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turbo/superchargeing, what about brake servo vacuum etc. . .
Posted: Thu Dec 20, 2007 6:58 pm
by sumo_e36
As above. when you turbo or supercharcharge a N.A engine what do you do about the vacuum fed ancilliaries (brake servo etc...) are there electric ones on the market
Re: turbo/superchargeing, what about brake servo vacuum etc.
Posted: Thu Dec 20, 2007 7:09 pm
by Brianmoooore
There's still the same manifold vacuum, when you close the throttle, which is the usual state when you use the brakes!
Re: turbo/superchargeing, what about brake servo vacuum etc.
Posted: Thu Dec 20, 2007 7:11 pm
by boombang
they use a one way or "check" valve on the vaccuum hose
Posted: Thu Dec 20, 2007 7:11 pm
by sumo_e36
is that the definitive answer then, you leave it as it is
Re:
Posted: Thu Dec 20, 2007 7:16 pm
by boombang
Depends if it has a one way valve in already or not - if you do then yes.
Alternative is to either switch to pedal box with master cylinder appropriate for non-servo assisted braking or as you said running another vaccuum source (which I can't say I've seen unless you were to adapt a diesel type, some cars it is on the alternator, others driven off an engine belt)
Re:
Posted: Thu Dec 20, 2007 7:42 pm
by Brianmoooore
boombang wrote:Depends if it has a one way valve in already or not - if you do then yes.
AFAIK, all vacuum servos have a one way air valve!
Re:
Posted: Fri Dec 21, 2007 3:11 am
by Turbo-Brown
Pedal box or not, there will still be vacuum in the manifold when the throttle's closed.
Seems that pretty much every car has a one way vale so just leave it as it is.