Problem with my turbo "Poor man's Type R" setup... "Subey" sound
 

To clarify, this is a B16A head, B18C block, and 9 psi of boost.


Well I got it started and the new motor was running fine for a while last night. I turned it off and started it back up. I rev'd it up a bit and put it in gear while it was on jack stands.

1st gear was good and moving. I put it in 2nd and I let the RPMS drop a bit and I got on it again and it got to about 4,500 rpms. I got on it a little more, 5,000 to be exact, and then I heard a pop. The car stumbled and shut off.

I went through and checked all the wiring, checked for leaks, checked for smoke... Nothing. I went through and checked all the electrical / ignition. I checked the new spark plugs. They were covered in gas, which was expected. The car is tuned for a full B16 setup, I now have it setup as a B16 head / B18 block and Edelbrock intake manifold and 70mm throttle body. Well I checked the plug wires. Nothing seemed off. But when I started the car again, it sounded like a Subaru WRX with exhaust.

For some reason I accidently touched the turbo manifold, and all of the runners coming from the block were hot as hell, which was expected, EXCEPT #4 I took out the spark plug and the wire. Turned the car off and saw a weak spark from the ignition for the #4 spark plug. I took out the next plug wire and put the plug into the wire and did the same thing. Same result, the plug set off a weak spark. I ran to the autopart store and bought a new set of plugs and new wires. Came home and installed them and I got the same results. Went back out today and bought a new dizzy cap and rotor and installed those and I'm getting the same results. The same "Subey" sound... Is it possible I have an injector stuck open or something. I can take out the plug and smell the gas in it.

I have no check engine lights, no bad sensors or anything.

Any help is appriciated.

besides the turbo, what else is done to the motor i.e. tuning program and all parts. it easier to know exactly what you working with to try to breakdown the problem!

My car sounded like a busted ass Subaru when I blew my piston ring lands due to a cheap turbo setup, poor tuning, and higher than norm C/R of 10.6.

Not sure if this is your case, due to a weak spark you discovered, but that "subie" sound may mean internal engine problems...

Hook up a vacuum gauge to manifold vacuum. Here are some links that might help you out.
http://www.secondchancegarage.com/public/186.cfm
http://www.centuryperformance.com/vacuum.asp
I have a b20/vtec with the same issue. My vac. gauge rapidly bounces between 2-4Hg at idle. I think I have a bent valve or worn guide on the cylinder head even though I have 235psi across all 4cyls. Sucks cause I spent $$$ to have the cyl.head refreshed.