another K8 turbo project

[BATTOSAI]

Yesterday, I went to my local junkyard and Picked up a small garret t2 and it´s intercooler for 60€, and I decided to start with it because it isn´t too large to be blown only by three cyl. , and it looks good to be placed on both banks, and it also had the EGR take in! It looks I have enough room between the engine and the Rad, so it won´t push against it when the engine will bounce by it´s accel and deccel moving.<BR>As I had a replacement Y-pipe, I cut the nº1 flange and will weld it to the turbo manifold, and then run the exit port of the turbo to meet the other end of the Y-pipe. I will start with the stock headers, but as soon as I will be progressing, I will be updating it.I will be running a front mount intercooler. I have doubts on where I must place the VAF, before the compressor or after? I suppose that before , but not sure about it. <BR>Did you see those air mass meters that python injection sells for the Mx-3? check out their home page: <A HREF="http://WWW.Python-injection.com" TARGET=_blank>WWW.Python-injection.com</A><p>[ October 11, 2002: Message edited by: BATTOSAI ]

[pelado]

It's been discussed before. Python does not sell a mass air flow meter for the K8. Call them yourself if you don't believe me.

[BATTOSAI]

so what is it, a more performance oriented Vaf? anyone has it?

[Sonicxtacy02]

take your intake hose apart and look inside the VAF, there is a cone shaped instrument that sits in the way of airflow that is VERY restrictive that gathers data. An MAF gathers similar data but does it in the way that permits better airflow.

[BATTOSAI]

I know how the standard Vaf works, but in the Python picture it looks like it doesn´t have a cone, so it must be way less restrictive. Another issue that I can´t find in the FI forum is related on where will be right to take oil for the turbocharger. I thought of taking it from the lines that come in and out from the oil filter, but I´m not gonna try it by myself. I´m not able to enter in Sean Turbo index page, I tried typing the URL instead of clicking the links, but no way. Should I install an oil radiator to cool the oil down once it goes out from the turbo? Will the cooler that is attached above the filter work enough?( I hope I understood well the Shop Manual, where it says oil cooler).Please, I need advice because I´m already in all that work!!

[pelado]

Look, I said they don't sell a Mass Air Flow meter for a Mazda KL to replace the VAF. I told you to call them but you're still posting here.......<P>You just can't replace a VAF with a MAF, the signals they put out are different from idle to redline. The VAF's voltage output drops while the MAF's increases. Thusly, they aren't interchangeable.<P>If you have a 98 or later 626 or Millenia with a KL (which uses a MAF by the way) then their MAF might work.

[BATTOSAI]

I´m not posting here because of the Vaf, or whatever python injection sells, I´m posting about advice about turbocharging my K8. All I need is help on what really I´m interested, that is adressing the stock fuel system for a turbocharged application!!<p>[ October 13, 2002: Message edited by: BATTOSAI ]

[pelado]

Excuse me, but you're the one that keeps posting like the Python unit could be a possibility. It won't since that unit is a hot wire MAF.<P>Anyway, you don't need to cool the oil after it leaves the turbo, that's a waste of time.<P>The lines going to and from the oil cooler that's just above the oil filter carry coolant, not oil. You're going to have to tap into the block (or somewhere else on your engine, I suggest somewhere as close to the oil pump as possible) to obtain a oil source for your turbo. If this is unfamiliar territory for you, then stop and get someone with experience to do this for you. **I remembered an easy way to do this. Remove the oil pressure sending unit. Get a nipple and brass tee that matches the thread of the sending unit. Put the nipple in the block and install the tee. Off the tee, run a small copper line up to the turbo. Install the sending unit on the end of the tee.**<P>I suggest shimming the relief spring on the oil pump with a five MM shim. You'll have to drop the oil pan, find the oil pump, look for the hex head, remove it, install the shim beneathe the spring, and bolt everything back up.<p>[ October 12, 2002: Message edited by: pelado ]

[BATTOSAI]

Thank you very much for your reply! I will follow your advice and talk to someone prepared to do that kind of works. I´ll keep everyone informed on how my turbo project develops!

[BATTOSAI]

When you refeer to a 5mm Shim, what do you mean, 5mm of height? and where I must return the oil? I looked at some turbo pictures and I saw that their return line is a hose, and mine is a tube welded to a two-bolt flange. If mine is way too large , How can I mantain the same oil pressure in the system? I have one thread and that tube, Is the thread the oil in and the tube the return line?

[pelado]

The bigger line (should be out the bottom since it's a DRAIN line) is the oil return.<BR>I suggest drilling a hole in the side of your oil pan near the flange (above the normal oil level) and welding a short piece of pipe to it. Connect a hose between the two and your oil runs back to the pan.<P>You don't worry about pressure in the drain line.<P>Yes, the 5mm is the thickness of the shim.<p>[ October 13, 2002: Message edited by: pelado ]