I bought a 90' 740ti for way too much, drove it for a year and now it's getting a full engine rebuild, OCD factor 10.
Engine that came out was a B230FT, but non-squirter, skinny rods and main thrust in the wrong spot.
Long story short, I bought a complete "low miles" FT from a 94-940.. pulled it apart and in the process of over-thinking the rebuild.
I'm no stranger to engine building or machining in general but I want to be nit-picked and criticized in my decision making process.
I've set a "fuzzy" eventual goal of around double the HP and Torque of the stock engine.
Say about 300Hp and 360ft/lbs of torque, preferably lower in the RPM range with LOTS of power under the curve.
Quick spooling, lots of low-mid range torque, quick off the line.
My plan will include new and larger everything...
-Larger turbo, but not too big!(GTX2860R, PT4831B, EVO8 TD05, BW 6258)
-Larger intercooler
-Aftermarket EMS(?)
-Water/Meth injection
-Fabricated 3"+ exhaust
-Fabricated header
-Stronger transmission(T5, TH350?)
-Stronger ignition(MSD 6A with BTM or ?)
-Stronger engine/trans mounts
Engine is a 1994 B230FT low miles Squirter block with:
-Wiseco pistons and rings, custom crown pocket spec'd by RSI(RIP), about 9.4:1 with stock head volume.
-H-Beam rods 158mm Also spec'd by RSI, ARP fasteners.
-Stock Crank, micro polished journals, balanced.
-Cometic MLS head gasket(thickness TBD)
-ARP Main and Head studs, supplied by Yoshifab
-530 head casting, will be modified(unshrouding, CC adjustments)
-46mm intake valves(REV)
-38mm exhaust valves(REV)
-Yoshifab springs and retainers
-Ipd Turbo Cam
I'll expand this list and add detail as the build progresses.
As of 9/6/2016:
So Far I've got the short block together and starting the head rebuilding.