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.

[iamchappy]

I've been looking into an temp adjustable fan switch for my intercooler , came across the Davis Craig stuff I could have the fans kick in at 90º or over.

( http://www.hrpworld.com/index.cfm?form_pro...;action=product

I am also considering a boost activated switch with a delay shut of relay to allow it to run on for a few minutes after it is activated. Right now I have it wired to a manual switch. I have a 4lb pressure switch plumbed in already to activate something..

[ottox914]

The SDS on my car will do a single ground switched item, either rpm based, or boost based. If I need an intercooler fan, I'll hook up the extra wire to the SDS, and have it switch on the intercooler fan using the boost based switch. I'll need to figure out some sort of delay also. I'm thinking of a manual ground switch for use when auto crossing. I can leave the fan on all the time.

I may have a gizmo to help you. Its a probe style thermostatically controlled relay. You stick the probe in the fins of the IC, and can set the relay to activate at a certain temp. This does not provide the delay you are looking for, but would provide a temp referenced switch. Let me know if you're interested.

I've been looking into an temp adjustable fan switch for my intercooler , came across the Davis Craig stuff I could have the fans kick in at 90º or over.

( http://www.hrpworld.com/index.cfm?form_pro...;action=product

I am also considering a boost activated switch with a delay shut of relay to allow it to run on for a few minutes after it is activated. Right now I have it wired to a manual switch. I have a 4lb pressure switch plumbed in already to activate something..