Turbo minivan (planning 3.8L ford windstar project)

[js335]

Originally Posted by cRiPpLe_rOoStEr

Planning previously, turbocharging an engine is not so hard as it might appear. But it's better to do it right and do everything (including the installation of an intercooler) once instead of being always fixing some incorrect setup or working around to make room for some part that wasn't originally intended to be used.

Agreed, but will be using water injection at least just at first with low boost levels.

[cRiPpLe_rOoStEr]

An alternator delete is something I could only consider if I were running an old-school Diesel, a full-mechanical speedometer and LEDs all-around, altough I'd still rather get an underdrive pulley for the alternator. Also, the weight of a bank of batteries doesn't seem so good to deal with...

[js335]

That will thought about a little later, first I need to do a plugs/wires change and fix the vacuum leak/pre-igntion issue. This is my first ford, any ford guys here with recommendations for igntion parts? If not I'll go OE motorcraft. I am having a preignition problem with regular gas and I am reading that it could be caused by the the IMRC system which is broken on the rear bank just like this one:

http://www.youtube.com/watch?v=IpS79oN9fXQ

The shaft seals for the IMRC are leaking vacuum as well which could be adding to the problem. MAF's are known to go bad and also I have read that the front valve cover allows too much oil into the pcv system causing carbon deposits, which makes sense because it went away for a few weeks after I did a water steam clean like this Internal Steam Clean

I also read that if the IMRC gets stuck in a certain position it can cause poor mileage, anyone know how this system affects fuel mileage?

[grswat]

There is a tsb on this engine for the intake bolts..that is probably your vacuum leak.