Quote:
Originally Posted by serialk11r
The problem is 1.5 bar would be 1.5 times the mass of air at room temperature...adiabatic compression increases the temperature of the air, and the compressor itself imparts additional thermal energy into the air.
Another thing you're overlooking is that lightweight flywheel does not add crank power. It adds apparent power on a non-constant speed dyno. The true mechanical loss of the transmission and differential is around 10%, not 15%. The stock engine makes 200 at the crank. If you shoved say 1.8 bar into the engine I'd believe you if you said 300hp crank was possible. 1.5 bar, you're not even giving it enough air to make that happen, assuming you have a 100% efficient compressor. It's not even possible if you had a 3L atkinson cycle equivalent engine with 1.5bar.
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i did not say lightweight flywheel, it was lightweight pulleys
lightweight pulleys decrease engine friction losses
lightweight flywheels just add engine responsiveness to throttle inputs
im talking about .5 bar=7.25 psi
the engine puts down 171 whp which is about 15% loss from the 200 crank hp
so through engine friction losses and transmission friction loss there's 15%
there's people who have made about 260whp from 7psi from a 1.8L 2zz-ge
thats a 100 whp boost
320whp from about 12 psi
the FA20 has .2 more liters which means you can flow more air than the 2zz-ge
im asking for 100whp with the same kinda of setup
i know a conservative tune (for most) would yield about 80whp with a few mods
things i plan on adding
intake/headers/exhaust/test pipe/cams/forged pistons/reinforced rod bearings/forged rods(if needed)/injectors/supercharger/meth injection(for track days)/race logic traction control/ and whatever stand alone i choose
im buying a fr-s, cash, for my dad while I'm in the airforce when it comes out so i can DD it when i visit on leave, then buying a track ver in japan while im based there and build it, ship it back when im done there and use it as a track car...
ill have a LHD and a RHD fr-s in my garage
ive spent enough time with my friends modifying cars to know whats doable
im pretty sure someone will try to make this car into a 300 whp NA beast at some point... and im pretty sure many will tell them its going to be too hard to do
EDIT
this is a BONE stock 2zz-ge 161whp 180 crank hp 1.8L engine with port injection (dyno shows 8psi garret GT28rs added then dyno'd)
and you telling me i cant get 300whp out of a 2.0L engine with direct injection....