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]

Couldn't fit all the pics on that last post, here is the back of the plate, showing the need to be tidy with the mounting bolts to keep it all fitting well. The ground for the pump went up to the trans ground strap bolt.

Last night I mounted the turbo, and ran the drain line from the turbo to the pump, roughed in the lines from the pump to the engine, and the oil supply to the turbo. Will add some more pics tonight. I took thursday/friday off to get this thing DONE and on the road.

Side note- shop hard for parts! I was looking for an NPT to -AN adaptor for the turbo oil line, and a 4' section of braded hose, pre built, with -AN on each end. Some of the usual big auto parts superstores (you know who they are) had such things, in the sport compact section, as nitrous bits and pieces. Would have run me 70 bucks or so, and the adaptor would have been a blingy anodized aluminim bit. At my local dirt track store, (there are plenty of dirt/clay ovals in my area) a good solid brass adaptor and 4' section of brake line with correct fittings at each end ran me, oh, $17 bucks.