RE: Brake vacuum (was 4K turbo conversion)

["PAT MARTIN" <MARDKINS@classic.msn.com>]

Not necessary at all.  Just get a vacuum canister and plumb it in line with 
the brake booster.  There is plenty of vacuum to operate the brakes with this 
set up.  I have done many track days and even done some left foot braking 
without drama.  Remember that even on the track the car spends a lot of time 
off boost.  Watch the gauge sometime.

As for getting the vacuum pump machined into the turbo block that is insanity 
(of course I almost did it:-).  The lobe is on the cam but that pump is such a 
poor design I cannot imagine doing that to a perfectly good head.

Pat Martin
864000csq turbo, 2 1/2 cat back, H&R-Boge, MC and loving it.  Drilled and 
stopping it. Koenig Cobra 16x7 with Yokohama A520's turning it,  K&N and uh... 

84 4000sq  AKA: The beater. Very hot with a window that will not roll down.
95 subaru legacy 
Bothell, Wa

"Brinkmann, Gerardo V" <brinkg@uf4124p01.BheightsNJ.ncr.com> wrote re: 4K
turbo conversion.
......

4 - Brake vacuum - I thin k I may have a problem with this. The turbo engine
does not create a lot of vacuum, ad a result I may find that the brake
booster
will not have sufficient vacuum.
-------------------------------
You may be able to mount a vacuum pump from a 90.  This may require drilling
the proper hole for the pump push shaft in your head.  I recall reading the
cam lobe for the pump is in all engines, but do not know for sure.

                .... Kirby   (Kirby A. Smith)
                              2 x 1988 90q
                          New Hampshire USA