a direct swap. Motor mounts line up and all... ECU is plug and play. Then again, I can't say I'm too surprised as Mazda loved to try to re-use things 2005-2012 time frame.
Really looking forward to when everything is done to see what this little car will do but really not looking forward to how much more money this thing needs to be competitive. Still should be cheaper than building an equivalent TT5/ST5 S2K though
In no particular order:
- 2.5 swap + mild Moto-East cams to get into the correct power range of 170-175whp peak
a) Hoping to keep the exhaust the way it sits, if not I'll move to 1.8 header, catless midpipe, and race single
b) Singular hood vents (free aero and help keep temps down)
c) Drop brackets if I can keep the 1.6 header (lower engine = lower center of gravity + I can run a strut tower brace if I drop the engine; too cheap to not do. 1.8 header is too big and won't fit with the drop brackets)
d) Full stiff motor mounts to tickle the peen and get me ready when I'm waiting to go out on track
- Euro 3.73 FD swap (pinion) + OS Giken at the same time
a) Due to the lower redline and flatter power curve/larger torque curve, this will help the car a lot - BMSPEC front splitter, BMSPEC rear wang, rear bumper cut
- TDR Super Cool Kit with lighter lithium battery
a) Help keep temps down - 225 Hoosiers + 12kg spring rate swap from 10kg at the same time
- Pull interior stuff for less weight