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]

Mounting the cooler. The threaded rod went thru the trunk, with a nut, lock washer, and flat washer inside the trunk. I put a flat, lock, and nut up the rod under the trunk, and tightened it all up. Those new ratcheting wrenches sure made this easy.

In the second photo, I have added some cheep hose over the threaded rod and nut, hiding it all, cleaning up the look a little, and getting ready for photo 3.

In photo 3, I have added a washer and nut, to tighten up the hose. I tightened the nut so that each rod has the same length of threads showing. I then added 1/2 inch of hose over the nut. I then added the cooler, 1/2 inch more hose, and a washer and nut to finsh it off.

Photo 4 shows the cooler mounted. I'm hoping that due to the cooler holes being much bigger than the threaded rod, and that the mounts are sandwiched between 1/2 inch of rubber hose on each side, that this will allow for a sort of shock mounting to allow a little flexability in the mounts, should the need for some flex arrise, thus preventing the cooler itself from flexing and cracking/leaking.

I still have to remove the cooler to attach the power/fuse to the temp sensor, attach the barbed hose fitings, connect the lines, and I have some lock nuts to put on after the last bit of hose and washer, to try to keep everything togather with out having to really crank it down- I couldn't see how I could keep my shock mounting and tighten/compress everything enough to use a lock washer on the bottom, as I did on the top.

Monday I have my friends Lee and Dave-o, the fearless fabricator coming over for the day. Hopefully I'll have photos of the intercooler mounted, boost gauge mounted and hooked up, and maybe some intercooler piping started if we're lucky. We'll see how it goes and report back tuesday.