[Diy_efi] Jetronic - RFI

Lee M. Lemoine llemoine
Mon Mar 6 17:09:34 UTC 2006

Sorry, didn't see this thread first...

If your able to reuse your master cylinder, depending upon if the
proportioning is built in or not... (easy to tell, does it have 2 lines or 4
lines?)  If it has two lines, i'm pretty sure htats what most ABS systems
use...  then it splits that out to the two 'safety' circuits.

As mentioned before, it starts with whatever pressure you put on the
pedal... could be 1000 psi hydraulic for all we know...  either way, the
motor is there to kick the pressure up when the pedal hits the floor and
your still not stopped yet...

-- Lee

On 3/6/06, Ian Molton <spyro at f2s.com> wrote:
> Lee M. Lemoine wrote:
> > The unit that i have is a combination valve unit, master cylinder, and
> > proportioner.    No, not all the time, but when the motor is running it
> > will draw enough to make your headlights dim ;)
> Ok, so implementing ABS actually looks to be relatively simple.
> Where are the gotchas ?
> Things Im thinking of include:
> 1) Will non ABS disc brakes put up with being pulsed like ABS ones?
> 2) Evidently the 'path of least resistance' method for my install would
> be a system where the pump and valve were a single unit, but fed from a
> seperate master cylinder. The question this leads me to is one of
> pressures. Do most small car brake systems use pressures within a
> reasonably similar range, or am I going to be hunting down parts with
> particular specs? furthermore, is it possible to adjust things like
> proportioning on ABS setups, or is it hardwired in the ABS computer ?
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Lee M. Lemoine
'06 Subaru Legacy GT Limited - 250/250 AWD 5EAT
'93 Chevy Cavalier Z24 Convertible - 300/330 FWD 5MT (Mclaren Turbo!)
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