Why does the 4KQ need a separate vacuum pump - next question.

[Huw Powell]

> So if you were turbo charging a 4KQ and were using the MC head, what would
> you do? Rely on a big vacuum reservoir, check valve, and off boost brake
> application? Machine the head to accept the vacuum pump?

Just hook up a nice hose from the IM to the stock check valve at the
booster.  A check valve can be placed at the IM end, too, if you're
worried about hurting the hose with boost pressure.

> Granted, I try to keep my Walter Rohl-style left-foot braking to minimum....
> except in the snow :)

Unless you are into left foot braking you'll never notice.  You'll get
about three or so (assisted) pumps off-idle with this setup, by the way.

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/