Originally Posted by Sir William
Yeah, there's 20 feet of pipe intercooling it.
No offense, but a pipe in the wind bears absolutely no comparison to decent or even a not-so-decent intercooler core.
I start building boost around 2600 and hit full boost by 3400-3600 depending on the gear. I'll get the new pics up soon....
What is full boost set at presently?
You can further reduce your lag time by reducing the diameter of the pipe between turbo and intake manifold. Besides a lower volume to push through, smaller passages promote better fluid velocities (remembering that air is a fluid).
The same is true of the exhaust piping, but I wouldn't reduce it as much as I would the airpipe. You can also speed up the exhaust velocity by thermal wrapping the exhaust before turbo. It will retain more heat and hotter exhaust gasses generate more pressure which means more speed through the pipe and harder hitting of the turbine (it wil want to expand quicker outward through the turbine housing). Just make sure that the pipe AFTER the turbine housing is bigger and UNwrapped, so there's more volume for the expanding gasses to fill easier. The bigger the better. Don't worry about backpressure loss from a biggie pipe after the turbo, the turbine housing will provide lots of backpressure. And in fact, smaller piping before the turbo will also raise this and you could see some significant gains.
You can also use stainless steel instead of aluminized and this will improve exhaust velocities as it also retains heat better.
You might think those small changes aren't very significant but thermodymanics will tell you otherwise. You'll see noticable gains I am certain considering the lengths of the pipes in question, and considering the simplicity of your setup, changing to different diameters and material will be easy since most of your piping is straight from what it looks like.
Hey I am curious what you did to counteract debris and water. I see something like a black sock...??? I was in AutoZone the other day and they have this new half-cyllinder aluminum filter heat shield, but I don't see why it can't be used or even further modified as a debris/water shield too.
I admit I was skeptical at first but with the spool figures you provided above, and figuring in the suggestions on piping that I made, this is turning my skepticism into high interest. You have a good thing here for sure, not that you need my blessings or anything
I'm not sure if I asked before, but what have you done with the fuel requirements?
1994 Ford Thunderbird 4.6L LX V8
Bone stock engine, *partial* Xenon Body kit.
PLZ HELP ME FIND A XENON FRONT LIP
I also own some Turbo Dodges, a couple turbo DSM's, a few turbo Nissans, a Toyota pickup, and a supercharged VW sportcoupe.