>> twin turbos
>
> if the single stock turbo already produces more boost than is needed
> (otherwise a wastegate wouldnt be needed) what advantage is there to
> running twins?
My twin turbos make 60psi of boost. That's a little more than the stocker
can make. It also makes 60 pounds of relatively COOL air, as opposed to the
super-heated air flow that a stock turbo would make at anything approaching
those boost levels.
It's not just about building boost - it's about doing it while keeping the
temps down. Now, you can do that with a big single turbo. The problem is,
it won't be able to get out of it's own way until it spools up. The
advantage of a small turbo is that it spools up quickly, but can't push as
much air, and can be over-spooled by the engine (hence the wastegate).
So, you combine the two in a compound setup. The small turbo spools
quickly, giving you better throttle response and power off the line. As
it's winding out, the bigger turbo is now spooled up, and "takes over".
You probably have a perfect example of this in your shop.... look at your
air compressor. It's probably a two-stage unit. The first stage compresses
to around 50-60psi or so - the second stage compresses up to 175psi.
>> F1 injectors
>
> where did you get your injectors?
Formula 1 Diesel - http://midatlanticdiesel.com
>> ARP studs
>
> ....huh?
Head studs. Need more clamping force to keep the head on the block when
running high boost levels. Besides, they're a no-brainer to install when
you're swapping out injectors.
Nathan W. Collier - 13 Mar 2009 15:32 GMT
> It's not just about building boost - it's about doing it while keeping the
> temps down.
gotcha, thanks. i thought i was doing good with what i had added and now
youre gonna have me spending even more. ;-)
Nathan In Montana
http://ConcealedCarryForum.com