Not to my knowledge.  I new a lot of guys who have putthe Saab system on the
740

On Fri, May 29, 2009 at 1:14 PM, Mitch Haley <m...@voyager.net> wrote:

>
> Did Vulva ever put a system like Saab's APC on the 740 turbo?
>
> I replaced a piston in a 1981 900 Turbo once. (APC came out in 1982) Never
> seen a Mahle piston broke like that before.
> My boss took it out for a test drive and asked if the boost gauge (no
> numbers) was supposed to swing off scale. First line past neutral is 1/2
> bar, max boost. 2nd line is .75 bar, right about where the safety switch is
> supposed to kick in.
> Last mark is 2 bar, and it was going past that. I found the hose to the
> overboost protection switch under the dash, unhooked and plugged. I plugged
> it back in and readjusted the wastegate for 7psi. My boss drove it home for
> the night, complained it was slow compared to the way it was before. Well,
> duh, it only made 150hp, just like it was supposed to.
> We compromised. I lengtened the wastegate rod until the safety switch
> killed the fuel pump, and then backed off 1/2 turn. Told Vic that was
> absolutely the most power the car would make without bypassing the safety
> and breaking pistons. He sold it a while later, and AFAIK the buyer had no
> problems. At least it never landed in my shop again.
>
> I'd love to know how many psi it was running when the moron previous owner
> blew it up. At least he shut it down immediately and the block was still
> usable.
> Mitch.
>
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