Project Turbo 914 begins..., (yes, I know you can't turbo a 914) Options

[ottox914]

Just a little teaser on this winters project. Last winter I dug into this little update:

http://www.914world.com/bbs2/index.php?sho...c=53733&hl=

This winter will be phase 2. This photo will show some of the goodies under the tree, which will soon be under/on the car. The WRX intercooler has one round inlet on the back, and 2 smaller oval outlets under the opposite end tank. These will each exit and attach to some CB performance turbo "hats" for the ITB's that have 2" tubes welded to them. Some silicone elbows, and we're good. The intercooler will mount on braces running across the engine bay to support the intercooler as close to the GT lid as possible. I'll see how it goes, and probably do some yarn tuft testing to see about airflow in and around that lid, but I could always use the SDS computer to switch on either a puller or pusher fan below the intercooler based on boost, if needed. The turbo will mount on a custom flange/adaptor to be built to connect the turbo to the collector of the Kerry Hunter exhaust system. The turbo is a small Garrett VNT. The compressor map looks like a good match for this motor. I'm expecting the VNT turbo to give good low rpm thorttle response. Starting out at 5-6 psi, I'd be happy to see 10 when I'm done, but will tune to run safely on 93 pump gas and see where we end up. Off the back of the transmission, where the factory exhaust hanger mounted, I'll mount a similar hanger to support the turbo and exhaust system. A Tildon differential pump will return the oil to a willing valve cover. Oil will be taken from a "T" at the pressure sending unit on the case. There is a blow off valve to be added to the intercooler, and a mocal thermostat/sandwitch plate adaptor for the oil cooler, which has a thermostat controlled fan. I'll be adding an ignition switched relay for power to the fan and scavenge pump, so both will have power when the key is on. The pump will run continously, the fan when the thermo switch tells it to. Add some pressure side stainless or aluminum tubing from the turbo, thru the back engine tin, into the round inlet on the intercooler and we're done. Except for another trip to the LSE dyno, for some additional tuning. I'll keep posting as progress would warrent.

[ottox914]

More updates but still not done. Progress is moving at the speed of your average sundial these days- work is a B#@$*& lately. I obviously did not make my dead line to get the car dyno ready by last weekend. My current hope is to have it N/A ready this weekend, because next weekend is the first of 2 weeekends of novice school driver training, and the only thing better than riding with the newbies in their cars getting them to go faster is scaring the piss out of them in your own car...

On to the photos. Worked on more intercooler piping, have the section done from the intercooler back down thru the back engine tin. Came up with a couple good ideas for mounting the turbo and getting the exhaust to turbo section fab'd. Re-mounted the oil sending unit, adding a "T" for the supply line to the turbo. Used 2" of copper. Before you all jump on me for that, let me say Brad Mayeur built the motor, used the same thing, and had no fears of failure. Good enough for Brad, good enough for me.

To be done: its still a long list. Ready for novice school: fix pulled exhaust stud, get wireing done to the hot start relay, extend some wires for the oil sender, swap out the turbo ITB hats for the air cleaners, put sway bars back togather, she should be good. Ready for dyno time: finish intercooler piping, get turbo mount and adaptor figured out/built, build some flange adaptors for the I/C pipes to the ITB hats, run the oil supply and return lines, mount boost gauge and run lines to that, and whatever else comes to mind.

These photos are of the puke tank for the case and head venting, left and right ITB's and piping w/out the intercooler in the way, and the sending unit. I'll block off the air space around the oil sending unit with some silver aluminum tape, like is used in HVAC work, then cover that with black duct tape. Looking under the hood down in the depths of the engine you'll never know.