I haven't been on the board for a LONG time but thought I'd drop in to update the progress of my 1600 single port turbo.
Remember, every iota of this project was done by me.
The engine:
Your basic budget rebuild 1600 single-stock crank, rods, 4 dowel stock weight flywheel, stock cam and lifters, aluminum pushrods, rebuilt stock heads with single hi-rev springs (MUST HAVE!) and bolt-together rocker shafts (for peace of mind).
Turbo:
T25 from a '95-99 Mitsubishi Eclipse from Ebay used. Rebuild kit from gpopshop.com including Carbon Seal.
Boost control is by the stock internal wastegate controlled by a GRAINGER valve (that allows me super fast boost rise and spot-on 18 lbs. boost on a 10-12 lb. wastegate).
Carburetion:
390 Holley used from Ebay (rare dual line model, easier to tune!).
Jetting: 52 primaries and 66 secondaries.
Lightest spring in the vac. canister
Boost reference 1.5 power valve (easy to do with JB Weld!).
50cc accelerator pump and huge squirter (drilled out by me).
Electric choke even works!!!
Fuel System:
Holley Red, no regulator.
Ignition:
009 set at 30 degrees total timing (NOT locked!).
MSD 6A box and BTM module set at 1.25 degrees of retard per lb. of boost resulting in approx. 10 degress at full boost.
Taylor wires, blue coil, stock plugs.
Engine monitoring:
Auto Meter boost and A/F gauge (used from Craigslist) using a Denso heated O2 sensor, Summit racing tach with shiftlight.
Exhaust:
2.5" bends and flanges from local auto parts store. Dynomax stainless muffler used from Craigslist. Muffler unbolts in about 1 minute and wide open sounds amazing. Sounds like a BIG CC motor and boost response is better.
This combo may not be pretty but it's been running successfully since spring.
Only valve adjustments and oil changes since.
It averages 23-25 MPG with my HEAVY foot......take it from me, boosting is ADDICTIVE!
I couldn't be happier.
Just driving around town, the motor behaves just like a smooth stocker but boost is always a downshift away.
It will build boost starting about 2750 rpm AND, courtesy of the GRAINGER valve, it'll ramp up FAST to 15 lbs. BY 4500 and 18 if I stretch the motor to 5000.
Let's just say it'll bury the speedo at will!
93 octane pump gas, by the way.
It starts up perfect hot or cold (choke works GREAT!) and runs stupendous.
That's it in a nutshell.
Reliable, ignorant power from a beloved 1600 single.
I mortally wounded a stock swingaxle tranny in July (spun third and fourth hubs).
So a monster swing was built by Archway Imports in St. Louis.
Comparable to a "Super Pro Street", it has every conceivable mod including 3.88's.....I HIGHLY recommend 3.88's, they load the motor nicely for building boost, make first gear usable (!) and really make driving the car MUCH more of a pleasure.
Remember, you don't need deep gears for a turbo....no need to spin the bejeezus out of a turbo motor.
An MSD two-step and line lock have been purchased so I can master my launches.
Here is a picture from back in March.
Nothing has changed but the air filter assembly (K&N style now) and a couple more braces for the carburetor:
